Publications by authors named "Lena Hermesdorf"
Article Synopsis
- Climate change affects carbon pools in the Arctic tundra, and the study observed responses over nine years to increased snow depth and summer warming in West Greenland.
- Summer warming significantly boosted vegetation, particularly the shrub Betula nana, while snow addition negatively impacted this plant, and moss biomass also increased under warmer conditions.
- Results indicated that changes in rhizosphere soil characteristics were more pronounced than in bulk soil, with summer warming leading to increased organic carbon in the top soil layers, highlighting the complex interactions between plant growth and belowground carbon dynamics.
Increasing temperatures and winter precipitation can influence the carbon (C) exchange rates in arctic ecosystems. Feedbacks can be both positive and negative, but the net effects are unclear and expected to vary strongly across the Arctic. There is a lack of understanding of the combined effects of increased summer warming and winter precipitation on the C balance in these ecosystems.
View Article and Find Full Text PDFWildfire frequency and expanse in the Arctic have increased in recent years and are projected to increase further with changes in climatic conditions due to warmer and drier summers. Yet, there is a lack of knowledge about the impacts such events may have on the net greenhouse gas (GHG) balances in Arctic ecosystems. We investigated in situ effects of an experimental fire in 2017 on carbon dioxide (CO ), methane (CH ), and nitrous oxide (N O) surface fluxes in the most abundant tundra ecosystem in West Greenland in ambient and warmer conditions.
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