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A predictive distribution model for Andinomys edax (Rodentia: Cricetidae) in Argentina Mastozool. neotrop.
Jayat,Pablo; Pacheco,Silvia; Ortiz,E..
We studied the distribution of Andinomys edax (Rodentia, Cricetidae, Sigmodontinae) in northwestern Argentina. Presence data obtained from field records, museum specimens and literature were used to model the potential distribution of this species. Andinomys edax was known in Argentina from only 41 occurrence localities, most of them restricted to Jujuy province. Here we add new localities from Catamarca, Jujuy, Salta and Tucumán provinces. We used the maximum entropy method (Maxent) and seven environmental variables to produce a potential distribution map of the species. The 7.015 cumulative threshold (corresponding to the equal test of sensitivity and specificity) was the most efficient hypothetical distribution according to the omission rate. The area...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maxent; Northwestern Argentina; Potential distribution; Sigmodontinae.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000200005
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El ucumar (Tremarctos ornatus): mito y realidad de su presencia en Argentina Mastozool. neotrop.
Rumiz,Damián I; Brown,Alejandro D; Perovic,Pablo G; Chalukian,Silvia C; Erica Cuyckens,G.A; Jayat,Pablo; Falke,Fernando; Ramadori,Daniel.
Entre los numerosos inventarios faunísticos realizados en el noroeste argentino, sólo un autor principal afirma haber documentado la presencia actual de Tremarctos ornatus. Nosotros examinamos los 34 reportes publicados de esta especie contra más de 800 puntos de relevamientos afines en Salta y Jujuy que registraron la presencia de jaguar, tapir, monos y ataques de carnívoros al ganado, pero no de oso. Por nuestros estudios allí y en Bolivia, creemos muy improbable la existencia de una población de osos en Argentina y recomendamos mayor cautela en el uso de información anecdótica y rastros indirectos antes de proclamar un hallazgo de tal importancia.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Evidencia anecdótica; Indicios; Noroeste argentino; Oso andino; Yungas.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000200019
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Latitudinal patterns of species richness distribution in South American carnivores Mastozool. neotrop.
Monjeau,J. Adrián; Tort,Jorge A.; Márquez,Jorge; Jayat,Pablo; Palmer Fry,Benjamin N.; Nazar Anchorena,Sofía D.; Di Vincenzo,Andrés; Polop,Francisco.
The distribution and range of the 45 South American species of Carnivora (except Pinnipedia) currently recognized taxonomically was delimited from a detailed study of the literature. This study analyzes the ecogeographic patterns that operate at a continental scale in this family, which are particularly peculiar for not respecting natural landscape frontiers. The relation between the species distribution and latitudinal bands was evaluated using a Geographical Information System (GIS) with statistical regressions and correlations being carried out between geographical variables, areas, species richness, and latitude. The latitudinal bands with a higher species richness corresponded to the tropical bands with larger quantity of ecoregions, whereas a marked...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carnivora; Energetic gradient; Macroecology; Neotropics.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832009000100009
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