Title |
Reproductive responses of birds to experimental food supplementation: a meta-analysis
|
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Published in |
Frontiers in Zoology, October 2014
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DOI | 10.1186/s12983-014-0080-y |
Pubmed ID | |
Authors |
Lise Ruffino, Pälvi Salo, Elina Koivisto, Peter B Banks, Erkki Korpimäki |
Abstract |
Food availability is an important environmental cue for animals for deciding how much to invest in reproduction, and it ultimately affects population size. The importance of food limitation has been extensively studied in terrestrial vertebrate populations, especially in birds, by experimentally manipulating food supply. However, the factors explaining variation in reproductive decisions in response to food supplementation remain unclear. By performing meta-analyses, we aim to quantify the extent to which supplementary feeding affects several reproductive parameters in birds, and identify the key factors (life-history traits, behavioural factors, environmental factors, and experimental design) that can induce variation in laying date, clutch size and breeding success (i.e., number of fledglings produced) in response to food supplementation. |
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