Evidence map›Paper›PMID 24979778›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Herbivore diet breadth mediates the cascading effects of carnivores in food webs.

Michael S Singer, Isaac H Lichter-Marck, Timothy E Farkas, Eric Aaron, Kenneth D Whitney, Kailen A Mooney

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Michael S SingerDepartment of Biology, Wesleyan University, Middletown, CT 06459; msinger@wesleyan.edu.
Isaac H Lichter-MarckDepartment of Biology, Wesleyan University, Middletown, CT 06459;
Timothy E FarkasDepartment of Biology, Wesleyan University, Middletown, CT 06459;Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, United Kingdom;
Eric AaronDepartment of Computer Science, Vassar College, Poughkeepsie, NY 12604;
Kenneth D WhitneyDepartment of Biology, University of New Mexico, Albuquerque, NM 87131; and.
Kailen A MooneyDepartment of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697.

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

Predicting the impact of carnivores on plants has challenged community and food web ecologists for decades. At the same time, the role of predators in the evolution of herbivore dietary specialization has been an unresolved issue in evolutionary ecology. Here, we integrate these perspectives by testing the role of herbivore diet breadth as a predictor of top-down effects of avian predators on herbivores and plants in a forest food web. Using experimental bird exclosures to study a complex community of trees, caterpillars, and birds, we found a robust positive association between caterpillar diet breadth (phylodiversity of host plants used) and the strength of bird predation across 41 caterpillar and eight tree species. Dietary specialization was associated with increased enemy-free space for both camouflaged (n = 33) and warningly signaled (n = 8) caterpillar species. Furthermore, dietary specialization was associated with increased crypsis (camouflaged species only) and more stereotyped resting poses (camouflaged and warningly signaled species), but was unrelated to caterpillar body size. These dynamics in turn cascaded down to plants: a metaanalysis (n = 15 tree species) showed the beneficial effect of birds on trees (i.e., reduced leaf damage) decreased with the proportion of dietary specialist taxa composing a tree species' herbivore fauna. We conclude that herbivore diet breadth is a key functional trait underlying the trophic effects of carnivores on both herbivores and plants.

Indexed as

DietFood ChainAdaptation, BiologicalAnalysis of VarianceAnimalsBirdsCarnivoryConnecticutHerbivoryHumansLarvaModels, BiologicalMothsPhylogenyTime FactorsTreesecological specializationhost specificityplant–herbivore interactionstritrophic interactionstrophic cascade

Identifiers

PMID24979778
PMCPMC4084428

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.