José F. González-Maya

Proyecto de Conservación de Aguas y Tierras | ProCAT · Direction

Colombia está ubicado en el sexto lugar de los países más ricos del mundo en mamíferos silvestres, contando con 528 especies. Su región Caribe cuenta con gran variedad de hábitats potenciales para este grupo, albergando 188 especies correspondientes al 36% de las registradas en el país, muchas de ellas endémicas. En este estudio se realizó la carac...

Aim Deforestation of the Atlantic Forest of eastern Paraguay has been recent but extensive, resulting in a fragmented landscape highly influenced by forest edges. We examined edge effects on multiple dimensions of small mammalian diversity. Location Forest fragments of eastern Paraguayan Atlantic Forest. Methods We trapped small mammal species at...

Leopardus tigrinus is among the least known carnivore species in the Neotropics, including considerable taxonomic uncertainty. Here we model the distribution, connectivity and overlap with existing conservation areas for the species in Colombia. Using a Species Distribution Modeling approach, we estimated current potential range of the species in C...

Pressures are mounting for the adoption of a Global Biodiversity Framework that transforms conservation and sustainable use efforts worldwide. Underlying this challenge is the biodiversity paradox: biological diversity predominantly concentrates in the tropics, while human, institutional, and financial resources are primarily located at higher lati...

Conservation biogeography, which applies principles, theories, and analyses of biodiversity distribution patterns to address conservation challenges, can provide valuable insight and guidance to policy making for protection of biodiversity at multiple scales. The temperate and tropical ecosystems of the Nearctic-Neotropical transition in the small...

Introducción: El Área de Conservación La Amistad-Pacífico incluye tres corredores biológicos que pueden beneficiarse de viveros de árboles nativos para la reforestación y permeabilización del paisaje. Objetivo: Probar una red de viveros comunitarios rentables apoyados por partes interesadas locales para garantizar la viabilidad a largo plazo y la r...

ABSTRACT. “Participatory research and conservation of threatened species in two wildlife protected areas of the Cotón River watershed, Costa Rica”. Introduction: Species categorized as threatened according to the IUCN are recognized as a global conservation priority, and their vulnerability to extinction demands immediate conservation actions. The...

Las áreas protegidas y conservadas representan una de las estrategias de conservación más prominentes y críticas para asegurar la biodiversidad. A pesar de la creciente cobertura global de las áreas protegidas, quedan muchos desafíos por resolver, principalmente en relación con su gestión, pero también en la interfaz entre las áreas dedicadas a la...

Understanding species distribution to target biodiversity conservation actions in countries with high biodiversity, scarce data availability and low study sites accessibility is very challenging. These issues limit management and conservation actions even on charismatic and potentially conflictive species like large carnivores. We developed a geogr...

Mammal conservation in transformed landscapes depends heavily on the role of protected areas, especially for species used by local communities both within and around these areas. We evaluated the level of representation and the magnitude of the influence of humans, via human footprint, across the range of mammals used by local communities in the De...

Mammalian carnivores are among the best studied groups in terms of evolutionary history. However, the effects of species interactions in shaping community assemblages remain poorly understood. We hypothesize that indirect interactions via ecological trait filtering play a key role in structuring carnivoran assemblages, mediate coexistence and thus...

Assemblages of large mammal species play a disproportionate role in the structure and composition of natural habitats. Loss of these assemblages destabilizes natural systems, while their recovery can restore ecological integrity. Here we take an ecoregion-based approach to identify landscapes that retain their historically present large mammal asse...

Protected areas (PAs) constitute one of the main tools for global landscape conservation. Recently, payments for environmental services (PES) have attracted interest from national and regional governments and are becoming one of the leading conservation policy instruments in tropical countries. However, the degree to which areas designated for PES...

Protected areas (PAs) constitute one of the main tools for global landscape conservation. Recently, payments for environmental services (PES) have attracted interest from national and regional governments and are becoming one of the leading conservation policy instruments in tropical countries. However, the degree to which areas designated for PES...

The White-nosed Coati, Nasua narica, is a small carnivore distributed from the United States to Ecuador, and whose occurrence in Colombia had only been confirmed from the biogeographic Chocó. Although it was previously erroneously considered widespread in the country, a recent revision identified inconsistencies with some supporting records there....

Introducción: El sapo arlequín, Atelopus varius, se encuentra en peligro crítico y fue declarada “aparentemente extinta” en Costa Rica en 1996. Una de las posibles causas fue el hongo patógeno Batrachochytrium dendrobatidis. En 2008 se redescubrió una población viva en Las Tablas y aquí analizamos la situación con este hongo. Objetivo: Evaluar prev...

Deambulant entre éssers humans: registres notables sobre el jaguar (Panthera onca) prop d’assentaments humans al Chaco Humit del Paraguai Els jaguars (Panthera onca Linnaeus, 1758) han estat extirpats de gairebé el 55 % de la seva àrea de distribució original a Amèrica i de prop del 24 % del territori del Paraguai. En aquesta comunicació presentem...

The jaguar ( Panthera onca ) is one of the most threatened carnivores in the Americas. Despite a long history of research on this charismatic species, to date there have been few systematic efforts to assess its population size and status in most countries across its distribution range. We present here the results of the two National Jaguar Surveys...

Conservation planning requires information at adequate scales for decision-making and priority definition. Considering the importance of the Usumacinta river basin, we assessed the distribution of vertebrate richness (amphibians, birds and mammals), threatened species, and their representativeness in protected areas (PAs). We overlapped distributio...

A partir del Índice de Huella Espacial Humana se evidenció una reducción del 15 % en las áreas idóneas para la presencia del oso andino en Colombia entre 1970 y el 2015. Esto podría llevar a que las poblaciones en el sur se aislaran respecto de las que se distribuyen en el norte de Colombia y en Venezuela.

Resumen Por medio de un muestreo con cámaras trampa entre marzo y mayo de 2017, se caracterizó el ensamblaje de mamíferos medianos y grandes de la Reserva Natural de la Sociedad Civil (RNSC) Jaime Duque, ubicado en la Sabana de Bogotá, departamento de Cundinamarca, Colombia. Se registraron seis especies incluyendo Nasuella olivacea, Leopardus tigri...

Tremarctos ornatus (F.G. Cuvier, 1825) is a tremarctine bear commonly known as the Andean bear. It is a medium-sized bear with black to dark red-brown pelage with dense, long, coarse fur; creamy white marks occur on the chin, neck, and chest, and often white to creamy marks occur on the face, around the muzzle, and eyes. It is distributed in the tr...

El tapir centroamericano, Tapirus bairdii, es el mamífero ungulado más grande del Neotrópico. Es considerado como un elemento fundamental de la dinámica de los ecosistemas tropicales. La especie es altamente susceptible a los cambios en su hábitat natural y a presiones como la cacería. A pesar de estar presente en varios países, hasta la fecha poco...

Anthropogenic climate change (CC) is affecting a wide range of ecosystems and species, modifying current biodiversity patterns, and increasing the risk of extinction for many species. To address this threat, identifying, managing and protecting climate refugia has been suggested as an approach to incorporate CC into systematic conservation planning...

Medium and large mammals are among the groups of species most frequently used by local communities, and at the same time, they play a fundamental role in ecosystems. In the Caribbean region of Colombia, some efforts have been made to document these uses, but there are still important gaps in the information necessary for their conservation. In this...

Despite recent advances in the compilation of primary biodiversity data, biases in the quality and the accessibility of the information difficult the inference of biodiversity spatial patterns. We present the first systematic analysis on the spatial distribution of terrestrial wild mammal records for continental Colombia. By using multiple database...

For decades, the middle Magdalena Valley of Colombia has been a scene of heavy social and civil conflict, which have resulted on a sustained and extensive expansion of the agricultural border, dedicating most lands to extensive cattle production activities. Such extensive disturbances have led to a progressive loss and isolation of natural forests...

En este número de Mammalogy Notes presentamos tres notas sobre extensiones de distribución, siete notas de historia natural y tres inventarios de mamíferos. Las contribuciones provienen de Colombia, Perú, México, Brasil y Venezuela. Adicionalmente, incluimos tres nuevos trabajos de la serie especial sobre colecciones de mamíferos de Colombia. De es...

Vivint als Andes: registres notables de la distribució altitudinal de l’os andí Tremarctos ornatus (Ursidae) a Boyacá, Colòmbia Malgrat la importància d’aquesta espècie, l’os andí encara presenta importants buits d’informació pel que fa a distribució. És endèmic als Andes i ocupa el gradient d’elevació complet, tot i que els registres que ho const...

Los rastros ocultos de Chingaza - Guía de Mamíferos del Parque Nacional Natural Chingaza

Understanding species distributions and the variation of assemblage structure in time and space are fundamental goals of biogeography and ecology. Here, we use an ecological niche modeling and macroecological approach in order to assess whether constraints patterns in carnivoran richness and composition structures in replicated assemblages through...

Galictis vittata is a small carnivore distributed in all the natural regions of Colombia, but it is considered as a "demographic rarity" due to its low density throughout its range in the national territory. This note documents new records with some ecological data and compiles the existing evidence about the local distribution of G. vittata in the...

The Andean bear (Tremarctos ornatus; bear) is endemic to the tropical Andes Mountains of South America. Previous assessments predict that bear populations will decline by >30% in the next 30 years. The species may face the greatest threats within its historical distribution in Colombia where rapid agricultural expansion into natural habitats is inc...

The increase in human tapir conflict and lack of management options is worrying and has been identified as a research priority in previous conservation planning reviews for the group. Crop-raiding by Baird’s tapir was reported on a private farm within the La Amistad Biosphere Reserve, Costa Rica. We conducted an open interview with the owner and ba...

Memorias del Simposio Internacional de Ecología y Conservación del Jaguar y Otros Felinos Neotropicales - Junio de 2018, Cancún, México

During the last century the coyote (Canis latrans) has increased its distribution in Central America. Before the 1980's it had not been recorded in Panama. New records show that coyotes have crossed the Panama Canal, indicating that continues to expand, therefore there is a possibility that it will reach northern South America. Our objectives were...

Large mammalian herbivores are experiencing population reductions and range declines. However, we lack regional knowledge of population status for many herbivores, particularly in developing countries. Addressing this knowledge gap is key to implementing tailored conservation strategies for species whose population declines are highly variable acro...

We studied a population of Atelopus varius in Las Tablas Protected Zone in southwest Costa Rica, where we have estimated occupancy rates of tadpoles along the Cotón River. In addition, we report the first tadpoles observed in the wild in 20 years. Tadpoles’ rate of occupancy is greater in habitat containing native forest than in disturbed areas bor...

Species tend to be less abundant at the limits of their geographic distribution. Giant and lesser anteaters have their southernmost limits in Argentina and Paraguay, where scarce information exists regarding their ecology and conservation. We present a study carried out in the Paraguay River floodplain, in an area dedicated to cattle rearing using...

Living in the Andes: noteworthy records on the altitudinal distribution of the Andean bear Tremarctos ornatus (Ursidae) in Boyacá, Colombia. Despite the importance of Andean bears, much relevant information regarding their distribution is lacking. Endemic to the Andes, the species is known to occupy the entire elevation gradient, but records to sup...

En nuestro cumpleaños número cinco, y con el interés de que Mammalogy Notes se mantenga a la vanguardia de los sistemas de publicación digitales, hemos dado los pasos para adoptar la versión 3 del sistema editorial del Open Journal System (OJS).

Se documenta un primer acercamiento al conocimiento sobre riqueza, distribución regional y conservación de los carnívoros (Mammalia: Carnivora) registrados hasta la fecha en el departamento de Sucre, Caribe colombiano.

No digital copies are available at this time

Species distribution models (SDMs) are statistical tools used to develop continuous predictions of species occurrence. ‘Integrated SDMs’ (ISDMs) are an elaboration of this approach with potential advantages that allow for the dual use of opportunistically collected presence-only data and site-occupancy data from planned surveys. These models also a...

Atelopus varius was believed to be extinct in Costa Rica until the rediscovery of a population within the Las Tablas Protected Zone (LTPZ) in 2008. This rediscovery represented a research and conservation opportunity, including contributing new information about the species´naturalspecies´natural history. There are few reported species that prey on...

Thirty years after his death, Professor Federico Medem's work continues to impact and influence crocodile research primarily in terms of his contribution on scientific collections and his pioneering work in systematics and taxonomy, especially for South America. Based on a global review of scientific collections, we assessed his contribution in ter...

Rodent eradications are a key island restoration activity to counteract extinction and endangerment to native species. Despite the widespread use of brodifacoum as a rodenticide for island restoration, there has been little examination of its potential negative eff ects on native reptiles. Here we examined the survival of two endemic insular lizard...

The Greater Grison, Galictis vittata, is a poorly known species in Colombia. Throughout its range major knowledge gaps exist regarding its ecology and conservation. To compile and analyse information about the species´ distribution records in the department of Cordoba, Colombia and assess its presence probability according to landscape attribute...

Human-Andean bear (Tremarctos ornatus) conflicts are increasing due to the establishment of livestock or crops near to its natural habitats. Here we report scavenging time patterns of Andean bears and the potential social scavenging behaviors in Choachí and Guasca municipalities, Cundinamarca department, buffer zone of Chingaza National Natural Par...

La Lista Roja de Especies Amenazadas de la Unión Mundial para la Naturaleza (UICN) es considerada la principal herramienta a nivel global que evalúa el estado de conservación de todas las especies, otorgándole una categoría de acuerdo con su riesgo de extinción, bajo umbrales claramente definidos, y que busca dar un sentido sistemático y de univers...

Diet is among the most important and basic ecological aspects of a species. Information on diet composition, seasonality, and spatial variation is necessary for adequate ecological understanding and therefore conservation. Andean bears (Tremarctos ornatus) have been poorly studied across their distribution, and especially in Colombia, therefore mos...

Durante los días 5 y 9 de abril de 2018, entre las 17h00 y 18h00 aproximadamente, se realizaron avistamientos de un individuo macho aislado con signos compatibles con acariasis severa en la misma localidad (9°31ʼ47,215ˮN-75°21ʼ06,185ˮW; 165,7 msnm; Figura 1). Durante la primera observación, el individuo se encontró dentro de una oquedad formada ent...

Human–wildlife conflict, habitat loss, and prey hunting are the main threats to carnivore species worldwide. Forest conversion as consequence of deforestation and agricultural expansion increases the proximity between carnivores and humans, thereby escalating conflicts. Knowledge about carnivore species in data-poor countries, such as Colombia, is...

The IUCN Red List of Threatened Species is the most reliable and authoritative source of information regarding the conservation status of biodiversity globally (Schipper et al. 2008a, Schipper et al. 2008b). This list gets periodical updates, including new assessments for new species or those that were not previously assessed, and accounting for ch...

Even though the puma (Puma concolor) is the second largest felid in America and is widely distributed in both the continent and in Colombia. Knowledge about its food habits in many areas of the Neotropics, especially in the highlands, is still limited. We surveyed nine localities in Tamá NNP (National Natural Park) and its buffer zone monthly from...

The harlequin frog, Atelopus varius, is a diurnal species, critically endangered, and distributed in Costa Rica and Panama. Herein, we report an unusual nocturnal activity for this species at Las Tablas Protected Zone, Costa Rica. We observed an individual on an herbaceous plant at night, performing slow movements while feeding on ants. Despite A....

Presentamos un inventario de anuros en la zona de amortiguamiento del Parque Internacional La Amistad, realizado por personas locales. Discutimos los resultados en torno al marco de Ciencia Ciudadana y su aplicación para estudios de anfibios, así como el nivel de incertidumbre de la identificación de especies por fotografías. Registramos 15 especie...

Phytotelmata are microhabitats used for shelter by many anuran species. Understanding anuran-microhabitat relationship is important for their conservation as it could notably affect host-pathogen interactions (i.e. chytrid fungus-amphibians), and could help us to understand their habitat disturbance responses. Herein, we studied spatial and tempora...

Harlequin frogs have suffered severe declines across the Neotropics. We present a population assessment for a recently discovered population of Atelopus varius from Costa Rica. Using mark-recapture methods from September 2011 to February 2013, we estimated survival and recruitments parameters using Cormack-Jolly-Seber models. We obtained 222 captur...