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the claim

Certain species occupy multiple trophic levels within a food web

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Certain species, particularly omnivores and intraguild predators, regularly occupy multiple trophic levels within ecological food webs by feeding across different functional groups and resources.

The analysis

The claim is a well-established ecological fact concerning omnivory and trophic flexibility. Multiple retrieved papers explicitly discuss omnivores, intraguild predators, and species with generalized diets that operate across multiple trophic levels.

Evidence for · 5
Trophic supplements to intraguild predation
Recorded source metadata

Matthew P. Daugherty, Jason P. Harmon, Cheryl J. Briggs. Trophic supplements to intraguild predation. 2007. https://doi.org/10.1111/j.0030-1299.2007.15378.x

Discusses intraguild predation and omnivory, noting that consumers often feed across multiple trophic levels and modules.

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More for · 4
Bioaccumulation and potential human health risks of PAHs in marine food webs: A trophic transfer perspective.
Recorded source metadata

Huijuan Wang, Yilan Shu, Zexing Kuang, Zilin Han, Jiaheng Wu, Xinmiao Huang, Xiaoyong Song, Jing Yang, Zhengqiu Fan. Bioaccumulation and potential human health risks of PAHs in marine food webs: A trophic transfer perspective.. 2024. https://doi.org/10.1016/j.jhazmat.2024.136946

Categorizes marine organisms using stable isotope methods across multiple trophic levels, including omnivorous species.

Trophic plasticity of omnivorous fishes in natural and human‐dominated landscapes
Recorded source metadata

M. P. Neves, R. L. Delariva, Daniel M. Perkins, C. B. Fialho, P. Kratina. Trophic plasticity of omnivorous fishes in natural and human‐dominated landscapes. 2023. https://doi.org/10.1002/lno.12467

Highlights trophic plasticity in omnivorous fishes that expand their diets and occupy flexible trophic positions across environments.

Untangling the complex food webs of tropical rainforest streams.
Recorded source metadata

V. Saito, P. Kratina, G. Barbosa, Fabio Cop Ferreira, Jean Barbosa Leal, Gabriela Zemelka, Hugo Sarmento, Daniel M. Perkins. Untangling the complex food webs of tropical rainforest streams.. 2024. https://doi.org/10.1111/1365-2656.14121

Notes that omnivorous fish species connect multiple food web compartments through non-specialised interactions spanning different trophic roles.

Effects of competition and predation risk from a life history intraguild predator on individual specialisation.
Recorded source metadata

Richarson MRA, Ingram T. Effects of competition and predation risk from a life history intraguild predator on individual specialisation.. 2025. https://doi.org/10.1111/1365-2656.70090

Examines a native fish species with a generalized diet that competes and interacts across multiple trophic resource pathways.

The paper trail · every fact has a biography
first checked01 Aug 2026
judged → SUPPORTED · 8701 Aug 2026
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