The position that a species occupies in a food chain. The species it eats are at a lower trophic level, and the species that eats it are at a higher trophic level.
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http://en.wikipedia.org/wiki/Glossary_of_fishery_terms
Fish at higher trophic levels usually have a higher economic value, which can result in overfishing at the higher trophic levels. Earlier reports found precipitous declines in mean trophic level of fisheries catch, in a process known as fishing down the food web. However, more recent work finds no relation between economic value and trophic level;...
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http://en.wikipedia.org/wiki/Trophic_level
Amount of energy in terms of food that an organism needs. Note: Organisms not needing organic food, such as plants, are said to be on a low trophic level, whereas predator species needing food of high energy content are said to be on a high trophic level. The trophic level indicates the level of the organism in the food chain.
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http://sis.nlm.nih.gov/enviro/iupacglossary/glossaryt.html
step in a nutritive series, or food chain, of an ecosystem. The organisms of a chain are classified into these levels on the basis of their feeding ... [5 related articles]
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http://www.britannica.com/eb/a-z/t/84
Different levels or steps in the food chain.
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http://www.conservewildlifenj.org/glossary/
The level within a food chain in which all members are equally far removed from the primary food producers.
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http://www.daviddarling.info/encyclopedia/T/trophic_level.html
A trophic level is a level of the grazing food chain. For example, plant-eaters are primary consumers; they occupy the second trophic level in the grazing food chain.
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http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
Position in the food chain, determined by the number of energy-transfer steps to that level.
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http://www.encyclo.co.uk/local/20945
<biology> Stage in a food chain or web leading from primary producers (lowest trophic level) through herbivores to primary and secondary carnivores (consumers- highest level). ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
the position in the food chain determined by the number of energy-transfer steps to that level (Ricklefs 1970:881).
Found on
http://www.encyclo.co.uk/local/21070
the position in the food chain determined by the number of energy-transfer steps to that level (Ricklefs 1979:881).
Found on
http://www.encyclo.co.uk/local/22030
the position in the food chain determined by the number of energy-transfer steps to that level (Ricklefs 1979881).
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http://www.encyclo.co.uk/local/22216
Functional classification of organisms in a community according to feeding relationships; the first trophic level includes green plants; the second trophic level includes herbivores the third carnivores.
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http://www.encyclo.co.uk/visitor-contributions.php
(Living things in their environment) feeding levels of a food chain
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http://www.encyclo.co.uk/visitor-contributions.php
Level of organization in the grazing food chain.
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http://www.physicalgeography.net/physgeoglos/t.html
The position that a species occupies in a food chain. The species it eats are at a lower trophic level, and the species that eats it are at a higher trophic level.
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http://www.translationdirectory.com/glossaries/glossary245.php
In a food chain, a level containing organisms of identical feeding habits with respect to the chain (e.g., herbivores)
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https://www.encyclo.co.uk/local/20125
A segment of the food chain in which all organisms obtain food and energy in, basically, the same manner (e.g., photosynthesis, herbivory, or carnivory) and in which all organisms are the same number of links from the photosynthetic segment.
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https://www.encyclo.co.uk/local/20128
In ecology, the position occupied by a species (or group of species) in a food chain. The main levels are primary producers (photosynthetic plants), primary consumers (herbivores), secondary consumers (carnivores), and decomposers (bacteria and fungi)
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https://www.encyclo.co.uk/local/21221
An organism’s hierarchical level on the food chain, determined by the organisms it eats and what organisms eat it.
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https://www.globalchange.gov/climate-change/glossary
A description of the position occupied by an organism in a food chain or food web. Simply put, an organism’s trophic level is defined by what it eats and what eats it. Examples of trophic levels include producers, consumers, and decomposers.
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https://www.shmoop.com/study-guides/biology/ecology/terms
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