A5047768051- Environmental Toxicology and Ecotoxicology
- Pesticide and Herbicide Environmental Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Fish Ecology and Management Studies
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Freshwater macroinvertebrate diversity and ecology
- Pesticide Exposure and Toxicity
- Aquatic Ecosystems and Phytoplankton Dynamics
- Heavy metals in environment
- Marine and coastal ecosystems
- Marine Bivalve and Aquaculture Studies
- Water Quality and Pollution Assessment
- Mine drainage and remediation techniques
- Electrochemical Analysis and Applications
- Environmental Chemistry and Analysis
- Parasite Biology and Host Interactions
- Insect and Pesticide Research
- Pesticide Residue Analysis and Safety
- Environmental and Social Impact Assessments
- Toxic Organic Pollutants Impact
- Marine Biology and Environmental Chemistry
- Microplastics and Plastic Pollution
- Algal biology and biofuel production
- Animal Ecology and Behavior Studies
University of Coimbra
2015-2024
Institute of Marine Research
2007-2015
Schiller International University
2005
Executive summary : One of the most internationally used bioassays for toxicity screening chemicals and monitoring effluents contaminated waters is acute test with daphnid crustaceans, in particular that performed Daphnia magna.
Abstract The purpose of the present study was to develop sensitive, rapid, and easily quantified avoidance tests for small fish ( Danio rerio ) in order provide important ecological information during toxicity assessments. Fish were exposed three replicate linear flow‐through chambers consisting five compartments. test system found a contamination gradient, with mean dilutions each compartment 90, 70, 50, 30, 10%. Also, absence toxic uniformly distributed along five‐compartment chambers....
Information on how atrazine can affect the spatial distribution of organisms is non-existent. As this effect has been observed for some other contaminants, we hypothesized that atrazine-containing leachates/discharges could trigger avoidance by fish Poecilia reticulata and form a chemical barrier isolating upstream downstream populations. Firstly, guppies were exposed to an gradient in non-forced exposure system, which moved freely among concentrations, assess their ability avoid atrazine....
Most laboratory tests may underestimate adverse effects in real scenarios of contamination because they imply the forced exposure organisms to contaminants, thus overlooking possibility emigration. Avoidance from contaminants has been observed several aquatic organisms, and avoidance-based have recommended be included risk assessment studies. To reduce uncertainty extrapolation derived results, first aim present study was compare both median avoidance concentration lowest-observed-effect...
This study presents data on the detailed evaluation (tier 2) of a site-specific ecological risk assessment (ssERA) in former smelter area contaminated with metals (Santo Amaro, Bahia, Brazil). Combining information from three lines evidence (LoE), chemical (ChemLoE), ecotoxicological (EcotoxLoE) and (EcoLoE), Triad approach, integrated values were calculated to rank sites confirm potential disclosed tier 1. Risk for habitat retention functions each sampling point. Habitat function included...
This study evaluated a short-term sublethal endpoint for in situ toxicity assays estuarine sediments, based on postexposure feeding of the polychaete Hediste (Nereis) diversicolor Müller. A method precisely quantifying rates H. was established under laboratory conditions using Artemia franciscana Kellog nauplii. The sensitivity response to copper investigated by comparing growth and lethality. 48-h 96-h median lethal concentration (LC50) were 241 125 microg/L, respectively, whereas...
In summer, streams in Portuguese eucalyptus forests frequently experience drought resulting isolated pools, saturated with leaf litter, which the leachates may generate toxic and hypoxic conditions. We assessed ecological effects of Eucalyptus globulus leachate without aeration (i.e., low flow vs pool scenarios) on microbial decomposition leaves toxicity to survival, avoidance, feeding behavior Chironomus riparius Meigen (Diptera:Chironomidae), Echinogammarus meridionalis Pinkster...
There is growing concern that modifications to the global environment such as ocean acidification and increased ultraviolet radiation may interact with anthropogenic pollutants adversely affect future marine environment. Despite this, little known about nature of potential risks posed by interactions. Here, we performed a multifactorial microcosm experiment assess impact acidification, B (UV-B) oil hydrocarbon contamination on sediment chemistry, microbial community (composition function)...