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Planktivorous auklet Ptychoramphus aleuticus responses to ocean climate, 2005: Unusual atmospheric blocking?
Abstract
In spring‐summer 2005, anomalous atmospheric‐oceanographic coupling caused unprecedented reproductive failures and redistribution of a planktivorous marine bird in both central California (37°N) and southern British Columbia (50°N). At SE Farallon Island, CA, the birds abandoned the breeding colony en masse between 10–20 May, a unique behavioral response; for the first time in 35 years, reproductive success was zero. At Triangle Island, B.C., only 8% of the nesting pairs were successful, the worst year on record. Surveys of birds at sea revealed a peak in relative abundance south of Point Conception (34°N) in summer and fall, suggestive of emigration from the north. Prey (euphausiid crustacean) biomass in the Gulf of the Farallones was reduced, but remained high south of Point Conception. Change in predator and prey may be explained, in part, by unusual atmospheric blocking in the Gulf of Alaska in May, which caused the jet stream to shift southwards resulting in poor upwelling‐favorable winds and anomalously warm SST. This study demonstrates the deleterious consequences of this climate event for a top marine predator in the central‐northern California Current System.
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“and therefore, they serve as excellent indicators (high signal-to-noise ratio) of climate-ecosystem shifts [82].”
From Anticipated Effects of Climate Change on Coastal Upwelling Ecosystems (2015) · cites this paper as [82]
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“and has been applied to cod stocks in the North Sea [90] as well as salmon and seabirds in California [82,91].”
From Anticipated Effects of Climate Change on Coastal Upwelling Ecosystems (2015) · cites this paper as [82]
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Metadata
- Authors
- Sydeman, W. J., Bradley, R. W., Warzybok, P., Abraham, C. L., Jahncke, J., Hyrenbach, K. D., Kousky, V., Hipfner, J. M., & Ohman, M. D.
- Affiliations
- Point Blue Conservation Science (US)
- University of Washington (US)
- National Oceanic and Atmospheric Administration (US)
- Simon Fraser University (CA)
- Scripps Institution of Oceanography (US)
- ORCID
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2006-10-21
- Volume
- 33
- Issue
- 22
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2164037590
- Cited by
- 191
- References
- 25
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 1 · 2023: 5 · 2022: 4 · 2021: 9 · 2020: 9 · 2019: 6 · 2018: 3 · 2017: 4 · 2016: 9 · 2015: 6 · 2014: 13 · 2013: 21 · 2012: 8
- FWCI
- 15.88
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geophysical Research Letters (publishedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
- Physical Sciences › Environmental Science › Ecology › Marine animal studies overview
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Marine and fisheries research
- Keywords
- Ptychoramphus aleuticus, reproductive failure, atmospheric blocking, ocean climate variability, upwelling, sea surface temperature, Gulf of the Farallones, California Current System, emigration
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