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A Trophic group refers to a category of within a , defined according to their mode of .
Based on their mode of feeding, organisms can be referred to a small number of trophic groups. These include:
- - produce food from sunlight (photosynthesis) or chemical reactions (plants, photosynthetic and chemautotropic bacteria)
- - feed on living plants. They include
- / - capture, kill, dismember (usually), and feed on live prey.
- - feeds on animals or plants, generally anything it can find
- - consume dead and/or partially decayed organisms. Most tetrapod predators will also scavenge (generally easier than tackling a live and fighting prey)
- - feed on another (usually larger) organism (whether plant or animal) without (usually) killing it. Two kinds: live externally to the host, while live internally. (such as wasps) differ from true parasites by eventually killing the host.
- (also called Filter feeders) - collect particulate matter or microorganisms from suspension in the water without need to subdue or dismember the particles.
- - feed on decaying organic matter in the soil
- (aquatic) - collect particulate matter from the sediment
- - breaks down decaying organic matter - e.g. Fungi, bacteria
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- Benchley, P.J. & Harper, D.A.T. (1998), Palaeoecology: Ecosystems, Environments and Evolution, Chapman & Hall, pp.240-1
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MAK010508, MAK020519, Palaeos org MAK061101