An ecosystem consists of the biological community and abiotic environment in a specific locale. There are three major classes of ecosystems: freshwater, terrestrial, and ocean. Terrestrial ecosystems include seven major types that vary based on location and precipitation levels, such as tropical rainforests, savannas, deserts, temperate grasslands, deciduous forests, coniferous forests, and tundra. Oceans cover most of the Earth and contain shallow ocean waters, deep ocean waters, and deep ocean surface ecosystems.
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Types of ecosystem
1. An ecosystem consists of the biological
community that occurs in some locale, and the
physical and chemical factors that make up its
non-living or abiotic environment
2. There are 3 Major classes of ecosystems.
1. Freshwater Ecosystems
2. Terrestrial Ecosystems
3. Ocean Ecosystems
3. Relatively small in area ~ 1.8% of earth's surface
Support many species of life including fish,
amphibians, insects and plants.
Base of food is found in freshwater Plankton
(small microscopic organisms)
4. Many & diverse types of ecosystems. There are
seven major types.
Location usually dependent on the latitude of the
area, and amount of precipitation.
16. 20-60cm/year
Short growing season, cold winters.
Northern Asia;Northern North America
17.
18. 25cm/year
Open; wind swept; dry; ground always frozen
Far northern Asia; Northern North America
19.
20. Very large amount of Earth is covered by ocean
(~75%)
40% of all photosynthesis occurs in oceans.
3 types of oceanic ecosystems
21. 1. Shallow ocean waters
2. Deep ocean water
3. Deep ocean surface.
◦ Only occurs in Deep ocean surface & Shallow ocean
ecosystems
◦ No photosynthesis can occur in deep ocean because
light cannot penetrate deeply into water.