Climatic Influences on Survival of Migratory African Reed WarblersAcrocephalus baeticatusin South Africa
| Autor: | Dorine Y. M. Jansen, Res Altwegg, Adam M. Wilson |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
education.field_of_study
biology Ecology Population Northern Hemisphere Climate change Structural basin biology.organism_classification Normalized Difference Vegetation Index Geography Acrocephalus Animal Science and Zoology Mean radiant temperature education Southern Hemisphere Ecology Evolution Behavior and Systematics |
| Zdroj: | Ardea. 103:163-174 |
| ISSN: | 0373-2266 |
| DOI: | 10.5253/arde.v103i2.a5 |
| Popis: | The focus of most research on the influence of recent climate change on birds has been on the northern hemisphere. Climate change has been different in the southern hemisphere, prohibiting extrapolation from northern research findings — and inference regarding future climate change — to species living there. We investigated the correlation between climatic conditions and survival of a migratory population of African Reed Warblers Acrocephlaus baeticatus in Paarl, South Africa. We used temperature and rainfall in its breeding area, and Normalized Difference Vegetation Index (NDVI) in its wintering area, Central Africa around the Congo Basin. We fitted capture-mark-recapture models for open populations to a 12-year ringing dataset (1998–2010). After accounting for transience — this species exhibits high breeding site fidelity — with a ‘Time-Since-Marking’ model we found a mean survival probability of 0.79 ± 0.04 SE. Rainfall and NDVI did not influence survival in this dataset. Mean temperature (Aug–Apr) had... |
| Databáze: | OpenAIRE |
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