Seabird synthesis

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Overall, the status of seabirds was fair to good in the WGOA in 2020, with limited data available from Middleton Island, Cook Inlet, and the Kodiak Archipelago (Figure 63). Colony attendance remains low in some populations compared to historic levels, and some colonies were newly abandoned. However, when birds did arrive to breed, reproductive success generally appeared fair to good for fish-eating, surface-feeding birds and fish-eating, diving birds. There was spatial variability in colony  attendance and reproductive success, with Middleton Island birds performing more strongly than Kodiak Island or Cook Inlet. Middleton Island populations from both these groups experienced their strongest breeding seasons since the marine heatwave began in 2014, suggesting an increase in the availability of small schooling fish in that region of WGOA. No large-scale mortality event was recorded based on monthly beach surveys in the WGOA. This year’s integrated approach to reporting seabird status is less comparable to previous Ecosystem Status Reports, as the Alaska Maritime National Wildlife Refuge’s seabird reproductive success time series were not updated, due to COVID-19 related survey cancellations.

Study Area

Publication type Book chapter
Publication Subtype Book Chapter
Title Seabird synthesis
Year Published 2020
Language English
Publisher NOAA
Contributing office(s) Alaska Science Center Biology MFEB
Description 8 p.
Larger Work Type Report
Larger Work Subtype Federal Government Series
Larger Work Title Ecosystem status report 2020 Gulf of Alaska
First page 121
Last page 128
Country United States
State Alaska
Other Geospatial Cook Inlet, Gulf of Alaska. Kodiak Archipelago, Middleton Island,
Google Analytic Metrics Metrics page
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