Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America
Abstract: In Alberta, Canada (1982–2001), and in Idaho, Montana, and Wyoming, United States (1987–2001), wolves ( Canis lupus ) killed various domestic animals, among which the major prey were sheep in the United States (68%, n = 494 ) and cattle in Canada (95%; n = 1633 ). Under recovery programs,...
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Online Access: | http://dx.doi.org/10.1111/j.1523-1739.2003.00063.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1523-1739.2003.00063.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1523-1739.2003.00063.x/fullpdf |
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crwiley:10.1111/j.1523-1739.2003.00063.x 2024-09-15T18:01:27+00:00 Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America MUSIANI, MARCO MAMO, CHARLES BOITANI, LUIGI CALLAGHAN, CAROLYN GATES, C. CORMACK MATTEI, LIVIA VISALBERGHI, ELISABETTA BRECK, STEWART VOLPI, GIULIA 2003 http://dx.doi.org/10.1111/j.1523-1739.2003.00063.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1523-1739.2003.00063.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1523-1739.2003.00063.x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Conservation Biology volume 17, issue 6, page 1538-1547 ISSN 0888-8892 1523-1739 journal-article 2003 crwiley https://doi.org/10.1111/j.1523-1739.2003.00063.x 2024-07-18T04:22:43Z Abstract: In Alberta, Canada (1982–2001), and in Idaho, Montana, and Wyoming, United States (1987–2001), wolves ( Canis lupus ) killed various domestic animals, among which the major prey were sheep in the United States (68%, n = 494 ) and cattle in Canada (95%; n = 1633 ). Under recovery programs, the wolf population increased in the United States, and depredation events increased proportionately. In both countries, the number of domestic animals killed each year was correlated with the number of wolves killed by government authorities for depredation management. We tested the ability of antiwolf barriers made of flags hanging from ropes to impede wolf access to food and livestock. In 18 experiments, barriers prevented captive wolves ( n = 9) from accessing food for up to 28 hours and allowed daily separation of wolves to administer contraceptive pills to a female wolf. Barriers prevented access by wild wolves to 100‐m 2 baited sites during two 60‐day tests. We also set barriers around three cattle pastures. In Alberta during two 60‐day trials on 25‐ha pastures, wolves approached barriers on 23 occasions but did not cross them, and no cattle were killed. Wolves killed cattle on neighboring ranches during the trials and before and after the trials on the tested ranches. In Idaho four radiocollared wolves crossed barriers and killed cattle in a 400‐ha ranch after 61 days of barrier exposure. Our results suggest that antiwolf barriers are effective in deterring captive and wild wolves for >1 and ≥60 days, respectively, and that wild wolves switch to alternative livestock when excluded from one herd of livestock. Our depredation data indicate that protecting livestock from wolves reduces the necessity for killing wolves. Barriers could play a role among the limited set of preventive measures available and offer a cost‐effective mitigation tool for the problem of livestock depredation on a local scale. Article in Journal/Newspaper Canis lupus Wiley Online Library Conservation Biology 17 6 1538 1547 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract: In Alberta, Canada (1982–2001), and in Idaho, Montana, and Wyoming, United States (1987–2001), wolves ( Canis lupus ) killed various domestic animals, among which the major prey were sheep in the United States (68%, n = 494 ) and cattle in Canada (95%; n = 1633 ). Under recovery programs, the wolf population increased in the United States, and depredation events increased proportionately. In both countries, the number of domestic animals killed each year was correlated with the number of wolves killed by government authorities for depredation management. We tested the ability of antiwolf barriers made of flags hanging from ropes to impede wolf access to food and livestock. In 18 experiments, barriers prevented captive wolves ( n = 9) from accessing food for up to 28 hours and allowed daily separation of wolves to administer contraceptive pills to a female wolf. Barriers prevented access by wild wolves to 100‐m 2 baited sites during two 60‐day tests. We also set barriers around three cattle pastures. In Alberta during two 60‐day trials on 25‐ha pastures, wolves approached barriers on 23 occasions but did not cross them, and no cattle were killed. Wolves killed cattle on neighboring ranches during the trials and before and after the trials on the tested ranches. In Idaho four radiocollared wolves crossed barriers and killed cattle in a 400‐ha ranch after 61 days of barrier exposure. Our results suggest that antiwolf barriers are effective in deterring captive and wild wolves for >1 and ≥60 days, respectively, and that wild wolves switch to alternative livestock when excluded from one herd of livestock. Our depredation data indicate that protecting livestock from wolves reduces the necessity for killing wolves. Barriers could play a role among the limited set of preventive measures available and offer a cost‐effective mitigation tool for the problem of livestock depredation on a local scale. |
format |
Article in Journal/Newspaper |
author |
MUSIANI, MARCO MAMO, CHARLES BOITANI, LUIGI CALLAGHAN, CAROLYN GATES, C. CORMACK MATTEI, LIVIA VISALBERGHI, ELISABETTA BRECK, STEWART VOLPI, GIULIA |
spellingShingle |
MUSIANI, MARCO MAMO, CHARLES BOITANI, LUIGI CALLAGHAN, CAROLYN GATES, C. CORMACK MATTEI, LIVIA VISALBERGHI, ELISABETTA BRECK, STEWART VOLPI, GIULIA Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America |
author_facet |
MUSIANI, MARCO MAMO, CHARLES BOITANI, LUIGI CALLAGHAN, CAROLYN GATES, C. CORMACK MATTEI, LIVIA VISALBERGHI, ELISABETTA BRECK, STEWART VOLPI, GIULIA |
author_sort |
MUSIANI, MARCO |
title |
Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America |
title_short |
Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America |
title_full |
Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America |
title_fullStr |
Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America |
title_full_unstemmed |
Wolf Depredation Trends and the Use of Fladry Barriers to Protect Livestock in Western North America |
title_sort |
wolf depredation trends and the use of fladry barriers to protect livestock in western north america |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1111/j.1523-1739.2003.00063.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1523-1739.2003.00063.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1523-1739.2003.00063.x/fullpdf |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_source |
Conservation Biology volume 17, issue 6, page 1538-1547 ISSN 0888-8892 1523-1739 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1523-1739.2003.00063.x |
container_title |
Conservation Biology |
container_volume |
17 |
container_issue |
6 |
container_start_page |
1538 |
op_container_end_page |
1547 |
_version_ |
1810438604906823680 |