Stem Water Isotopes: Moist Acidic Tundra Snowfence, Toolik Lake Field Station, Alaska, June - August, 2016

• Main Author: Jespersen, Robert
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2021
• Subjects: Stem water isotopes; Arctic ecophysiology; Arctic; Betula nana; Eriophorum; Tundra; Alaska
• Online Access: https://dx.doi.org/10.18739/a2th8bp2w; https://arcticdata.io/catalog/view/doi:10.18739/A2TH8BP2W

Snow accumulation and retention patterns in the Arctic are undergoing rapid change, with consequences for critical ecosystem processes and climate feedbacks. We used a 22-year International Tundra Experiment (ITEX) snow manipulation experiment with increased and decreased winter snow treatments to quantify how winter snow depth affects leaf-level ecophysiology and plant use of snow meltwater. We coupled measurements of leaf-level gas exchange and leaf tissue chemistry (%N, %C, δ13C, and δ15N) with an analysis of stable isotopes (δ18O and δ2H) in active layer water, precipitation, and stem water. This dataset contains stem water isotopes (δ18O and δ2H) for four community dominants, Salix pulchra, Betula nana, Eriophorum vaginatum, and Ledum palustre.