The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags
We used time-at-depth recorders and radio transmitters to measure dive parameters for European Shags (Phalacrocorax aristotelis). An algorithm for partitioning time-at-depth profiles, obtained from individuals making U-shaped, flat-bottomed dives, into foraging time and travel time is presented, and...
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/the-use-of-timeatdepth-recorders-for-estimating-depth-utilization-and-diving-performance-of-european-shags(9d232753-9e67-435b-be78-76f46c0b40ea).html http://www.scopus.com/inward/record.url?scp=0031286169&partnerID=8YFLogxK |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/9d232753-9e67-435b-be78-76f46c0b40ea 2024-06-23T07:52:58+00:00 The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags Wanless, S Harris, MP Burger, AE Buckland, Stephen Terrence 1997 https://research-portal.st-andrews.ac.uk/en/researchoutput/the-use-of-timeatdepth-recorders-for-estimating-depth-utilization-and-diving-performance-of-european-shags(9d232753-9e67-435b-be78-76f46c0b40ea).html http://www.scopus.com/inward/record.url?scp=0031286169&partnerID=8YFLogxK eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/the-use-of-timeatdepth-recorders-for-estimating-depth-utilization-and-diving-performance-of-european-shags(9d232753-9e67-435b-be78-76f46c0b40ea).html info:eu-repo/semantics/restrictedAccess Wanless , S , Harris , MP , Burger , AE & Buckland , S T 1997 , ' The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags ' , Journal of Field Ornithology , vol. 68 , pp. 547-561 . PHALACROCORAX-ARISTOTELIS FORAGING BEHAVIOR BRITISH-COLUMBIA GENTOO PENGUIN MARINE ANIMALS CORMORANTS DIET PATTERNS ISLAND ECOLOGY article 1997 ftunstandrewcris 2024-06-13T00:10:12Z We used time-at-depth recorders and radio transmitters to measure dive parameters for European Shags (Phalacrocorax aristotelis). An algorithm for partitioning time-at-depth profiles, obtained from individuals making U-shaped, flat-bottomed dives, into foraging time and travel time is presented, and a Fortran program to run the algorithm is provided. The deepest dive recorded was 61 m, but foraging depth parameters varied considerably between colonies and years. On average, European shags spent 47.6% of their underwater time foraging. The duration of each stage of the dive cycle was a function of water depth. The observed trends were qualitatively similar to predictions of optimality models for air-breathing animals that feed underwater, but more data from individuals foraging at depths approaching the physiological maximum for the species are needed. Article in Journal/Newspaper Gentoo penguin University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
PHALACROCORAX-ARISTOTELIS FORAGING BEHAVIOR BRITISH-COLUMBIA GENTOO PENGUIN MARINE ANIMALS CORMORANTS DIET PATTERNS ISLAND ECOLOGY |
spellingShingle |
PHALACROCORAX-ARISTOTELIS FORAGING BEHAVIOR BRITISH-COLUMBIA GENTOO PENGUIN MARINE ANIMALS CORMORANTS DIET PATTERNS ISLAND ECOLOGY Wanless, S Harris, MP Burger, AE Buckland, Stephen Terrence The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags |
topic_facet |
PHALACROCORAX-ARISTOTELIS FORAGING BEHAVIOR BRITISH-COLUMBIA GENTOO PENGUIN MARINE ANIMALS CORMORANTS DIET PATTERNS ISLAND ECOLOGY |
description |
We used time-at-depth recorders and radio transmitters to measure dive parameters for European Shags (Phalacrocorax aristotelis). An algorithm for partitioning time-at-depth profiles, obtained from individuals making U-shaped, flat-bottomed dives, into foraging time and travel time is presented, and a Fortran program to run the algorithm is provided. The deepest dive recorded was 61 m, but foraging depth parameters varied considerably between colonies and years. On average, European shags spent 47.6% of their underwater time foraging. The duration of each stage of the dive cycle was a function of water depth. The observed trends were qualitatively similar to predictions of optimality models for air-breathing animals that feed underwater, but more data from individuals foraging at depths approaching the physiological maximum for the species are needed. |
format |
Article in Journal/Newspaper |
author |
Wanless, S Harris, MP Burger, AE Buckland, Stephen Terrence |
author_facet |
Wanless, S Harris, MP Burger, AE Buckland, Stephen Terrence |
author_sort |
Wanless, S |
title |
The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags |
title_short |
The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags |
title_full |
The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags |
title_fullStr |
The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags |
title_full_unstemmed |
The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags |
title_sort |
use of time-at-depth recorders for estimating depth utilization and diving performance of european shags |
publishDate |
1997 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-use-of-timeatdepth-recorders-for-estimating-depth-utilization-and-diving-performance-of-european-shags(9d232753-9e67-435b-be78-76f46c0b40ea).html http://www.scopus.com/inward/record.url?scp=0031286169&partnerID=8YFLogxK |
genre |
Gentoo penguin |
genre_facet |
Gentoo penguin |
op_source |
Wanless , S , Harris , MP , Burger , AE & Buckland , S T 1997 , ' The use of time-at-depth recorders for estimating depth utilization and diving performance of European shags ' , Journal of Field Ornithology , vol. 68 , pp. 547-561 . |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-use-of-timeatdepth-recorders-for-estimating-depth-utilization-and-diving-performance-of-european-shags(9d232753-9e67-435b-be78-76f46c0b40ea).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1802644433549656064 |