Environmental pollution by heavy metals has become a serious problem in Jakarta Bay. Mobilization of heavy metals as a result of anthropogenic activities has caused the release of heavy metals into the environment, one of which is Pb. Several methods already used to clean up the environment from these kinds of contaminants, but most of them are costly and difficult to get optimum results. In addition heavy metal pollutans in the waters are very stable and tend to be persistent. Recently, bioaccumators is an effective and affordable technological solution used to extract or remove inactive metals and metal pollutants from contaminated soil and water. This technology is environmental friendly and potentially cost effective using bivalves. These study objectives to analyzed the Pb content of three species of Jakarta Bay bivalves. The results showed that Pb content in the Eastern and Western Season bivalve tissue was significantly lowest in P. viridis (0,166 ± 0,016μg/g dan 0,161 ± 0,155μg/g) compared the Pb concentration in A. antiquata (0,264 ± 0,015μg/g dan 0,247±0,044μg/g), and M. meretrix (0,270 ± 0,016μg/g dan 0,240 ± 0,053μg/g). In this study also showed that the concentration of heavy metal Pb in the bivalve shell of P. viridis was significantly lower than that of two species (A. antiquata and M. meretrix). Pb content in the Eastern Season bivalves did not significantly different from that in the Westerrn Season. This is caused by a weather anomaly where the rainy season occurs almos throughout year of 2020. The Pb content in the bivalves shell was significantly higher than in the body tissues. It is because Pb can replace calcium ions in the formation of animal bones or bivalve shells.
Twenty (20) sample regimes were collected for each sample matrix. The samples were pretreated and digested for the determination of selected heavy metals of interest (As, Cd. Cr, Hg, Ni and Pb. The results reveals that mean concentrations of elements in the water samples decreases in the sequence as follows Hg > Ni > Cr> Pb > As > Cd. This clearly confirmed that Hg has the highest concentration followed by Ni, with Cd being the least. The mean concentrations of elements in the cat fish organs flesh, Gills, Kidney and liver of Barkin-Ladi pond water samples are given in table 4 above. The results confirmed the differences of accumulation of element in different catfish organs. The element concentrations in the cat fish samples decreased in the sequence for the flesh as Ni > Cr >Pb > Hg > As > Cd, for the gills Ni > Hg > Cr > Pb > As > Cd, for kidney Ni > Pb > Hg > Cr > As > Cd, for liver Ni > Cr > Cd > Pb > Hg > As. A two-way ANOVA showed that there was no significant difference between the mean concentrations of elements in the organs of the same fish species, while there is significant difference in the mean concentration between the organs of the different fish species investigated. The correlation analysis was carried out to determine the relationship between the concentrations of element in water sample of the study area. The result above reveals that there is a significant correlation between Cd and Pb, and also there is a significant relationship between Cr and Ni elements. While no significant correlation was observed between the other pairs. These implied that the pairs either have the same source or chemical species. Generally, the ponds were shown to be polluted with heavy metals thus the risk of bioconcentration and bioaccumulation of these heavy metals in the aquatic lives, thus endangering human health directly when consumed or through the food chain.
An investigation on role of salinity, pH and DO on heavy metals elimination t...GJESM Publication
One of the most paramount processes that play a considerable role in reducing the concentration of
heavy metals during estuarine mixing is flocculation. Not only does such a process cause a huge percentage of metals to come into the particulate phase, but also it provides ample nutrients for the aquatic life. In the present study, impact of such factors as salinity, pH and DO on flocculation of Cu, Zn, Pb, Ni, Cd and Mn throughout mixing of Chaluse River with Caspian Sea is investigated. The trend of flocculation of Pb (24.32%) < Zn (24.38%) < Cd (40.00%) < Cu (64.71%) < Ni (68.00%) < Mn (76.47%) reveals that among the studied elements Mn and lead experience minimum and maximum flocculation at diverse salinity regimes, respectively. Moreover, flocculation rate of studied metals fluctuates between 24.32 and 76.47 percent. It is interesting to note that much of metal flocculation occurs at the very lower (less than 2 ppt) salinity regimes.
Twenty (20) sample regimes were collected for each sample matrix. The samples were pretreated and digested for the determination of selected heavy metals of interest (As, Cd. Cr, Hg, Ni and Pb. The results reveals that mean concentrations of elements in the water samples decreases in the sequence as follows Hg > Ni > Cr> Pb > As > Cd. This clearly confirmed that Hg has the highest concentration followed by Ni, with Cd being the least. The mean concentrations of elements in the cat fish organs flesh, Gills, Kidney and liver of Barkin-Ladi pond water samples are given in table 4 above. The results confirmed the differences of accumulation of element in different catfish organs. The element concentrations in the cat fish samples decreased in the sequence for the flesh as Ni > Cr >Pb > Hg > As > Cd, for the gills Ni > Hg > Cr > Pb > As > Cd, for kidney Ni > Pb > Hg > Cr > As > Cd, for liver Ni > Cr > Cd > Pb > Hg > As. A two-way ANOVA showed that there was no significant difference between the mean concentrations of elements in the organs of the same fish species, while there is significant difference in the mean concentration between the organs of the different fish species investigated. The correlation analysis was carried out to determine the relationship between the concentrations of element in water sample of the study area. The result above reveals that there is a significant correlation between Cd and Pb, and also there is a significant relationship between Cr and Ni elements. While no significant correlation was observed between the other pairs. These implied that the pairs either have the same source or chemical species. Generally, the ponds were shown to be polluted with heavy metals thus the risk of bioconcentration and bioaccumulation of these heavy metals in the aquatic lives, thus endangering human health directly when consumed or through the food chain.
An investigation on role of salinity, pH and DO on heavy metals elimination t...GJESM Publication
One of the most paramount processes that play a considerable role in reducing the concentration of
heavy metals during estuarine mixing is flocculation. Not only does such a process cause a huge percentage of metals to come into the particulate phase, but also it provides ample nutrients for the aquatic life. In the present study, impact of such factors as salinity, pH and DO on flocculation of Cu, Zn, Pb, Ni, Cd and Mn throughout mixing of Chaluse River with Caspian Sea is investigated. The trend of flocculation of Pb (24.32%) < Zn (24.38%) < Cd (40.00%) < Cu (64.71%) < Ni (68.00%) < Mn (76.47%) reveals that among the studied elements Mn and lead experience minimum and maximum flocculation at diverse salinity regimes, respectively. Moreover, flocculation rate of studied metals fluctuates between 24.32 and 76.47 percent. It is interesting to note that much of metal flocculation occurs at the very lower (less than 2 ppt) salinity regimes.
HEAVY METALS OF LEAD (PB) ACCUMULATION IN SEAWEED (GRACILARIA SP) CULTIVATION...IAEME Publication
The activities of industrial waste disposal and disasters of Sidoarjo volcanic
mudflow into the river give a negative impact to the surrounding aquatic ecosystems.
But as a fishery center area, its activity depends on the aquatic ecosystem condition.
This study aimed to evaluate the levels of lead (Pb) in seaweed (Gracilaria sp.)
cultivation, sedimentation and water quality of seaweed aquaculture ponds around the
river estuary, the center of industrial waste disposal.. Sample collection of seaweed,
sediment and pond water were conducted using simple random sampling method.
Measurement of the lead (Pb) levels in seaweed, sediment, and pond water samples
used the Atomic Absorption Spectrophotometry (AAS) method. Based on the results of
this study, the concentration of lead metal levels in seaweed and sediment showed the
highest lead metal concentration values of 0.76 mg/kg and 0.58 mg/kg. However, the
concentration of heavy metals and water quality of pound water tended to be stable
with a value of <0.0764 mg / l. In conclusion, there was an increase in the lead metal
concentration in seaweed cultivation and sediment of pond water in normal water
quality conditions.
The Contribution of Phytoplankton to the Primary Production in Floodplain Lak...Premier Publishers
This study aimed to estimate photosynthetic productivity of phytoplankton and water quality in two floodplain lakes of north Bihar, India. Gross phytoplankton productivity ranged from 1.849 g Cm-2day-1 to 4.994 g Cm-2day-1 at Tarawe chaur and 1.319 g Cm-2day-1 to 3.965 g Cm-2day-1 at Gamharia chaur. The net primary productivity measured as 1.037 g Cm-2day-1 to 3.849 g Cm-2day-1 at Tarawe chaur and 1.003 g Cm-2day-1 to 2.621 g Cm-2day-1 at Gamharia chaur. Primary productivity (GPP and NPP) of phytoplankton show a single annual peak. Respiration rates varied between 0.428 g Cm-2day-1 to 2.017 g Cm-2day-1 at Tarawe chaur and 0.489 g Cm-2day-1 to 1.475 g Cm-2day-1 at Gamharia chaur. Seasonal variation in phytoplankton gross and the net productivity was almost similar, highest in summer and lowest in winter. NPP/GPP ratio and respiration as percentage of gross production were computed. Physico-chemical parameters of water were analysed concurrently.
Lead accumulation in White-Mangrove, Avicenniaalba (Blume), inhabiting densel...Innspub Net
Coastal area of East Java Sea has long been threatened by industrial source pollution, mangrove conversion into shrimp culture, over fishing, destructive fishing, sedimentation, and coastal settlement. Heavy-metal is probably the most threat that directly influencing human health. This study was carried out in two coastal areas considered central to the threat, Kedawang and GunungAnyar. Lead concentration was measured in the water, sediments, and white-mangrove, Avicenniaalba. It showed that heavy-metal has been accumulated in the sediments. Root of mangrove tree can up take and bio-concentrating this lead heavy metal up to 5.74 mg kg-1 dry weight. The concentration in the leaves and seeds were significantly lower as it frequently exuviate, drop down, and regenerated. This metal concentration was higher than the allowable concentration (Ministerial Decree of State Environment No. 51 year 2004). Measures have to be taken in order to maintain coastal area healthy for human population.
Get the full articles at: http://www.innspub.net/volume-6-number-5-may-2015-jbes/
Assessment Of Heavy Metal In Sediment Of Orogodo River, Agbor, Delta State.docxResearchWap
This study was carried out to examine heavy metals concentration in sediment of upstream and downstream of the entry of the sewage to the Orogodo River, Agbor, Delta state Nigeria . Samples were collected from upstream and downstream and were analyzed for Heavy metals (Cd, Cr, Cu, Fe, Pb, Ni, Ca, Mg, Co, Mn and Zn) by atomic absorption spectrophotometer. It shows the concentration of iron, cadmium, manganese, cobalt, chromium, zinc, magnesium, calcium, nickel, lead and copper in mg/kg in sediments sampled.Some specific physico-chemical characteristics, such as TDS, pH, Temperature and conductivity which are known to influence the interactions and dynamics of metals within the sediment. The mean value of the metals listed above in all the six locations gave 126.09mg/kg, 0.000mg/kg, 0.538mg/kg, 0.000mg/kg, 0.141mg/kg, 1.789mg/kg, 1.258mg/kg, 9.49mg/kg, 0.000mg/kg, 0.112mg/kg and 0.0827mg/kg respectively.. The result of the analysis It shown that the concentrations of heavy metal like Zn, Pb, Cr, Ca, Cu, Co, Mg, Mn, Cd and Ni in the sediment are low, but require monitoring to prevent an increase. Hence the concentration of Fe is higher when compared with the WHO and FEPA standard for sediment which may constitute risk to the environment. The concentration of heavy metals varies for the different locations. Based on the result of the analysis, recommendations were offered to reduce the concentration of heavy metal of the river.
Investigation of heavy metals content (Cd , Ni and Pb) in the muscle tissue o...Innspub Net
This study has been done to determine the amount of the heavy metals like Cd, Ni, and Pb in the muscle tissue of Hoof benthic fish (Psettodes erumei) and urban pelagic fish (Lethrinus nebulosus) in Qeshm Island in the north of the Persian Gulf. On the whole, the heavy metal content of 30 tissue samples was randomly measured by atomic absorption spectrometer. The mean amount of Cd and Ni in benthic Hoof was significantly greater than that in the Urban pelagic fish while the concentration of pb in urban pelagic fish was higher than that in the Hoof tissue samples (P<0.05). Our results showed that the concentration of the three measured heavy metals in the fishes studied was less than the standard levels proposed by WHO and FAO. Get via original link: http://www.innspub.net/jbes/investigation-of-heavy-metals-content-cd-ni-and-pb-in-the-muscle-tissue-of-two-commercial-fishes-of-the-qeshm-island-persian-gulf/
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Estuaries are well known for their potential in removing metal from fresh water to provide micro-nutrients to aquatic life. In the present investigation, we have tried to bring out the metal removal potential of estuaries during accidental spills. For this purpose artificial river water containing high concentration of Mn, Cu, Zn, Ni and Pb were mixed with sea water at different salinity regimes. Water samples were taken from a station on the main branch of Tajan River that flows in to the Caspian Sea. For this purpose, solutions with a concentration of 5 mg/L of each studied metal (Mn,Cu, Zn, Pb) were prepared in Tajan River water. The salinity regimes include 3, 6, 8, 10 and 11 ppt. It was noted that metal concentration decreased by increasing salinity. Metals were flocculated at different rates: Cu (88%) > Ni (86%) > Pb (84%) > Mn (74%).Thus, as average about 80% of total elemental content flocculates. Hence, it was concluded that a large amount of micro nutrients is carried by the river and flocculated in the estuary where the river water mixes with the sea water which may play a vital role in supplying nutrients to the aquatic animals. Cluster analyses have shown that Mn and Ni are governed by EC, pH and salinity.
Food security in a growing population with limited natural resources is one of
the most important issues of the world. Accumulation of heavy metals in food and
their concentrations increase and reaching to a risk limit can threaten human health.
The purpose of this study, is to study the heavy metals lead and cadmium in
vegetables, cultured on spinach and watercress at 10 Gardens of Ardabil. This study is
cross-sectional and 81 samples in water, soil, and spinach and watercress were
prepared during the months of June, July and August in 2015 and after preparation
according to the standard methods and using atomic absorption spectrophotometer
(Perkin Elmer) for the determination of heavy metals. SPSS software was used for data
analysis. The results showed that the mean level of lead and cadmium in all samples
were less than the EPA standard. Between studied orchards in terms of the amount of
cadmium and lead no statistically significant different was seen. The independent ttest
showed that in terms of cadmium between two species of spinach and watercress
there found a significant difference at the 5% level so that the amount of cadmium in
spinach was more than the watercress. Since the concentration of heavy metals in all
samples at second and third stages in July and August were zero, but in the first step
in June, the amount of heavy metals have been found in some samples showed that
all three samples of first cut had more contamination than second and third cut. And
in this case, the concentration of heavy metal pollution in hibernation at vegetable
gardens Ardabil is possible. The results of spinach cadmium amount in the first cut in
the three garden of viz.,3, 6 and 10 showed that in the garden (3), the amount of
cadmium in water is higher than the standard and is concentrated in spinach and the
gardens of 6 and 10 Cadmium in the soil of the gardens, is slightly higher that is
condensed in spinach thus it can be considered that spinach in terms of cadmium has
bioaccumulation.
Trace Metals Concentration in Shallow Well Water in Enugu Metropolispaperpublications3
Abstract: This work assesses the concentration of heavy metals in Enugu Municipal well-water considering the fact that some Enugu inhabitants depend on well-water as their major source of water supply. Water from twenty four (24) different hand dug wells from six locations were investigated for Zn, Cu, Pb, Mn, Cd, and Fe using Atomic Absorption Spectroscopy (AAS). The result of the study expressed as the means and standard deviations were compared to WHO and EU standards for drinking water, and it was found that well waters from Iva-Valley and Uwani areas suffer from Cd and Mn pollution. The remaining four locations (Emene, Asata, Abakpa Nike and Achara Layout) were all free from Cd and Mn pollution. Cu, Zn, Fe and Pb concentrations were either completely absent or below world threshold limits at all the locations.
Interaction on the diet and substrate on the growth of Archachatina marginata...Innspub Net
Nine hundred juveniles of Archachatina marginata aged about two weeks, with an average live weight of 2.25 g with an average shell length of 20.12mm were monitored in culture for six (6) months on five types of substrates [S1 (soil collected in a cassava plantation: Manihot sp.), S2 (S1 with 10% oyster shell meal), S3 (S1 with 10% sawdust), S4 (S1 with 5% oyster shell meal and 5% sawdust) and S5 (uncultivated forest soil). Four diets including two industrial (D1 and D 2 of 12% and 16% calcium respectively) and two based on fodder (D3 and D4 based on leaves and fruit of the papaya (Carica papaya) on the one hand and a mixture of papaya leaves and taro (Xanthosoma maffafa) on the other hand, were used. In order to determine the best combinations inducing the best growth performance, 20 combinations were formed at the rate of 45 spat for each combination; three replicas of 15 spat each. This study showed that the combination of diet and livestock substrate influences the growth of Archachatina marginata. Although the best feed is D1 (74.68 g and 7.94cm) and the best substrate is S2 (77.12 g and 7.79cm), the best combinations are D2S3 (69.37 g and 7.47cm), D1S4 (74.68 g and 7.94cm and D4S2 (77.12 g and 7.79cm). The combined effect of the high level of dietary calcium and that of the culture substrate does not promote good growth of snails. This work will help improve the production of African giant snails and provide important data for anyone wishing to engage in the breeding of these animals.
Nutritional assessment status of adult patients with multiple sclerosis: A na...Innspub Net
No previous research has assessed the nongenetic factors, especially the nutrition status of MS patients in Arab countries. Hence, this study aims to assess the nutritional status of MS patients among Arab adults. This study is a nationally representative cross-sectional study using a structured, online self-administered, validated quantitative food frequency questionnaire (FFQ) from 13 Arab countries. All data analyses were performed using STATA 16.0 and R for statistical computing version 4.0.4. A total of 813 participants were surveyed, most of the MS participants were female (68.4%), married (58.5%), non-smoker (72.6%) and 53.3% were diagnosed with MS for up to five years. MS participants did not consume the DRI of both the macro and the micronutrients including the energy requirements, except the dietary intake of the sodium which was insignificantly different from the DRI. Results also showed that most participants rarely consumed the main food items including bread, cereals, and most types of meat. While, more than 50% of the participants consumed fruit, vegetables, all types of chicken, fish, fresh soup, rice, and egg up to 3 times per month. On the other hand, milk and milkshake were consumed rarely; while, tea and herbal teas were the most common beverages. Nutrient deficiencies are very common among MS Arab patients. The finding of this study can establish a base for the development of a nutritional program for MS patients in accordance with the recommended DRI.
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HEAVY METALS OF LEAD (PB) ACCUMULATION IN SEAWEED (GRACILARIA SP) CULTIVATION...IAEME Publication
The activities of industrial waste disposal and disasters of Sidoarjo volcanic
mudflow into the river give a negative impact to the surrounding aquatic ecosystems.
But as a fishery center area, its activity depends on the aquatic ecosystem condition.
This study aimed to evaluate the levels of lead (Pb) in seaweed (Gracilaria sp.)
cultivation, sedimentation and water quality of seaweed aquaculture ponds around the
river estuary, the center of industrial waste disposal.. Sample collection of seaweed,
sediment and pond water were conducted using simple random sampling method.
Measurement of the lead (Pb) levels in seaweed, sediment, and pond water samples
used the Atomic Absorption Spectrophotometry (AAS) method. Based on the results of
this study, the concentration of lead metal levels in seaweed and sediment showed the
highest lead metal concentration values of 0.76 mg/kg and 0.58 mg/kg. However, the
concentration of heavy metals and water quality of pound water tended to be stable
with a value of <0.0764 mg / l. In conclusion, there was an increase in the lead metal
concentration in seaweed cultivation and sediment of pond water in normal water
quality conditions.
The Contribution of Phytoplankton to the Primary Production in Floodplain Lak...Premier Publishers
This study aimed to estimate photosynthetic productivity of phytoplankton and water quality in two floodplain lakes of north Bihar, India. Gross phytoplankton productivity ranged from 1.849 g Cm-2day-1 to 4.994 g Cm-2day-1 at Tarawe chaur and 1.319 g Cm-2day-1 to 3.965 g Cm-2day-1 at Gamharia chaur. The net primary productivity measured as 1.037 g Cm-2day-1 to 3.849 g Cm-2day-1 at Tarawe chaur and 1.003 g Cm-2day-1 to 2.621 g Cm-2day-1 at Gamharia chaur. Primary productivity (GPP and NPP) of phytoplankton show a single annual peak. Respiration rates varied between 0.428 g Cm-2day-1 to 2.017 g Cm-2day-1 at Tarawe chaur and 0.489 g Cm-2day-1 to 1.475 g Cm-2day-1 at Gamharia chaur. Seasonal variation in phytoplankton gross and the net productivity was almost similar, highest in summer and lowest in winter. NPP/GPP ratio and respiration as percentage of gross production were computed. Physico-chemical parameters of water were analysed concurrently.
Lead accumulation in White-Mangrove, Avicenniaalba (Blume), inhabiting densel...Innspub Net
Coastal area of East Java Sea has long been threatened by industrial source pollution, mangrove conversion into shrimp culture, over fishing, destructive fishing, sedimentation, and coastal settlement. Heavy-metal is probably the most threat that directly influencing human health. This study was carried out in two coastal areas considered central to the threat, Kedawang and GunungAnyar. Lead concentration was measured in the water, sediments, and white-mangrove, Avicenniaalba. It showed that heavy-metal has been accumulated in the sediments. Root of mangrove tree can up take and bio-concentrating this lead heavy metal up to 5.74 mg kg-1 dry weight. The concentration in the leaves and seeds were significantly lower as it frequently exuviate, drop down, and regenerated. This metal concentration was higher than the allowable concentration (Ministerial Decree of State Environment No. 51 year 2004). Measures have to be taken in order to maintain coastal area healthy for human population.
Get the full articles at: http://www.innspub.net/volume-6-number-5-may-2015-jbes/
Assessment Of Heavy Metal In Sediment Of Orogodo River, Agbor, Delta State.docxResearchWap
This study was carried out to examine heavy metals concentration in sediment of upstream and downstream of the entry of the sewage to the Orogodo River, Agbor, Delta state Nigeria . Samples were collected from upstream and downstream and were analyzed for Heavy metals (Cd, Cr, Cu, Fe, Pb, Ni, Ca, Mg, Co, Mn and Zn) by atomic absorption spectrophotometer. It shows the concentration of iron, cadmium, manganese, cobalt, chromium, zinc, magnesium, calcium, nickel, lead and copper in mg/kg in sediments sampled.Some specific physico-chemical characteristics, such as TDS, pH, Temperature and conductivity which are known to influence the interactions and dynamics of metals within the sediment. The mean value of the metals listed above in all the six locations gave 126.09mg/kg, 0.000mg/kg, 0.538mg/kg, 0.000mg/kg, 0.141mg/kg, 1.789mg/kg, 1.258mg/kg, 9.49mg/kg, 0.000mg/kg, 0.112mg/kg and 0.0827mg/kg respectively.. The result of the analysis It shown that the concentrations of heavy metal like Zn, Pb, Cr, Ca, Cu, Co, Mg, Mn, Cd and Ni in the sediment are low, but require monitoring to prevent an increase. Hence the concentration of Fe is higher when compared with the WHO and FEPA standard for sediment which may constitute risk to the environment. The concentration of heavy metals varies for the different locations. Based on the result of the analysis, recommendations were offered to reduce the concentration of heavy metal of the river.
Investigation of heavy metals content (Cd , Ni and Pb) in the muscle tissue o...Innspub Net
This study has been done to determine the amount of the heavy metals like Cd, Ni, and Pb in the muscle tissue of Hoof benthic fish (Psettodes erumei) and urban pelagic fish (Lethrinus nebulosus) in Qeshm Island in the north of the Persian Gulf. On the whole, the heavy metal content of 30 tissue samples was randomly measured by atomic absorption spectrometer. The mean amount of Cd and Ni in benthic Hoof was significantly greater than that in the Urban pelagic fish while the concentration of pb in urban pelagic fish was higher than that in the Hoof tissue samples (P<0.05). Our results showed that the concentration of the three measured heavy metals in the fishes studied was less than the standard levels proposed by WHO and FAO. Get via original link: http://www.innspub.net/jbes/investigation-of-heavy-metals-content-cd-ni-and-pb-in-the-muscle-tissue-of-two-commercial-fishes-of-the-qeshm-island-persian-gulf/
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Estuaries are well known for their potential in removing metal from fresh water to provide micro-nutrients to aquatic life. In the present investigation, we have tried to bring out the metal removal potential of estuaries during accidental spills. For this purpose artificial river water containing high concentration of Mn, Cu, Zn, Ni and Pb were mixed with sea water at different salinity regimes. Water samples were taken from a station on the main branch of Tajan River that flows in to the Caspian Sea. For this purpose, solutions with a concentration of 5 mg/L of each studied metal (Mn,Cu, Zn, Pb) were prepared in Tajan River water. The salinity regimes include 3, 6, 8, 10 and 11 ppt. It was noted that metal concentration decreased by increasing salinity. Metals were flocculated at different rates: Cu (88%) > Ni (86%) > Pb (84%) > Mn (74%).Thus, as average about 80% of total elemental content flocculates. Hence, it was concluded that a large amount of micro nutrients is carried by the river and flocculated in the estuary where the river water mixes with the sea water which may play a vital role in supplying nutrients to the aquatic animals. Cluster analyses have shown that Mn and Ni are governed by EC, pH and salinity.
Food security in a growing population with limited natural resources is one of
the most important issues of the world. Accumulation of heavy metals in food and
their concentrations increase and reaching to a risk limit can threaten human health.
The purpose of this study, is to study the heavy metals lead and cadmium in
vegetables, cultured on spinach and watercress at 10 Gardens of Ardabil. This study is
cross-sectional and 81 samples in water, soil, and spinach and watercress were
prepared during the months of June, July and August in 2015 and after preparation
according to the standard methods and using atomic absorption spectrophotometer
(Perkin Elmer) for the determination of heavy metals. SPSS software was used for data
analysis. The results showed that the mean level of lead and cadmium in all samples
were less than the EPA standard. Between studied orchards in terms of the amount of
cadmium and lead no statistically significant different was seen. The independent ttest
showed that in terms of cadmium between two species of spinach and watercress
there found a significant difference at the 5% level so that the amount of cadmium in
spinach was more than the watercress. Since the concentration of heavy metals in all
samples at second and third stages in July and August were zero, but in the first step
in June, the amount of heavy metals have been found in some samples showed that
all three samples of first cut had more contamination than second and third cut. And
in this case, the concentration of heavy metal pollution in hibernation at vegetable
gardens Ardabil is possible. The results of spinach cadmium amount in the first cut in
the three garden of viz.,3, 6 and 10 showed that in the garden (3), the amount of
cadmium in water is higher than the standard and is concentrated in spinach and the
gardens of 6 and 10 Cadmium in the soil of the gardens, is slightly higher that is
condensed in spinach thus it can be considered that spinach in terms of cadmium has
bioaccumulation.
Trace Metals Concentration in Shallow Well Water in Enugu Metropolispaperpublications3
Abstract: This work assesses the concentration of heavy metals in Enugu Municipal well-water considering the fact that some Enugu inhabitants depend on well-water as their major source of water supply. Water from twenty four (24) different hand dug wells from six locations were investigated for Zn, Cu, Pb, Mn, Cd, and Fe using Atomic Absorption Spectroscopy (AAS). The result of the study expressed as the means and standard deviations were compared to WHO and EU standards for drinking water, and it was found that well waters from Iva-Valley and Uwani areas suffer from Cd and Mn pollution. The remaining four locations (Emene, Asata, Abakpa Nike and Achara Layout) were all free from Cd and Mn pollution. Cu, Zn, Fe and Pb concentrations were either completely absent or below world threshold limits at all the locations.
Interaction on the diet and substrate on the growth of Archachatina marginata...Innspub Net
Nine hundred juveniles of Archachatina marginata aged about two weeks, with an average live weight of 2.25 g with an average shell length of 20.12mm were monitored in culture for six (6) months on five types of substrates [S1 (soil collected in a cassava plantation: Manihot sp.), S2 (S1 with 10% oyster shell meal), S3 (S1 with 10% sawdust), S4 (S1 with 5% oyster shell meal and 5% sawdust) and S5 (uncultivated forest soil). Four diets including two industrial (D1 and D 2 of 12% and 16% calcium respectively) and two based on fodder (D3 and D4 based on leaves and fruit of the papaya (Carica papaya) on the one hand and a mixture of papaya leaves and taro (Xanthosoma maffafa) on the other hand, were used. In order to determine the best combinations inducing the best growth performance, 20 combinations were formed at the rate of 45 spat for each combination; three replicas of 15 spat each. This study showed that the combination of diet and livestock substrate influences the growth of Archachatina marginata. Although the best feed is D1 (74.68 g and 7.94cm) and the best substrate is S2 (77.12 g and 7.79cm), the best combinations are D2S3 (69.37 g and 7.47cm), D1S4 (74.68 g and 7.94cm and D4S2 (77.12 g and 7.79cm). The combined effect of the high level of dietary calcium and that of the culture substrate does not promote good growth of snails. This work will help improve the production of African giant snails and provide important data for anyone wishing to engage in the breeding of these animals.
Nutritional assessment status of adult patients with multiple sclerosis: A na...Innspub Net
No previous research has assessed the nongenetic factors, especially the nutrition status of MS patients in Arab countries. Hence, this study aims to assess the nutritional status of MS patients among Arab adults. This study is a nationally representative cross-sectional study using a structured, online self-administered, validated quantitative food frequency questionnaire (FFQ) from 13 Arab countries. All data analyses were performed using STATA 16.0 and R for statistical computing version 4.0.4. A total of 813 participants were surveyed, most of the MS participants were female (68.4%), married (58.5%), non-smoker (72.6%) and 53.3% were diagnosed with MS for up to five years. MS participants did not consume the DRI of both the macro and the micronutrients including the energy requirements, except the dietary intake of the sodium which was insignificantly different from the DRI. Results also showed that most participants rarely consumed the main food items including bread, cereals, and most types of meat. While, more than 50% of the participants consumed fruit, vegetables, all types of chicken, fish, fresh soup, rice, and egg up to 3 times per month. On the other hand, milk and milkshake were consumed rarely; while, tea and herbal teas were the most common beverages. Nutrient deficiencies are very common among MS Arab patients. The finding of this study can establish a base for the development of a nutritional program for MS patients in accordance with the recommended DRI.
Evaluation of Talisay (Terminalia catappa) nuts by-productsInnspub Net
Sensory evaluation or analysis is an invaluable tool in determining the consumers’ acceptability of a product developed and eventually its market success. This is a sequel test after the chemical analysis and microbiological procedures have been conducted. The study determined the level of acceptability of the by-product of Talisay (Terminalia catappa) nuts specifically; Talisay Nuts Polvoron, Glazed Talisay Nuts, and Sugar-coated Talisay Nuts using sensory evaluation as to appearance, taste, aroma, sweetness, and texture. The responses of the food inclined participants are described yielding from the Hedonic Tests conducted and statistically treated. Results concluded that the developed products are remarkably acceptable and marketable.
Germination and seedling growth of Moringa oleifera, Moringa stenopetala and ...Innspub Net
A germination test was carried out to identify plants that can germinate and survive in polluted soil (with and without ash) collected 2.5km east and 2.5km west, 20km west and 55km west (control) of the BCL Cu/Ni mine smelter in Selebi-Phikwe, Botswana. The experiment was carried out using Phaseolus vulgaris, Moringa oleifera and Moringa stenopetala. Soil acidity and heavy metal stress reduced germination percentage, coefficient rate of germination, root and shoot growth and dry weight, root: shoot, vigour index and tolerance index of all species. Percentage reduction followed the order 2.5km west < 20km west < 2.5km east < 55km west. Phaseolus vulgaris, Moringa oleifera and Moringa stenopetala germinated in all soils. Their ability to germinate in polluted soil indicates tolerance to heavy metal and soil acidity stress and so they have potential for use in phytoremediation of polluted soils around the mine. Phaseolus vulgaris had the highest overall germination performance but there was no significant difference between the Moringas. Application of coal fly ash increased all the germination parameters and so coal fly ash has potential for use in amending polluted soil around the mine for phytoremediation purposes.
Identification and marketing of Marantaceae in the Ndjolé area, in central Ga...Innspub Net
The forests of the Congo Basin cover an area of 200 million hectares, of which just over 10% is in Gabon. In this country, crop products and non-timber forest products (NTFPs) are abundant because of its favourable climate. There is significant biodiversity and great potential for non-timber forest products. This study is interested in the identification and the supply chain of the Marantaceae, one of these NTFPs of plant origin in central Gabon, whose exploitation is national. Through a survey of the main actors in the sector and field visits in the locality of Bifoun, it emerges the existence of three large groups of exploited marantaceae, whose harvest and transport are mainly done by women, in various containers. The storage of this NTFPs does not exceed four days, with the risk of losing its commercial value due to drying out. The uses of this resource are multiple: processing cassava, cooking food, making handicrafts, etc. The income it provides to producers is mainly use towards small family expenses but helps to monetize the rural world. The difficulties inherent in the distance from harvesting points, the low price of the product and the impossibility of long-term storage of the marantaceae leaves constitute a brake on the development of this activity. It would therefore be wise to envisage the domestication of the species listed for a sustainable use of this plant genetic resource.
Ethnobotany of Oyster nut (Telfairia pedata) in Northern Tanzania | JBES 2022Innspub Net
Telfairia pedata (Sims) Hook is an important native climber plant commonly grown in East Africa. It bears nuts which are eaten either raw or cooked and is consumed mostly by expectant mothers, and as cooking oil. The survey was conducted between September 2019 to February 2020 in Sambaa, Meru, and Pare communities of Lushoto, Bumbuli, Arumeru and Same Districts, Northern Tanzania to assess the ethnobotany of T. pedata from a sample of 346 respondents using semi-structured questionnaires. Results indicate that, 21% of respondents used T. pedata for cooking with other staple foods while 18% claimed that the nuts are used by pregnant and lactating mothers for medicinal and breast milk stimulation and nine (9) percent indicated that the nuts are used for cultural and ritual purposes. Despite its importance, the cultivation of T. pedata in the study area is declining and the gap why such decline is experienced needs to be answered in further studies. Secondly, respondents within the 36-50 age groups reported the greatest diversity of uses of T. pedata 51% compared with those aged below 36 years old 21% signifying that the traditional knowledge known by younger aged groups may be declining. Thus, this gap of traditional knowledge between the groups should be addressed in order to improve utilization and conservation of this seriously declining yet important nut in the study area and other places of Tanzania.
The amphibian’s fauna of a West African forest relict near a hydroelectric Da...Innspub Net
This study reports the amphibian’s fauna sampled from the Biodiversity Conservation Area of the hydroelectric dam of Soubré city (southwestern Côte d’Ivoire). This study aims to provide a better understanding of the diversity of amphibians in this relict forest of 200 ha, in order to assess the ecological health of this ecosystem for conservation and sustainable management perspectives. During dry season (from 26 February to 4 March 2018) and rainy season (from 17 to 23 June 2018), we recorded 14 species of anurans grouped into eight genera and six families. The study sites comprise an amphibian fauna consisting mainly of savannah specialists and degraded forest (64.28% of total species richness). Based on the IUCN Red List, all species recorded are of least concern. Also, these species are well distributed in the different regions of Côte d’Ivoire and Africa. Thus, it is necessary to monitor the ecology of the species and to protect subsequently the different habitats of this area.
Genetic parameter estimates and diversity studies of upland rice (Oryza sativ...Innspub Net
Dearth of well-articulated information on genetic parameter estimates and diversity of upland rice limits the genetic improvement of rice. This study assessed the genetic parameter estimates and genetic diversity among 40 rice accessions using 26 agro-morphological traits. The trial was conducted in 2020 at the Njala University experimental site using 5 × 8 triple lattice design. The agro-morphological traits were analyzed using various multivariate and genetic parameter estimate techniques. Classification based on qualitative and quantitative traits grouped the germplasm into ten and five distinct clusters, respectively. Genotypes Buttercup-ABC, Buttercup-RARC, Jewulay, NERICA L4, Ndomawai, Sewulie and Painipainie produced earliest days to heading (81.8–97.2 days) and maturity (111.2 – 120.7 days). Genotypes Jasmine (3.036 t.ha-1), Rok 34 (3.238 t.ha-1) and Parmoi (2.663 t.ha-1) exhibited the highest grain yields. Principal component analysis (PCA) of qualitative traits exhibited four principal components (PCs) with eigenvalues > 1.0 and cumulative variation of 68.04%, whilst the PCA of quantitative traits had five PCs accounting for 81.73% of the total genetic variation. The findings indicate the presence of enough variability that could be exploited for the genetic improvement of rice varieties and the studied traits can be used for selection. Leaf blade length and width, culm diameter at basal internode, culm length, days to 50% heading, flag leaf girth, panicle number per plant, grain yield, and 100 grain weight had high heritability and genetic advance indicating the presence of additive gene action. Findings are relevant for conservation, management, short term recommendation for release and genetic improvement of rice.
Valorization of the duckweed (Spirodela polyrhyza) in the feeding of mono sex...Innspub Net
In order to evaluate the effect of Spirodela polyrhiza using in diets of Oreochromis niloticus fingerlings, an experiment was conducted on the farm “Awara” in the village of Agongo in Sèmè – Kpodji during 70 days. The initial average weight of fry is about 1g. The stocking density was 13 fry / m². Three experimental diets made with local by-products were tested: T0 (0% S. polyrhiza Meal), T1 (5% S. polyrhiza Meal) and T2 (mixed feed composed of 70% T0 and 30% fresh S. polyrhiza). At the end of the experiment, the survival rate was 100% for all treatments. The best zootechnical parameters were obtained with T1 with a final average weight of 11.67 ± 2.52 g and a consumption index of 1.17 ± 0.30. The highest gross profit margin was also obtained with T1. The lowest economic profitability was obtained.
Anthropogenic noise reduces bird species richness and diversity along a Rur-u...Innspub Net
Urbanization is increasing rapidly in all parts of the world to accommodate the increasing human population but it is having a drastic effect on native flora and fauna. The present study was carried out across a three stage urbanization gradient in and around the city of Bilaspur, Chhattisgarh. Observations were made from September 2019 to February 2021 at the selected three sites during COVID 19 pandemic. Point count method was used for bird surveys and Sound pressure (Noise) measurements were made across the three selected sites. The Avian diversity was measured by total species richness, Fisher’s alpha diversity index and Shannon-Wiener diversity index. The Urban centre recorded the highest sound pressure and lowest Avian species richness but as we moved away from the urban centre the noise levels reduced and the avain species richness increased towards the rural areas. This is mainly due to many avian species avoiding urban areas because of increasing noise levels. We also found that the urban bird community is dominated by a few species whereas the rural bird community was much more diverse.
Construction health and safety model towards adoption | IJB 2022Innspub Net
This study aimed to assess the safety and health of contractors in Zamboanga Del Norte, Philip-pines, in terms of workforce, workplace, and work implements. It also aimed to evaluate compliance with occupational health and safety standards regarding occupational safety and health training, a health and safety plan, civil works activities, and heavy equipment operations. It combined quantitative research with a self-created questionnaire that explains and forecasts concepts that can be applied to other people and locations and objectively measures the variable(s) of interest, selected, constructed, and standardized with validity and reliability in mind. The findings revealed that respondents only partially adhered to construction safety and health in personnel, workplace, and work equipment. Occupational health and safety criteria were partially met in occupational safety and health training, health and safety plans, civil works activities, and heavy equipment operations. The Level of Compliance for construction safety and health was also partially met. As a result, it is advised that construction companies will adopt the revised construction safety model.
Chemical composition of essential oil compounds from the callus of fennel (Fo...Innspub Net
Fennel (Foeniculum vulgare Miller.), a herbaceous, perennial and aromatic from Apiaceae family, which is used for pharmaceutical, food, health and cosmatic are cultivated in different parts of Iran and much of the world. In this study, the amount of trans-anethole in callus gained from tissue culture of fennel six belonging to different regions of Iran and Turkey have been compared. Tissue culture is a randomized trial. Factor of evaluating in the first node (hypocotyl) has been as explants and hormonal composition of 2,4-D+Kinetin and NAA+BAP was used for callus induction. Callus extracts were extracted by using organic solvent and finally the effective compound was determined, using GC/MS. The results show that the highest percentage of essential oil compounds in callus of E,E 2,4-Decadienal of 46.22% and cineole were 1,8 of the 35.17 percent, respectively. Our results indicate that the derived callus from fennel plants in the MS environment and with herbal hormone has been able to produce volatile compounds.
Evaluation of some maize (Zea mays L.) genotypes for resistance to stem borer...Innspub Net
The field experiments were conducted at Agricultural Research Corporation (ARC) , Kassala and Gash Research Station Farm, Takro of, Sudan. During the two winter seasons (2016/017 and 2017/018) respectively to evaluate some grain maize genotypes for resistance to stem borer and identify the most tolerance of these genotypes to Stem Borer infestation. Thirteen (STB.G1, STB.G2, STB.G3, STB.G4, STB.G5, STB.G6, STB.G7, STB.G8, STB.G9, STB.G10, STB.G11) maize genotypes were used in this study: with two check of maize variety (check. 1(Mugtama45) and ckeck. 2 (Var.113),). The experiments were arranged in Randomized Complete Block design (RCBD) with three replications. The data collected were used in this study were : Germination percentages, plant population, plant height, ear height, ear length, days to 50% Tasselling, days to 50% silking, ear length, ear diameter, cob diameter, number of rows/ear, number of kernels/row, 100 Kernel weight and Yieldkg/ha. Results showed that the most encouraging genotypes (STB.G 11, STB.G10, STB.G 4, STB.G 6 and STB.G8) of maize production at Kassala state were obtained a high value for potential of grain yield (4132, 3723, 3611, 3302 and 3264kg/ha) respectively, and for the most important of yield components. Among the traits considered, the yield (kg/ha) was the most promising as an indicator of tolerance to stem borer infestation.
Impact of climate change on wheat yield using remote sensing technique | JBES...Innspub Net
The present study demonstrates the ability of GIS and RS in capturing the spatial temporal data. The changing climatic conditions in the country effects the agriculture. The impacts of climate change are not only restricted to the agricultural productivity of the Pakistan but changing climate also impose destructive impacts on the Land use change practices. Three districts of Punjab i.e. Attock, Multan and Gujrat were selected for analysis of climatic effect on wheat production. The time span that is used for analyzing the change in these areas was from 1999-2014. Climatic changes are not always negative ones but sometimes climatic changes are favoring the increased agricultural production. As the change in temperature and rainfall pattern affects the crop conditions, which changes the net production. It is concluded that for real time prediction of crop yield satellite remote sensing could be used for timely management of food crisis in Pakistan as well as in the world.
Extreme weather events and their impact on urban crop production: A case of K...Innspub Net
Extreme weather events are anticipated to increase the existing challenges and generate new combination of vulnerabilities, especially in developing countries. The agricultural sector is the most vulnerable due to overreliance on unpredictable rainfall. This study examined the impact of extreme weather events on urban crop production and the adaptation strategies applied by the farmers. Secondary data were collected through a literature survey and primary data were collected using structured interviews, observations and focus group discussions. A total of 108 crop farmers were interviewed in two wards of Kinondoni District. The Statistical Package for Social Sciences (SPSS) version 20 was used to analyze the data and Pearson Chi-square was used to test the statistical significance between variables. The study observed that, farmers perceived extreme weather events including floods (39%), extreme temperatures (36%), and drought (25%). These extreme weather events affected negatively crop production leading damaging of crops and low yields (38%), outbreak of crop pests and disease (38%), drying of water sources (20%), and loss of soil fertility (4%). Crop farmers used various adaptation strategies such as crop diversification (28%), the use of pesticides (23%), changing of cropping patterns and planting calendar (16%), irrigation practices (18%) and replanting (10%). The study recommends for adoption of new farming systems such as vertical farming systems for better output with the use of limited water and land resources.
Effectiveness of community forest association and water resource users’ assoc...Innspub Net
Catchment degradation has continued to occur globally albeit the presence of Community Forest Associations (CFA) and Water Resource Users Associations (WRUA). Similarly, Kilungu catchment area in Kenya is under the management of the Kenze (CFA) and upper Kaiti (WRUA). This paper examined Kenze CFA and Upper Kaiti WRUA activities by exploring their effectiveness in discharging their statutory functions. This was achieved by carrying out, an exploratory descriptive survey. Data was collected through questionnaires, focus group discussions, 10 key informants’ interviews and direct observations. Descriptive analysis was used. Information was presented in fig.s, tables and percentages. Results showed that upper Kaiti WRUA as more effective in catchment management at moderately (31%) and highly at (37%) as compared to CFA moderately (29%) and highly (5%). In terms of discharging of their statutory functions, Upper Kaiti WRUA was better at a rating of 27% (good) and 23% (very good) as compared to Kenze CFA which was rated at 3% (good) and 6% (very good). This study results implied that Upper Kaiti WRUA was more effective in all aspects of ensuring catchment management as opposed to CFA. In conclusion, a strategy of seizing the opportunities presented by the CFA of being empowered to perform all its activities as required by law with emphasis on the timely preparation and implementation of management plans and WRUA’s continuous improvement should be prioritized. The study recommends new initiatives that improve on the CFA and WRUA activities in order to effectively discharge on their statutory functions.
Smallholders socio-economic characteristics of oil palm value chain: Constrai...Innspub Net
The study on the Smallholders Socio-Economic Characteristics Oil Palm Value Chain: Constraints and Prospects was conducted in the Littoral region of Cameroon with the used of multi-sampling technique. The study made used of secondary and primary data sources. Data that were collected through survey involved the distribution of structured questionnaires to a sample of 400 smallholders who were purposively selected from two sub-divisions. The data collected through these questionnaires were analysed using Statistical Package for Social Science and Micro Soft Excel, and the interpreted resulted were presented using descriptive method, pie charts and in tables. Results indicated actors in the value chain were faced the constraints of inadequate capital, inadequate storage facilities, and fluctuation in market prices, inadequate roads, among others. Results further indicated that the activity was important as it provided opportunities such as job creation, health enhancement, education enhancement, income amelioration among others to the actors in the value chain.
Liming leads to high bean and maize yield on a strongly acid tea soil | IJAAR...Innspub Net
Acid soils are very common in tea zones. These soils have a pH below 5.0. Below this pH, not only do the soils exhibit toxicity of aluminum and manganese but are deficient of calcium, magnesium, phosphorus and molybdenum, hence becoming chemically infertile. Liming is one cheap way of reclaiming these soils. The staple food crops in these tea soils are maize and beans. However the effect of different liming levels on bean (Phaseolus vulgaris L.) and maize (Zea maiys, L.) yield on acid tea-growing ando-humic Nitisol had not before been investigated. A study was therefore conducted to determine the crop response to liming and the appropriate liming level for maize and bean crops in a tea zone soils. The experiment was carried out in Embu County, Kavutiri and Kianjokoma areas, Agro-Ecological Zone (AEZ) UM1. A randomized complete block design with four replications of each lime treatment was used at each site. Lime at rates of 0 (L0), 2.4 (L1), 6 (L2), 8 (L3) t/ha was broadcasted on to 4m x 4m plots and mixed into 0-15cm of soil. There was a significant response to liming for both maize and beans. The maximum maize and beans yield was attained at around liming level L2 (pH 5.5). Above this pH, yields started to decline. The study clearly shows the benefits of soil liming on strongly acid tea soils and also the importance of accurate lime applications.
Total phenolics and total flavonoids of extracts from freshwater Clam (Corbic...Innspub Net
The ethanol, ethyl acetate, and hexane extracts of the freshwater clam (Corbicula fluminea) were studied for the total phenolics and total flavonoids. Total phenolics and total flavonoids of the extracts were evaluated using Folin-Ciocalteau and Aluminum chloride colorimetric methods respectively. The findings showed that the total phenolics of the ethanol extract (1.67±0.28mg GAE/g of dried sample) were substantially higher than the total phenolics obtained from the ethyl acetate (0.70±0.00mg GAE/g) and hexane extracts (0.56±0.23mg GAE/g). While the total flavonoids in the ethyl acetate extract displayed a slightly higher total flavonoid (43.84±0.92mg QE/g of dried sample) relative to ethanol (30.41±1.34mg QE/g of dried sample) and hexane extracts (20.28±0.00mg QE/g of dried sample). Using ethanol, the highest yield for extraction was obtained. Ethanol is the best solvent among the three – ethanol, ethyl acetate, and hexane in terms of extraction yield and total phenolics. In addition, it can be inferred that the presence of significant amounts of phenolics and flavonoids suggests that freshwater clam is a promising source of antioxidants that provides nourishing proteins and oxidative stress remedies
Spatial-temporal variation of biomass production by shrubs in the succulent k...Innspub Net
Forage production in arid and semi-arid rangelands is not uniform but varies with seasons and in various landscapes. The aim of this study was to investigate the spatial and temporal variation in forage production in RNP. Plants sampling was carried out in 225 plots distributed in each of the five vegetation types. In each vegetation strata, sampling points was based on proximity to an occupied stock post, a rain gauge, a foothill and flat plains. A total of were measured in the 5 study sites. Line Intercept Method in combination with harvest method were used in ground measurement of biomass production. To assess biomass production using remote sensing technique, par values were obtained from Moderate Resolution Imaging Spectroradiometer (MODIS) imageries which consisted of 8 days composite images at spatial resolution of 1km² pixel size. There was positive correlation between line intercepts and biomass production Biomass production was higher in succulent Karoo biome than in desert biome. There was a strong relationship between biomass production with rainfall and with fpar values. Since leaf and stem succulents’ plants were found to contribute the highest amount of forage production in RNP, they should be given conservation priority.
Top 8 Strategies for Effective Sustainable Waste Management.pdfJhon Wick
Discover top strategies for effective sustainable waste management, including product removal and product destruction. Learn how to reduce, reuse, recycle, compost, implement waste segregation, and explore innovative technologies for a greener future.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
different Modes of Insect Plant InteractionArchita Das
different modes of interaction between insects and plants including mutualism, commensalism, antagonism, Pairwise and diffuse coevolution, Plant defenses, how coevolution started
Bioaccumulation of Lead (Pb) content in three species bivalves in Jakarta Bay, Indonesia
1. J. Bio. & Env. Sci. 2023
51 | Rumanta et al.
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Bioaccumulation of Lead (Pb) content in three species bivalves
in Jakarta Bay, Indonesia
Maman Rumanta*
Universitas Terbuka, Jakarta, Indonesia
Article published on February 11, 2023
Key words: Bioaccumulation, Lead, Bivalves, Jakarta bay
Abstract
Environmental pollution by heavy metals has become a serious problem in Jakarta Bay. Mobilization of heavy
metals as a result of anthropogenic activities has caused the release of heavy metals into the environment, one of
which is Pb. Several methods already used to clean up the environment from these kinds of contaminants, but
most of them are costly and difficult to get optimum results. In addition heavy metal pollutans in the waters are
very stable and tend to be persistent. Recently, bioaccumators is an effective and affordable technological
solution used to extract or remove inactive metals and metal pollutants from contaminated soil and water. This
technology is environmental friendly and potentially cost effective using bivalves. These study objectives to
analyzed the Pb content of three species of Jakarta Bay bivalves. The results showed that Pb content in the
Eastern and Western Season bivalve tissue was significantly lowest in P. viridis (0,166 ± 0,016μg/g dan 0,161 ±
0,155μg/g) compared the Pb concentration in A. antiquata (0,264 ± 0,015μg/g dan 0,247±0,044μg/g), and M.
meretrix (0,270 ± 0,016μg/g dan 0,240 ± 0,053μg/g). In this study also showed that the concentration of heavy
metal Pb in the bivalve shell of P. viridis was significantly lower than that of two species (A. antiquata and M.
meretrix). Pb content in the Eastern Season bivalves did not significantly different from that in the Westerrn
Season. This is caused by a weather anomaly where the rainy season occurs almos throughout year of 2020. The
Pb content in the bivalves shell was significantly higher than in the body tissues. It is because Pb can replace
calcium ions in the formation of animal bones or bivalve shells.
*Corresponding Author: Maman Rumanta mamanr@ecampus.ut.ac.id
Journal of Biodiversity and Environmental Sciences (JBES)
ISSN: 2220-6663 (Print) 2222-3045 (Online)
Vol. 22, No. 2, p. 51-57, 2023
http://www.innspub.net
2. J. Bio. & Env. Sci. 2023
52 | Rumanta et al.
Introduction
Jakarta is the biggest city in Indonesia, with more
than 10.64 million inhabitants in 2021 (BPS Jakarta,
2022). The increasing of development rate in all fields
in Jakarta city resulted in a positive effect on the
society living standard improvement. On the other
hand, it gave the negative impact namely the presence
of waste production (liquid and soil) which
continuously increase (Dhokhiyah and
Trihadiningrum, 2012). Muara Angke is a delta in
North Jakarta Bay where surrounded by Asin river in
the east, Adem River in the west, and Jakarta Bay in
the North. Jakarta Bay is an area in the north of
Jakarta City which is experiencing quite high heavy
metal pollution. Generally pollution in the Jakarta
Bay is due to anthropogenic activity and this is
common in Indonesia due to certain factors
associated with terrestrial run-off and eutrophication
(Baum et al., 2015). Most household and industrial
wastes with high levels of pollutants are not treated
properly but disposed directly into Jakarta Bay (Rees
et al., 1999; Baum et al., 2016).
Wulp et al. (2016), added that the Jakarta Bay,
received a large number of pollutants that are sourced
from agricultural activities, industry and domestic
waste from the area of Jakarta and surrounding areas.
This asserted that the Jakarta Bay is a waters
ecosystem which is subjected to high ecological and
economic pressures from humans. In addition, the
linkage of coastal areas of Jakarta Bay to the
mainland area through watersheds (DAS) with 13
watersheds that leads to Jakarta Bay, making the
coastal areas of Jakarta Bay as trap sediments,
nutrients and pollutants from upstream, which is very
effect on biological productivity and water quality of
Jakarta Bay waters (Dsikowitzky et al., 2016).
Waste disposal into the environment will cause
pollution and role to supply Pb contamination in
Jakarta Bay, disturb public health (Rumanta, 2005;
Cordova et al., 2012). Rompas (2010), asserted Pb is
heavy metal very hazardous not only for waters biota
that lives in the area but also for human who consume
the biota. Waste containing Pb is commonly comes
from industrial waste of paint, battery, car fuel, and
pigment (Mukhtasor, 2007 as cited by Selanno et al.,
2015). Van der Meij et al. (2010), asserted that the
local anthropogenic impacts have caused dramatic
changes in aquatic ecosystems. The same is added by
Bellwood et al. (2004) that contaminated waters
caused changes in the composition of fauna
worldwide. Baum et al. (2015), asserted a clear
separation of benthic and fish communities between
reefs in Jakarta Bay and reefs along the Thousand
Islands further north, and Wulp et al. (2016),
reported that the percentage of heavy metal
contaminants already occupy a high gradient around
the Jakarta Bay.
Bivalves as benthic animals are able to reflect the
increased bioavailability of heavy metals in the
environment. Bivalves are widely used in activities as
bioindicators and biomonitoring of pollution in the sea.
This is because in general bivalves have a wide
geographic distribution, large population, relatively
stable in locations with heavy contamination, long life,
sedentary life, tolerant of environmental changes and
pollutants, have a value of bioconcentration factor (BCF)
of pollutants which height, and body size make it easier
to observe in the field and laboratory (Barka 2012).
Research conducted by Rumanta (2018) reported that
nine rivers that empties into Jakarta Bay which were
used as research samples were contaminated with
heavy metals Pb in concentrations that had exceeded
the threshold set by the Minister of Environment,
2004. The highest concentration was in the Ciliwung
River which reached 0.117 ± 0.017 µg/ml in West
Season. This occurs due to the low awareness of the
population and industrial managers in Jakarta on
environmental health.
As stated by Maryadi (2009) that currently it is
predicted that there are 14 thousand cubic of waste
from domestic waste and industrial waste polluting
the 2.8 square kilometer bay. In addition Rumanta
(2005) stated that the level of Pb and Cd pollution
can be determined by examining the levels in marine
biota that live in a polluted environment.
3. J. Bio. & Env. Sci. 2023
53 | Rumanta et al.
Research conducted by Otchere (2003), reported that
compared to fish and crustaceans, bivalves have very
low enzyme activity for the metabolism of persistent
organic pollutants (POPs), so that the concentration
of pollutants in bivalves more accurately reflects
bioaccumulation. The study of heavy metal
bioaccumulation in marine bivalves was mostly
studied using the mussel groups, especially the
Mytilidae family i.e the blue clam (M. edulis) and the
green clam (P. viridis), the oysters group i.e
Crassostrea, and Ostrea, the clams group i.e
Corbicularia, and Cerastoderma, as well as the scallops
group especially Pecten (Arockia et al., 2012; Torres et
al., 2012; Priya et al., 2011; Boateng et al., 2010). This
strengthens the reasons for scientists to always
research this marine biota and determine the
concentration limits of pollutants that are at risk for
human consumption. This study objective to analyzed
the Pb content of three species of bivalves.
The results of this study will provide an implicit
solution to the bivalve species that have great potential
to act as bioaccumulatory agents in Jakarta Bay.
Materials and methods
This research was conducted in Jakarta Bay, North
Jakarta in two periods based on the division of
seasons is Western season (November to March) and
Eastern season (April to October) 2020. Pb tests on
species bivalves is done using flame AAS in the
laboratory of Research Center for Biology, Indonesian
Institute of Sciences (LIPI) Bogor.
Analysis of Pb content of Three Species Bivalves
This research was conducted by direct observation
technique in Jakarta Bay (In situ Measurement) and
laboratory analysis. At the study site, five stations (ST1 to
ST5) were selected for data collection based on
information from fishermen about the existence of
bivalves (Fig. 1).
Fig. 1. A map showing the geographic localization of the five sampling sites analyzed in this study.
Tissue samples from three species of bivalves were
collected from five observation stations. Each
sample was collected in three replications (triplo),
dried, then crushed, and weighed. Tissue samples
were then ashed using muffle furnace at 435°F and
digested using 1 ml of HNO3 and 0.5 ml of HClO3.
These were filtered and made up to volume 25 ml
using 25% HNO3 and analyzed using flame AAS.
The research data were analyzed using one way
ANOVA to determine difference of Pb
concentration at three species bivalves with
software of SPSS version 21.
4. J. Bio. & Env. Sci. 2023
54 | Rumanta et al.
Results and discussion
Accumulation of Pb in Tissue and Shell from Three
bivalves Based on laboratory analysis, the concentration
of Pb in tissue (Table 1) and bivalve shells (Table 2) was
obtained in two different seasons (Western and Eastern
seasons). The data in Tables 1 and 2 describe the
accumulation of Pb in each bivalve species. The results
of this accumulation will answer and give meaning to the
effectiveness of Pb accumulation from three species of
bivalves. Understanding the heavy metal Pb in the tissue
of a species is the key to proving the application of
bioaccumulation in that species (Rumanta, 2018; 2019).
Table 1. Accumulation of Pb in the tissue of three
species Bivalves in Western and Eastern seasons
(μg/g wet weight).
Species Bivalves
Content of Pb (X ± SD)
Western season Eastern season
Anadara
antiquata
0,247 ± 0,044 A 0,264 ± 0,015A ns
Perna viridis 0,161 ± 0,155B 0,166 ± 0,016B ns
Meretrix
meretrix
0,240 ± 0,053A 0,270 ± 0,016A ns
Note: Oneway Anova: Different capital letters (A, B) in the
same column indicate significant differences (p<0.05) in Pb
content between shellfish species.
T-test, ns= no significant difference between season in Pb
content (p<0.05) each species
Data in Table 1, showed that the Pb concentrations in the
tissues of the three species bivalves in the Eastern and
Western seasons are not significantly different, but there
is a tendency for bivalve heavy metal content in the
Eastern seasons to be higher than in the Western
seasons. The Pb content in the Eastern and Western
Season bivalve tissue was significantly lowest in P.
viridis (0,166 ± 0,016μg/g dan 0,161 ± 0,155μg/g)
compared the Pb concentration in A. antiquata (0,264 ±
0,015μg/g dan 0,247±0,044μg/g), and M. meretrix
(0,270 ± 0,016μg/g dan 0,240 ± 0,053μg/g).
The data showed that Pb content in tissue P. viridis
was significantly lower than in A. antiquata and M.
meretrix. This is thought to be closely related to the
habitus profile of A. antiquata and M. meretrix which
has a way of life by immersing themselves in mud
(Novita, 2018; Aprilia dan sudibyo, 2019), whereas P.
viridis has a habitus profile by sticking to hard
substrates, such as wood, bamboo, hard structured
mud, nets for cultivation fish, and hulls with using
byssus threads (Cappenberg, 2008). The content of
heavy metal Pb in bivalve tissue between seasons in
this study did not showed a significant difference.
This may be due to climatic conditions in 2020, with
high rainfall throughout the year, while the dry
season is quite short. However, there is a tendency
that the heavy metal content of Pb in bivalve soft
tissue in the Eastern seasons is higher than in the
Western seasons. The results of this study are
consistent with research by Rumanta (2005), which
reported that the heavy metal content of marine
fishery products in the Eastern Season tends to be
higher than the Western Season. It is evident that the
concentration of Pb increases in the Eastern Season
compared to the Western Season.
Table 2. Accumulation of Pb in the shells of Three
Bivalves in Western and Eastern seasons (μg/g wet
weight).
Species Bivalves
Content of Pb (X ± SD)
Western season Eastern season
Anadara
antiquata
4,128±0,565A 4,380± 0,249A ns
Perna viridis 2,428 ±0,566B 2,674 ± 0,726B ns
Meretrix meretrix 3,209 ± 0,897A 3,578 ± 0,255A ns
Note: Oneway Anova Different capital letters (A, B) in the
same column indicate significant differences (p<0.05) in Pb
content between shellfish species.
T-test, ns= no significant difference between season in Pb
content (p<0.05) each species
Data in Table 2 showed that the Pb concentration in
the bivalves shell was much higher than the Pb
concentration in the tissue. The concentration of Pb in
the Eastern and Western seasons did not differ
significantly, but there was a tendency that the heavy
metal concentration in shells in the Eastern seasons
was higher than in the Western seasons. The
concentration of heavy metal Pb in P. viridis was
significantly lower than that of other bivalve species.
Based on Table 1, showed that the Pb content in the
soft tissue of all bivalves is still below the threshold set
by SNI (2009) and CCFAC (1999) of 1.5 µg/g for Pb,
although it is still above the threshold for heavy metal
content in processed food determined by the Head of
BPOM Regulation No. 5 of 2018 (0.2 mg/kg for Pb).
5. J. Bio. & Env. Sci. 2023
55 | Rumanta et al.
This is still quite encouraging because the research
results of the last few years Wahyuningsih et al.,
(2015); the levels of Pb in Jakarta Bay are below the
threshold allowed by SNI (2009) and Head of BPOM
Regulation No. 5 of 2018. This may occur as the
structuring and improvement improve rivers that
cross the city of Jakarta, since the Reformation in
1998.
Table 3. Comparison of accumulation of Pb in the tissue and shells of Three Bivalves in Western and East
seasons (μg/g wet weight).
Species Bivalves
The Pb Conten in Western Seasson
(X ± SD )
The Pb content in Easter Seasson
(X ± SD )
Tissue Shell Tissue Shell
Anadara antiquata 0,247 ± 0,044 A 4,128 ± 0,565B 0,264 ± 0,015A 4,380± 0,249B
Perna viridis 0,161 ± 0,155A 2,428 ± 0,566B 0,166 ± 0,016A 2,674 ± 0,726B
Meretrix meretrix 0,240 ± 0,053A 3,209 ± 0,897B 0,270 ± 0,016A 3,578 ± 0,255B
Note: One way Anova: Different capital letters (A, B) in the same line indicate significant differences (p<0.05) in
Pb content
The data in Table 3 shows that the Pb content in the
shells of all bivalves at West monsoon and east
monsoon were significantly higher than in the tissues.
This happens because Pb can replace calcium ions in
the formation of bones or bivalve shells that require
calcium (Rumanta, 2005).
Then Crenshaw (1980) stated that shell composition
is controlled by the metabolic activity of the outer
mantle epithelium; it should then be assumed that the
integration of elements into shells during their
synthesis by the mantle would occur in simple
proportion to the amounts of the contaminants in the
soft parts. Therefore, contamination gradients
produced by the shells and the soft parts would be
expected to agree substantially. It must be understood
that shells are extremely difficult to work with, e.g.
insufficient cleaning will cause the inclusion of metals
in components other than the shell and too vigorous
cleaning may strip metals from the shell surface
(Phillips, 1980).
Afianti (2005) stated that not least amongst the
problems associated with the use of shells as indicator
materials is the difficulty experienced in analysis;
such as lead in the shell of this clam which acts
differently compared with other elements. Such data
do not lend confidence to a suggestion of using shells
of A. granosa as indicators of trace metals abundance
in marine or estuarine environments.
Conclusions
We asserted that the Pb content in the Eastern and
Western Season bivalve tissue was significantly lowest
in P. viridis (0,166 ± 0,016μg/g and 0,161 ±
0,155μg/g) compared the Pb concentration in A.
antiquata (0,264 ± 0,015μg/g dan 0,247±0,044μg/g),
and M. meretrix (0,270 ± 0,016μg/g dan 0,240 ±
0,053μg/g). The results of the present study showed
that the concentration of heavy metal Pb in the
bivalve shell of P. viridis was significantly lower than
that of two species i.e A. antiquata and M. meretrix.
Pb content in the Eastern Season bivalves did not
significantly different from that in the Westerrn
Season. This is caused by a weather anomaly where
the rainy season occurs almos throughout year of
2020. The Pb content in the bivalve shell was
significantly higher than in the body tissues. It is
because Pb can replace calcium ions in the formation
of animal bones or bivalve shells.
Acknowledgements
This research was conducted with funding from the
Indonesia Ministry of Research and Higher Education,
under the Directorate General of Higher Education
(DGHE). The author also thankful to the staffs of Biology
Education, Study Program, Faculty of Education and
Teacher Training, Universitas Terbuka, Jakarta,
Indonesia, especially for Dra. Anna Ratnaningsih, M.Sc.
and Dr. Rony M. Kunda, M.Sc. for their contribution to
this research, and also to all people involved in the in
6. J. Bio. & Env. Sci. 2023
56 | Rumanta et al.
Laboratorium of Research Center for Biology,
Indonesian Institute of Sciences (LIPI) Bogor for
providing necessary logistic during the sampling work
and sample analysis. The author also thankful for
Laboratory Staff from Indonesian Institute of Science,
who have helped analyze the Pb concentration of Three
species bivalves was collected in Jakarta Bay.
Conflict of interest
The author declares that there is no conflict of
interest.
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