Browsing Artículo Científico by Title
Now showing items 21-40 of 97
-
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 ... -
Cetáceos de las aguas costeras del Pacífico norte y sur de Costa Rica
(Universidad Nacional, Costa Rica., 2010)Cetáceos costeros del Pacífico Norte y Sur de Costa Rica. Veintinueve especies de cetáceos ocurren en aguas costarricenses pero sólo se han realizado investigaciones extensivas para tres especies. Esto último demuestra que ... -
Characterization of attack events on sea turtles (chelonia mydas and lepidochelys olivacea) by jaguar (panthera onca) in naranjo sector, santa rosa national park, Costa Rica
(International Journal of Conservation Science, 2016-01)In this study, we examined sea turtles consumption by jaguars and their temporal and spatial distribution at Naranjo beach, Santa Rosa National Park Costa Rica. We include information about sea turtle consumption rate by ... -
Comparación de la Metodología Mora-Vahrson y el Método Morfométrico para Determinar Áreas Susceptibles a Deslizamientos en la Microcuenca del Río Macho, Costa Rica
(Universidad Nacional, Costa Rica, 2018)Se analizan las metodologías Mora-Vahrson (1994) y el método morfométrico para estudiar sus fortalezas y debilidades en la determinación de zonas susceptibles a deslizamientos. Se explican las metodologías, y posteriormente, ... -
Composition and diversity of butterflies (Lepidoptera, Papilionoidea) along an atmospheric pollution gradient in the Monterrey Metropolitan Area, Mexico
(Pensoft Publishers, 2021)This study compares the variation of richness, abundance and diversity of butterfly species along an atmospheric pollution gradient and during different seasons in the Monterrey Metropolitan Area, Mexico. Likewise, we ... -
Consensus on Criteria for Potential Areas for Wolf Reintroduction in Mexico
(Conservation Biology, 2012-07-19)Given the conflict with human interests that in many cases results in the extirpation of large carnivores, acceptance of their reintroduction is a considerable challenge. By the 1980s Mexican wolves (Canis lupus) were ... -
Conservation value of dispersed tree cover threatened by pasture management
(Universidad Nacional, Costa Rica, 2011)Trees dispersed in pastures are a prominent feature of many Central American landscapes, particularly in cattle producing regions where farmers retain trees to serve as shade, fodder, timber and firewood. The presence of ... -
Consistency in bird use of tree cover across tropical agricultural landscapes
(Ecological Applications, 2014-01-01)In tropical regions where forests have been replaced by agriculture, the future of biodiversity is increasingly dependent on the presence of remnant forest patches and on-farm tree cover within agricultural landscapes. ... -
Consumption of wild rice (Oryza latifolia) by free-ranging jaguars, pumas, and ocelots (Carnivora-Felidae) in northwestern Costa Rica
(Elsevier Inc., 2020-03)There is limited information about plant consumption by felid species, yet anecdotal evidence suggests that plants and grass are a complementary component in the diet of domestic and wild carnivores. We report opportunistic ... -
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 ... -
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: ... -
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 ... -
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 ... -
Detecting river otter Lontra canadensis latrines near bridges: Does habitat and season influence survey success?
(Wildlife Biology, 2012-09)During 2006, we conducted riparian surveys to detect river otter Lontra canadensis latrines at 15 bridge-suites along riverine habitats in southwestern Pennsylvania and western Maryland, USA. We defined a bridge-suite as ... -
Determining nature’s contributions to achieve the sustainable development goals
(Springer Tokyo, 2019-03-01)Academics and policy-makers recognize that humans and nature should be studied and managed as integrated social–ecological systems. Recently, the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem ... -
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. ... -
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, ... -
Distribution and hotspots of the feeding areas of jaguars on sea turtles at a national park in Costa Rica [Distribuição e pontos de concentração de áreas de predação de tartarugas marinhas por onças pintadas em parque nacional da Costa Rica]
(Neotropical Biology and Conservation, 2017)A poorly described aspect of the trophic relation between sea turtles and jaguars is the distribution and hotspots of the feeding areas of jaguars on the nesting beaches. It is very important to identify the areas where ... -
Distribution and invasion progress of Eleutherodactylus coqui (Anura: Eleutherodactylidae) introduced in Costa Rica
(ESALQ Universidade de Sao Paolo, 2019) -
DISTRIBUTION, DIET, AND VOCALIZATIONS OF THE ENDANGERED COLOMBIAN TOAD OSORNOPHRYNE PERCRASSA (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 ...