A5050443403- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Methane Hydrates and Related Phenomena
- Microbial Community Ecology and Physiology
- Peatlands and Wetlands Ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Soil erosion and sediment transport
- Climate variability and models
- Land Use and Ecosystem Services
- Groundwater and Isotope Geochemistry
- Hydrocarbon exploration and reservoir analysis
- Spectroscopy and Laser Applications
- Coastal wetland ecosystem dynamics
- bioluminescence and chemiluminescence research
- Urban Agriculture and Sustainability
- Air Quality Monitoring and Forecasting
- Marine Biology and Environmental Chemistry
- Wastewater Treatment and Nitrogen Removal
- Environmental and Cultural Studies in Latin America and Beyond
- Carbon Dioxide Capture Technologies
- Soil and Water Nutrient Dynamics
- Climate change and permafrost
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
Linköping University
2020-2024
Institute of Environmental Engineering
2024
Warsaw University of Life Sciences
2024
Institute of Meteorology and Water Management
2024
University of Vienna
2013-2020
University of Łódź
2010
Significance Methane (CH 4 ) emissions from lakes are significant, yet still highly uncertain and a key bottleneck for understanding the global methane budget. Current lake flux estimates do not account diel variability of CH flux. Here, we apply high-resolution spatiotemporal measurement approach in multiple report extensive data on between day night emissions. Our results demonstrate clear consistent pattern with more than twofold higher daytime fluxes. We show that it is critical to...
Abstract The CO 2 flux () from lakes to the atmosphere is a large component of global carbon cycle and depends on air–water concentration gradient (ΔCO ) gas transfer velocity ( k ). Both ΔCO can vary multiple timescales understanding their contributions important for explaining variability in fluxes developing optimal sampling designs. We measured derived one full ice‐free period 18 using floating chambers estimated variability. Generally, contributed more than short‐term (1–9 d) With...
Headwater streams are tightly connected with the terrestrial milieu from which they receive deliveries of organic matter, often through hyporheic zone, transition between groundwater and streamwater. Dissolved matter (DOM) sources (that is, allochthonous) enters where it may mix DOM in situ production autochthonous) most microbial activity takes place. Allochthonous is typically considered resistant to metabolism compared autochthonous DOM. The composition functioning biofilm communities...
Abstract Lakes are generally supersaturated in carbon dioxide (CO 2 ) and emitters of CO to the atmosphere. However, estimates flux ( from lakes seldom based on direct measurements usually do not account for nighttime emissions, yielding risk biased assessments. Here, we present automated floating chambers collected every 2–3 hr spanning 115 24 periods three boreal during summer stratification before after autumn mixing most eutrophic lake these. We observed 40%–67% higher mean daytime...
River-floodplain systems are characterized by changing hydrological connectivity and variability of resources delivered to floodplain water bodies. Although the importance events has been recognized, effect flooding on CH4 concentrations emissions from European, human-impacted river-floodplains is largely unknown. This study evaluates aquatic a highly modified, yet partly restored river-floodplain system Danube near Vienna (Austria). We covered broad range conditions, including 1-yr flood...
Urban agriculture, as most can potentially contribute to eutrophication via losses ground and surface water. Few published studies have empirically measured nitrogen phosphorus (including leaching) from urban even fewer examined in real-world settings throughout the year. Here we investigated year-round (May 2020–2021) weekly leaching allotment gardens Linköping, southern Sweden. We installed eight lysimeters (8 plots) collected water 0.3 m below soil four (2 plots per garden), each with...
Large greenhouse gas emissions occur via the release of carbon dioxide (CO2) and methane (CH4) from surface layer lakes. Such are modeled air–water concentration gradient transfer velocity (k). The links between k physical properties water have led to development methods convert gases through Schmidt number normalization. However, recent observations found that such normalization apparent estimates field measurements can yield different results for CH4 CO2. We estimated CO2 gradients fluxes...
Spectroscopic techniques and extracellular enzyme activity measurements were combined with assessments of bacterial secondary production (BSP) to elucidate flood-pulse-linked differences in carbon (C) sources related microbial processes a river-floodplain system near Vienna (Austria). Surface connection the main channel significantly influenced quantity quality dissolved organic matter (DOM) floodplain backwaters. The highest values (DOC) chromophoric DOM (CDOM) observed during peak flood,...
Methane (CH 4 ) is an important component of the carbon (C) cycling in lakes. CH production enables sediments to be either reintroduced food web via oxidation or emitted as a greenhouse gas making lakes one largest natural sources atmospheric . Large stable isotopic fractionation during makes changes 13 C: 12 C ratio (δ C) powerful and widely used tool determine extent which lake oxidized, rather than emitted. This relies on correct δ values original sources, variability has rarely been...
Abstract Lakes contribute 9%–19% of global methane (CH 4 ) emissions to the atmosphere. Dissolved molecular oxygen (DO) in lakes can inhibit production CH and promote oxidation. DO is therefore often considered an important regulator from lakes. Presence or absence water above sediments affect by (a) influencing if be fueled most reactive organic matter top sediment layer rely on deeper less degradable matter, (b) enabling accumulation deep waters potentially large upon column turnover....
It is well recognized that river-floodplain systems contribute significantly to riverine ecosystem metabolism, and bacteria are key players in the aquatic organic carbon cycle, but surprisingly few studies have linked bacterial community composition (BCC), function quality these hydrologically highly dynamic habitats. We investigated BCC extracellular enzymatic activity (EEA) related dissolved algae composition, including impact of a major flood event one last remaining European semi-natural...
River-floodplain systems are susceptible to rapid hydrological events. Changing connectivity of the floodplain generates a broad range conditions, from lentic lotic. This creates mixture allochthonously and autochthonously derived dissolved organic matter (DOM). Autochthonous DOM, including photosynthetic extracellular release (PER), is an important source supporting bacterial secondary production (BSP). Nonetheless, no details available regarding microbial enzymatic activity (EEA) as...
Methane (CH4) emissions (FCH4) from northern freshwater lakes are not only significant but also highly variable in time and one driver suggested to be important is precipitation. Rain can have various, potentially large effects on FCH4 across multiple frames, verifying the impact of rain lake key understand both contemporary flux regulation, predict future related possible changes frequency intensity rainfall climate change. The main objective this study was assess short-term typically...
Abstract The demographic response of Daphnia longispina to the presence competitive filter‐feeder zebra mussel ( Dreissena polymorpha ) was examined in a ten‐day laboratory experiment. experiment carried out five replicates four treatments corresponding zooplankton and mussels presence/absence combinations. Our revealed negative influence on D. population growth, suggesting low recruitment caused by high mortality at juvenile stages. We observed smaller loss phytoplankton biomass than...
Mires are one of the systems, which highly affected by climate change. At same time, they main sources greenhouse gases (GHG) such as methane (CH4) and carbon dioxide (CO2). Considering that hydrological patterns remain major factors affecting these emissions likely to be change, GHG fluxes may altered well. Whereas majority studies focused on direct from peat or mire surface waters, less in known about processes groundwater flow especially relation transfer GHG-rich ecosystems. The...
Abrupt global warming poses threats to hydrological cycles and peatland ecosystem development. Northern peatlands, such as palsa mires, experience prompt degradation due disappearing ice cores caused by increasing air temperatures changes in precipitation patterns that induce the development of thicker snow covers insulating existing impair their Disappearing mires are experiencing subsidence, which turn is flattening topography changing hydration. What's more, shape position cause local...
<p>Lakes are responsible for substantial emissions of methane (CH<sub>4</sub>) to the atmosphere globally, but their contribution is poorly constrained and current estimates vary widely. One reasons this large uncertainty lies in practical challenges involved collecting CH<sub>4</sub> concentration flux data at suitable temporal spatial scales capture natural variability. Here, we present results an attempt account...
<p>Lakes are major global sources of atmospheric methane (CH<sub>4</sub>), representing an important greenhouse gas. Dissolved molecular Oxygen (DO) in lakes hinders production CH<sub>4</sub> while promoting oxidation. Consequently, it has been suggested as regulator emissions from lakes. Presence or absence DO at the sediment-water interface could therefore influence extent top sediment layers, and amount that is stored...
<p>Lakes emit CO<sub>2</sub> to the atmosphere at magnitudes significant for global carbon cycle, in form of diffusive CO<sub>2</sub> flux (F<sub>CO2</sub>). As direct F<sub>CO2</sub> measurements are time-consuming, F<sub>CO2</sub> is often estimated from air-water...