Relating trophic resources to community structure: a predictive index of food availability

Zupo, Valerio; Alexander, Timothy; Edgar, Graham J. (2017). Relating trophic resources to community structure: a predictive index of food availability. Royal Society Open Science, 4(2), p. 160515. The Royal Society Publishing 10.1098/rsos.160515

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The abundance and the distribution of trophic resources available for consumers influence the productivity and the diversity of natural communities. Nevertheless, assessment of the actual abundance of food items available for individual trophic groups has been constrained by differences in methods and metrics used by various authors. Here we develop an index of food abundance, the framework of which can be adapted for different ecosystems. The relative available food index (RAFI) is computed by considering standard resource conditions of a habitat and the influence of various generalized anthropogenic and natural factors. RAFI was developed using published literature on food abundance and validated by comparison of predictions versus observed trophic resources across various marine sites. RAFI tables here proposed can be applied to a range of marine ecosystems for predictions of the potential abundance of food available for each trophic group, hence permitting exploration of ecological theories by focusing on the deviation from the observed to the expected.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology

UniBE Contributor:

Alexander, Timothy

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

2054-5703

Publisher:

The Royal Society Publishing

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

12 Apr 2018 15:12

Last Modified:

12 Apr 2018 15:12

Publisher DOI:

10.1098/rsos.160515

PubMed ID:

28386417

BORIS DOI:

10.7892/boris.108578

URI:

https://boris.unibe.ch/id/eprint/108578

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