A5065160020- Fish biology, ecology, and behavior
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Conservation, Biodiversity, and Resource Management
- Hydropower, Displacement, Environmental Impact
- Aquatic Invertebrate Ecology and Behavior
- Environmental Sustainability and Education
- Hydrology and Sediment Transport Processes
- Wildlife Ecology and Conservation
- Aquatic Ecosystems and Biodiversity
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Coral and Marine Ecosystems Studies
- Geography and Environmental Studies
- Agricultural Innovations and Practices
- Marine and fisheries research
- Aquaculture Nutrition and Growth
- Environmental and Cultural Studies in Latin America and Beyond
- Plant and animal studies
- Microplastics and Plastic Pollution
- Primate Behavior and Ecology
- Water Governance and Infrastructure
- Ecosystem dynamics and resilience
- Ichthyology and Marine Biology
- Mercury impact and mitigation studies
West Virginia University
2020-2025
Michigan State University
2018-2023
West Virginia Division of Natural Resources
2023
Texas A&M University
2015-2022
University of Michigan
2018
Instituto de Pesquisa Ambiental da Amazônia
2012-2013
Universidade Estadual de Santa Cruz
2010-2011
Instituto de Desenvolvimento Sustentável Mamirauá
2008-2011
Basin-scale planning is needed to minimize impacts in mega-diverse rivers
Abstract The hydrological connectivity of freshwater ecosystems in the Amazon basin makes them highly sensitive to a broad range anthropogenic activities occurring aquatic and terrestrial systems at local distant locations. are suffering escalating impacts caused by expansions deforestation, pollution, construction dams waterways, overharvesting animal plant species. natural functions these changing, their capacity provide historically important goods services is declining. Existing...
Abstract Habitat degradation leads to biodiversity loss and concomitant changes in ecosystem processes. Tropical river floodplains are highly threatened by land cover support high important services, but the extent which floodplain affect fish remains unknown. We combined environmental data collected situ satellite‐mapped landscape features evaluate how species with different ecological strategies assemblage structures respond deforestation of Amazon River. surveyed 462 habitats distributed...
Atypical fish diversity gradients suggest a recent formation of the Amazon system such as we know it today.
Abstract Science and policy worldwide are influenced by predictions from bioeconomic theory that fishing cannot lead fish populations to extinction because effort inevitably moves away depleted resources. Yet such contradict evidence of fishing‐induced extinctions in particular a model, called ‘fishing‐down’, explains historical reductions mean size harvested species tropical multispecies fisheries through the gradual depletion large‐bodied species. This study analysed data on for Arapaima...
Arantes CC, Castello L, Stewart DJ, Cetra M, Queiroz HL. Population density, growth and reproduction of arapaima in an Amazonian river‐floodplain. Ecology Freshwater Fish 2010: 19: 455–465. © 2010 John Wiley & Sons A/S Abstract – Compensatory density effects are key features fish population dynamics that remain poorly understood tropical river‐floodplains. We investigated possible compensatory reproductive processes for a river‐floodplain Arapaima sp., extinction‐prone species South...
Abstract Land-cover change often shifts the distribution of biomass in animal communities. However, effects land-cover changes on functional diversity remain poorly understood for many organisms and ecosystems, particularly, floodplains. We hypothesize that fish floodplains is associated with land cover, which would imply traits affect behavioral and/or demographic responses to gradients cover. Using data from surveys 462 habitats covering a range conditions Amazon River floodplain, we...
Abstract Inland fisheries underpin food security in many tropical countries. The most productive inland and subtropical developing countries occur large river–floodplain systems that are often impacted by land cover changes. However, few studies to date have assessed the effects of changes floodplain on fishery yields. Here, we integrated satellite‐mapped habitat data evaluate deforestation yields 68 lake lower Amazon River, representing a wide range relative amounts woody, herbaceous...
Abstract Tropical river fisheries support food security for millions of people but are increasingly threatened by hydropower development. How dams affect these remains poorly known in most regions. Here, we used a functional traits approach to evaluate the extent which compositions fishery yields Madeira River Basin, largest sub‐basin Amazon, respond dam construction. We also explored how affected monetary value and fishing‐based income communities. collected fishing data 17 locations...
Abstract Riverine floodplains are biologically diverse and productive ecosystems. Although tropical remain relatively conserved ecologically functional compared to those at higher latitudes, they face accelerated hydropower development, climate change, deforestation. Alterations the flood pulse could act synergistically with other drivers of change promote profound ecological state a large spatial scale. State occurs when an ecosystem reaches critical threshold or tipping point, which leads...
Understanding social and environmental impacts household adaptation strategies in the face of expansions energy infrastructure projects is essential to inform mitigation interventions programs that promote well-being. Here we conducted surveys seven communities distributed across varying degrees proximity a hydropower dam complex Brazilian Amazon along about 250 km floodplain Madeira River. Based on interviews with 154 fishers from these communities, examine how perceived changes fisheries...
Microplastic pollution levels and potential sources of contamination in North Central Appalachia are evaluated to fill a major knowledge gap regarding microplastics freshwater systems, which lead negative consequences for the sustainability healthy freshwaters. Fifty-five northern hogsucker fish were sampled from nine sites throughout seven streams region. particles extracted gastrointestinal (GI) tracts via 10% KOH digestion identified visually. A total 2185 identified, ranging between 8...
ABSTRACT Low‐head dams are widespread in river ecosystems around the globe, but due to their effects, removals have become a major mechanism for restoration. Investigations of fish responses dam been mostly conducted short term and shown mixed assemblage (e.g., increased or decreased species richness following removal). Here, we examined effects low‐head on taxonomic composition functional diversity at relatively long (6 years post We hypothesised that differential assemblages removal driven...
Floodplain agriculture is a practice that involves cultivating arable soils along riverbanks and reservoirs, which become submerged during the rainy season. This study aimed to analyze socioeconomic aspects of floodplain farmers in municipalities Amarante, Floriano, Uruçuí banks Parnaíba River northeastern Brazil. We conducted semi-structured interviews using rapport technique. Data were analyzed generalized linear models with four distributions (gamma, inverse Gaussian, exponential,...
Understanding environmental biodiversity drivers in freshwater systems continues to be a fundamental challenge studies of their fish assemblages. The present study seeks determine the degree which landscape variables Amazonian floodplain lakes influences assemblages these environments. Fish species richness was estimated 15 during high and low-water phases correlated with areas four inundated wetland classes: (i) open water, (ii) flooded herbaceous, (iii) shrubs (iv) forest different radius...
Food webs are spatially variable and temporally dynamic in heterogeneous species-rich river floodplains. However, empirical evidence that shows how food vary across landscapes scales river–floodplain ecosystems is limited, especially the tropics. Here, we evaluate flow of energy matter varies among aquatic habitats lower Amazon River We surveyed 109 19 floodplain units (lake systems) analyzed isotopic composition primary production sources fish tissues to estimate relative contributions...
Abstract We investigated how the taxonomic and functional structures of fish assemblages in lower Amazon River floodplain responded to seasonal hydrological variations. Fishes were sampled 440 aquatic habitats across a area 17,673 km 2 during periods high, receding, low rising water. In addition, we recorded local environmental landscape variables known affect floodplains. Redundancy analysis indicated that associated with water levels as well environmental, spatial variables. Our results...