Wader Population Censuses in the Arctic: Getting the Timing Right
ABSTRACT. There is increasing evidence that breeding wader censuses often have significantly underestimated densities in the Arctic and other areas. This evidence includes the recording of many more red knots Calidris canutus in the West Palearctic and African wintering areas than can be accounted f...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.529.2526 2023-05-15T14:19:46+02:00 Wader Population Censuses in the Arctic: Getting the Timing Right Hans Meltofte The Pennsylvania State University CiteSeerX Archives 2001 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.529.2526 http://pubs.aina.ucalgary.ca/arctic/Arctic54-4-367.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.529.2526 http://pubs.aina.ucalgary.ca/arctic/Arctic54-4-367.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic54-4-367.pdf Key words behaviour breeding phenology census methodologies eastern Canadian Arctic Northeast Greenland population densities population sizes shorebirds waders Zackenberg text 2001 ftciteseerx 2016-01-08T10:29:40Z ABSTRACT. There is increasing evidence that breeding wader censuses often have significantly underestimated densities in the Arctic and other areas. This evidence includes the recording of many more red knots Calidris canutus in the West Palearctic and African wintering areas than can be accounted for on the Arctic breeding grounds. The main causes of underestimated breeding numbers are that many species behave very inconspicuously during incubation, when most censuses have been performed, and that censuses taken later, during the chick-rearing period, record only successful breeding attempts. Records of four seasons at Zackenberg in central Northeast Greenland suggest that in the Arctic, the best population density data are obtained by mapping pairs and territorial individuals during the pair formation, territory establishment, and egg-laying periods, that is, when all birds are present and easiest to record. Revised summer population estimates for Old World wintering Nearctic waders are 20–200% higher than previous estimates. Text Arctic Arctic Calidris canutus Greenland Zackenberg Unknown Arctic Greenland |
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ftciteseerx |
language |
English |
topic |
Key words behaviour breeding phenology census methodologies eastern Canadian Arctic Northeast Greenland population densities population sizes shorebirds waders Zackenberg |
spellingShingle |
Key words behaviour breeding phenology census methodologies eastern Canadian Arctic Northeast Greenland population densities population sizes shorebirds waders Zackenberg Hans Meltofte Wader Population Censuses in the Arctic: Getting the Timing Right |
topic_facet |
Key words behaviour breeding phenology census methodologies eastern Canadian Arctic Northeast Greenland population densities population sizes shorebirds waders Zackenberg |
description |
ABSTRACT. There is increasing evidence that breeding wader censuses often have significantly underestimated densities in the Arctic and other areas. This evidence includes the recording of many more red knots Calidris canutus in the West Palearctic and African wintering areas than can be accounted for on the Arctic breeding grounds. The main causes of underestimated breeding numbers are that many species behave very inconspicuously during incubation, when most censuses have been performed, and that censuses taken later, during the chick-rearing period, record only successful breeding attempts. Records of four seasons at Zackenberg in central Northeast Greenland suggest that in the Arctic, the best population density data are obtained by mapping pairs and territorial individuals during the pair formation, territory establishment, and egg-laying periods, that is, when all birds are present and easiest to record. Revised summer population estimates for Old World wintering Nearctic waders are 20–200% higher than previous estimates. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Hans Meltofte |
author_facet |
Hans Meltofte |
author_sort |
Hans Meltofte |
title |
Wader Population Censuses in the Arctic: Getting the Timing Right |
title_short |
Wader Population Censuses in the Arctic: Getting the Timing Right |
title_full |
Wader Population Censuses in the Arctic: Getting the Timing Right |
title_fullStr |
Wader Population Censuses in the Arctic: Getting the Timing Right |
title_full_unstemmed |
Wader Population Censuses in the Arctic: Getting the Timing Right |
title_sort |
wader population censuses in the arctic: getting the timing right |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.529.2526 http://pubs.aina.ucalgary.ca/arctic/Arctic54-4-367.pdf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Calidris canutus Greenland Zackenberg |
genre_facet |
Arctic Arctic Calidris canutus Greenland Zackenberg |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic54-4-367.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.529.2526 http://pubs.aina.ucalgary.ca/arctic/Arctic54-4-367.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766291499491786752 |