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dc.contributor.author
Costan, Andrea Silvina
dc.contributor.author
Sarasola, José Hernán
dc.date.available
2023-01-11T16:31:34Z
dc.date.issued
2021-03
dc.identifier.citation
Costan, Andrea Silvina; Sarasola, José Hernán; Raptors, doves and fragmented landscapes: Overabundance of native birds elicit numerical and functional responses of avian top predators; Elsevier; Food Webs; 26; 3-2021; 1-9
dc.identifier.issn
2352-2496
dc.identifier.uri
http://hdl.handle.net/11336/184374
dc.description.abstract
The replacement of natural habitats by fields destined for agricultural-livestock production causes changes in species composition. Some species benefitting from these changes can become more abundant. Increased populations can alter trophic webs. In the center of Argentina, populations of the native eared dove (Zenaida auriculata) have increased significantly in several provinces to such an extent that the species has been declared a pest. In 2014, 20 transects were sampled monthly to determine spatial and temporal abundance fluctuations of two raptor species, the crested caracara (Caracara plancus) and the black-chested buzzard eagle (Geranoaetus melanoleucus) to increases in the population of eared doves. The diet of these birds of prey was determined over 10 years, between 2003-2007 and 2010-2015. The monthly average (± SD) of crested caracaras and black-chested buzzard eagles was 97.75 (± 33.6) individuals and 3.91 (± 3.0) individuals, respectively. The monthly average of eared doves during surveys was 63,460 (± 113,497) individuals. Although both raptor species strongly rely on eared doves as their main prey, only black-chested buzzard eagle's trophic niche breadth was determined by the presence of this prey by having a potential functional response. The crested caracara, by contrast, could show a numerical response to increase of eared dove abundance that was not evident with the black-chested buzzard eagle. Anthropogenic disturbances and habitat fragmentation are the main drivers of eared dove overabundance, whose populations can cause changes in the composition and structure of these two raptor communities and consequently disturb ecosystem processes.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
FUNCTIONAL AND NUMERICAL RESPONSES
dc.subject
OVERABUNDANT SPECIES
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RAPTORS
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TROPHIC WEB
dc.subject.classification
Ecología
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Raptors, doves and fragmented landscapes: Overabundance of native birds elicit numerical and functional responses of avian top predators
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-30T17:56:00Z
dc.journal.volume
26
dc.journal.pagination
1-9
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Costan, Andrea Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
dc.description.fil
Fil: Sarasola, José Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
dc.journal.title
Food Webs
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2352249620300446
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.fooweb.2020.e00184
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