A5058773124- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Freshwater macroinvertebrate diversity and ecology
- Soil and Water Nutrient Dynamics
- Hydrology and Sediment Transport Processes
- Fish Biology and Ecology Studies
- Environmental and Ecological Studies
- Environmental and Cultural Studies in Latin America and Beyond
- Marine and fisheries research
- Soil erosion and sediment transport
- Wildlife Ecology and Conservation
- Geological and Tectonic Studies in Latin America
- Archaeological and Geological Studies
- Landslides and related hazards
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- Aeolian processes and effects
- Aquatic Invertebrate Ecology and Behavior
- Tree-ring climate responses
- Water Resource Management and Quality
- Hydrology and Watershed Management Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
National University of Comahue
2015-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2015-2022
Biodiversity Research Institute
2019
Centro Científico Tecnológico - Patagonia Norte
2017
Abstract Salmonid sport fishery management in Argentinian Patagonia is usually guided by stakeholder perceptions, which do not consider the biological and ecological constraints acting upon aquatic resources. An example of this are policies for Traful Lake, where Atlantic salmon, Salmo salar L., was actively stocked during last decade an attempt to change fish assemblage structure create a highly valuable fishery. This study assesses likelihood these achieving such changes through...
Abstract According to assemblage theory, three factors regulate fish biogeography: restriction of dispersion, environmental restrictions and biotic interactions. The first two act on a regional scale delimit the area action third, which operates local scale. Salmonid introductions began in Patagonia 1904, this has led restructuring trophic webs an increase number top predators. This situation allowed us evaluate, natural setting, how communities are formed different geographic scales. We...
Abstract Understanding how ecosystem processes influencing fish distribution operate across spatial scales is important to understand biological invasions. Salmonids, originally from the Northern Hemisphere, have been repeatedly introduced throughout world, making them an ideal group test hypotheses about factors driving We assessed influence of environmental variables at watershed scale on abundance and structure salmonid assemblages in breeding streams Upper Limay river basin, Rio Negro,...
Abstract Habitat fragmentation and loss threaten freshwater biodiversity worldwide. Habitats that are essential as fish spawning nursery sites critical, must be identified for conservation purposes. Littoral zones within Patagonian lakes, especially shallow vegetated areas, represent important areas the Creole perch, Percichthys trucha . Spawning behaviour has been little studied, so it is not known whether these movements performed in groups. A particular area of a deep lake northern...
Abstract Fluvial dynamics are driven by multiple environmental factors and scales. Studies coupling hydrological nutrient of Andean streams almost nonexistent. We characterized two adjacent with contrasting drainage basins: Casa de Piedra, originating in a small mountain lake running through pristine landscape, Gutiérrez, large piedmont an anthropized landscape. Despite both basins sharing geology climate, we found that the presented dynamics. Piedra had higher discharge flashiness shorter...
Fluvial dynamics are driven by multiple environmental factors and scales. Studies coupling hydrological nutrient of mountain streams almost non-existent in the Northern Patagonian region; which is characterised a temperate-cold climate. We studied two adjacent with contrasting drainage basins: Casa de Piedra (41°07′30.11″S 71°27′13.16″W), originates small lake runs through pristine landscapes, Gutiérrez (41°09′36.18″S 71°24′37.19″W) that large piedmont an anthropized landscape. The displayed...
Los arroyos andinos norpatagónicos son ecosistemas oligotróficos y fluyen por cuencas de drenaje poco impactadas. Sin embargo, esto cambió con el tiempo la urbanización dichas cuencas. Este trabajo propone determinar estado trófico ubicados en un gradiente urbanización. Para ello se utilizaron como variables indicadoras cuenca densidad poblacional porcentaje su área modificada. Además, evaluó relación estas concentración exportación nutrientes totales, nitrógeno (NT) fósforo (PT), biomasa...
Eutrophication is a key human-induced stressor in streams and often consequence of intensified land use. We characterised how population density influences dissolved nutrients its ratio Patagonian Andean during the baseflow hydrological period. Research was conducted at stream Gutiérrez drainage basin (41°09′36.18″S 71°24′37.19″W) located Nahuel Huapi National Park, Argentina. A fraction this corresponds to city San Carlos de Bariloche, where households use on-site wastewater treatment...
Fil: Fernandez, Maria Valeria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Patagonia Norte. Instituto en Biodiversidad Medioambiente. Universidad del Comahue. Regional Bariloche. Medioambiente; Argentina
Abstract We characterized how land use influenced dissolved nutrients and periphytic algal biomass in an Andean basin from Northwest Patagonia. Nutrient export, especially inorganic nitrogen increased with human population density. However, no correlation between nutrient concentration was found, which could instead be limited by light availability. Our results suggest that local N-limited ecosystems are liable to eutrophication demographic pressure alternative wastewater treatment...
Abstract Ecological communities are structured by combinations of biotic and abiotic factors acting at different spatial scales. However, the relative influence scale‐related variables on assemblage composition is poorly understood, despite being key to effective efficient management fluvial ecosystems. We took advantage relatively recent well‐studied history salmonid introductions in Patagonia evaluate if non‐native species show patterns association with depending scale environmental...
Abstract Ecological communities are structured by combinations of factors known as habitat templates. These templates work a filter allowing only species with particular traits or phenotypes to establish and persist excluding all others. Defining which variables spatial scales drive the assembly freshwater is key effective efficient management fluvial ecosystems. We took advantage relatively recent well-studied history salmonid introductions in Patagonia evaluate if non-native show different...