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dc.contributor.author
Reus, Maria Laura
dc.contributor.author
Peco,Begoña
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dc.contributor.author
de Los Ríos, C.
dc.contributor.author
Giannoni, Stella Maris
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dc.contributor.author
Campos, Claudia Monica
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dc.date.available
2015-11-10T14:17:45Z
dc.date.issued
2013-04
dc.identifier.citation
Reus, Maria Laura; Peco,Begoña; de Los Ríos, C.; Giannoni, Stella Maris; Campos, Claudia Monica; Trophic interactions between two medium-sized mammals: the case of the native Dolichotis patagonum and the exotic Lepus europaeus in a hyper-arid ecosystem.; Polish Acad Sciences; Acta Theriologica; 58; 2; 4-2013; 205-214
dc.identifier.issn
0001-7051
dc.identifier.uri
http://hdl.handle.net/11336/2720
dc.description.abstract
As medium-sized herbivores, the exotic Lepus europaeus (European hare) and the native Dolichotis patagonum (mara) have been considered ecological equivalents. These species coexist in Ischigualasto Provincial Park, a hyperarid ecosystem with scarce food resources. Our objective was to evaluate diet composition, relationship between diets and food availability, and trophic relationships between both herbivores. Collection of feces and vegetation sampling were made in the Mesquite woodland community. Diet composition was analyzed by microhistological analysis of feces. In both seasons, shrub species represented the most abundant cover type in the area, and annual forbs and grasses appeared in the wet season. Herbivores showed similar dietary ecology: shrubs were the main food items along the year, showing a higher plasticity compared to their diets in other ecosystems, where they selected mostly grasses. The mara selected shrubs such as Atriplex sp. and Prosopis torquata, whereas the European hare selected Cyclolepis genistoides, Atriplex sp., and Bulnesia retama. During the wet season, both herbivores supplemented their diets with grasses and annual forbs. In the dry season, there was increased consumption of cacti, such as Tephrocactus sp. The mara and the European hare are likely close ecological equivalents, in terms of dietary similarity, and they showed strong dietary overlap across the dry season (over 60 %). Thus, we can assume the existence of a potential trophic competition between mara and European hare, especially during the season when food resources are scarce. These results can be important for the management of drylands in South America, where populations of threatened herbivorous species, such as the mara, coexist with exotic animals, sharing spatial and trophic resources even in protected areas.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Polish Acad Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Diet Overlap
dc.subject
Diversity
dc.subject
European Hare
dc.subject
Mara
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Trophic interactions between two medium-sized mammals: the case of the native Dolichotis patagonum and the exotic Lepus europaeus in a hyper-arid ecosystem.
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
58
dc.journal.number
2
dc.journal.pagination
205-214
dc.journal.pais
Polonia
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dc.journal.ciudad
Bialowieza
dc.description.fil
Fil: Reus, Maria Laura. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Departamento de Biologia; Argentina
dc.description.fil
Fil: Peco,Begoña. Universidad Autonoma de Madrid; España
dc.description.fil
Fil: de Los Ríos, C.. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Departamento de Biologia; Argentina
dc.description.fil
Fil: Giannoni, Stella Maris. Universidad Nacional de San Juan; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; Argentina
dc.description.fil
Fil: Campos, Claudia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza. Instituto Argentino de Investigaciones de Zonas Aridas; Argentina
dc.journal.title
Acta Theriologica
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.springerlink.com/content/w450655693317624/
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s13364-012-0110-0
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