ABSTRACT
Introduction: The Apolinar's Wren Cisthotorus apolinari is an endemic species of the Eastern Andes of Colombia currently classified as Critically Endangered (CR) at the national level and Endangered (EN) worldwide, mainly due to the degradation of wetlands, their primary habitat, and the parasitism of the nests. Objetive: Evaluate the state of the populations of C. apolinari in seven wetlands of the Sabana de Bogotá, searching to define what the areas evaluated mean that it hosts the largest population of the species and what other factors determine these population sizes. Methods Between July and December 2014 in seven wetlands we monitoring carried out using counting points and auditory censuses, the abundance of the Apolinar's Wren was recorded, the vegetation cover where the individuals were recorded and the abundances of Shiny Cowbird Molothrus bonariensis. Results: There were 63.6 h of observation and 88 counting points, obtain a nine records of C. apolinari , one individual in Tibanica, three in La Florida and five in Gualí, mainly associated with the reed Schoenoplectus californicus. None of the biotic and abiotic factors evaluated in the wetlands, were found to determine the presence of the Apolinar's Wren, but trends were present for some variables as the presence of S. californicus and Thypa spp. Conclusions: The population of C. apolinari has had a significant reduction of up to 94 %, added to a possible local extinction in the wetland of La Conejera. These results seek to provide relevant information to contribute to the formulation of effective conservation measures for the protection of the species and its habitat throughout its distribution in the country.
ABSTRACT
Se presentan los resultados del inventario de la macrofauna observada (desde febrero 23 hasta mayo 31 del 2001) en Santa María del Lago, humedal netamente urbano, de los trece presentes en la ciudad de Bogotá durante su rehabilitación paisajística (recuperación del espejo de agua, revegetalización y reforestación). Los resultados incluyen una lista con las observaciones sobre el hábitat, actividad y frecuencia de tres especies de peces, una de anfibios, treinta y una de aves y tres de mamíferos, registradas en los diferentes muestreos mensuales con una intensidad de uno por semana. Dentro de la fauna del citado humedal, se resalta la presencia de los mamíferos Cavia porcellus (Caviidae), Oeomys speciosus (Muridae) y Olygoryzomys fulvescens (Muridae), la rana Hyla labialis (Hylidae) y los peces Eremophilus mutissii (Trichomycteridae) y Grundulus bogotensis (Characidae), que se consideraban desaparecidos del humedal. También se registran por primera vez para el humedal, nueve especies de aves (Anas platyrhynchos, Carduelis psaltria, Anser anser, Diglossa humeralis, Piranga olivacea, P. rubra, Rhamphocelus dimidiatus, Stelgidopteryx ruficollis, Vireo olivaceus), al igual que el pez exótico (C. auratus).
This article presents the results of the inventory of the observed macrofauna (from February 23rd to May 31st 2001) in Santa María del Lago, one of the thirteen present wetlands in Bogotá during its landscape rehabilitation (recovery of the water mirror, revegetation and reforestation). The results include a list with observations regarding the habitat, activity and frequency of 3 fish species, 1 amphibian, 31 bird and 3 mammal species, registered in the different monthly samplings with a weekly intensity. The fauna of the previously-mentioned wetland, includes mammals such as Cavia anolaimae (Caviidae), Oeomys speciosus (Muridae), and Olygoryzomys fulvescens (Muridae), the frog Hyla labialis (Hylidae) and the fish Eremophilus mutissii (Trichomycteridae) and rundulus bogotensis (Characidae) considered missing from the wetland. New species are also reported for first time in the wetland, 9 species of birds (Anas platyrhynchos, Carduelis psaltria, Anser anser, Diglossa humeralis, Piranga olivacea, P. rubra, Rhamphocelus dimidiatus, Stelgidopteryx ruficollis, Vireo olivaceus), and the exotic fish (C. auratus).