Toolik Lake E. Vaginatum Root Mineral Nutrition [Welker, J. and J. Fahnestock] https://data.eol.ucar.edu/dataset/46.765 Summary Soil cores of 5cm diameter and 20cm depth were taken at approximately 2 week intervals during the 2001 growing season. Three age classes of Eriophorum vaginatum roots (gray (senesced), brown (suberized) and white (active)) were extracted from the cores. Following extraction, cores were cut into 5 4cm sections and sorted for roots within 1 week of extraction. Prior to processing, cores were refrigerated at ~5(C. Some root samples were unwashed, then dried at 70(C for 48 hours prior to coupled combustion/reduction and gas chromatography analysis (CHN-1000, LECO Corporation). Additional samples were washed, and some unwashed, then analyzed using the soil-corrected method (Hunt et al., 1999). Unwashed roots were presumed to retain nutrient characteristics of the rhizoplane. Soil-corrected washed and unwashed root analysis was presumed to estimate nutrient concentrations specifically in the roots, provided a check upon the potential error associated with different degrees of washing and allow for correction of unwashed combustion/reduction and gas chromatography analyzed roots. Identifiers * Local archive identifier: 46.765 * doi:10.5065/D6HM56M7 https://doi.org/10.5065/D6HM56M7 Versions 1.0 Citation Welker, J., Fahnestock, J. 2007. Toolik Lake E. Vaginatum Root Mineral Nutrition. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6HM56M7 Accessed 26 Apr 2024. Additional citation styles can be generated by entering the DOI at CrossCite (https://citation.crosscite.org/). Acknowledgement In addition to the citation reference and any other acknowledgements, please acknowledge NCAR/EOL in your publications with text such as: Data provided by NCAR/EOL under the sponsorship of the National Science Foundation. https://data.eol.ucar.edu/ Related projects * ITEX: International Tundra Experiment https://data.eol.ucar.edu/project/ITEX * ATLAS: Arctic Transitions in the Land-Atmosphere System https://data.eol.ucar.edu/project/ATLAS Additional information * Spatial Type: point * Frequency: weekly * Language: English Grant Code 019643 ISO Topic Categories * climatologyMeteorologyAtmosphere Categories * Arctic * Ecology * Sub-Surface * Vegetation Platforms * Field Surveys Instruments * Coring Devices Sites * Toolik GCMD Science Keywords * EARTH SCIENCE > LAND SURFACE > SOILS > NITROGEN * EARTH SCIENCE > LAND SURFACE > SOILS > CARBON Documentation * E_vaginatum_root_min_nut.readme [2 KiB] https://data.eol.ucar.edu/file/download/4153B6D2/E_vaginatum_root_min_nut.readme Related links * info: ATLAS Data Policy https://data.eol.ucar.edu/arctic_projects/atlas/ATLAS_DM_Plan.html * homepage: ITEX EOL Homepage https://www.eol.ucar.edu/field_projects/itex * homepage: EOL ATLAS website https://www.eol.ucar.edu/field_projects/atlas Temporal coverage * Begin datetime: 2001-06-11 00:00:00 * End datetime: 2001-06-27 23:59:59 Spatial coverage * Maximum (North) Latitude: 68.63 * Minimum (South) Latitude: 68.63 * Minimum (West) Longitude: -149.60 * Maximum (East) Longitude: -149.60 Primary contact information * pointOfContact: Jeff M. Welker https://data.eol.ucar.edu/contact/show/257 Additional contact information * author: Jeff M. Welker https://data.eol.ucar.edu/contact/show/257 * author: Jace Fahnestock https://data.eol.ucar.edu/contact/show/1137 * principalInvestigator: Jeff M. Welker https://data.eol.ucar.edu/contact/show/257 * principalInvestigator: Jace Fahnestock https://data.eol.ucar.edu/contact/show/1137 Alternate metadata formats * DataCite: https://data.eol.ucar.edu/dataset/46.765?format=datacite * ISO/TC 211: https://data.eol.ucar.edu/dataset/46.765?format=isotc211