A5052115068- Peatlands and Wetlands Ecology
- Coastal wetland ecosystem dynamics
- Soil and Water Nutrient Dynamics
- Constructed Wetlands for Wastewater Treatment
- Botany and Plant Ecology Studies
- Fire effects on ecosystems
- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Hydrology and Watershed Management Studies
- Wastewater Treatment and Nitrogen Removal
- Microbial Community Ecology and Physiology
- Climate change and permafrost
- Integrated Water Resources Management
- Forest Ecology and Biodiversity Studies
- Soil erosion and sediment transport
- Methane Hydrates and Related Phenomena
- Aquatic Ecosystems and Phytoplankton Dynamics
- Mine drainage and remediation techniques
- Environmental Conservation and Management
- Fish Ecology and Management Studies
- Ecology, Conservation, and Geographical Studies
- Atmospheric and Environmental Gas Dynamics
- Soil Carbon and Nitrogen Dynamics
- Environmental DNA in Biodiversity Studies
- Transport and Logistics Innovations
Leibniz Institute of Freshwater Ecology and Inland Fisheries
2015-2024
Aarhus University
2016-2024
University of Rostock
2017-2020
University of Bremen
2019
Forschungsverbund Berlin
2019
Freie Universität Berlin
2019
University of Tübingen
2018
Leibniz Association
2007-2013
Institut für Angewandte Gewässerökologie (Germany)
2013
NOAA Chemical Sciences Laboratory
2006
Reactive iron and organic carbon are intimately associated in soils sediments. However, to date, the compounds involved uncharacterized on molecular level. At redox interfaces peatlands, where biogeochemical cycles of dissolved matter (DOM) coupled, this issue can readily be studied. We found that precipitation hydroxides at oxic surface layer two rewetted fens removed a large fraction DOM via coagulation. On aeration anoxic fen pore waters, >90% 27 ± 7% (mean SD) were rapidly (within 24...
Peatlands have been drained for land use a long time and on large scale, turning them from carbon nutrient sinks into respective sources, diminishing water regulation capacity, causing surface height loss destroying biodiversity. Over the last decades, peatlands rewetted biodiversity restoration and, as it strongly decreases greenhouse gas emissions, also climate protection. We quantify success by comparing 320 fen peatland sites to 243 near-natural of similar origin across temperate Europe,...
Abstract Peatlands cover only 3–4% of the Earth’s surface, but they store nearly 30% global soil carbon stock. This significant is under threat as peatlands continue to be degraded at alarming rates around world. It has prompted countries worldwide establish regulations conserve and reduce emissions from this rich ecosystem. For example, EU implemented new rules that mandate sustainable management peatlands, critical reaching goal neutrality by 2050. However, a lack information on extent...
Rewetting of drained fens is necessary to stop further soil degradation and reestablish important ecological functions. However, substantial changes peat characteristics in the upper layers, due drainage land use, could counteract their recovery as nutrient-poor systems for an unknown period. We assessed importance altered properties, such degree decomposition amount redox-sensitive phosphorus (P) compounds, P mobilization different degraded fens. An experimental design involving 63 intact...
Abstract Climate change and human pressures are changing the global distribution extent of intermittent rivers ephemeral streams (IRES), which comprise half river network area. IRES characterized by periods flow cessation, during channel substrates accumulate undergo physico‐chemical changes (preconditioning), resumption, when these rewetted release pulses dissolved nutrients organic matter (OM). However, there no estimates amounts quality leached substances, nor is information on underlying...
Integrated buffer zones (IBZs) represent a novel form of edge-of-field technology in Northwest Europe. Contrary to the common riparian strips, IBZs collect tile drainage water from agricultural fields by combining ditch-like pond (POND), where soil particles can settle, and flow-through filter bed (FILTERBED) planted with Alnus glutinosa (L.), European alder (black alder). The first experimental IBZ facility was constructed thoroughly tested Denmark for its capability retain various nitrogen...
Abstract. Peatland restoration by inundation of drained areas can alter local greenhouse gas emissions as CO2 and CH4. Factors that influence these include the quality amount substrates available for anaerobic degradation processes sources availability electron acceptors. In order to learn about possible high from a rewetted degraded fen grassland, we performed incubation experiments tested effects fresh plant litter in flooded peats on pore water chemistry production emission. The position...
Agricultural management practices promote organic matter (OM) turnover and thus alter both the processing of dissolved (DOM) in soils presumably also export DOM to headwater streams, which intimately connect terrestrial with aquatic environment. Size-exclusion chromatography, combination absorbance emission matrix fluorometry, was applied assess how agricultural land use alters amount composition DOM, as well nitrogen (DON) forms including temporal variations, a temperate region NE Germany....
Abstract Intermittent rivers and ephemeral streams (IRES) may represent over half the global stream network, but their contribution to respiration carbon dioxide (CO 2 ) emissions is largely undetermined. In particular, little known about variability drivers of in IRES sediments upon rewetting, which could result large pulses CO . We present a study examining from 200 dry reaches spanning multiple biomes. Results standardized assays show that mean increased 32‐fold 66‐fold sediment...
Abstract Carbon (C) and nitrogen (N) release from peatlands are closely related to water management soil degradation. However, peat degradation has not been explicitly accounted for when estimating national greenhouse gas inventories. Here, we assembled a comprehensive dataset covering European, Russian Canadian introduced bulk density (BD) as proxy estimate nitrous oxide (N 2 O) dissolved organic carbon (DOC) release. The results show that physical biogeochemical properties of sensitive BD...
Of all terrestrial ecosystems, peatlands store carbon most effectively in long-term scales of millennia. However, many have been drained for peat extraction or agricultural use. This converts from sinks to sources carbon, causing approx. 5% the anthropogenic greenhouse effect and additional negative effects on other ecosystem services. Rewetting can mitigate climate change may be combined with management form paludiculture. Rewetted peatlands, however, do not equal their pristine ancestors...
Surface-groundwater interactions in intermittent rivers and ephemeral streams (IRES), waterways which do not flow year-round, are spatially temporally dynamic because of alternations between flowing, non-flowing dry hydrological states. Interactions surface groundwater often create mixing zones with distinct redox gradients, potentially driving high rates carbon nutrient cycling. Yet a complete understanding how underlying biogeochemical processes across surface-groundwater flowpaths IRES...
Abstract Substantial amounts of money have been invested in peatland restoration over the last decades to address current challenges global changes and enhance biodiversity. Given magnitude financial investments pressing societal needs, it is essential that appropriate decisions are made about techniques employed avoid negative consequences optimise benefits human society. Based on knowledge expertise has developed recent decades, three approaches discussed regarding their implications for...
Abstract. The rewetting of drained peatlands alters peat geochemistry and often leads to sustained elevated methane emission. Although this is produced entirely by microbial activity, the distribution abundance methane-cycling microbes in rewetted peatlands, especially fens, rarely described. In study, we compare community composition relation porewater two fens northeastern Germany, a coastal brackish fen freshwater riparian fen, with known high fluxes. We utilized 16S rRNA high-throughput...
There have been widespread attempts to rewet peatlands in Europe and elsewhere the world restore their unique biodiversity as well important function nutrient carbon sinks. However, changes hydrological regime therefore oxygen availability likely alter abundance of enzyme-inhibiting polyphenolic compounds, which suggested a "latch" preventing large amounts from being released into atmosphere by microbial mineralization. In recent years, variety factors identified that appear weaken latch...