A5039938677- Aquatic Ecosystems and Phytoplankton Dynamics
- Fish Ecology and Management Studies
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Invertebrate Ecology and Behavior
- Environmental Toxicology and Ecotoxicology
- Coastal wetland ecosystem dynamics
- Soil and Water Nutrient Dynamics
- Environmental Conservation and Management
- Marine Biology and Ecology Research
- Marine and coastal ecosystems
- Peatlands and Wetlands Ecology
- Microplastics and Plastic Pollution
- Pharmaceutical and Antibiotic Environmental Impacts
- Constructed Wetlands for Wastewater Treatment
- Toxic Organic Pollutants Impact
- Hydrology and Sediment Transport Processes
- Crustacean biology and ecology
- Ecology and Vegetation Dynamics Studies
- Physiological and biochemical adaptations
- Heavy metals in environment
- Species Distribution and Climate Change
- Environmental DNA in Biodiversity Studies
- Diatoms and Algae Research
- Pesticide and Herbicide Environmental Studies
- Ecology and biodiversity studies
Wageningen University & Research
2016-2025
National Institute for Public Health and the Environment
2004
University of Amsterdam
2000-2002
Institute of Natural Sciences
1973-1974
Summary 1. A logical way of distinguishing functional groups phytoplankton is to cluster species according their traits, such as growth rate and nutrient assimilation constants. However, data for an approach are lacking the vast majority species. 2. In this study, we show that a classification based on simple morphological traits may capture much variability in properties among phytoplankton. We used information more than 700 freshwater species, from 200 lakes situated climate zones ranging...
Now that microplastics have been detected in lakes, rivers, and estuaries all over the globe, evaluating their effects on biota has become an urgent research priority. This is first study aims at determining effect thresholds for a battery of six freshwater benthic macroinvertebrates with different species traits, using wide range microplastic concentrations. Standardized 28 days single bioassays were performed under environmentally relevant exposure conditions polystyrene (20-500 μm) mixed...
Manage local stressors to promote resilience global change
Methane (CH4) strongly contributes to observed global warming. As natural CH4 emissions mainly originate from wet ecosystems, it is important unravel how climate change may affect these emissions. This especially true for ebullition (bubble flux sediments), a pathway that has long been underestimated but generally dominates Here we show remarkably strong relationship between and temperature across wide range of freshwater ecosystems on different continents using multi-seasonal data the...
Nano- and microplastics in freshwater sediments affect the composition of invertebrate communities after 15 months exposure.
Abstract The European Water Framework Directive requires the determination of ecological status in fresh and saline waters. This is to be through establishment a typology surface water bodies, reference (high status) conditions each element (ecotype) lower grades (good, moderate, poor bad) for ecotype. It then classification bodies their restoration at least ‘good status’ specified period. Though there are many methods assessing quality, none has scope that defined Directive. provisions...
Abstract It has been suggested that shallow lakes in warm climates have a higher probability of being turbid, rather than macrophyte dominated, compared with cooler climates, but little field evidence exists to evaluate this hypothesis. We analyzed data from 782 lake years different climate zones North America, South and Europe. tested if systematic differences exist the relationship between abundance submerged macrophytes environmental factors such as depth nutrient levels. In pooled...
We explored how well the aggregated biovolume of groups species can be predicted from environmental variables using three different classification approaches: morphology‐based functional groups, phylogenetic and proposed by Reynolds. assessed relationships between each group conditions canonical correlation analyses as multiple linear regressions, data 211 lakes worldwide ranging subpolar to tropical regions. compared results these with those obtained for single following same protocol....
The neonicotinoid insecticide imidacloprid is used in Bangladesh for a variety of crop protection purposes. Imidacloprid may contaminate aquatic ecosystems via spray drift, surface runoff and ground water leaching. present study aimed at assessing the fate effects on structural (phytoplankton, zooplankton, macroinvertebrates periphyton) functional (organic matter decomposition) endpoints freshwater, sub-tropical Bangladesh. was applied weekly to 16 freshwater microcosms (PVC tanks containing...
Ongoing global climate change will shift nature towards Anthropocene's unprecedented conditions by increasing average temperatures and the frequency severity of extreme events, such as heatwaves. While climatic changes pose an increased threat for freshwater ecosystems, other stressors like pesticides may interact with warming lead to unpredictable effects. Studies that examine underpinned mechanisms multiple stressor effects are scarce often lack environmental realism. Here, we conducted a...
In a microcosm 15N enrichment experiment we tested the effect of floating vegetation (Lemna sp.) and submerged (Elodea nuttallii) on denitrification rates, compared it to systems without macrophytes. Oxygen concentration, thus photosynthesis, plays an important role in regulating rates therefore experiments were performed under dark as well light conditions. Denitrification differed widely between treatments, ranging from 2.8 20.9 μmol N m−2 h−1, strongly affected by type macrophytes...
The importance of leaf litter diversity for decomposition, an important process in terrestrial ecosystems, is much debated. Previous litter‐mixing studies have shown that non‐additive effects can occur, but it not clear why they occurred only half the and which underlying mechanisms explain these conflicting results. We hypothesized incorporating role macro‐detritivores could be important. Although often ignored, are known to strongly influence decomposition. To better understand mixing...
Amendment of contaminated sediment with activated carbon (AC) is a remediation technique that has demonstrated its ability to reduce aqueous concentrations hydrophobic organic compounds. The application AC, however, requires information on possible ecological effects, especially effects benthic species. Here, we provide data the AC addition locomotion, ventilation, avoidance, mortality, and growth two species, Gammarus pulex Asellus aquaticus , in clean versus polycyclic aromatic hydrocarbon...
Greenhouse gas (GHG) emissions from small inland waters are disproportionately large. Climate warming is expected to favor dominance of algae and free-floating plants at the expense submerged plants. Through different routes these functional plant types may have far-reaching impacts on freshwater GHG in future warmer waters, which yet unknown. We conducted a 1,000 L mesocosm experiment testing effects type temperate dominated by either algae, or controls warmed (+4 °C) treatments for one...
Climate impacts of elevated temperatures and more severe frequent weather extremes like heatwaves are globally becoming discernible on nature. While a mechanistic understanding is pivotal for ecosystem management, stressors pesticides may interact with warming, leading to unpredictable effects freshwater ecosystems. These multiple stressor studies scarce experimental designs often lack environmental realism. To investigate the effects, we conducted microcosm experiment 48 days comprising...
SUMMARY 1. We analysed the vegetation structure of 215 lakes in flood plain river Lower Rhine relation to environmental variables related hydrological connectivity, lake morphometry, age and land use on adjacent land. 2. The frequency distribution cover submerged macrophytes was not normal, implying that any one were either scarce or abundant. 3. observed clear water with macrophyte dominance over a wide range total P concentration (0.020–0.40 mg L −1 ). 4. Multiple logistic regression...
1. Logistic regression predicts the probability of occurrence a species as function environmental variables. This technique was applied to large data set describing distribution two common gammarid species, Gammarus fossarum and G. pulex , in streams Netherlands, evaluate its usefulness defining habitat requirements. 2. A method is presented that derives optimum ranges for variables from logistic equations. The calculated ranges, which are related maximum likelihood presence field, agreed...
Summary 1. Shallow lakes and ponds contribute disproportionally to species richness relative other aquatic ecosystems. In‐lake conditions (e.g. presence of submerged plants) seem play a key role in determining diversity, as has been demonstrated for temperate lakes. When water quality deteriorates turbidity increases, such are affected drastically resulting loss diversity. However, it is not clear whether subtropical show the same pattern all groups reacts similarly environmental changes. 2....