Trophic levels refer to the position that organisms occupy in a food chain or food web. There are three main trophic levels: primary producers such as plants which obtain energy through photosynthesis; primary consumers like herbivores which eat producers; and decomposers such as fungi and bacteria which break down dead organic matter and waste. Energy and nutrients flow between these levels in ecological systems. Food chains show a linear energy transfer between trophic levels, while food webs illustrate a more complex web of interactions. Ecological pyramids depict how energy and biomass decrease at higher trophic levels due to inefficiencies in energy transfer between levels in ecosystems.
5. WHAT IS TROPHIC LEVEL ?
Trophic levels are the feeding
levels or positions in a food
chain or a food web , from where
organisms obtain their energy.
14. FOOD
CHAIN
A Food Chain is a
linear network of
links in each
Trophic levels
starting from
producer
organisms and
ending at apex
predator species ,
detritivores or
decomposer
species.
22. Energy and other limiting factors control
primary production in ecosystems
These production is done by the
Producers or by the autotrophs.
And for this initial production there in the
ecosystem has a dynamical role of
energy and nutrients.
23. Ecosystem Energy Budgets
The Global Energy Budget
Earth’s primary producers create about 150 billion
metric tons (1.50 x 10^14 kg) of organic material
each year.
Primary Productivity
Gross and Net Production
GPP (Gross Primary Production)
NPP (Net Primary Production)
NEP (Net Ecosystem Production)
Secondary Productivity
