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| Busi,Ana; Cardona-Salazar,Leydy J.; Castillo,Daniela Gómez; Ossa-López,Paula A.; Rivera-Páez,Fredy A.; Vásquez,Rodrigo A.; Castaño-Villa,Gabriel J.. |
| Abstract Populations that breed along steep elevation gradients show diverse physiological and morphological changes in response to the different environmental conditions. The latter has been discussed by Bergmann’s and Allen’s ecogeographic rules about body and appendage sizes and environmental temperature. We compared morphometric measures (mass, bill width, tarsus, wing, and tail length) of a Zonotrichia capensis population in two localities at different elevations with similar latitudes and photoperiods on the western slope of the Colombian Central Andes. We compared a Low Elevation locality (LE) at 1800 m a.s.l. and a High Elevation locality (HE) at 3853 m a.s.l. that have approximate wind speeds of 1.3 m/s and 8.4 m/s, respectively. During 12 months... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Wing length; Tail length; Adaptive traits; Paramo; Territory; Ecogeographic rules. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000200501 |
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| Guntiñas, M.; Lozano, J.; Cisneros, R.; Narváez, C.; Armijos, J.. |
| This study details for the first time the food habits of the culpeo or Andean fox (Lycalopex culpaeus) in high areas of the Ecuadorian Andes during a complete annual cycle. Our objective was to identify prey species, calculate their contribution to diet and test for temporal variation. In total, 304 Andean fox scats were collected within the Podocarpus National Park (Loja province, southern Ecuador). By analysing the content of scats 413 prey items were identified and classified into eight prey groups. Subsequently, the frequency of occurrence (FO) for each prey group was calculated per month together with the relative contribution of estimated consumed biomass (CB). In addition, the Shannon-Wiener’s index was calculated as a measurement of monthly diet... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Andes; Canids; Carnivores; Cloud forest; Diet; Paramo; Podocarpus; Trophic diversity. |
| Ano: 2017 |
URL: http://www.repository.naturalis.nl/record/637723 |
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