Leaf-level gas exchange, Moist acidic tundra snowfence, Toolik Lake Field Station, Alaska, 2016

• Main Author: Jespersen, Robert
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2021
• Subjects: Photosynthesis; Conductance; Ecophysiology; Arctic; Betula nana; Eriophorum; Tundra; Alaska
• Online Access: https://dx.doi.org/10.18739/a2z892g5j; https://arcticdata.io/catalog/view/doi:10.18739/A2Z892G5J

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 is the leaf-level gas exchange dataset for four community dominants, Salix pulchra, Betula nana, Eriophorum vaginatum, and Ledum palustre.