ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via re... more ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via remote camera-trapping at Wildsumaco Wildlife Sanctuary, a new preserve located near Sumaco National Park, in the eastern Andean foothills of Ecuador. We recorded 85 capture events and ten individuals, including one juvenile, over a total of 3220 camera-trap nights. Activity was mostly nocturnal and we found no difference in abundance between primary and secondary forest. Our capture rate (2.64 captures/100 camera-trap nights) indicates a high abundance of margays in the region. The site lies within a matrix of agricultural lands and the high abundance and seasonal occurrence data seem to suggest that while one or two females may occupy the area permanently, most margays likely use the site as a corridor. Continued deforestation and habitat alteration pose a serious threat to the margays of the region. The data we present here suggest that an unusually high abundance of margays occur at the site, making it an important area for continued research and conservation efforts.
... of G. sabri-nus (RW Thorington, Jr., pers. comm.; B. S. Arbogast, in litt.). Furthermore, the... more ... of G. sabri-nus (RW Thorington, Jr., pers. comm.; B. S. Arbogast, in litt.). Furthermore, the par-aphyly within G. sabrinus may reflect in-complete sorting of ancestral mtDNA lin-eages rather than the true evolutionary re-lationships among clades (Avise et al., 1984; Patton and ...
Molecular clocks have profoundly influenced modern views on the timing of important events in evo... more Molecular clocks have profoundly influenced modern views on the timing of important events in evolutionary history. We review recent advances in estimating divergence times from molecular data, emphasizing the continuum between processes at the phylogenetic and population genetic scales. On the phylogenetic scale, we address the complexities of DNA sequence evolution as they relate to estimating divergences, focusing on models of nucleotide substitution and problems associated with among-site and among-lineage rate ...
Phylogeography has become a powerful approach for elucidating contemporary geographical patterns ... more Phylogeography has become a powerful approach for elucidating contemporary geographical patterns of evolutionary subdivision within species and species complexes. A recent extension of this approach is the comparison of phylogeographic patterns of multiple co-distributed taxonomic groups, or ‘comparative phylogeography.’ Recent comparative phylogeographic studies have revealed pervasive and previously unrecognized biogeographic patterns which suggest that vicariance has played a more important role in the historical development of modern biotic assemblages than current taxonomy would indicate. Despite the utility of comparative phylogeography for uncovering such ‘cryptic vicariance’, this approach has yet to be embraced by some researchers as a valuable complement to other approaches to historical biogeography. We address here some of the common misconceptions surrounding comparative phylogeography, provide an example of this approach based on the boreal mammal fauna of North America, and argue that together with other approaches, comparative phylogeography can contribute importantly to our understanding of the relationship between earth history and biotic diversification.
ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via re... more ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via remote camera-trapping at Wildsumaco Wildlife Sanctuary, a new preserve located near Sumaco National Park, in the eastern Andean foothills of Ecuador. We ...
ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via re... more ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via remote camera-trapping at Wildsumaco Wildlife Sanctuary, a new preserve located near Sumaco National Park, in the eastern Andean foothills of Ecuador. We recorded 85 capture events and ten individuals, including one juvenile, over a total of 3220 camera-trap nights. Activity was mostly nocturnal and we found no difference in abundance between primary and secondary forest. Our capture rate (2.64 captures/100 camera-trap nights) indicates a high abundance of margays in the region. The site lies within a matrix of agricultural lands and the high abundance and seasonal occurrence data seem to suggest that while one or two females may occupy the area permanently, most margays likely use the site as a corridor. Continued deforestation and habitat alteration pose a serious threat to the margays of the region. The data we present here suggest that an unusually high abundance of margays occur at the site, making it an important area for continued research and conservation efforts.
... of G. sabri-nus (RW Thorington, Jr., pers. comm.; B. S. Arbogast, in litt.). Furthermore, the... more ... of G. sabri-nus (RW Thorington, Jr., pers. comm.; B. S. Arbogast, in litt.). Furthermore, the par-aphyly within G. sabrinus may reflect in-complete sorting of ancestral mtDNA lin-eages rather than the true evolutionary re-lationships among clades (Avise et al., 1984; Patton and ...
Molecular clocks have profoundly influenced modern views on the timing of important events in evo... more Molecular clocks have profoundly influenced modern views on the timing of important events in evolutionary history. We review recent advances in estimating divergence times from molecular data, emphasizing the continuum between processes at the phylogenetic and population genetic scales. On the phylogenetic scale, we address the complexities of DNA sequence evolution as they relate to estimating divergences, focusing on models of nucleotide substitution and problems associated with among-site and among-lineage rate ...
Phylogeography has become a powerful approach for elucidating contemporary geographical patterns ... more Phylogeography has become a powerful approach for elucidating contemporary geographical patterns of evolutionary subdivision within species and species complexes. A recent extension of this approach is the comparison of phylogeographic patterns of multiple co-distributed taxonomic groups, or ‘comparative phylogeography.’ Recent comparative phylogeographic studies have revealed pervasive and previously unrecognized biogeographic patterns which suggest that vicariance has played a more important role in the historical development of modern biotic assemblages than current taxonomy would indicate. Despite the utility of comparative phylogeography for uncovering such ‘cryptic vicariance’, this approach has yet to be embraced by some researchers as a valuable complement to other approaches to historical biogeography. We address here some of the common misconceptions surrounding comparative phylogeography, provide an example of this approach based on the boreal mammal fauna of North America, and argue that together with other approaches, comparative phylogeography can contribute importantly to our understanding of the relationship between earth history and biotic diversification.
ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via re... more ABSTRACT: We investigated abundance and activity patterns of the margay (Leopardus wiedii) via remote camera-trapping at Wildsumaco Wildlife Sanctuary, a new preserve located near Sumaco National Park, in the eastern Andean foothills of Ecuador. We ...
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