Search Results - "Knorr, K. H."

DOC-dynamics in a small headwater catchment as driven by redox fluctuations and hydrological flow paths – are DOC exports mediated by iron reduction/oxidation cycles? by Knorr, K.-H

“…Dissolved organic carbon (DOC) exports from many catchments in Europe and North-America are steadily increasing. Several studies have sought to explain this…”
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Comparison of different methods to determine the degree of peat decomposition in peat bogs by Biester, H, Knorr, K.-H, Schellekens, J, Basler, A, Hermanns, Y.-M

“…Peat humification or decomposition is a frequently used proxy to extract past time changes in hydrology and climate from peat bogs. During the past century…”
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Concentrations and fluxes of dissolved organic carbon in runoff from a forested catchment: insights from high frequency measurements by Strohmeier, S, Knorr, K.-H, Reichert, M, Frei, S, Fleckenstein, J. H, Peiffer, S, Matzner, E

“…Concentrations of dissolved organic carbon (DOC) in runoff from catchments are often subject to substantial short-term variations. The aim of this study was to…”
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Peat decomposition records in three pristine ombrotrophic bogs in southern Patagonia by Broder, T, Blodau, C, Biester, H, Knorr, K. H

“…Ombrotrophic bogs in southern Patagonia have been examined with regard to paleoclimatic and geochemical research questions but knowledge about organic matter…”
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Belowground in situ redox dynamics and methanogenesis recovery in a degraded fen during dry-wet cycles and flooding by Estop-Aragonés, C, Knorr, K.-H, Blodau, C

“…Climate change induced drying and flooding may alter the redox conditions of organic matter decomposition in peat soils. The seasonal and intermittent changes…”
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Surface micro-topography causes hot spots of biogeochemical activity in wetland systems: A virtual modeling experiment by Frei, S., Knorr, K. H., Peiffer, S., Fleckenstein, J. H.

“…Wetlands provide important ecohydrological services by regulating fluxes of nutrients and pollutants to receiving waters, which can in turn mitigate adverse…”
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Colloid-associated export of arsenic in stream water during stormflow events by Neubauer, E., von der Kammer, F., Knorr, K.-H., Peiffer, S., Reichert, M., Hofmann, T.

“…Significant correlations between arsenic concentrations and those of iron and natural organic matter (NOM) have been found in run-off from wetlands. This has…”
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Relationships between Vegetation Succession, Pore Water Chemistry and CH4 and CO2 Production in a Transitional Mire of Western Siberia (Tyumen Oblast) by Wertebach, T.-M., Knorr, K.-H., Lordieck, M., Tretiakov, N., Blodau, C., Hölzel, N., Kleinebecker, T.

“…We present data on a transitional mire in South-Western Siberia that evolved from early thermokarst lake succession. The vegetation of the mire shows a…”
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Sea spray, trace elements, and decomposition patterns as possible constraints on the evolution of CH₄ and CO₂ concentrations and isotopic signatures in oceanic ombrotrophic bogs by Broder, T., Blodau, C., Biester, H., Knorr, K. H.

“…Ombrotrophic, oceanic bogs in southern Patagonia have not yet been studied with respect to ongoing belowground organic matter decomposition. To obtain such…”
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Plant-mediated CH4 transport and contribution of photosynthates to methanogenesis at a boreal mire: a 14C pulse-labeling study by Dorodnikov, M, Knorr, K.-H, Kuzyakov, Y, Wilmking, M

“…Plant-mediated methane (CH4 ) transport and the contribution of recent photosynthates to methanogenesis were studied on two dominating vascular plant species -…”
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Experimentally Altered Groundwater Inflow Remobilizes Acidity from Sediments of an Iron Rich and Acidic Lake by Knorr, Klaus-Holger, Blodau, Christian

“…To study the impact of changes in groundwater flow and chemistry on acidity export from sediments in acid mine drainage (AMD) polluted lakes, a column…”
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Temporal patterns and drivers of CO2 emission from dry sediments in a groyne field of a large river by Koschorreck, Matthias, Knorr, Klaus Holger, Teichert, Lelaina

“…River sediments falling dry at low water levels are sources of CO2 to the atmosphere. While the general relevance of CO2 emissions from dry sediments has been…”
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Changes in dissolved organic matter quality in a peatland and forest headwater stream as a function of seasonality and hydrologic conditions by Broder, Tanja, Knorr, Klaus-Holger, Biester, Harald

“…Peatlands and peaty riparian zones are major sources of dissolved organic matter (DOM), but are poorly understood in terms of export dynamics and controls…”
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Organic matter and sediment properties determine in-lake variability of sediment CO2 and CH4 production and emissions of a small and shallow lake by Leandra Stephanie Emilia Praetzel, Plenter, Nora, Schilling, Sabrina, Schmiedeskamp, Marcel, Broll, Gabriele, Klaus-Holger Knorr

“…Inland waters, particularly small and shallow lakes, are significant sources of carbon dioxide (CO2) and methane (CH4) to the atmosphere. However, the spatial…”
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Patterns and drivers of organic matter decomposition in peatland open-water pools by Arsenault, Julien, Talbot, Julie, Moore, Tim R, Knorr, Klaus-Holger, Teickner, Henning, Lapierre, Jean-François

“…Peatland pools are unvegetated, inundated depressions that cover up to 30 % of the surface of many temperate and boreal peatlands and that are net carbon (C)…”
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Duration of extraction determines CO2 and CH4 emissions from an actively extracted peatland in eastern Quebec, Canada by Clark, Laura, Strachan, Ian B, Strack, Maria, Roulet, Nigel T, Klaus-Holger Knorr, Teickner, Henning

“…Draining and extracting peat alters the conditions that control CO2 and CH4 emissions. Carbon (C) emissions from peatlands undergoing horticultural peat…”
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High peatland methane emissions following permafrost thaw: enhanced acetoclastic methanogenesis during early successional stages by Heffernan, Liam, Cavaco, Maria A, Bhatia, Maya P, Estop-Aragonés, Cristian, Knorr, Klaus-Holger, Olefeldt, David

“…Permafrost thaw in northern peatlands often leads to increased methane (CH4) emissions, but the underlying controls responsible for increased emissions and the…”
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Fire in lichen-rich subarctic tundra changes carbon and nitrogen cycling between ecosystem compartments but has minor effects on stocks by Heim, Ramona J, Yurtaev, Andrey, Bucharova, Anna, Heim, Wieland, Kutskir, Valeriya, Knorr, Klaus-Holger, Lampei, Christian, Pechkin, Alexandr, Schilling, Dora, Sulkarnaev, Farid, Hölzel, Norbert

“…Fires are predicted to increase in Arctic regions due to ongoing climate change. Tundra fires can alter carbon and nutrient cycling and release a substantial…”
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Improving models to predict holocellulose and Klason lignin contents for peat soil organic matter with mid-infrared spectra by Teickner, Henning, Knorr, Klaus-Holger

“…To understand global soil organic matter (SOM) chemistry and its dynamics, we need tools to efficiently quantify SOM properties, for example, prediction models…”
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Comparison of paleobotanical and biomarker records of mountain peatland and forest ecosystem dynamics over the last 2600 years in central Germany by Thomas, Carrie L, Jansen, Boris, CzerwiÅski, Sambor, Galka, Mariusz, Knorr, Klaus-Holger, van Loon, E. Emiel, Egli, Markus, Wiesenberg, Guido L. B

“…As peatlands are a major terrestrial sink in the global carbon cycle, gaining an understanding of their development and changes throughout time is essential in…”
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