Abstract

GIRALDO, María Elena; GUZMAN-V., Carolina; TRONCOSO, Juan C.  and  RONCANCIO-D., Néstor. SPATIAL AND TEMPORAL VARIATION IN THE POPULATION DENSITY OF THE GOLD-RINGED TANAGER (Bangsia aureocincta: THRAUPIDAE), ENDEMIC AND VULNERABLE SPECIES OF COLOMBIA, IN THE TATAMA NATIONAL NATURAL PARK. Bol. Cient. Mus. Hist. Nat. Univ. Caldas [online]. 2019, vol.23, n.2, pp.243-252. ISSN 0123-3068.  https://doi.org/10.17151/bccm.2019.23.2.13.

To know the conservation status of a species it is necessary to determine its abundance and the trends in a framework of rigorous monitoring program. Furthermore, when these species are the conservation target of the conservation strategies as protected areas, their monitoring is the way to assess the effectivity of the management. Bangsia del Tatama (Bangsia aureocincta) was chosen as a conservation target of the Tatama National Natural Park and it represents the ecological integrity of the Andino-Pacific confluence in this zone. To know its conservation status, we evaluate the population density using distance sampling method with point transect in two localities separated by 50 lineal kilometers with a temporal replica in 2016 and other in 2018. The population density found were in 2016 of 152 individuals/km2 (IC95% = 84 - 272; CV= 29,99) and 1036 individuals/km2 (IC95% = 745 - 1442, CV= 16.82), and to 2018 of 341 individuals/km2 (IC95% = 213 - 547; CV= 23.96) and 118 individuals/km2 (IC95% = 78 - 181, CV= 21.4). These results show spatial and temporal variations in the density of the species, probably by longitudinal or altitudinal migrations. However, there is not enough knowledge of the natural history of the species to relate these movements to some factor.

Keywords : PNN Tatama; Bangsia aureocincta; population density; spatial and temporal variation.

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