Publications by authors named "C Knoblauch"

Aim Of This Study: General internal medicine is a crucial element in healthcare systems. Understanding how many people are and will be working in this field is important to maintain and improve quality for patients in healthcare systems. This can provide a basis for political decisions.

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Introduction: Burnout and low job satisfaction are increasing among the General Internal Medicine (GIM) workforce. Whether part-time compared to full-time clinical employment is associated with better wellbeing, job satisfaction and health among hospitalists remains unclear.

Materials And Methods: We conducted an anonymized cross-sectional survey among board-certified general internists (i.

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Article Synopsis
  • Understanding methane emissions from thermokarst lakes is key to predicting the impacts of permafrost thaw on climate change, yet data from high-altitude areas is limited.
  • The study analyzed 120 thermokarst lakes across a 1100 km stretch of the Tibetan Plateau, finding significant CH emissions (13.4 mmol/m²/day) during the ice-free period.
  • The majority of these emissions (84%) come from ebullition primarily driven by the decomposition of young carbon, with a correlation observed between methanogenic gene abundance and methane flux.
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Thermokarst lagoons represent the transition state from a freshwater lacustrine to a marine environment, and receive little attention regarding their role for greenhouse gas production and release in Arctic permafrost landscapes. We studied the fate of methane (CH ) in sediments of a thermokarst lagoon in comparison to two thermokarst lakes on the Bykovsky Peninsula in northeastern Siberia through the analysis of sediment CH concentrations and isotopic signature, methane-cycling microbial taxa, sediment geochemistry, lipid biomarkers, and network analysis. We assessed how differences in geochemistry between thermokarst lakes and thermokarst lagoons, caused by the infiltration of sulfate-rich marine water, altered the microbial methane-cycling community.

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The physical and chemical changes that accompany permafrost thaw directly influence the microbial communities that mediate the decomposition of formerly frozen organic matter, leading to uncertainty in permafrost-climate feedbacks. Although changes to microbial metabolism and community structure are documented following thaw, the generality of post-thaw assembly patterns across permafrost soils of the world remains uncertain, limiting our ability to predict biogeochemistry and microbial community responses to climate change. Based on our review of the Arctic microbiome, permafrost microbiology, and community ecology, we propose that Assembly Theory provides a framework to better understand thaw-mediated microbiome changes and the implications for community function and climate feedbacks.

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