Aspects of Common Eider Nesting Ecology in Labrador
The status, distribution, and nesting ecology of common eiders (Somateria mollissima) breeding in Labrador are not well known. This study is an initial effort to improve understanding of the nesting ecology of eiders on the Labrador coast, a zone of intergradation between the northern (S. m. boreali...
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Arctic Institute of North America
2005
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ftmemorialuniv:oai:research.library.mun.ca:433 2024-09-15T17:51:27+00:00 Aspects of Common Eider Nesting Ecology in Labrador Chaulk, Keith Robertson, Gregory J. Montevecchi, William A. Ryan, Pierre C. 2005-03 application/pdf https://research.library.mun.ca/433/ https://research.library.mun.ca/433/1/aspects_common_eider.pdf https://research.library.mun.ca/433/3/aspects_common_eider.pdf http://arctic.synergiesprairies.ca/arctic/index.php/arctic/article/view/383 en eng Arctic Institute of North America https://research.library.mun.ca/433/1/aspects_common_eider.pdf https://research.library.mun.ca/433/3/aspects_common_eider.pdf Chaulk, Keith <https://research.library.mun.ca/view/creator_az/Chaulk=3AKeith=3A=3A.html> and Robertson, Gregory J. <https://research.library.mun.ca/view/creator_az/Robertson=3AGregory_J=2E_=3A=3A.html> and Montevecchi, William A. <https://research.library.mun.ca/view/creator_az/Montevecchi=3AWilliam_A=2E_=3A=3A.html> and Ryan, Pierre C. <https://research.library.mun.ca/view/creator_az/Ryan=3APierre_C=2E=3A=3A.html> (2005) Aspects of Common Eider Nesting Ecology in Labrador. Arctic, 58 (1). pp. 10-15. ISSN 1923-1245 cc_by_nc G Geography (General) Q Science (General) Article PeerReviewed 2005 ftmemorialuniv 2024-07-10T03:16:00Z The status, distribution, and nesting ecology of common eiders (Somateria mollissima) breeding in Labrador are not well known. This study is an initial effort to improve understanding of the nesting ecology of eiders on the Labrador coast, a zone of intergradation between the northern (S. m. borealis) and American (S. m. dresseri) subspecies of common eider. During 1998 and 1999, 187 islands were surveyed for nesting eiders at four sites (from north to south: Nain, Hopedale, Makkovik, St. Peter’s Bay) along 750 km of the coast. Nest initiation dates (calculated by candling eggs) ranged over a four- to five-week period and were positively associated with latitude: the earliest mean initiation date (5 June) was in St. Peter’s Bay in the south and the latest (27 June) at Nain in the north. Mean clutch size ranged from 3.5 to 4.2 and varied by area and year; eiders nesting in Nain had the smallest clutches. In 1999, the highest nest density (49.8 nests/ha) was observed in Nain and the lowest (3.9 nests/ha) in Makkovik. In some cases, we used boat surveys to assess eider presence and absence and found it to be a reliable method; this search technique could be beneficial to researchers working in remote locations where operational costs are high. Article in Journal/Newspaper Arctic Common Eider Hopedale Makkovik Nain Somateria mollissima Memorial University of Newfoundland: Research Repository |
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Memorial University of Newfoundland: Research Repository |
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ftmemorialuniv |
language |
English |
topic |
G Geography (General) Q Science (General) |
spellingShingle |
G Geography (General) Q Science (General) Chaulk, Keith Robertson, Gregory J. Montevecchi, William A. Ryan, Pierre C. Aspects of Common Eider Nesting Ecology in Labrador |
topic_facet |
G Geography (General) Q Science (General) |
description |
The status, distribution, and nesting ecology of common eiders (Somateria mollissima) breeding in Labrador are not well known. This study is an initial effort to improve understanding of the nesting ecology of eiders on the Labrador coast, a zone of intergradation between the northern (S. m. borealis) and American (S. m. dresseri) subspecies of common eider. During 1998 and 1999, 187 islands were surveyed for nesting eiders at four sites (from north to south: Nain, Hopedale, Makkovik, St. Peter’s Bay) along 750 km of the coast. Nest initiation dates (calculated by candling eggs) ranged over a four- to five-week period and were positively associated with latitude: the earliest mean initiation date (5 June) was in St. Peter’s Bay in the south and the latest (27 June) at Nain in the north. Mean clutch size ranged from 3.5 to 4.2 and varied by area and year; eiders nesting in Nain had the smallest clutches. In 1999, the highest nest density (49.8 nests/ha) was observed in Nain and the lowest (3.9 nests/ha) in Makkovik. In some cases, we used boat surveys to assess eider presence and absence and found it to be a reliable method; this search technique could be beneficial to researchers working in remote locations where operational costs are high. |
format |
Article in Journal/Newspaper |
author |
Chaulk, Keith Robertson, Gregory J. Montevecchi, William A. Ryan, Pierre C. |
author_facet |
Chaulk, Keith Robertson, Gregory J. Montevecchi, William A. Ryan, Pierre C. |
author_sort |
Chaulk, Keith |
title |
Aspects of Common Eider Nesting Ecology in Labrador |
title_short |
Aspects of Common Eider Nesting Ecology in Labrador |
title_full |
Aspects of Common Eider Nesting Ecology in Labrador |
title_fullStr |
Aspects of Common Eider Nesting Ecology in Labrador |
title_full_unstemmed |
Aspects of Common Eider Nesting Ecology in Labrador |
title_sort |
aspects of common eider nesting ecology in labrador |
publisher |
Arctic Institute of North America |
publishDate |
2005 |
url |
https://research.library.mun.ca/433/ https://research.library.mun.ca/433/1/aspects_common_eider.pdf https://research.library.mun.ca/433/3/aspects_common_eider.pdf http://arctic.synergiesprairies.ca/arctic/index.php/arctic/article/view/383 |
genre |
Arctic Common Eider Hopedale Makkovik Nain Somateria mollissima |
genre_facet |
Arctic Common Eider Hopedale Makkovik Nain Somateria mollissima |
op_relation |
https://research.library.mun.ca/433/1/aspects_common_eider.pdf https://research.library.mun.ca/433/3/aspects_common_eider.pdf Chaulk, Keith <https://research.library.mun.ca/view/creator_az/Chaulk=3AKeith=3A=3A.html> and Robertson, Gregory J. <https://research.library.mun.ca/view/creator_az/Robertson=3AGregory_J=2E_=3A=3A.html> and Montevecchi, William A. <https://research.library.mun.ca/view/creator_az/Montevecchi=3AWilliam_A=2E_=3A=3A.html> and Ryan, Pierre C. <https://research.library.mun.ca/view/creator_az/Ryan=3APierre_C=2E=3A=3A.html> (2005) Aspects of Common Eider Nesting Ecology in Labrador. Arctic, 58 (1). pp. 10-15. ISSN 1923-1245 |
op_rights |
cc_by_nc |
_version_ |
1810293354612654080 |