A5059279857- Fish Ecology and Management Studies
- Aquatic Invertebrate Ecology and Behavior
- Freshwater macroinvertebrate diversity and ecology
- Environmental Toxicology and Ecotoxicology
- Water resources management and optimization
- Water Quality and Resources Studies
- Species Distribution and Climate Change
- Coastal and Marine Management
- International Maritime Law Issues
- Hydrology and Watershed Management Studies
- Heavy metals in environment
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water Quality and Pollution Assessment
- Soil and Water Nutrient Dynamics
- Environmental DNA in Biodiversity Studies
- Hydrology and Sediment Transport Processes
- Diatoms and Algae Research
- Marine Bivalve and Aquaculture Studies
- Geographic Information Systems Studies
- Arctic and Russian Policy Studies
- Mollusks and Parasites Studies
- Environmental and Social Impact Assessments
- Land Rights and Reforms
- Pesticide and Herbicide Environmental Studies
- Sustainability and Climate Change Governance
University of Canberra
2015-2024
Michigan State University
2023
ACT Government
2010-2022
Dominican University of California
2020
Estée Lauder (United States)
2020
University of New Brunswick
1984-2019
East Carolina University
2019
Great Lakes Science Center
1997-2013
United States Geological Survey
1997-2013
Oeko Institut
2011-2013
Pearly mussels (Unionacea) are widespread, abundant, and important in freshwater ecosystems around the world. Catastrophic declines pearly mussel populations North America other parts of world have led to a flurry research on biology, ecology, conservation. Recent feeding, life history, spatial patterning, has augmented, modified, or overturned long-held ideas about ecology these animals. begun benefit from contribute current suspension life-history theory, metapopulations, flow refuges,...
Freshwater mussel (Superfamily Unionoidea) communities are important components of food webs, and they link influence multiple trophic levels. Mussels filter from both the water column sediment with ciliated gills. Differences in cilia structure arrangement might allow species to partition resources. omnivores that feed across levels on bacteria, algae, detritus, zooplankton, perhaps, dissolved organic matter. Living mussels their spent shells provide or improve habitat for other organisms...
The biological assessment of rivers i.e., their through use aquatic assemblages, integrates the effects multiple-stressors on these systems over time and is essential to evaluate ecosystem condition establish recovery measures. It has been undertaken in many countries since 1990s, but not globally. And where national or multi-national monitoring networks have gathered large amounts data, poor water body classifications necessarily resulted rehabilitation rivers. Thus, here we aimed identify...
Rivers suffer from multiple stressors acting simultaneously on their biota, but the consequences are poorly quantified at global scale. We evaluated biological condition of rivers globally, including largest proportion countries Global South published to date. gathered macroinvertebrate- and fish-based assessments 72,275 37,676 sites, respectively, 64 study regions across six continents 45 nations. Because were based differing methods, different systems consolidated into a 3-class system:...
Abstract The apolipoprotein E (apoE) ε4 allele is overrepresented, and the apoE ε2 underrepresented, in Alzheimer's disease. To assess risk of cognitive impairment individuals with these genotypes general population, we studied a population‐based sample 1,899 65 years older as follow‐up to Iowa 65+ Rural Health Study. Multiple regression logistic analyses demonstrated significant effects predicting performance on delayed recall task over 4‐ 7‐year period. magnitude this effect was, however,...
Abstract Long‐term fish community surveys were carried out in the Michigan waters of Lake Huron using bottom trawls from 1976 to 2006. Trends abundance indices for common species (those caught 10% or more trawl tows) estimated two periods: Early (1976‐1991) and late (1994‐2006). All significantly decreased during period with exception johnny darter Etheostoma nigrum spottail shiner Notropis hudsonius , which showed no significant trends, round goby Neogobius melanostomus increased abundance....
Sound decision making in environmental research and management requires an understanding of causal relationships between stressors ecological responses. However, demonstrating cause–effect natural systems is challenging because difficulties with variability, performing experiments, lack replication, the presence confounding influences. Thus, even best-designed study may not establish causality. We describe a method that uses evidence available extensive published literature to assess support...
Soil-moisture information plays an important role in disaster predictions, environmental monitoring, and hydrological applications. A large number of research papers have introduced a variety methods to retrieve soil-moisture from different types remote sensing data, such as optical data or radar data. We evaluate the most robust for retrieving bare soil vegetation-covered soil. begin with introduction importance challenges extraction development retrieval methods. An overview using is...
Aquatic ecosystems are under threat from multiple stressors, which vary in distribution and intensity across temporal spatial scales. Monitoring assessment of these have historically focussed on collection physical chemical information increasingly include associated observations biological condition. However, ecosystem is often lacking because the scale quality frequently fail to match those available measurements. The advent high-performance computing, coupled with new earth observation...
We compared feeding habits and trophic-level relationships of unionid species in a detritus-dominated river an alga-dominated lake using biochemical analyses, gut contents, stable-isotope ratios. The δ 13 C ratios for algae other food-web components show that all unionids from both the used bacterial carbons, not algal as their main dietary source, spite positive selection concentration diatoms green water column mantle cavity. Algae did provide key nutrients such vitamins A D phytosterols...
SYNOPSIS. The reproductive cycle of the zebra mussel {Dreissena polymorpha) is highly variable throughout its range in Europe, Russia2, and North America. environmental factors influencing this variation are poorly understood, but successful reproduction occurring areas where it was initially believed that adult mussels could not survive (i.e., southern United States). differences from site-to-site make difficult to predict timing specific events, such as start larval production, important...
Toxicants have both sub-lethal and lethal effects on aquatic biota, influencing organism fitness community composition. However, toxicant within ecosystems may be altered by interactions with abiotic biotic ecosystem components, including biological interactions. Collectively, this generates the potential for sensitivity to highly context dependent, significantly different outcomes in than laboratory toxicity tests predict. We experimentally manipulated stream macroinvertebrate communities...
Understanding the cumulative effects of multiple stressors on biodiversity is key to managing their impacts. Stressor interactions are often studied using an additive/antagonistic/synergistic typology, aimed at identifying situations where individual stressor reduced or amplified when they act in combination. Here, we analysed variation family richness stream macroinvertebrates groups Ephemeroptera, Plecoptera and Trichoptera (EPT) 4658 sites spanning a 32° latitudinal range eastern...
Nine species of unionids cleared laboratory-raised Escherichia coli from artificial pond water. The six unionid collected rivers had higher clearance rates than the three ponds, when was normalized to millilitres per gram dry tissue mass minute. Analysis variance indicated that all lotic examined form a group with similar rates. When on basis gill surface area, by become remarkably one another regardless mass, but differ significantly those lentic unionids. cirri found laterofrontal cells...
There are presently four freshwater bivalves in the United States that produce larvae or veligers commonly found water column: two forms of Asian clams and species dreissenids. Portions geographic range three these bivalves, one clam (Corbicula fluminea), zebra mussels (Dreissena polymorpha), quagga rosteriformis bugensis), overlap, causing problems with larval identification. To determine which characteristics can be used to separate forms, adult clams, quaggas, were brought into laboratory...
Our studies of the APOE genotype in AD confirm a strong association epsilon 4 allele with development and decreased risk associated 2. From clinical/neuropathological perspective, major effects are to lower age onset increase amount A beta deposit brain. Neither rate progression nor number neurofibrillary tangles were affected. We also carried out longitudinal population-based assessment determine for developing cognitive impairment someone general population based on genotype. about...