Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus)
We know little regarding how specific aspects of habitat influence spatial variation in site occupancy by Arctic wildlife, yet this information is fundamental to effective conservation. To address this information gap, we assessed occupancy of 84 Gyrfalcon (Falco rusticolus Linnaeus, 1758) breeding...
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Online Access: | https://doi.org/10.1139/as-2018-0024 https://doaj.org/article/f080173353704f779f37c86ce4c14893 |
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ftdoajarticles:oai:doaj.org/article:f080173353704f779f37c86ce4c14893 2023-05-15T14:23:38+02:00 Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) David L. Anderson Peter J. Bente Travis L. Booms Leah Dunn Christopher J.W. McClure 2019-09-01T00:00:00Z https://doi.org/10.1139/as-2018-0024 https://doaj.org/article/f080173353704f779f37c86ce4c14893 EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2018-0024 https://doaj.org/toc/2368-7460 doi:10.1139/as-2018-0024 2368-7460 https://doaj.org/article/f080173353704f779f37c86ce4c14893 Arctic Science, Vol 5, Iss 3, Pp 148-160 (2019) arctic raptor falco rusticolus habitat quality occupancy dynamics population regulation Environmental sciences GE1-350 Environmental engineering TA170-171 article 2019 ftdoajarticles https://doi.org/10.1139/as-2018-0024 2022-12-31T09:42:02Z We know little regarding how specific aspects of habitat influence spatial variation in site occupancy by Arctic wildlife, yet this information is fundamental to effective conservation. To address this information gap, we assessed occupancy of 84 Gyrfalcon (Falco rusticolus Linnaeus, 1758) breeding territories observed annually between 2004 and 2013 in western Alaska. In line with the theory of population regulation by site dependence, we asked whether Gyrfalcons exhibited a nonrandom pattern of site selection and if heterogeneous landscape attributes correlated with observed occupancy patterns. We characterized high- and low-occupancy breeding territories as those occupied more or less often than expected by chance, and we evaluated land cover at 1 and 15 km circles centered around nesting territories to identify habitat variables associated with observed occupancy patterns. We tested 15 competing models to rank hypotheses reflecting prey and habitat variables important to nesting Gyrfalcons. We confirmed a nonrandom pattern of site selection but found only weak evidence that the distribution of prey habitat was responsible for this pattern. We reason that preferential habitat use by nesting Gyrfalcons may be determined by spatial scales other than those we measured or may be driven by landscape-level attributes at time periods other than during the brood rearing period. Article in Journal/Newspaper Arctic Arctic Falco rusticolus gyrfalcon Alaska Directory of Open Access Journals: DOAJ Articles Arctic Arctic Science 5 3 148 160 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
arctic raptor falco rusticolus habitat quality occupancy dynamics population regulation Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
arctic raptor falco rusticolus habitat quality occupancy dynamics population regulation Environmental sciences GE1-350 Environmental engineering TA170-171 David L. Anderson Peter J. Bente Travis L. Booms Leah Dunn Christopher J.W. McClure Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) |
topic_facet |
arctic raptor falco rusticolus habitat quality occupancy dynamics population regulation Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
We know little regarding how specific aspects of habitat influence spatial variation in site occupancy by Arctic wildlife, yet this information is fundamental to effective conservation. To address this information gap, we assessed occupancy of 84 Gyrfalcon (Falco rusticolus Linnaeus, 1758) breeding territories observed annually between 2004 and 2013 in western Alaska. In line with the theory of population regulation by site dependence, we asked whether Gyrfalcons exhibited a nonrandom pattern of site selection and if heterogeneous landscape attributes correlated with observed occupancy patterns. We characterized high- and low-occupancy breeding territories as those occupied more or less often than expected by chance, and we evaluated land cover at 1 and 15 km circles centered around nesting territories to identify habitat variables associated with observed occupancy patterns. We tested 15 competing models to rank hypotheses reflecting prey and habitat variables important to nesting Gyrfalcons. We confirmed a nonrandom pattern of site selection but found only weak evidence that the distribution of prey habitat was responsible for this pattern. We reason that preferential habitat use by nesting Gyrfalcons may be determined by spatial scales other than those we measured or may be driven by landscape-level attributes at time periods other than during the brood rearing period. |
format |
Article in Journal/Newspaper |
author |
David L. Anderson Peter J. Bente Travis L. Booms Leah Dunn Christopher J.W. McClure |
author_facet |
David L. Anderson Peter J. Bente Travis L. Booms Leah Dunn Christopher J.W. McClure |
author_sort |
David L. Anderson |
title |
Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) |
title_short |
Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) |
title_full |
Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) |
title_fullStr |
Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) |
title_full_unstemmed |
Nonrandom territory occupancy by nesting Gyrfalcons (Falco rusticolus) |
title_sort |
nonrandom territory occupancy by nesting gyrfalcons (falco rusticolus) |
publisher |
Canadian Science Publishing |
publishDate |
2019 |
url |
https://doi.org/10.1139/as-2018-0024 https://doaj.org/article/f080173353704f779f37c86ce4c14893 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Falco rusticolus gyrfalcon Alaska |
genre_facet |
Arctic Arctic Falco rusticolus gyrfalcon Alaska |
op_source |
Arctic Science, Vol 5, Iss 3, Pp 148-160 (2019) |
op_relation |
https://doi.org/10.1139/as-2018-0024 https://doaj.org/toc/2368-7460 doi:10.1139/as-2018-0024 2368-7460 https://doaj.org/article/f080173353704f779f37c86ce4c14893 |
op_doi |
https://doi.org/10.1139/as-2018-0024 |
container_title |
Arctic Science |
container_volume |
5 |
container_issue |
3 |
container_start_page |
148 |
op_container_end_page |
160 |
_version_ |
1766296128534347776 |