Population decline in tree swallows (Tachycineta bicolor) linked to climate change and inclement weather on the breeding ground
| Autor: | Raleigh J. Robertson, Frances Bonier, Wallace B. Rendell, Amelia R. Cox |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
education.field_of_study Extinction biology Ecology 010604 marine biology & hydrobiology Population Fledge Climate change 15. Life on land biology.organism_classification 010603 evolutionary biology 01 natural sciences Predation Population decline 13. Climate action Tachycineta bicolor Juvenile education Ecology Evolution Behavior and Systematics |
| Zdroj: | Oecologia. 192:713-722 |
| ISSN: | 1432-1939 0029-8549 |
| DOI: | 10.1007/s00442-020-04618-8 |
| Popis: | Population decline and the threat of extinction are realities currently facing many species. Yet, in most cases, the detailed demographic data necessary to identify causes of population decline are unavailable. Using 43 years (1975−2017) of data from a box-nesting population of tree swallows (Tachycineta bicolor), we identified reduced survival of offspring as a probable demographic cause of population decline. Poor fledging success was associated with increased predation and poor weather conditions during early nestling development. Low juvenile survival and subsequent recruitment was linked to poor weather conditions during the post-fledging period and may also be linked to conditions on the wintering grounds. Regional weather conditions during critical stages of breeding (early nestling and post-fledging) have become progressively worse over the 43-year study period. None of the other factors linked to offspring survival have similarly deteriorated. Overall, our results suggest tree swallows should be added to the growing list of species challenged by climate change, and that other species of aerial insect specialists may face similar impacts of climate change. |
| Databáze: | OpenAIRE |
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