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Tufted puffin reproduction reveals ocean climate variability
Carina Gjerdrum1, Anne M J Vallée, Colleen Cassady St Clair
1Centre for Wildlife Ecology, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada V5A 1S6.
Summary
Rising sea surface temperatures (SSTs) negatively impact tufted puffin (Fratercula cirrhata) reproductive success. This study highlights puffins as key indicators of climate change impacts on North Pacific marine ecosystems.
Area of Science:
- Marine Biology
- Climate Change Science
- Ornithology
Background:
- Anomalously warm sea-surface temperatures (SSTs) are linked to climate variability and global warming.
- Oceanic temperature shifts can significantly affect marine species' distribution and abundance.
- Predicting climate change impacts on vulnerable marine populations is critical.
Purpose of the Study:
- To investigate the relationship between SST variations and tufted puffin reproductive performance.
- To assess the vulnerability of tufted puffins to climate change off the coast of British Columbia.
- To determine if tufted puffins can serve as indicators of biological change in the North Pacific.
Main Methods:
- Analysis of 16 years of tufted puffin reproductive data (1975-2002).
- Correlation of reproductive performance metrics with seasonal and interannual SST fluctuations.
- Assessment of nestling growth rates and fledging success in relation to SST.
Main Results:
- Extreme variations in tufted puffin reproductive success were significantly related to SST changes.
- Periods of especially warm SSTs corresponded with decreased nestling growth rates and fledging success.
- Puffins demonstrated some ability to adjust breeding phenology in response to within-season SST changes.
Conclusions:
- Tufted puffins off British Columbia are highly vulnerable to the effects of ongoing climate change.
- Warming ocean temperatures pose a significant threat to the largest Canadian tufted puffin colony on Triangle Island.
- Tufted puffins can serve as valuable indicators of climate change impacts on North Pacific marine ecosystems.