Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival
The most common invasive mammals—mice, rats, and cats—have been introduced to islands around the world, where they continue to negatively affect native biodiversity. The eradication of those invasive mammals has had positive effects on many species of seabirds. However, the removal of one invasive mammal species may result in abundance changes of other species due to trophic and competitive interactions among species. Understanding the overall impact of several invasive species is a key challenge when evaluating the possible effects of eradication programmes. Here we assess the influence of the three most common invasive mammals on nest survival of Cory’s shearwater (Calonectris diomedea). We monitored six breeding colonies over 3 years and measured the activity of mice, rats and cats to examine the influence of invasive mammals on nest survival. We found that nest survival showed a similar temporal trend in all years, with lowest weekly survival probabilities shortly after chicks hatched. Cats were identified as major predators of chicks, but no measure of colony-specific cat activity was able to adequately explain variation in shearwater nest survival. Nest survival was on average 0.38 (95 % confidence interval 0.20–0.53) and varied among colonies as well as over time. We found a small positive influence of rats on nest survival, which may indicate that the presence of small rodents as alternative prey may reduce cat predation of chicks. Our findings suggest that the eradication of rodents alone may exacerbate the adverse effects of cats on shearwater nest survival.
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Format: | artículo biblioteca |
Language: | English |
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Kluwer Academic Publishers
2013-01
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Subjects: | Macaronesian Islands, Rats, Procellariiformes, Feral Cats, Nest Survival, Interaction Among Predators, |
Online Access: | http://hdl.handle.net/10261/178995 http://dx.doi.org/10.13039/501100000780 |
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dig-ipna-es-10261-1789952020-12-09T16:45:46Z Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival Hervías-Parejo, Sandra Henriques, A. Oliveira, N. Pipa, T. Cowen,H Ramos, Jaime A. Geraldes, Pedro Silva, C. Ruiz de Ybáñez, María Rocío Oppel, S. Nogales, Manuel European Commission Macaronesian Islands Rats Procellariiformes Feral Cats Nest Survival Interaction Among Predators The most common invasive mammals—mice, rats, and cats—have been introduced to islands around the world, where they continue to negatively affect native biodiversity. The eradication of those invasive mammals has had positive effects on many species of seabirds. However, the removal of one invasive mammal species may result in abundance changes of other species due to trophic and competitive interactions among species. Understanding the overall impact of several invasive species is a key challenge when evaluating the possible effects of eradication programmes. Here we assess the influence of the three most common invasive mammals on nest survival of Cory’s shearwater (Calonectris diomedea). We monitored six breeding colonies over 3 years and measured the activity of mice, rats and cats to examine the influence of invasive mammals on nest survival. We found that nest survival showed a similar temporal trend in all years, with lowest weekly survival probabilities shortly after chicks hatched. Cats were identified as major predators of chicks, but no measure of colony-specific cat activity was able to adequately explain variation in shearwater nest survival. Nest survival was on average 0.38 (95 % confidence interval 0.20–0.53) and varied among colonies as well as over time. We found a small positive influence of rats on nest survival, which may indicate that the presence of small rodents as alternative prey may reduce cat predation of chicks. Our findings suggest that the eradication of rodents alone may exacerbate the adverse effects of cats on shearwater nest survival. This work was included in the project LIFE07 NAT/P/000649 ‘Safe Islands for Seabirds’, coordinated by the Portuguese Society for the Study of Birds and co-financed by the European Commission. Peer Reviewed 2019-04-01T08:48:05Z 2019-04-01T08:48:05Z 2013-01 2019-04-01T08:48:05Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1007/s10530-012-0274-1 issn: 1387-3547 e-issn: 1573-1464) Biological Invasions 15(1): 143-155 (2013) http://hdl.handle.net/10261/178995 10.1007/s10530-012-0274-1 http://dx.doi.org/10.13039/501100000780 en https://doi.org/10.1007/s10530-012-0274-1 Sí none Kluwer Academic Publishers |
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Macaronesian Islands Rats Procellariiformes Feral Cats Nest Survival Interaction Among Predators Macaronesian Islands Rats Procellariiformes Feral Cats Nest Survival Interaction Among Predators |
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Macaronesian Islands Rats Procellariiformes Feral Cats Nest Survival Interaction Among Predators Macaronesian Islands Rats Procellariiformes Feral Cats Nest Survival Interaction Among Predators Hervías-Parejo, Sandra Henriques, A. Oliveira, N. Pipa, T. Cowen,H Ramos, Jaime A. Geraldes, Pedro Silva, C. Ruiz de Ybáñez, María Rocío Oppel, S. Nogales, Manuel Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival |
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The most common invasive mammals—mice, rats, and cats—have been introduced to islands around the world, where they continue to negatively affect native biodiversity. The eradication of those invasive mammals has had positive effects on many species of seabirds. However, the removal of one invasive mammal species may result in abundance changes of other species due to trophic and competitive interactions among species. Understanding the overall impact of several invasive species is a key challenge when evaluating the possible effects of eradication programmes. Here we assess the influence of the three most common invasive mammals on nest survival of Cory’s shearwater (Calonectris diomedea). We monitored six breeding colonies over 3 years and measured the activity of mice, rats and cats to examine the influence of invasive mammals on nest survival. We found that nest survival showed a similar temporal trend in all years, with lowest weekly survival probabilities shortly after chicks hatched. Cats were identified as major predators of chicks, but no measure of colony-specific cat activity was able to adequately explain variation in shearwater nest survival. Nest survival was on average 0.38 (95 % confidence interval 0.20–0.53) and varied among colonies as well as over time. We found a small positive influence of rats on nest survival, which may indicate that the presence of small rodents as alternative prey may reduce cat predation of chicks. Our findings suggest that the eradication of rodents alone may exacerbate the adverse effects of cats on shearwater nest survival. |
author2 |
European Commission |
author_facet |
European Commission Hervías-Parejo, Sandra Henriques, A. Oliveira, N. Pipa, T. Cowen,H Ramos, Jaime A. Geraldes, Pedro Silva, C. Ruiz de Ybáñez, María Rocío Oppel, S. Nogales, Manuel |
format |
artículo |
topic_facet |
Macaronesian Islands Rats Procellariiformes Feral Cats Nest Survival Interaction Among Predators |
author |
Hervías-Parejo, Sandra Henriques, A. Oliveira, N. Pipa, T. Cowen,H Ramos, Jaime A. Geraldes, Pedro Silva, C. Ruiz de Ybáñez, María Rocío Oppel, S. Nogales, Manuel |
author_sort |
Hervías-Parejo, Sandra |
title |
Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival |
title_short |
Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival |
title_full |
Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival |
title_fullStr |
Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival |
title_full_unstemmed |
Studying the effects of multiple invasive mammals on Cory’s shearwater nest survival |
title_sort |
studying the effects of multiple invasive mammals on cory’s shearwater nest survival |
publisher |
Kluwer Academic Publishers |
publishDate |
2013-01 |
url |
http://hdl.handle.net/10261/178995 http://dx.doi.org/10.13039/501100000780 |
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