DOI: 10.1111/jav.02318
论文题名: Use of sea ice by arctic terns Sterna paradisaea in Antarctica and impacts of climate change
作者: Redfern C.P.F. ; Bevan R.M.
刊名: Journal of Avian Biology
ISSN: 9088857
出版年: 2020
卷: 51, 期: 2 语种: 英语
英文关键词: arctic tern
; chlorophyll-a
; climate change
; geolocator
; polynya
; repeatability
; sea ice
; wintering areas
Scopus关键词: annual cycle
; chlorophyll a
; climate change
; isotopic analysis
; migration
; molt
; overwintering
; polynya
; sea ice
; seabird
; stable isotope
; Antarctica
; Atlantic Ocean
; Aves
; Euphausia
; Euphausiacea
; Sterna paradisaea
英文摘要: Arctic terns spend their breeding and non-breeding seasons in polar environments at opposite ends of the world. The sensitivity of polar regions to climate change makes it essential to understand the ecology of arctic terns but the remoteness of the Antarctic presents a considerable challenge. One solution is to use ‘biologgers’ to monitor remotely their behaviour and distribution in the Antarctic. Data from birds tagged with light-level global location sensors (geolocators) in 2015 and 2017 showed that a third of their annual cycle was spent amongst Antarctic sea ice. After reaching the East Antarctic in the austral spring, they gradually moved west, foraging in fragmented ice zones of the Antarctic coastline, leaving in the austral autumn for their return northward migration via the Atlantic. Changes in patterns of movement between phases of 24-h daylight and diel day/night conditions were likely linked to the annual moult, and stable isotope analyses suggest that krill (Euphausia species) was an important component of their diet. There were marked differences in movement behaviour between arctic terns tagged in 2015 compared to 2017 that may relate to unusual changes in sea-ice extent. The arctic tern may be unique amongst seabirds that utilise the Antarctic environment in summer in being able to move widely without nesting constraints, and may present a means of characterising the effects of climate change on species dependent for foraging on Antarctic sea-ice and krill. © 2019 Nordic Society Oikos. Published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159545
Appears in Collections: 气候变化与战略
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作者单位: School of Natural and Environmental Sciences, Newcastle Univ., Newcastle, United Kingdom
Recommended Citation:
Redfern C.P.F.,Bevan R.M.. Use of sea ice by arctic terns Sterna paradisaea in Antarctica and impacts of climate change[J]. Journal of Avian Biology,2020-01-01,51(2)