Investigating ten years of warming and enhanced snow depth on nutrient availability and greenhouse gas fluxes in a High Arctic ecosystem ...
Arctic warming and changing precipitation patterns are altering soil nutrient availability and other processes that control the greenhouse gas balance of high-latitude ecosystems. Changes to these biogeochemical processes will ultimately determine whether the Arctic will enhance or dampen future cli...
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| Format: | Text |
| Language: | unknown |
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Taylor & Francis
2023
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| Online Access: | https://dx.doi.org/10.6084/m9.figshare.22317501 https://tandf.figshare.com/articles/journal_contribution/Investigating_ten_years_of_warming_and_enhanced_snow_depth_on_nutrient_availability_and_greenhouse_gas_fluxes_in_a_High_Arctic_ecosystem/22317501 |
| Summary: | Arctic warming and changing precipitation patterns are altering soil nutrient availability and other processes that control the greenhouse gas balance of high-latitude ecosystems. Changes to these biogeochemical processes will ultimately determine whether the Arctic will enhance or dampen future climate change. At the Cape Bounty Arctic Watershed Observatory, a full-factorial International Tundra Experiment site was established in 2008, allowing for the investigation of ten years of experimental warming and increased snow depth on nutrient availability and trace gas exchange in a mesic heath tundra across two growing seasons (2017 and 2018). Plots with open-top chambers (OTCs) had drier soils ( p < .1) that released 1.5 times more carbon dioxide ( p < .05), and this effect was enhanced in the drier growing season. Increased snow depth delayed the onset of thaw and active layer development ( p < .1) and corresponded with greater nitrous oxide release ( p < .05). Our results suggest that decreases ... |
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