El papel de las pequeñas reservas en la conservación de mamíferos en Colombia/The role of small reserves on mammal conservation in Colombia

The role of private reserves is often underestimated due to their small size and discontinuous distribution. To examine the relevance of small reserves in mammal conservation, with this paper we addressed three objectives: 1) to identify patterns of size, altitude, and distribution of the Colombian private reserves belonging to the Protected Areas National System (SINAP), 2) to examine, as a case study, mammal richness and geographical patterns in twelve reserves, and 3) to identify the contribution of small reserves to Colombian mammal's conservation. To address the first objective, we analyzed size, altitude, and distribution of the SINAP reserves sorted by biogeographic provinces. For the other two objectives, we evaluated the relationship between mammal richness and area, altitude, and connectivity of the twelve small reserves. We found that most of the SINAP reserves are less than 100 ha in size, that they were distributed between 1500 and 2500 m, and that they were in the North Andean province. Together, the twelve reserves harbor 224 species of eleven mammalian orders, with a mean richness of 42.7 species (19 bats, and 23.7 non-volant mammals). We found a positive relationship between both total mammal richness and non-volant mammal richness with reserve area and between non-volant mammal richness and altitude. We also identify those small reserves conserve mainly small-sized species although they might serve as a refuge for medium and large species as well. We highlight those small reserves play a significant role in Colombian mammal's conservation. Keywords. Fragmentation, island biogeography, mammal diversity, protected areas, species-area relationship. El papel de las reservas privadas generalmente se subvalora debido a su pequeño tamaño y su distribución discontinua. Para examinar su relevancia en la conservación de los mamíferos, con este trabajo abordamos tres objetivos: 1) identificar el patrón de tamaño, altitud y distribución de las reservas privadas colombianas del Sistema Nacional de Áreas Protegidas-SINAP, 2) examinar, como estudio de caso, la riqueza de mamíferos y patrones geográficos de doce reservas, y 3) identificar la contribución de las pequeñas reservas a la conservación de mamíferos colombianos. Para el primer objetivo, analizamos el tamaño, altitud y distribución de las reservas privadas del SINAP discriminadas por provincias biogeográficas. Para los subsiguientes objetivos, evaluamos la relación entre la riqueza de mamíferos,