Trophic Level

The trophic level of an organism is the position it occupies in a food chain. The word trophic derives from the Greek τροφή (trophē) referring to food or feeding. A food chain represents a succession of organisms that eat another organism and are, in turn, eaten themselves. The number of steps an organism is from the start of the chain is a measure of its trophic level. Food chains start at trophic level 1 with primary producers such as plants, move to herbivores at level 2, predators at level 3 and typically finish with carnivores or apex predators at level 4 or 5. The path along the chain can form either a one-way flow or a food "web". Ecological communities with higher biodiversity form more complex trophic paths.

Read more about Trophic Level:  Overview, Biomass Transfer Efficiency, Fractional Trophic Levels, Mean Trophic Level, FiB Index, See Also

Other articles related to "trophic level, trophic, trophic levels, level":

Trophic Level - See Also
... Cascade effect Energy flow (ecology) Trophic cascade Trophic state index – applied to lakes Trophic dynamics - Food web ...
Trophic
... The trophic level of an organism is the position it occupies in a food chain ... The word trophic derives from the Greek τροφή (trophē) referring to food or feeding ... of steps an organism is from the start of the chain is a measure of its trophic level ...
Trophic - Overview
... Trophic levels can be represented by numbers, starting at level 1 with plants ... Further trophic levels are numbered subsequently according to how far the organism is along the food chain ... Level 1 Plants and algae make their own food and are called primary producers ...
Wild Fisheries - Marine Fisheries - Biomass
... is usually the primary producer (the first level in the food chain or the first trophic level) ... These are the second level in the food chain, and include krill, the larva of fish, squid, lobsters and crabs–as well as the small crustaceans called ... Zooplankton is consumed both by other, larger predatory zooplankters and by fish (the third level in the food chain) ...
Fractional Trophic Levels
... Food webs largely define ecosystems, and the trophic levels define the position of organisms within the webs ... But these trophic levels are not always simple integers, because organisms often feed at more than one trophic level ... of a juvenile animal, and consequently its trophic level, can change as it grows up ...

Famous quotes containing the word level:

    It is the American vice, the democratic disease which expresses its tyranny by reducing everything unique to the level of the herd.
    Henry Miller (1891–1980)