A5024136200- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Methane Hydrates and Related Phenomena
- Constructed Wetlands for Wastewater Treatment
- Geology and Paleoclimatology Research
- Microbial Community Ecology and Physiology
- Botany and Plant Ecology Studies
- Environmental Conservation and Management
- Aquatic Invertebrate Ecology and Behavior
- Land Use and Ecosystem Services
- Geological formations and processes
- Atmospheric and Environmental Gas Dynamics
- Economic and Environmental Valuation
- Fire effects on ecosystems
- Marine and coastal ecosystems
- Freshwater macroinvertebrate diversity and ecology
- Species Distribution and Climate Change
- Forest Ecology and Biodiversity Studies
- Fish Ecology and Management Studies
- Urban Green Space and Health
- Wastewater Treatment and Reuse
- Biological Control of Invasive Species
- Plant responses to water stress
- Isotope Analysis in Ecology
Leibniz Institute of Freshwater Ecology and Inland Fisheries
2020-2024
Queen Mary University of London
2017-2024
B-Ware (Netherlands)
2022-2024
Radboud University Nijmegen
2015-2024
Radboud Institute for Molecular Life Sciences
2024
Radboud University Medical Center
2024
Berlin Center for Genomics in Biodiversity Research
2022-2023
Vrije Universiteit Amsterdam
2023
Art Research Centre of the Slovak Academy of Sciences
2022-2023
Utrecht University
2023
Wetland ecosystems are important reservoirs of biodiversity and significantly contribute to emissions the greenhouse gases CO2, N2O, CH4. High anthropogenic nitrogen (N) inputs from agriculture fossil fuel combustion have been recognized as a severe threat ecosystem functioning, such control gas emissions. Therefore, it is understand how increased N input into pristine wetlands affects composition activity microorganisms, especially in interaction with dominant wetland plants. In series...
Peat decomposition driven by soil metabolic processes is responsible for approximately 2 % of global annual anthropogenic greenhouse gas emissions. A peat soil's redox potential (Eh) and pH reflect its biogeochemical state are therefore linked to the rate production. In this study, we aim establish if continuous Eh measurements an effective tool monitor thus quantify effects wetting efforts. We applied in-situ (>150 sensors 2020–2022) as a proxy processes, which validated under field...
Peatlands cause ~2% of anthropogenic greenhouse gas (GHG) emissions due to drainage. In study, we aimed assess (1) if laboratory aerobic and anaerobic heterotrophic respiration rates peat layers accurately represent observed CO2 CH4 (chamber eddy-covariance respectively) emissions, (2) the contribution processes surface GHG emission fluxes. Furthermore, hypothesized that redox potential is more suitable than water table depth capture metabolic soil associated rates, are crucial when...
Peatlands are significant terrestrial carbon reservoirs which play a key role in the global cycle, both as major sinks and emitters of dioxide. When studying accumulation emissions from peatlands it is essential to scale observed fluxes (net emissions) available soil (C) stocks. For many peatland areas Netherlands, average thickness peat deposit known, however, important parameters on density substrate quality poorly documented.In this study we present high resolution profile data for wide...
Abstract Azolla spp., a water fern often used for phytoremediation, is strong phosphorus (P) accumulator due to its high growth rate and N 2 fixing symbionts (diazotrophs). It known that plant stimulated by P, but the nature of interactive response both along P gradient, related changes in growth-limiting factors, are unclear. We determined growth, sequestration rates filiculoides N-free at different concentrations. The appeared be biphasic highest levels ≥10 µmol l −1 . Diazotrophic...
Mass developments of macrophytes occur frequently worldwide and are often considered a nuisance when interfering with human activities. It is crucial to understand the drivers this perception if we develop effective management strategies for ecosystems macrophyte mass developments. Using comprehensive survey spanning five sites different species in four countries (Norway, France, Germany South Africa), quantified growth as among residents visitors, recreational activities (swimming, boating,...
Abstract. The sequestration of nutrients from surface waters by aquatic macrophytes and sediments provides an important service to both natural constructed wetlands. While emergent species take up the sediment, submerged floating filter directly water, which may be more efficient in It remains unclear, however, whether their efficiency is sufficient for wastewater purification how plant nutrient loading affects distribution over plants, water sediment. We therefore determined removal...
Centuries of drainage have stimulated peat decomposition. To counteract the resulting increase in greenhouse gas emission and land subsidence Dutch agricultural peatlands, passive active subsurface infiltration (SSI) systems been developed for peatland rewetting. Here, we studied effects SSI on groundwater levels, porewater composition redox potential four drained peatlands Netherlands to determine how soil processes are affected, especially carbon nutrient dynamics. For three years, levels...
Abstract. In pristine Sphagnum-dominated peatlands, (di)nitrogen (N2) fixing (diazotrophic) microbial communities associated with Sphagnum mosses contribute substantially to the total nitrogen input, increasing carbon sequestration. The rates of symbiotic fixation reported for are, however, highly variable, and experimental work on regulating factors that can mechanistically explain this variation is largely lacking. For two common fen species (Sphagnum palustre S. squarrosum) from a high...
Abstract. Peatlands play an important role in the global carbon (C) cycle due to their large C storage potential. Their sequestration rates, however, highly vary depending on climatic and geohydrological conditions. Transitional mires are often characterised by floating peat with infiltration of buffered groundwater or surface water. Sphagnum mosses grow top, producing recalcitrant organic matter fuelling stocks. As species strongly differ tolerance higher pH these mires, composition can be...
Abstract Salt marshes suffered large‐scale degradation in recent decades. Extreme events such as hot and dry spells contributed significantly to this, are predicted increase not only intensity, but also frequency under future climate scenarios. Such repetitive extreme may generate cumulative effects on ecosystem resilience. It is therefore important elucidate how marsh vegetation responds stress, whether changes key species interactions can modulate In this study, we investigated moderate...
Abstract Newly constructed wetlands are created to provide a range of ecosystem services, including carbon sequestration. Our understanding the initial factors leading successful peat formation in such environments is, however, limited. In new 100-ha wetland that was north Amsterdam (the Netherlands), we conducted an experiment determine best combination abiotic and biotic starting conditions for peat-forming processes. Sediment were main driver vegetation development, biomass production...
Abstract Dense beds of aquatic plants are often perceived as nuisance and therefore mechanically removed, at substantial cost. Such removal, however, may affect a range ecosystem functions consequently also the services that benefit society. We studied five cases: River Otra (Norway), Spree (Germany), Lake Kemnade Grand‐Lieu (France) Hartbeespoort Dam (South Africa). In all, plant growth is managed, but dominant species, geographic setting major societal uses different. quantified 12 final...
Aquatic plants (macrophytes) are important for ecosystem structure and function. Macrophyte mass developments are, however, often perceived as a nuisance commonly managed by mechanical removal. This is costly ineffective due to macrophyte regrowth. There insufficient understanding about what causes development, people who use water bodies consider be nuisance, or the potential negative effects of removal on function ecosystems. To address these gaps, we performed standardized set in situ...
Structural diversity formed by dense, floating Stratiotes aloides stands, generates hotspots of biodiversity flora and fauna in wetlands. However, only part the populations become emergent provide this important facilitation. Since it has been hypothesised that its buoyancy depends on rates underwater photosynthesis, we investigated role dissolved CO2 availability PAR biomass production a controlled greenhouse experiment. Photosynthesis growth were strongly influenced both availability. At...
Abstract. The sequestration of nutrients from surface waters by aquatic macrophytes and soils provides an important service both natural constructed wetlands. While emergent species take up the soil, submerged floating filter directly water, which may be more efficient in It remains unclear, however, whether their efficiency is sufficient for wastewater purification, how plant nutrient loading affects distribution over plants, soil. We therefore determined removal efficiencies different...