In a food chain, a level containing organisms of identical feeding habits with respect to the chain (e.g., herbivores).
any distinct feeding level in a food chain.
A group of organisms united by obtaining their energy from the same part of the food web of a biological community.
Steps on a food/biomass pyramid that are defined by organisms within a community that are the same distance from the primary producers in a food web.
functional classification of organisms in a community according to feeding relationships; the first trophic level includes green plants, the second level includes herbivores, and so on
All organisms that are the same number of energy transfers away from the original source of energy (for example, sunlight) that enters an ecosystem. For example, all producers belong to the first trophic level, and all herbivores belong to the second trophic level in a food chain or a food web.
One of the steps in a food chain.
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.
One of the hierarchical strata of a food web characterized by organisms that are the same number of steps removed from the primary producers.
A level in the food chain. The first trophic level consists of the primary producers, autotrophs. The second trophic level is vegetarians which consume autotrophic organisms.
A stage in the food chain (for example, primary consumers)
a species position in the food chain as determined by their place in the energy transfer in the ecosystem. Plants are first, as they derive their energy from the sun. Animals that feed on plants are second and animals that feed on other animals are the third.
a group of organisms whose feeding source is the same number of steps from the Sun
a level of this grazing food chain
All the members of an ecological community that are the same number of food-chain steps from the primary source of energy.
The different stages of a food chain. Organisms that are removed from the beginning of the chain by the same number of steps are said to occupy the same trophic level.
the position of a species in a food chain, indicating its level of energy transfer in the ecosystem.
TRO-pik LEV-l A feeding level in an ecological community. 859
a feeding level in a food chain
the classification of organisms in an ecosystem based on feeding habits, from first level autotrophs to several levels of heterotrophs
Each of the steps in a food chain.
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 (Source: Carbon Dioxide Information Analysis Center, 1990). www.globalchange.org/glossall/glosss-u.htm A number indicating the position of a species within an ecosystem. By definition, plants have a TL = 1, herbivores TL = 2, and so on, up to a TL = 5 in killer whales and polar bears. Note that trophic levels do not need to be whole numbers; intermediate values occur among fishes and other animals with a mixed diet composition. The phrase "fishing down marine food webs" refers to the increased tendency for marine landings to consist of animals with lower trophic levels. research.amnh.org/biodiversity/symposia/archives/seascapes/glossary.html
Layer in the food chain in where one group of organisms serves as the source of nutrition of another group of animals.
(3) the level in the nutritive series of an ecosystem in which a group of organisms in a certain stage in the food chain secures food in the same general manner. The first or lower trophic level consists of producers (green plants), the second level consists of herbivores, the third level consists of secondary carnivores, and the fourth level consists of reducers (decomposers).
level in a food chain, e.g., producer, primary consumer, secondary consumer, tertiary consumer.
Step in the movement of energy through an ecosystem; and organism¡¦s feeding status in an ecosystem.
a grouping of organisms that uses the next lower grouping of organisms as a food source within the food web
Amount of energy in terms of food that an organism needs: 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 WHO, 1979
A location in the hierarchy of feeding relationships within an ecosystem.
Representing one step in the food web with number of individuals, energy, or biomass.
Position in the food chain; determined by the number of energy-transfer steps.
Level of organization in the grazing food chain.
Feeding level in a food chain or pyramid; for example, herbivores constitute one trophic level.
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.
The position in the food chain relative to eating and being eaten; including primary producers, primary consumers, and higher consumers.
In ecology, the trophic level (Greek trophē, food) is the position that an organism occupies in a food chain - what it eats, and what eats it.