Daniel Hernández

JULANA (Jugando en la Naturaleza) y Laboratorio de Control Ambiental (Arrayanes-CETP/UTU)

The hidden diversity: invertebrates of temporary ponds in Barra Grande Uruguay. Temporary ponds of Uruguay and the invertebrates that inhabit them represent relatively unexplored ecosystems, without clearreferences in relation to the diversity levels they host. In the present work we report the presence of 216 species and morphospecies of invertebr...

Resource acquisition and allocation impacts individual fitness. Using pellet analysis of breeding adults and stable isotopes of carbon and nitrogen of down feathers of Kelp Gull (Larus dominicanus) nestlings, we evaluated the relationship between urban refuse (beef and chicken) and natural food (fish) consumption of individual females during the pr...

Felids are among the species most threatened by habitat fragmentation resulting from land-use change. In the Uruguayan Savanna ecoregion, about 30% of natural habitats have been lost, large felids have been eradicated from most of the region, and the impact of anthropogenic threats over the smaller species that remain is unknown. To develop managem...

The uneven spatial distribution of biodiversity is a defining feature of nature. In fact, the implementation of conservation actions both locally and globally has progressively been guided by the identification of biodiversity ‘hotspots’ (areas with exceptional biodiversity). However, different regions of the world differ drastically in the availab...

In this study, we focused on the seasonal variation of the determinants of territory size in the weakly electric fish Gymnotus omarorum. This species is a seasonal breeder that displays year-round territorial aggression. Female and male dyads exhibit indistinguishable non-breeding territorial agonistic behavior and body size is the only significant...

The expression of territorial behavior in wild species is especially suited to explore how animals integrate individual traits with dynamic environmental and social contexts. In this study, we focused on the seasonal variation of the determinants of territory size in the weakly electric fish Gymnotus omarorum . This species is a seasonal breeder th...

El presente informe resume el trabajo del monitoreo del estado de conservación de la biodiversidad del Parque Nacional Esteros de Farrapos e Islas del Río Uruguay. Dicho monitoreo fue realizado por un equipo de investigadores del MNHN—MEC, en el marco de un acuerdo de trabajo con el SNAP—MVOTMA, entre 2018 y 2019. Para el monitoreo fueron seleccion...

The continental and marine territories of Uruguay are characterised by a rich convergence of multiple biogeographic ecoregions of the Neotropics, making this country a peculiar biodiversity spot. However, despite the biological significance of Uruguay for the South American subcontinent, the distribution of biodiversity patterns in this country rem...

Reading scientific articles is fundamental for researchers, not only to keep pace with advances in their field, but also to know those giants on whose shoulders they are standing. In this sense, Courchamp and Bradshaw (2018) recently proposed a list of 100 seminal papers deemed to be of major importance in ecology, thus providing a general 'must-re...

Rural Uruguay is undergoing a long process of transformations that tend to weaken the maintenance of local cultural traits, including society-nature relationships. To preserve these traits and enhance our understanding of these relationships, it is necessary to both strive for the empowering of rural communities and to establish a constructive exch...

Listado de especies registradas en el marco del trabajo del grupo JULANA en Paso Centurión

First record of jaguarundi (Puma yagouaroundi) (Mammalia: Carnivora: Felidae) in Uruguay, with comments about participatory monitoring. We present the first record of a wild jaguarundi (Puma yagouaroundi) in Uruguay obtained as part of a participatory monitoring with trap-cameras together with the community of Paso Centurión, Cerro Largo.

Synthetic plastics have become an indispensable component of modern life, and the amount of plastics disposal has increased dramatically as a result. With human population increasing, it is expected that the prevalence of plastic debris in the environment will also increase, unless sustainable daily habits are incorporated, waste management improve...

Resumen En Uruguay se encuentran presentes actualmente cinco especies de xenartros. Se relevó la infor-mación existente acerca de sus localidades de registro en colecciones científicas nacionales y en bibliografía. Se dividieron los datos en completos e incompletos en función de la posibilidad de datarlos y georreferen-ciarlos. Se encontraron 172 r...

II Simposio Internacional de Biología de Peces Anuales

El tamaño corporal es una de las propiedades más importantes que poseen los seres vivos, relacionándose con prácticamente todos sus rasgos ecológicos y fisiológicos. El análisis de la distribución de tamaños presente en un sistema y sus determinantes representa, por tanto, un abordaje robusto a los principales procesos que estructuran las comunidad...

Body size may be more important than species identity in determining species interactions and community structure. However, co-occurrence of organisms has commonly been analysed from a taxonomic perspective and the body size is rarely taken into account. On six sampling occasions, we analysed patterns of killifish co-occurrences in nestedness (tend...

Cabassous tatouay and Tamandua tetradactyla are the least frequent of the five xenarthran species currently present in Uruguay. Given the scarce records for these species, their potential distribution was modeled using the software Maxent in order to identify the most favorable areas for their presence and assess their occurrence within the Nationa...

De las cinco especies de xenartros presentes actualmente en Uruguay, Cabassous tatouay y Tamandua tetradactyla son las menos frecuentes. Dada la escasez de registros para estas especies, se modeló su distribución potencial utilizando el programa Maxent con el fin de identificar las zonas más favorables para su ocurrencia y evaluar su presencia dent...

11th International Mammalogical Congress

11th International Mammalogical Congress

RESUMEN Se implementó un proyecto piloto para evaluar el uso de cajas nido como método de estudio de la historia de vida y la reproducción de aves urbanas. Esta metodología tuvo una rápida respuesta por parte de las aves, y resultó práctica para trabajos en ecología reproductiva. Palabras clave: cajas nido, aves, reproducción, Troglodytes aedon. AB...

II Congreso Uruguayo de Zoología

Primer Congreso Uruguayo ded Zoología

10 th International Mammalogical Congress

Monitoreo en Areas Protegidas

Descriptive analysis of the status of Xenarthra in Uruguay, including major threats faced by this group of mammals.

V Congreso Nacional de Áreas Naturales Protegidas

IV Congreso Nacional de Áreas Naturales Protegidas

XXI Jornadas Argentinas de Mastozoología