A5090025746- Fish biology, ecology, and behavior
- Marine and fisheries research
- Fish Ecology and Management Studies
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Fish Biology and Ecology Studies
- Aquatic Ecosystems and Biodiversity
- Aquatic Ecosystems and Phytoplankton Dynamics
- Isotope Analysis in Ecology
- Coastal and Marine Management
- Sustainability and Ecological Systems Analysis
- Environmental Sustainability and Education
- Aquaculture Nutrition and Growth
- Medical and Biological Sciences
- Land Use and Ecosystem Services
- Water Quality and Pollution Assessment
- Cephalopods and Marine Biology
- Geography and Environmental Studies
- Ocean Acidification Effects and Responses
- Phosphorus and nutrient management
- Environmental Toxicology and Ecotoxicology
- Avian ecology and behavior
- Soil erosion and sediment transport
- Soil and Water Nutrient Dynamics
- Freshwater macroinvertebrate diversity and ecology
Universidade Federal do Rio Grande do Norte
2015-2024
Universidade Federal do Rio Grande
2021
Instituto Federal do Rio Grande do Norte
2020
Universidade Estadual de Goiás
2000-2008
Abstract The River Continuum Concept ( RCC ) assumes that autochthonous primary production in forest streams is limited by light and insufficient to sustain secondary consumers; they must therefore depend on allochthonous carbon from the surrounding forest. Recent studies have, however, questioned importance of stream food webs. There a growing body evidence using stable‐isotope techniques demonstrate algae (autochthonous production) webs tropical streams. actual contributions resources are...
Background Ecosystem modeling applied to fisheries remains hampered by a lack of local information. Fishers' knowledge could fill this gap, improving participation in and the management fisheries. Methodology The same fishing area was modeled using two approaches: based on fishers' scientific For former, data collected interviews through Delphi methodology, for latter, gathered from literature. Agreement between attributes generated model is discussed explored, aiming improve availability,...
We investigated the niche breadth and overlap of fish species occurring in four environments affected by Coaracy Nunes reservoir, Amapá Brazilian State. Seasonal samples fishes were taken using a standard configuration gillnets, as well dragnets, lines, cast-nets. Five hundred forty stomach contents, representing 47 analyzed quantified. Niche estimated indexes Levins Pianka, respectively, while interspecific competition was evaluated null model (RA3). ANOVA Kruskal-Wallis test used, to...
Climate and fisheries interact, often synergistically, may challenge marine ecosystem functioning management, along with seafood provision. Here, we spatially combine highly resolved assessments of climate-driven changes in optimal environmental conditions (i.e., habitats) for the pelagic fish community available industrial fishery data to identify impacted inshore areas Central Southern Atlantic Ocean. Overall, habitat availability remained stable or decreased over recent decades most...
Impacts on tropical rivers affect biodiversity and ecosystem services negatively impacting many economic activities, such as small-scale fisheries. Ecosystem-based fisheries management (EBFM) has been applied to maintain flows for fisheries, support social sustainability. The suitable employment of the EBFM approach requires understanding by quantifying trophic interactions simulating environmental fishery alterations. In this paper, evaluate early changes resulting from damming...
Trophic niche is one of the most tractable dimensions a species niche. Several hypotheses have been proposed to explain global variation in species' trophic niches, but empirical tests are limited. Stable isotope analysis (SIA) d13C (a proxy for basal sources) and d15N vertical position) has increasingly used estimate variation. We performed SIA on dataset over 33,000 stable samples from freshwater fishes across six ecoregions. For 541 populations (358 species), we estimated size x isospace:...
The energetic demand of consumers increases with body size and temperature. This implies that constraints may limit the trophic position larger consumers, which is expected to be lower in tropical than temperate regions compensate for energy limitation. Using a global dataset 3635 marine freshwater ray‐finned fish species, we addressed if how climate affects size–trophic relationship both ecosystems, while controlling effects taxonomic affiliation. We observed significant relationships...
Preparation for oxidative stress (POS) is a widespread adaptive response to harsh environmental conditions, whose hallmark the upregulation of antioxidants. In contrast controlled laboratory settings, animals are exposed multiple abiotic stressors under natural field conditions. Still, interplay between different factors in modulating redox metabolism settings remains largely unexplored. Here, we aim shed light on this topic by assessing changes mussel Brachidontes solisianus naturally tidal...
Information on the mean trophic level of fishery landings in Angola and output from a preliminary Ecopath with Ecosim (EwE) model were used to examine dynamics Angolan marine ecosystem. Results compared nearby Namibian South African ecosystems, which share some exploited fish populations. The results show that: (i) Angola’s has not decreased over years; (ii) There are significant correlations between Angola, Namibia Africa; (iii) ecosystem attributes calculated by EwE models for three...
Marine heatwaves (MHWs) are episodes of anomalous warming in the ocean that can last from a few days to years. MHWs have different characteristics terms intensity, duration and frequency generate thermal stress marine ecosystems. In reef ecosystems, they one main causes decreased presence abundance corals, invertebrates fish. The deleterious capacity often depends on biotic factors, such as trophic control predators prey. Despite evidence factors affecting individual species, combined...