Nest Predation Risk
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Teste de fatores que afetam o tamanho da ninhada de Elaenia chiriquensis (Tyrannidae) do Cerrado do Brasil Central
The study of the selective pressures that determine clutch size is essential to understand lifehistory strategies. Brood manipulation studies are the standard tools for testing the influence of food availability, nest predation risk and increasing parental effort on limitation of clutch size. In order to assess the relative importance of food limitation to t
Publicado em: 2008
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2. Experimental evidence of environmental effects on age-specific reproductive success: the importance of resource quality.
Age-specific access to high-quality resources (e.g. territory or nest site) might be an important determinant for improved reproductive performance with increasing age. I experimentally investigated the effects of territory quality versus other age-related improvements in breeding competence (e.g. foraging skills, breeding experience and local knowledge) on
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3. Predators as stressors? Physiological and reproductive consequences of predation risk in tropical stonechats (Saxicola torquata axillaris).
Tropical birds usually lay smaller clutches and are less likely to initiate a second brood than their temperate-zone relatives. This reduction in annual fecundity is generally explained as an adaptation either to higher rates of nest predation or to a more limited food supply concurrent with higher adult survival in the tropics. However, the physiological pa