The Effects of Temperature, Flooding, and Goose Feces Addition on Greenhouse Gas Emissions and Ammonification in Four High Latitude Soils. Yukon Delta National Wildlife Refuge, Alaska, 2022. ...

• Main Authors: Ross, Jenna, Leffler, Joshua
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2024
• Subjects: greenhouse gas emissions; biogeochemistry; wetland; herbivores; warming; flooding; microcosm; ammonification; Arctic; Yukon; Climate change; Kuskokwim; Tundra; Alaska
• Online Access: https://dx.doi.org/10.18739/a2dr2pb1g; https://arcticdata.io/catalog/view/doi:10.18739/A2DR2PB1G

The large carbon (C) stock of wetlands is vulnerable to climate change, especially in high latitudes that are warming at a disproportional rate. Likewise, low-lying Arctic areas will experience increased coastal flooding under climate change and sea-level rise, which may alter goose herbivory and fecal deposition patterns if geese are pushed inland. While temperature, flooding, and feces impact soil C emissions, their interactive effects have been rarely studied. Here, we explore the impact of these interactions on carbon dioxide (CO2) and methane (CH4) emissions and nitrogen (N) mineralization (ammonification) in soils collected from four plant communities in the Yukon-Kuskokwim (Y-K) Delta, a high latitude coastal wetland in western Alaska. Communities included a Grazing Lawn, which is intensely grazed and susceptible to flooding, a Lowland Wetland and an Upland Wetland that experience moderate grazing and frequent (Lowland) and less frequent (Upland) flooding, and a rarely grazed and flooded Tundra ...