Instituto Internacional en Conservación y Manejo de Vida Silvestre: Recent submissions
Now showing items 21-40 of 133
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Food niche overlap among neotropical frugivorous bats in Costa Rica
(Universidad Nacional, Costa Rica., 2006)Food habits of 15 species of frugivorous bats were studied at La Selva Biological Station, Costa Rica. Eight hundred and fifty-four (854) fecal samples and 169 samples from fruit parts and seeds discarded by bats beneath ... -
First nest record of the Bare-shanked screech-owl (Otus clarkii)
(Universidad Nacional, Costa Rica., 1997)Reportamos el primer registro de anidación de la Lechucita Serranera (Otus clarkii), encontrado en las tierras altas de Costa Rica. El nido se localizó en un árbol de encino (Quercus copeyensis) a una altura de 3.3m en una ... -
Exploitation of white-lipped peccaries Tayassu pecari (Artiodactyla: Tayassuidae) on the Osa Peninsula, Costa Rica
(Universidad Nacional, Costa Rica., 2002)We studied movements of white-lipped peccaries (Tayassu pecari, Artiodactyla, Tayassuidae) throughout the Osa Peninsula and their use by local people during 1997-2000, using interview techniques. We draw five main conclusions: ... -
External parasites of raptors (Falconiformes and Strigiformes): identification in an ex situ population from Mexico
(Universidad Nacional, Costa Rica., 2011)Raptorial birds harbor a variety of ectoparasites and the mayority of them are host specific. The aim of this study was to identify the ectoparasites of captive birds of prey from Mexico, as well as to verify their impact ... -
Exploitation of white-lipped peccaries Tayassu pecari (Artiodactyla: Tayassuidae) on the Osa Peninsula, Costa Rica
(Universidad Nacional, Costa Rica., 2002)We studied movements of white-lipped peccaries (Tayassu pecari, Artiodactyla, Tayassuidae) throughout the Osa Peninsula and their use by local people during 1997-2000, using interview techniques. We draw five main conclusions: ... -
Evaluation of Three Methods to Estimate Density and Detectability From Roadside Point Counts
(Universidad Nacional, Costa Rica., 2011)Roadside point counts are often used to estimate trends of bird populations. The use of aural counts of birds without adjustment for detection probability, however, can lead to incorrect population trend estimates. We ... -
El cerdo cimarrón (Sus scrofa, Suidae) en la Isla del Coco, Costa Rica: Escarbaduras, alteraciones al suelo y erosión
(Universidad Nacional, Costa Rica., 2001)Feral pigs (Sus scrofa) are of the most damaging exotic vertebrates, specially on oceanic island nativecommunities. Feral pigs inhabit Cocos Island since 1793 and there are around 400-500 individuals. In order toquantify ... -
El cerdo cimarrón (Sus scrofa, Suidae) en la Isla del Coco, Costa Rica: Composición de su dieta, estado reproductivo y genética
(Universidad Nacional, Costa Rica., 2001)Feral pigs (Sus scrofa) cause different kinds of damage specially on oceanic islands. Pigs were introduced at Cocos Island, Costa Rica, during 1793 and bred successfully. I analised feral pigs diet, reproductive state, ... -
Effect of prey availability on the abundance of White-breasted Wood-Wrens, insectivorous birds of tropical lowland forests
(Universidad Nacional, Costa Rica., 2014)Some understory insectivorous birds manage to persist in tropical forest fragments despite significant habitat loss and forest fragmentation. Their persistence has been related to arthropod biomass. In addition, forest ... -
Effect of extreme climatic events resulting in prolonged precipitation on the reproductive output of sea turtles
(Universidad Nacional, Costa Rica., 2018)Anthropogenic climate change is predicted to increase the variation in storm patterns in some areas in the coming decades. This variation in mean rainfall and increase in mean temperature could increase the extinction risk ... -
Efecto de las actividades humanas sobre la diversidad de mamíferos terrestres en un gradiente altitudinal
(Universidad Nacional, Costa Rica., 1999)The effect ofhuman activity on terrestrial marnmals was studied with footprint counts in Guanacaste, Costa Rica (loo30"N, 85°40'W) in February 1998 (in fifty 2 m2 quadrats). The most cornmon species were Canis latrans, ... -
Education as a tool for addressing the extinction crisis: Moving students from understanding to action
(Universidad Nacional, Costa Rica., 2010)Human activity is leading to mass species extinctions worldwide. Conservation biology (CB) courses, taught worldwide at universities, typically focus on the proximal causes of extinction without teaching students how ... -
Dung beetle and terrestrial mammal diversity in forests, indigenous agroforestry systems and plantain monocultures in Talamanca, Costa Rica
(Universidad Nacional, Costa Rica., 2006)In order to explore the importance of indigenous agroforestry systems for biodiversity conservation, we compared the abundance, species richness and diversity of dung beetles and terrestrial mammals across a gradient of ... -
Distribution, diet, and vocalizations of the engangered colombian toad Osornophryne Percrssa (Anura, Bufonidae)
(Universidad Nacional, Costa Rica., 2015)Herein, we describe the distribution, call, diet, and niche model of Osornophryne percrassa. This species has been recorded at 23 locations of Colombia, 14 of which are reported in this work. In addition, we reported the ... -
Dieta estacional del Tayassu pecari (Artiodactyla: Tayassuidae) en el Parque Nacional Corcovado, Costa Rica
(Universidad Nacional, Costa Rica., 2000)The diet of the white-lipped peccari Tayassu pecari was studied from July 1996 to April 1997 in Cor covado National Park, Costa Rica, through fecal analysis and direct observations. The feces consisted of 61.6% fruits, ... -
Development of predictive models to explain the distribution of the West Indian manatee Trichechus manatus in tropical watercourses
(Universidad Nacional, Costa Rica., 2005-05-31)Logistic regressions were used to study the relationship between habitat variables and the use of tropical watercourses by the West Indian manatee Trichechus manatus at Northeastern Costa Rica and Southern Nicaragua. ... -
Deer habitat in western Costa Rica: Impacts of changing technology and land use
(Universidad Nacional, Costa Rica., 1996)White-tailed deer (Odocoileus virginianus) numbers on the Pacific Coast of Costa Rica probably peaked in the nineteenth century as native dry tropical forest was converted to shrubland and secondary forest. Overhunting ... -
Critical condition of the jaguar Panthera onca population in Corcovado National Park, Costa Rica
(Universidad Nacional, Costa Rica., 2007)The jaguar Panthera onca is threatened throughout its range and categorized as Near Threat ened on the IUCN Red List. To inform conservation of the jaguar population in Corcovado National Park, Costa Rica, population ... -
Contribution of live fences to the ecological integrity of agricultural landscapes
(Universidad Nacional, Costa Rica., 2005-08-16)Live fences are conspicuous features of agricultural landscapes across Central America but there is remarkably little information about their abundance, distribution, and function. Here we present a detailed analysis of: ... -
Contexts and patterns of injuries in free-ranging male baboons (Papio Cynocephalus)
(Universidad Nacional, Costa Rica, 1996)Injury in male baboons (Papio cynocephalus) was investigated as an indicator of damaging fights in order to provide a framework for analyses of conflict resolution and dynamics of agonistic competition in primates. The ...