Carsten J. Schubert
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View article: Controls on brGDGT Production in the Seasonally Anoxic Water Column and Sediments of Rotsee (Lake Rot)
Controls on brGDGT Production in the Seasonally Anoxic Water Column and Sediments of Rotsee (Lake Rot) Open
Reliable paleotemperature proxies are essential for reconstructing past climate. To refine interpretation of the MBT' 5ME index, based on bacterial brGDGT lipids, a year‐long study was conducted in Rotsee, Switzerland, a seasonally stratif…
View article: Nutritional effects on the expression of cryptic pigmentation in freshwater isopods
Nutritional effects on the expression of cryptic pigmentation in freshwater isopods Open
Cryptic pigmentation is a key phenotypic adaptation that helps many benthic invertebrates evade visual predators. However, little is known about whether and how the expression of pigmentation phenotypes that match the habitat background is…
View article: Methanogenesis by CO <sub>2</sub> reduction dominates lake sediments with different organic matter compositions
Methanogenesis by CO <sub>2</sub> reduction dominates lake sediments with different organic matter compositions Open
Microbial methane production is a key reaction involved in the terminal step of anaerobic degradation of organic matter. The energy substrates of methane-producing microorganisms are largely generated during the breakdown of larger organic…
View article: Evaluation of the net climate benefits of seagrass meadows at a regional scale
Evaluation of the net climate benefits of seagrass meadows at a regional scale Open
Coastal ecosystems like seagrass meadows play a crucial role in climate regulation by acting as blue carbon sinks with carbon burial rates up to 30–50 times higher than terrestrial forest soils. However, greenhouse gas (GHG) emissions, suc…
View article: Holocene environmental change in Rotsee and its impact on sedimentary carbon storage
Holocene environmental change in Rotsee and its impact on sedimentary carbon storage Open
To assess the long-term impact of climate change and human influence on lakes and their sedimentary carbon storage, paleo-environmental approaches using well-dated lake sediment cores can be employed. Here, we reconstruct carbon mass accum…
View article: Nutritional effects on the expression of cryptic pigmentation in freshwater isopods
Nutritional effects on the expression of cryptic pigmentation in freshwater isopods Open
Cryptic pigmentation is a key phenotypic adaptation that helps many invertebrates evade visual predators. However, little is known about whether and how the expression of pigmentation phenotypes that match the habitat background is influen…
View article: Influence of the hydrodynamic regime on nitrogen transformation processes in lacustrine sediments
Influence of the hydrodynamic regime on nitrogen transformation processes in lacustrine sediments Open
Vertical and temporal distribution of nitrogen transformation rates in two monomictic lake sediments. Rate process measurements were quantified from 15N-stable isotope addition experiments for Lakes Baldegg and Sarnen located in central Sw…
View article: Arctic fjord ecosystem adaptation to cryosphere meltdown over the past 14,000 years
Arctic fjord ecosystem adaptation to cryosphere meltdown over the past 14,000 years Open
The Arctic cryosphere is the epicentre of acute global change impact, with abrupt warming and amplification driving rapid sea ice decline and irreversible glacial ice loss. A key challenge is understanding how the cryosphere meltdown will …
View article: Innovative Approaches to Zostera Seagrass Meadow Restoration in the Arcachon Basin: Biomimetic Solutions for Hydrodynamic Control
Innovative Approaches to Zostera Seagrass Meadow Restoration in the Arcachon Basin: Biomimetic Solutions for Hydrodynamic Control Open
Seagrass meadows, especially those formed by Zostera species, are critical for coastal ecosystems, providing habitat, enhancing water quality, and stabilizing sediments. However, these meadows have dramatically declined in the Arcachon Bas…
View article: Seagrass and Macroalgae Imitations improve Marine Habitat Functions on the French Mediterranean coast
Seagrass and Macroalgae Imitations improve Marine Habitat Functions on the French Mediterranean coast Open
Seagrass meadows and macroalgal forests are known to create rich ecosystems, that provide numerous ecosystem services, for example food provisioning, carbon storage, and erosion control. The Mediterranean coast in France has undergone sign…
View article: Insights into seasonal dynamics of metalimnetic methane and hypolimnetic nitrous oxide in a deep Swiss alpine lake&#160;
Insights into seasonal dynamics of metalimnetic methane and hypolimnetic nitrous oxide in a deep Swiss alpine lake  Open
Methane (CH4) and nitrous oxide (N2O) are potent greenhouse gases (GHGs) and are involved in ozone depletion. They are the second and third most significant GHGs contributing to climate change, with global warming potentials approximately …
View article: Disentangling the impact of vegetation and hydroclimate dynamics on plant wax stable isotopes since the Younger Dryas in Central Switzerland
Disentangling the impact of vegetation and hydroclimate dynamics on plant wax stable isotopes since the Younger Dryas in Central Switzerland Open
The stable isotopic composition of plant waxes (δ13C and δ2H values) in lake sediments is a powerful tool for reconstructing past climates and environments, offering critical insights into hydroclimate variability and vegetation …
View article: Algal lipid distributions and hydrogen isotope ratios reflect phytoplankton community dynamics
Algal lipid distributions and hydrogen isotope ratios reflect phytoplankton community dynamics Open
Reconstructions of past changes in algal community composition provide important context for future alterations in biogeochemical cycling. However, many existing phytoplankton proxies are indicative of individual algal groups and are not f…
View article: Methanogenesis by CO <sub>2</sub> reduction dominates lake sediments with different organic matter compositions
Methanogenesis by CO <sub>2</sub> reduction dominates lake sediments with different organic matter compositions Open
Microbial methane production is a respiration reaction involved in the terminal step of anaerobic degradation of organic matter. Due to the dependency of methanogenic substrate production on fermentation reactions that produce different en…
View article: Algal lipid distributions and hydrogen isotope ratios reflect phytoplankton community dynamics
Algal lipid distributions and hydrogen isotope ratios reflect phytoplankton community dynamics Open
Reconstructions of past changes in algal community composition provide important context for future alterations in biogeochemical cycling. However, many existing phytoplankton proxies are indicative of individual algal groups and are not f…
View article: The effect of a short oxygen exposure period on algal biomass degradation and methane release from eutrophic and oligotrophic lake sediments
The effect of a short oxygen exposure period on algal biomass degradation and methane release from eutrophic and oligotrophic lake sediments Open
Algal blooms in lakes result in large amounts of labile carbon being transported down the water column towards the sediments, often resulting in temporary water column hypoxia. The algal biomass is deposited at the surface sediments, where…
View article: Impact of Glaciers on Trophic Dynamics and Polyunsaturated Fat Accumulation in Southern Greenland Fjord Ecosystems
Impact of Glaciers on Trophic Dynamics and Polyunsaturated Fat Accumulation in Southern Greenland Fjord Ecosystems Open
The primary production of fjords across the Arctic and Subarctic is undergoing significant transformations due to the climatically driven retreat of glaciers and ice sheets. However, the implications of these changes for upper trophic leve…
View article: Holocene environmental change in Rotsee and its impact on sedimentary carbon storage
Holocene environmental change in Rotsee and its impact on sedimentary carbon storage Open
To assess the long-term impact of climate change and human influence on lakes and their sedimentary carbon storage, paleo-environmental approaches using well-dated lake sediment cores can be employed. Here, we reconstruct carbon mass accum…
View article: Taxon-specific hydrogen isotope signals in cultures and mesocosms facilitate ecosystem and hydroclimate reconstruction
Taxon-specific hydrogen isotope signals in cultures and mesocosms facilitate ecosystem and hydroclimate reconstruction Open
Phytoplankton play a key role in biogeochemical cycles, impacting atmospheric and aquatic chemistry, food webs, and water quality. However, it remains challenging to reconstruct changes in algal community composition throughout the geologi…
View article: Controls on brGDGT distributions in the suspended particulate matter of the seasonally anoxic water column of Rotsee
Controls on brGDGT distributions in the suspended particulate matter of the seasonally anoxic water column of Rotsee Open
Developing reliable methods for quantifying past temperature changes is essential for understanding Earth's climate evolution and predicting future climatic shifts. The degree of methylation of branched tetraethers (MBT’5ME), of branched g…
View article: Long‐range transport of littoral methane explains the metalimnetic methane peak in a large lake
Long‐range transport of littoral methane explains the metalimnetic methane peak in a large lake Open
In large and stratified lakes, substantial methane stocks are often observed within the metalimnion. The origin of the methane (CH 4 ) accumulated in the metalimnion during stratification, which can sustain significant emissions during con…
View article: Glacial Meltwater Increases the Dependence on Marine Subsidies of Fish in Freshwater Ecosystems
Glacial Meltwater Increases the Dependence on Marine Subsidies of Fish in Freshwater Ecosystems Open
In a warming world, the input of glacier meltwater to inland water ecosystems is predicted to change, potentially affecting their productivity. Meta-ecosystem theory, which posits that the nutrient availability in the recipient ecosystem c…
View article: Quantifying the utilisation of blue, green and brown resources by riparian predators: A combined use of amino acid isotopes and fatty acids
Quantifying the utilisation of blue, green and brown resources by riparian predators: A combined use of amino acid isotopes and fatty acids Open
Global change drives multiple facets of biodiversity including interaction diversity, which is fundamental for ecosystem functioning. However, studying trophic interactions is challenging in meta‐ecosystems, that is ecosystems connected by…
View article: Impacts of temperature and fluid seepage on organic matter composition in sediments of an active hydrothermal basin
Impacts of temperature and fluid seepage on organic matter composition in sediments of an active hydrothermal basin Open
Marine sediments are one of the largest organic carbon (OC) sinks on Earth. Yet, major knowledge gaps remain in our understanding of sedimentary OC cycling, particularly regarding temperature-induced alteration processes of OC from differe…
View article: Persistent activity of aerobic methane-oxidizing bacteria in anoxic lake waters due to metabolic versatility
Persistent activity of aerobic methane-oxidizing bacteria in anoxic lake waters due to metabolic versatility Open
Lacustrine methane emissions are strongly mitigated by aerobic methane-oxidizing bacteria (MOB) that are typically most active at the oxic-anoxic interface. Although oxygen is required by the MOB for the first step of methane oxidation, th…
View article: Taxon-specific hydrogen isotope signals in cultures and mesocosms facilitate ecosystem and hydroclimate reconstruction
Taxon-specific hydrogen isotope signals in cultures and mesocosms facilitate ecosystem and hydroclimate reconstruction Open
Phytoplankton play a key role in biogeochemical cycles, impacting atmospheric and aquatic chemistry, food webs, and water quality. However, it remains challenging to reconstruct changes in algal community composition throughout the geologi…
View article: Dynamics of the virtual center of wind pressure: An approach for the estimation of wind turbine loads
Dynamics of the virtual center of wind pressure: An approach for the estimation of wind turbine loads Open
A new stochastic method for the reconstruction of time series of bending moments at the main shaft of a wind turbine is presented. The method is based on the characterization of the dynamics of the virtual center of wind pressure (CoWP). T…
View article: The effect of a short oxygen exposure period on algal biomass degradation and methane formation in eutrophic and oligotrophic lake sediments
The effect of a short oxygen exposure period on algal biomass degradation and methane formation in eutrophic and oligotrophic lake sediments Open
Eutrophication is suggested to enhance lacustrine methane emissions, due to enhanced sedimentary decomposition rates of algal biomass, and more frequent occurrence of water column anoxia. We investigated methane emissions from sediments or…