Porewater δ13CDOC indicates variable extent of degradation in different talik layers of coastal Alaskan thermokarst lakes

• Published in: Biogeosciences
• Main Authors: Meisel, Ove H., Dean, Joshua F., Vonk, Jorien E., Wacker, Lukas, Reichart, Gert-Jan, Dolman, Han
• Format: Text
• Language: English
• Published: 2021
• Subjects: Arctic; Talik; permafrost; Thermokarst; Alaska
• Online Access: https://doi.org/10.5194/bg-18-2241-2021; https://bg.copernicus.org/articles/18/2241/2021/

Thermokarst lakes play an important role in permafrost environments by warming and insulating the underlying permafrost. As a result, thaw bulbs of unfrozen ground (taliks) are formed. Since these taliks remain perennially thawed, they are zones of increased degradation where microbial activity and...