- Title
- Multi-directional effects of warming temperatures on the reproductive success of a threatened alpine-endemic bird, and implications for conservation management
- Creator
- Oswald, Krista N, Lee, Alan T K, Diener, John P, Diener, Elizabeth F, Cunningham, Susan J, Smit, Ben
- Subject
- To be catalogued
- Date
- 2019
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/441624
- Identifier
- vital:73902
- Identifier
- https://eco.confex.com/eco/2019/meetingapp.cgi/Paper/78223
- Description
- Mitigating the current biodiversity crisis requires a better understanding of how species will respond to future climate change and human impacts on habi-tat. Decreased reproductive capability, due to changes in phenology, output, and success, is one of the main indicators of species’ vulnerability. For terres-trial ground-nesting birds, overall reproductive success is often related to nest-site selection (e.g. increased nest concealment), and weather changes (e.g. higher air temperatures alter nest success). We investigated the reproductive success of Cape Rockjumpers (Chaetops frenatus; “Rockjumpers”), a ground-nesting alpine bird, endemic to the Fynbos biome of South Africa, whose popu-lation decline correlates to warmer temperatures. We predicted that breeding success would be positively correlated with increased nest concealment, and negatively correlated with increasing temperature. We collected data over three years, including two full breeding seasons, from 2016 to 2018 (n=5, n=20 and n=43 respectively), which included nest-site selection variables (i.e. vege-tative cover, rock cover, time since fire in years), success or failure (whether nest resulted in ≥ fledgling), and cause if nest failed (i.e. predation events, weather). We tested the overall success in relation to nest-site selection varia-bles, and then examined how nest failure (specifically snake predation) was correlated with air temperature.
- Format
- 15 pages, pdf
- Language
- English
- Relation
- 2019 ESA Annual Meeting, Oswald, K.N., Lee, A.T., Diener, J.P., Diener, E.F., Cunningham, S.J. and Smit, B., 2019, August. Multi-directional effects of warming temperatures on the reproductive success of a threatened alpine-endemic bird, and implications for conservation management. In 2019 ESA Annual Meeting (August 11--16). ESA, 2019 ESA Annual Meeting volume 2019 number 1 1 15 2019
- Rights
- Publisher
- Rights
- Use of this resource is governed by the authors
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Collections
Smit, Ben (Dr)
SDG 13. Climate Action
RU Department of Zoology and Entomology
SDG 15. Life On Land
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details | SOURCE1 | Multi-directional effects of warming temperatures on the reproductive success of a threatened alpine-endemic bird.pdf | 719 KB | Adobe Acrobat PDF | View Details |