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A hypothesis-testing framework for studies investigating ontogenetic niche shifts using stable isotope ratios

Hammerschlag-Peyer, Caroline M ; Yeager, Lauren A ; Araújo, Márcio S ; Layman, Craig A Thrush, Simon

PloS one, 2011-11, Vol.6 (11), p.e27104-e27104 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
A hypothesis-testing framework for studies investigating ontogenetic niche shifts using stable isotope ratios
Autor: Hammerschlag-Peyer, Caroline M ; Yeager, Lauren A ; Araújo, Márcio S ; Layman, Craig A
Thrush, Simon
Assuntos: Analysis ; Argyrosomus japonicus ; Biology ; Bivalvia ; Community structure ; Consumers ; Diet ; Dynamic structural analysis ; Ecology ; Ecosystem ; Ecosystem biology ; Ecosystems ; Empirical analysis ; Fishes ; Food chains ; Habitats ; Hypotheses ; Investigations ; Isotope ratios ; Isotopes ; Morphology ; Multivariate analysis ; Niche overlap ; Niche position ; Ontogeny ; Organisms ; Population biology ; Population dynamics ; Science ; Structure-function relationships ; Studies
É parte de: PloS one, 2011-11, Vol.6 (11), p.e27104-e27104
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Conceived and designed the experiments: CMHP CAL. Performed the experiments: CMHP LAY MSA CAL. Analyzed the data: CMHP LAY MSA. Contributed reagents/materials/analysis tools: CMHP LAY MSA CAL. Wrote the paper: CMHP CAL.
Descrição: Ontogenetic niche shifts occur across diverse taxonomic groups, and can have critical implications for population dynamics, community structure, and ecosystem function. In this study, we provide a hypothesis-testing framework combining univariate and multivariate analyses to examine ontogenetic niche shifts using stable isotope ratios. This framework is based on three distinct ontogenetic niche shift scenarios, i.e., (1) no niche shift, (2) niche expansion/reduction, and (3) discrete niche shift between size classes. We developed criteria for identifying each scenario, as based on three important resource use characteristics, i.e., niche width, niche position, and niche overlap. We provide an empirical example for each ontogenetic niche shift scenario, illustrating differences in resource use characteristics among different organisms. The present framework provides a foundation for future studies on ontogenetic niche shifts, and also can be applied to examine resource variability among other population sub-groupings (e.g., by sex or phenotype).
Editor: United States: Public Library of Science
Idioma: Inglês

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A hypothesis-testing framework for studies investigating ontogenetic niche shifts using stable isotope ratios

Hammerschlag-Peyer, Caroline M ; Yeager, Lauren A ; Araújo, Márcio S ; Layman, Craig A Thrush, Simon

United States: Public Library of Science

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