Breeding site characteristics and breeding success in Thick-billed Murres
Breeding site characteristics of Thick-billed Murres, Uria lomvia, differed significantly between Cape Hay, Bylot Island, and Coburg Island, N.W.T., Canada. Logistic regression analysis showed that at both colonies site characteristics had significant effects on breeding success. At Coburg Island th...
Published in: | Canadian Journal of Zoology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
1985
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/z85-279 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-279 |
id |
crcansciencepubl:10.1139/z85-279 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/z85-279 2023-12-17T10:28:25+01:00 Breeding site characteristics and breeding success in Thick-billed Murres Birkhead, T. R. Greene, E. Biggins, J. D. Nettleship, D. N. 1985 http://dx.doi.org/10.1139/z85-279 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-279 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 63, issue 8, page 1880-1884 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1985 crcansciencepubl https://doi.org/10.1139/z85-279 2023-11-19T13:38:39Z Breeding site characteristics of Thick-billed Murres, Uria lomvia, differed significantly between Cape Hay, Bylot Island, and Coburg Island, N.W.T., Canada. Logistic regression analysis showed that at both colonies site characteristics had significant effects on breeding success. At Coburg Island the slope and width of the ledge were the most important factors, whereas at Cape Hay the number of walls and neighbours, and to a lesser extent the width of the ledge, best explained the variation observed in breeding success. Egg and chick mortality factors differed at each colony. At Coburg Island most eggs were lost through accidentally rolling off ledges, and at this colony birds on level sites on broad ledges were most successful. At Cape Hay most mortality of eggs and chicks occurred as a result of rock- and ice-falls; sites offering some protection were the most productive. Comparisons are made with other studies, and the role of breeding site quality in population regulation is discussed. Article in Journal/Newspaper Bylot Island Coburg island Uria lomvia uria Canadian Science Publishing (via Crossref) Bylot Island Canada Coburg Island ENVELOPE(-79.338,-79.338,75.940,75.940) Canadian Journal of Zoology 63 8 1880 1884 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Birkhead, T. R. Greene, E. Biggins, J. D. Nettleship, D. N. Breeding site characteristics and breeding success in Thick-billed Murres |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Breeding site characteristics of Thick-billed Murres, Uria lomvia, differed significantly between Cape Hay, Bylot Island, and Coburg Island, N.W.T., Canada. Logistic regression analysis showed that at both colonies site characteristics had significant effects on breeding success. At Coburg Island the slope and width of the ledge were the most important factors, whereas at Cape Hay the number of walls and neighbours, and to a lesser extent the width of the ledge, best explained the variation observed in breeding success. Egg and chick mortality factors differed at each colony. At Coburg Island most eggs were lost through accidentally rolling off ledges, and at this colony birds on level sites on broad ledges were most successful. At Cape Hay most mortality of eggs and chicks occurred as a result of rock- and ice-falls; sites offering some protection were the most productive. Comparisons are made with other studies, and the role of breeding site quality in population regulation is discussed. |
format |
Article in Journal/Newspaper |
author |
Birkhead, T. R. Greene, E. Biggins, J. D. Nettleship, D. N. |
author_facet |
Birkhead, T. R. Greene, E. Biggins, J. D. Nettleship, D. N. |
author_sort |
Birkhead, T. R. |
title |
Breeding site characteristics and breeding success in Thick-billed Murres |
title_short |
Breeding site characteristics and breeding success in Thick-billed Murres |
title_full |
Breeding site characteristics and breeding success in Thick-billed Murres |
title_fullStr |
Breeding site characteristics and breeding success in Thick-billed Murres |
title_full_unstemmed |
Breeding site characteristics and breeding success in Thick-billed Murres |
title_sort |
breeding site characteristics and breeding success in thick-billed murres |
publisher |
Canadian Science Publishing |
publishDate |
1985 |
url |
http://dx.doi.org/10.1139/z85-279 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-279 |
long_lat |
ENVELOPE(-79.338,-79.338,75.940,75.940) |
geographic |
Bylot Island Canada Coburg Island |
geographic_facet |
Bylot Island Canada Coburg Island |
genre |
Bylot Island Coburg island Uria lomvia uria |
genre_facet |
Bylot Island Coburg island Uria lomvia uria |
op_source |
Canadian Journal of Zoology volume 63, issue 8, page 1880-1884 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z85-279 |
container_title |
Canadian Journal of Zoology |
container_volume |
63 |
container_issue |
8 |
container_start_page |
1880 |
op_container_end_page |
1884 |
_version_ |
1785580519882227712 |