Predatory responses of a raptor guild to changes in prey density
The responses of a guild of open-country birds of prey to changes in prey density were studied on a simple island habitat in southern Ontario. Numerical responses were conspicuous in all species, while functional responses were weak. Individual raptor species displayed characteristic responses, diff...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1978
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Online Access: | http://dx.doi.org/10.1139/z78-344 http://www.nrcresearchpress.com/doi/pdf/10.1139/z78-344 |
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crcansciencepubl:10.1139/z78-344 2023-12-17T10:26:08+01:00 Predatory responses of a raptor guild to changes in prey density Phelan, Frank J. S. Robertson, Raleigh J. 1978 http://dx.doi.org/10.1139/z78-344 http://www.nrcresearchpress.com/doi/pdf/10.1139/z78-344 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 56, issue 12, page 2565-2572 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1978 crcansciencepubl https://doi.org/10.1139/z78-344 2023-11-19T13:39:33Z The responses of a guild of open-country birds of prey to changes in prey density were studied on a simple island habitat in southern Ontario. Numerical responses were conspicuous in all species, while functional responses were weak. Individual raptor species displayed characteristic responses, differing from others in intensity and aspects of seasonality related to breeding versus wintering. Yet a basic similarity in the form of response for all species present at any one season, and a complementarity of responses of species present through the changing seasons, resulted in an overall guild level pattern of numerical and functional response of predators to changes in prey density. The synchronous fluctuations of predator and prey densities observed are similar to those of arctic areas and unusual for the temperate regions where the study was conducted. Characteristics of the predator and prey assemblages and features of the study site were important in determining the type, the intensity, and the level (species or guild) at which the responses were exhibited. Article in Journal/Newspaper Arctic Canadian Science Publishing (via Crossref) Arctic Canadian Journal of Zoology 56 12 2565 2572 |
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 Phelan, Frank J. S. Robertson, Raleigh J. Predatory responses of a raptor guild to changes in prey density |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The responses of a guild of open-country birds of prey to changes in prey density were studied on a simple island habitat in southern Ontario. Numerical responses were conspicuous in all species, while functional responses were weak. Individual raptor species displayed characteristic responses, differing from others in intensity and aspects of seasonality related to breeding versus wintering. Yet a basic similarity in the form of response for all species present at any one season, and a complementarity of responses of species present through the changing seasons, resulted in an overall guild level pattern of numerical and functional response of predators to changes in prey density. The synchronous fluctuations of predator and prey densities observed are similar to those of arctic areas and unusual for the temperate regions where the study was conducted. Characteristics of the predator and prey assemblages and features of the study site were important in determining the type, the intensity, and the level (species or guild) at which the responses were exhibited. |
format |
Article in Journal/Newspaper |
author |
Phelan, Frank J. S. Robertson, Raleigh J. |
author_facet |
Phelan, Frank J. S. Robertson, Raleigh J. |
author_sort |
Phelan, Frank J. S. |
title |
Predatory responses of a raptor guild to changes in prey density |
title_short |
Predatory responses of a raptor guild to changes in prey density |
title_full |
Predatory responses of a raptor guild to changes in prey density |
title_fullStr |
Predatory responses of a raptor guild to changes in prey density |
title_full_unstemmed |
Predatory responses of a raptor guild to changes in prey density |
title_sort |
predatory responses of a raptor guild to changes in prey density |
publisher |
Canadian Science Publishing |
publishDate |
1978 |
url |
http://dx.doi.org/10.1139/z78-344 http://www.nrcresearchpress.com/doi/pdf/10.1139/z78-344 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Canadian Journal of Zoology volume 56, issue 12, page 2565-2572 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z78-344 |
container_title |
Canadian Journal of Zoology |
container_volume |
56 |
container_issue |
12 |
container_start_page |
2565 |
op_container_end_page |
2572 |
_version_ |
1785577835264475136 |