Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352
Abstract. In long-lived raptors, research suggests that some nest areas consistently fledge more young than others, with the majority of young in the population being produced by a few females. If this claim were true for Northern Goshawk (Accipiter gentilis) populations, it would benefit land manag...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1038.5024 2023-05-15T13:00:41+02:00 Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 Erica L Mcclaren Patricia L Kennedy Sarah R Dewey The Pennsylvania State University CiteSeerX Archives 2002 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1038.5024 http://www.globalraptors.org/grin/researchers/uploads/531/ng-mcclaren02.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1038.5024 http://www.globalraptors.org/grin/researchers/uploads/531/ng-mcclaren02.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.globalraptors.org/grin/researchers/uploads/531/ng-mcclaren02.pdf text 2002 ftciteseerx 2020-03-08T01:19:07Z Abstract. In long-lived raptors, research suggests that some nest areas consistently fledge more young than others, with the majority of young in the population being produced by a few females. If this claim were true for Northern Goshawk (Accipiter gentilis) populations, it would benefit land managers to identify high-quality goshawk breeding habitat. We examined whether the number of young fledged varied spatially among Northern Goshawk nest areas within three study areas where long-term reproductive data from goshawks were available: (1) Vancouver Island, British Columbia; (2) Jemez Mountains, New Mexico; and (3) Uinta Mountains, Utah. A mixed-model ANOVA indicated there was minimal spatial variation in nest productivity among nest areas within the three study locations. Rather, nest areas exhibited high temporal variability in nest productivity within each study area. These results suggest that temporal patterns such as local weather and fluctuating prey populations influenced Northern Goshawk reproduction more than spatial patterns such as habitat characteristics. Nest productivity may inadequately reflect spatial patterns in goshawk reproduction and so it would be premature to assume that habitat quality for Northern Goshawks was equal among nest areas within these study areas. Future research should examine spatial variability among nest areas in adult and juvenile survival rates to gain a complete picture of population responses to habitat change. Text Accipiter gentilis Northern Goshawk Unknown |
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ftciteseerx |
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English |
description |
Abstract. In long-lived raptors, research suggests that some nest areas consistently fledge more young than others, with the majority of young in the population being produced by a few females. If this claim were true for Northern Goshawk (Accipiter gentilis) populations, it would benefit land managers to identify high-quality goshawk breeding habitat. We examined whether the number of young fledged varied spatially among Northern Goshawk nest areas within three study areas where long-term reproductive data from goshawks were available: (1) Vancouver Island, British Columbia; (2) Jemez Mountains, New Mexico; and (3) Uinta Mountains, Utah. A mixed-model ANOVA indicated there was minimal spatial variation in nest productivity among nest areas within the three study locations. Rather, nest areas exhibited high temporal variability in nest productivity within each study area. These results suggest that temporal patterns such as local weather and fluctuating prey populations influenced Northern Goshawk reproduction more than spatial patterns such as habitat characteristics. Nest productivity may inadequately reflect spatial patterns in goshawk reproduction and so it would be premature to assume that habitat quality for Northern Goshawks was equal among nest areas within these study areas. Future research should examine spatial variability among nest areas in adult and juvenile survival rates to gain a complete picture of population responses to habitat change. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Erica L Mcclaren Patricia L Kennedy Sarah R Dewey |
spellingShingle |
Erica L Mcclaren Patricia L Kennedy Sarah R Dewey Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 |
author_facet |
Erica L Mcclaren Patricia L Kennedy Sarah R Dewey |
author_sort |
Erica L Mcclaren |
title |
Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 |
title_short |
Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 |
title_full |
Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 |
title_fullStr |
Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 |
title_full_unstemmed |
Do some Northern Goshawk nest areas consistently fledge more young than others? Condor 104:343–352 |
title_sort |
do some northern goshawk nest areas consistently fledge more young than others? condor 104:343–352 |
publishDate |
2002 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1038.5024 http://www.globalraptors.org/grin/researchers/uploads/531/ng-mcclaren02.pdf |
genre |
Accipiter gentilis Northern Goshawk |
genre_facet |
Accipiter gentilis Northern Goshawk |
op_source |
http://www.globalraptors.org/grin/researchers/uploads/531/ng-mcclaren02.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1038.5024 http://www.globalraptors.org/grin/researchers/uploads/531/ng-mcclaren02.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766257694838095872 |