Sleeping sites of spider monkeys (Ateles geoffroyi) in logged and unlogged tropical forests
Periodo de realización: 2015/06/01 al 2015/01/01
Tipo: Artículo científico
Lugar(es) de estudio: Calakmul, Camp., México
Resumen: "Selective logging can have negative effects on biodiversity, and on key ecological
processes such as seed dispersal and forest regeneration. Yet, the effect that timber
extraction has on animal behaviour and habitat use is poorly known. We tested whether
the density, distribution, and composition of sleeping sites used by spider monkeys
(Ateles geoffroyi) differed between two logged and two unlogged forest sites in the
Calakmul region, southeastern Mexico. We recorded a total of 74 sleeping sites (0.11
sleeping sites/ha). The density of sleeping sites did not differ between forest conditions.
Most (97 %) sleeping sites were located in medium-stature semi-evergreen forest, and
only 3 % in low-stature seasonally inundated forest. In 3 of 4 sites, the number of
sleeping sites in core areas was significantly greater than expected by chance, showing
an aggregated spatial distribution, particularly in areas containing a greater density of
feeding trees. About half (51 %) of the sleeping sites were composed of a single large
tree (mean ± SD diameter at breast height, 42.2 ± 21.9 cm) from a small number of tree
species, such as Lonchocarpus castelloi, Bucida buceras and Lysiloma latisiliquum.
These results suggest that the current level of timber extraction seems to have no effect
on the density, distribution and composition of sleeping sites. Nevertheless, because the
species that were selected as sleeping trees are subject to timber extraction, the
availability of sleeping sites is expected to decrease in coming decades, potentially
modifying the habitat use of this primate species."