Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales

The pampas deer (Ozotoceros bezoarticus) is native to South America and is endangered in Argentina. In Buenos Aires province, Argentina, the last population of pampas deer is harbored in the Bahía Samborombón Wildlife Refuge (BSWR), which includes protected areas and numerous cattle ranches. This po...

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Autores principales: Carusi, L.C.P., Beade, M.S., Bilenca, D.N.
Formato: JOUR
Materias:
Conservation
Introduced ungulates
Livestock
Ozotoceros bezoarticus
abundance
comparative study
conservation
deer
endangered species
feral organism
interspecific interaction
introduced species
invasive species
livestock
pig
population decline
protected area
spatial analysis
spatial distribution
ungulate
Argentina
Buenos Aires [Argentina]
Bos
Cervidae
Suidae
Ungulata
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222372_v98_n3_p761_Carusi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00222372_v98_n3_p761_Carusi
record_format dspace
spelling todo:paper_00222372_v98_n3_p761_Carusi2023-10-03T14:28:53Z Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales Carusi, L.C.P. Beade, M.S. Bilenca, D.N. Conservation Introduced ungulates Livestock Ozotoceros bezoarticus abundance comparative study conservation deer endangered species feral organism interspecific interaction introduced species invasive species livestock pig population decline protected area spatial analysis spatial distribution ungulate Argentina Buenos Aires [Argentina] Bos Cervidae Ozotoceros bezoarticus Suidae Ungulata The pampas deer (Ozotoceros bezoarticus) is native to South America and is endangered in Argentina. In Buenos Aires province, Argentina, the last population of pampas deer is harbored in the Bahía Samborombón Wildlife Refuge (BSWR), which includes protected areas and numerous cattle ranches. This population has been declining and changing progressively in its distribution since 1985, and negative interactions between pampas deer and introduced ungulates (livestock and feral pigs) have been proposed among the main causes of its decline. We examined the abundance, distribution, and interactions among pampas deer, cattle, and feral pigs at site and landscape scales in the BSWR. At the site scale, coexistence between pampas deer and cattle at the same paddock was only possible at moderate stocking rates (0.2-0.4 AU/ha), and no deer were recorded at paddocks when stocking rates were above 0.6 AU/ha. Pampas deer and feral pigs co-occurred more frequently, but deer switched their behavior and increased levels of surveillance in response to proximity of feral pigs. At the landscape scale, a clear spatial segregation and differential distribution was detected among pampas deer, cattle, and feral pigs along the BSWR. Our results suggest that the current distribution of pampas deer at the study area is a consequence of avoiding contact with both livestock and feral pigs at the site scale. Thus, negative interactions recorded between pampas deer and introduced ungulates at the site scale were expressed at the landscape scale. Both in situ and ex situ conservation efforts are urgently needed to conserve pampas deer. © 2017 American Society of Mammalogists,. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00222372_v98_n3_p761_Carusi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Conservation
Introduced ungulates
Livestock
Ozotoceros bezoarticus
abundance
comparative study
conservation
deer
endangered species
feral organism
interspecific interaction
introduced species
invasive species
livestock
pig
population decline
protected area
spatial analysis
spatial distribution
ungulate
Argentina
Buenos Aires [Argentina]
Bos
Cervidae
Ozotoceros bezoarticus
Suidae
Ungulata
spellingShingle Conservation
Introduced ungulates
Livestock
Ozotoceros bezoarticus
abundance
comparative study
conservation
deer
endangered species
feral organism
interspecific interaction
introduced species
invasive species
livestock
pig
population decline
protected area
spatial analysis
spatial distribution
ungulate
Argentina
Buenos Aires [Argentina]
Bos
Cervidae
Ozotoceros bezoarticus
Suidae
Ungulata
Carusi, L.C.P.
Beade, M.S.
Bilenca, D.N.
Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales
topic_facet Conservation
Introduced ungulates
Livestock
Ozotoceros bezoarticus
abundance
comparative study
conservation
deer
endangered species
feral organism
interspecific interaction
introduced species
invasive species
livestock
pig
population decline
protected area
spatial analysis
spatial distribution
ungulate
Argentina
Buenos Aires [Argentina]
Bos
Cervidae
Ozotoceros bezoarticus
Suidae
Ungulata
description The pampas deer (Ozotoceros bezoarticus) is native to South America and is endangered in Argentina. In Buenos Aires province, Argentina, the last population of pampas deer is harbored in the Bahía Samborombón Wildlife Refuge (BSWR), which includes protected areas and numerous cattle ranches. This population has been declining and changing progressively in its distribution since 1985, and negative interactions between pampas deer and introduced ungulates (livestock and feral pigs) have been proposed among the main causes of its decline. We examined the abundance, distribution, and interactions among pampas deer, cattle, and feral pigs at site and landscape scales in the BSWR. At the site scale, coexistence between pampas deer and cattle at the same paddock was only possible at moderate stocking rates (0.2-0.4 AU/ha), and no deer were recorded at paddocks when stocking rates were above 0.6 AU/ha. Pampas deer and feral pigs co-occurred more frequently, but deer switched their behavior and increased levels of surveillance in response to proximity of feral pigs. At the landscape scale, a clear spatial segregation and differential distribution was detected among pampas deer, cattle, and feral pigs along the BSWR. Our results suggest that the current distribution of pampas deer at the study area is a consequence of avoiding contact with both livestock and feral pigs at the site scale. Thus, negative interactions recorded between pampas deer and introduced ungulates at the site scale were expressed at the landscape scale. Both in situ and ex situ conservation efforts are urgently needed to conserve pampas deer. © 2017 American Society of Mammalogists,.
format JOUR
author Carusi, L.C.P.
Beade, M.S.
Bilenca, D.N.
author_facet Carusi, L.C.P.
Beade, M.S.
Bilenca, D.N.
author_sort Carusi, L.C.P.
title Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales
title_short Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales
title_full Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales
title_fullStr Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales
title_full_unstemmed Spatial segregation among pampas deer and exotic ungulates: A comparative analysis at site and landscape scales
title_sort spatial segregation among pampas deer and exotic ungulates: a comparative analysis at site and landscape scales
url http://hdl.handle.net/20.500.12110/paper_00222372_v98_n3_p761_Carusi
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AT beadems spatialsegregationamongpampasdeerandexoticungulatesacomparativeanalysisatsiteandlandscapescales
AT bilencadn spatialsegregationamongpampasdeerandexoticungulatesacomparativeanalysisatsiteandlandscapescales
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