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food chain

food chain The transfer of energy from green plants (the primary producers) through a sequence of organisms in which each eats the one below it in the chain and is eaten by the one above. Thus plants are eaten by herbivores, which are then eaten by carnivores. These may in turn be eaten by different carnivores. The position an organism occupies in a food chain is known as its trophic level. In practice, many animals feed at several different trophic levels, resulting in a more complex set of feeding relationships known as a food web. See bioenergetics; consumer; producer; pyramid of biomass; pyramid of energy; pyramid of numbers.

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"food chain." A Dictionary of Biology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food chain." A Dictionary of Biology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-2

"food chain." A Dictionary of Biology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-2

food-chain

food-chain The transfer of energy from the primary producers (green plants) through a series of organisms that eat and are eaten, assuming that each organism feeds on only one other type of organism (e.g. earthworm → blackbird → sparrowhawk). At each stage much energy is lost as heat, a fact that usually limits the number of steps (trophic levels) in the chain to four or five. Two basic types of food-chain are recognized: the grazing and detrital pathways. In practice these interact to give a complex food-web.

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"food-chain." A Dictionary of Ecology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food-chain." A Dictionary of Ecology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-0

"food-chain." A Dictionary of Ecology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-0

food chain

food chain The transfer of energy from the primary producers (green plants) through a series of organisms that eat and are eaten, assuming that each organism feeds on only one other type of organism (e.g. earthworm → blackbird → spar-rowhawk). At each stage much energy is lost as heat, a fact that usually limits the number of trophic levels in the chain to four or five. Two basic types of food chain are recognized: the grazing and detrital pathways. In practice chains interact to give a complex food web.

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"food chain." A Dictionary of Zoology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food chain." A Dictionary of Zoology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain

"food chain." A Dictionary of Zoology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain

food-chain efficiency

food-chain efficiency The ratio between the energy value (the nutritional value, discounting indigestible parts such as hair or feathers) of prey consumed by a predator and the energy value of the food eaten by that prey. Maximum food-chain efficiency (gross ecological efficiency) occurs when the yield of prey to the predator is such that the surviving prey just consume all the available food: this implies that the food of the prey is being exploited to the best advantage by the predator.

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"food-chain efficiency." A Dictionary of Ecology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food-chain efficiency." A Dictionary of Ecology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-efficiency

"food-chain efficiency." A Dictionary of Ecology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-efficiency

food-chain efficiency

food-chain efficiency The ratio between the energy value (the nutritional value, discounting indigestible parts such as hair or feathers) of prey consumed by a predator and the energy value of the food eaten by that prey. Maximum food-chain efficiency (gross ecological efficiency) occurs when the yield of prey to the predator is such that the surviving prey just consume all the available food: this implies that the food of the prey is being exploited to the best advantage by the predator.

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"food-chain efficiency." A Dictionary of Plant Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food-chain efficiency." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-efficiency-0

"food-chain efficiency." A Dictionary of Plant Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-efficiency-0

food-chain efficiency

food-chain efficiency The ratio between the energy value (the nutritional value, discounting indigestible parts such as hair or featehrs) of prey consumed by a predator and the energy value of the food eaten by that prey. Maximum food-chain efficiency (gross ecological efficiency) occurs when the yield of prey to the predator is such that the surviving prey just consume all the available food: this implies that the food of the prey is being exploited to the best advantage by the predator.

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"food-chain efficiency." A Dictionary of Zoology. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food-chain efficiency." A Dictionary of Zoology. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-efficiency-1

"food-chain efficiency." A Dictionary of Zoology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-efficiency-1

food chain

food chain Transfer of energy through a series of organisms, each organism consuming the previous member of the chain. Its main sequence is from green plants (producers) to herbivores (primary consumers) and then to carnivores (secondary consumers). Decomposers, such as bacteria and fungi, act at each stage, breaking down waste and dead matter into forms that can be absorbed by plants, thus perpetuating the chain. See also decomposition; photosynthesis

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"food chain." World Encyclopedia. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food chain." World Encyclopedia. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/food-chain

"food chain." World Encyclopedia. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/food-chain

food-chain

food-chain The transfer of energy from the primary producers (green plants) through a series of organisms that eat and are eaten. At each stage much energy is lost as heat, a fact that usually limits the number of steps (trophic levels) in the chain to 4 or 5. Two basic types of food-chain are recognized: the grazing and detrital pathways. In practice, these interact to give a complex food-web.

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"food-chain." A Dictionary of Plant Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food-chain." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-1

"food-chain." A Dictionary of Plant Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/food-chain-1

food chain

food chain The chain between green plants (the primary producers of food energy) through a sequence of organisms in which each eats the one below it in the chain, and is eaten in turn by the one above. Also used for the chain of events from the original source of a foodstuff (from the sea, the soil, or the wild) through all the stages of handling until it reaches the table.

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"food chain." A Dictionary of Food and Nutrition. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food chain." A Dictionary of Food and Nutrition. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/food-chain

"food chain." A Dictionary of Food and Nutrition. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/food-chain

food chain

food chain • n. a hierarchical series of organisms each dependent on the next as a source of food.

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"food chain." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food chain." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/food-chain

"food chain." The Oxford Pocket Dictionary of Current English. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/food-chain

food chain

food chain: see ecology.

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"food chain." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

"food chain." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 21, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/food-chain

"food chain." The Columbia Encyclopedia, 6th ed.. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/food-chain