How Resource Phenology Affects Consumer Population Dynamics.
Am Nat
; 187(2): 151-66, 2016 Feb.
Article
em En
| MEDLINE
| ID: mdl-26807744
ABSTRACT
Climate change drives uneven phenology shifts across taxa, and this can result in changes to the phenological match between interacting species. Shifts in the relative phenology of partner species are well documented, but few studies have addressed the effects of such changes on population dynamics. To explore this, we develop a phenologically explicit model describing consumer-resource interactions. Focusing on scenarios for univoltine insects, we show how changes in resource phenology can be reinterpreted as transformations in the year-to-year recursion relationships defining consumer population dynamics. This perspective provides a straightforward path for interpreting the long-term population consequences of phenology change. Specifically, by relating the outcome of phenological shifts to species traits governing recursion relationships (e.g., consumer fecundity or competitive scenario), we demonstrate how changes in relative phenology can force systems into different dynamical regimes, with major implications for resource management, conservation, and other areas of applied dynamics.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fenômenos Fisiológicos Vegetais
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Cadeia Alimentar
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Insetos
Limite:
Animals
Idioma:
En
Revista:
Am Nat
Ano de publicação:
2016
Tipo de documento:
Article