Vegetation Warming Experiment: 15N Uptake Experiment Arctagrostis latifolia Root Traits, Utqiagvik (Barrow), Alaska, 2018 ...

• Main Authors: Salmon, Verity, Childs, Joanne, Iversen, Colleen, Spencer, Breann, Rogers, Alistair, Ely, Kim, Serbin, Shawn
• Format: Dataset
• Language: English
• Published: Next Generation Ecosystems Experiment - Arctic, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US) 2021
• Subjects: 54 ENVIRONMENTAL SCIENCES; rhizome biomass; EARTH SCIENCE > BIOSPHERE > VEGETATION; Barrow Environmental Observatory BEO, Alaska; Utqiagvik, Alaska; fine root biomass; EARTH SCIENCE > LAND SURFACE > SOILS > CARBON; EARTH SCIENCE > LAND SURFACE > SOILS > NITROGEN; EARTH SCIENCE > BIOSPHERE > VEGETATION > BIOMASS; Arctagrostis latifolia; Barrow; Tundra; Alaska
• Online Access: https://dx.doi.org/10.5440/1784749; https://www.osti.gov/servlets/purl/1784749/

This dataset consists of measured A. latifolia root traits (specific root length (SRL), mass, length, C and N content) from vegetation warming experiment enclosures and paired control plots located on the BEO, Utqiagvik, Alaska. Vegetation warming chambers (Zero Power) were deployed on the Barrow Environmental Observatory (BEO), Utqiagvik, Alaska. These chambers (Figure 1) consistently elevated air temperatures by approximately 4°C using a self-venting system described by Lewin et al (2017). Five chambers were deployed from June 17, 2018 to September 24, 2018 on the BEO within a 1 km2 area centered on 71.275N, -156.641W. Each chamber was co-located with an ambient plot where temperatures were not manipulated on patches of tundra containing the target species Arctagrostis latifolia. An intensive field campaign in late July investigated the impact of warming had on A. latifolia biomass, chemistry, and uptake of 15N labeled ammonia that was injected into the surface soils for one week. Initial measurements were ...