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globalchange > 过去全球变化的重建

DOI:	10.1371/journal.pone.0103072
论文题名:	Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean
作者:	Julie M. Andersen; Garry B. Stenson; Mette Skern-Maurizen; Yolanda F. Wiersma; Aqqalu Rosing-Asvid; Mike O. Hammill; Lars Boehme
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-7-22
卷:	9, 期:7
语种:	英语
英文关键词:	Seals ; Buoyancy ; Lipids ; Foraging ; Animal sexual behavior ; Molting ; Animal migration ; Sea ice
英文摘要:	Many pinniped species perform a specific dive type, referred to as a ‘drift dive’, where they drift passively through the water column. This dive type has been suggested to function as a resting/sleeping or food processing dive, and can be used as an indication of feeding success by calculating the daily change in vertical drift rates over time, which reflects the relative fluctuations in buoyancy of the animal as the proportion of lipids in the body change. Northwest Atlantic hooded seals perform drift dives at regular intervals throughout their annual migration across the Northwest Atlantic Ocean. We found that the daily change in drift rate varied with geographic location and the time of year and that this differed between sexes. Positive changes in buoyancy (reflecting increased lipid stores) were evident throughout their migration range and although overlapping somewhat, they were not statistically associated with high use areas as indicated by First Passage Time (FPT). Differences in the seasonal fluctuations of buoyancy between males and females suggest that they experience a difference in patterns of energy gain and loss during winter and spring, associated with breeding. The fluctuations in buoyancy around the moulting period were similar between sexes.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0103072&type=printable
Citation statistics:
资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/19527
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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File Name/ File Size	Content Type	Version	Access	License
journal.pone.0103072.PDF（1206KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

Department of Biology, Memorial University of Newfoundland, St. John's, Canada;Science Branch, Department of Fisheries and Oceans, Northwest Atlantic Fisheries Centre, St. John's, Canada;Marine Mammal Research Department, Institute of Marine Research, Bergen, Norway;Department of Biology, Memorial University of Newfoundland, St. John's, Canada;Greenland Institute of Natural Resources, Nuuk, Greenland;Science Branch, Department of Fisheries and Oceans, Institute du Maurice Lamontang, Mont Joli, Quebec, Canada;Sea Mammal Research Unit, Scottish Oceans Institute, University of St. Andrews, St. Andrews, Fife, United Kingdom

Recommended Citation:

Julie M. Andersen,Garry B. Stenson,Mette Skern-Maurizen,et al. Drift Diving by Hooded Seals (Cystophora cristata) in the Northwest Atlantic Ocean[J]. PLOS ONE,2014-01-01,9(7)

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