Mostrar el registro sencillo del ítem
dc.contributor.author
Zalba, Sergio Martín
dc.contributor.author
Cairo, Samanta Lis
dc.date.available
2019-08-07T16:53:04Z
dc.date.issued
2007-01-01
dc.identifier.citation
Zalba, Sergio Martín; Cairo, Samanta Lis; Effects of a paved road on mortality and mobility of red bellied toads (Melanophryniscus sp.) in Argentinean grasslands; Brill Academic Publishers; Amphibia-Reptilia; 28; 3; 1-1-2007; 377-385
dc.identifier.issn
0173-5373
dc.identifier.uri
http://hdl.handle.net/11336/81078
dc.description.abstract
Melanophryniscus sp. is an endemic toad restricted to Sierra de la Ventana, in the Argentine Pampas. Part of its reproductive habitat is crossed by a paved road. We studied the effects of the road on the mortality and mobility of the toads. During the days following rain, we surveyed transects on both sides of the road, capturing, photographing and immediately releasing each toad. Population size in the area was estimated in 1074 individuals (871 to 1363, 95% CI) by means of mark-recapture analysis. We found fifteen individuals killed by vehicles in the 2003-04 and ten in the 2004-05 reproductive seasons. This mortality represents from 2.5 to 5.9% of the population annually, considering that 73% of the mortality period was sampled and a detection rate of dead frogs of 40%. Other factors associated to roadside habitat, such as rapid drying of roadside ditches, maintenance work, increased frequency of fire, pollution by gas, oil and fuel emissions and losses from vehicles, and poaching as pets by tourists, may also reduce the survival of the toads. We recorded capture sites and calculated the average distance between captures as 33.04 m for males and 22.50 m for females. Only two of the 76 observations of recaptured toads were made on the opposite side of the road. Roads can be considered as having a significant impact on this species by augmenting mortality, hindering the mobility of the species and increasing habitat isolation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Brill Academic Publishers
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Fragmentation
dc.subject
Amphibia
dc.subject.classification
Conservación de la Biodiversidad
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Effects of a paved road on mortality and mobility of red bellied toads (Melanophryniscus sp.) in Argentinean grasslands
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-07-12T16:14:08Z
dc.identifier.eissn
1568-5381
dc.journal.volume
28
dc.journal.number
3
dc.journal.pagination
377-385
dc.journal.pais
Países Bajos
dc.journal.ciudad
Leiden
dc.description.fil
Fil: Zalba, Sergio Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina
dc.description.fil
Fil: Cairo, Samanta Lis. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina
dc.journal.title
Amphibia-Reptilia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://brill.com/abstract/journals/amre/28/3/article-p377_7.xml
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1163/156853807781374818
Archivos asociados