{"status": "Complete", "organizations": [{"category": "Industry/Consultants", "logo_name": "3nw7r3t9l7_logomaxkadefoundation.jpg", "name": "Max Kade Foundation, Inc.", "description": "Max Kade Foundation promotes Germanic studies and transatlantic exchange related to German studies which encourage a positive relationship between German-speaking countries and the United States."}, {"category": "Federal", "logo_name": "6jc8g1ukz3_NSF.png", "name": "National Science Foundation", "description": "The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 \"to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense\u2026\""}, {"category": "Academic", "logo_name": "9trmurq3zu_agc_logo_144.gif", "name": "Alaska Geobotany Center", "description": null}], "links": [{"url": "http://geobotanical.portal.gina.alaska.edu/catalogs/10623-current-turboveg-data-dictionary-and-panarctic", "category": "Metadata", "display_text": "Current Turboveg Data Dictionary and Panarctic Species List (PASL)"}], "collections": [{"hidden": false, "name": "All Vegetation Plot Data", "description": "All Vegetation Plot Data"}, {"hidden": false, "name": "Dalton Highway Studies", "description": "Includes vegetation studies in Prudhoe Bay, Toolik Lake area, and Happy Valley as well as studies focused on willows, pingos, and frost boils."}], "description": "Arctic Vegetation Archive - Alaska:  Willow Vegetation Plots.\r\n\r\nThe riparian vegetation in arctic Alaska mainly consists of willow shrub communities that are functionally important components of arctic landscape ecosystems. Willow communities along a south-north transect from the Brooks Range to Prudhoe Bay were described by Schickhoff et al. (2002). Support for the project was provided by the Max Kade Foundation grant KADE-OCG 3088 to U. Schickhoff, by the U. S. National Science Foundation grant OPP-9400083 to M. D. Walker, and by the U. S. National Science Foundation grant 9908829 to D. A. Walker. Plots are primarily in the watersheds of Sagavanirktok River and Kuparuk River accessible from the Dalton Highway. \r\n\r\nEighty-five relev\u00e9s were subjectively located in three broad habitat types including: 1) tall willow shrub communities on floodplains, gravel bars and lower terraces as well as on upland montane stream banks (27 plots) (Epilobio-Salicetum alaxensis association, including two subassociations parnassietosum kotzebuei and polemonietosum acutiflori), 2) more or less open low willow shrub communities on the banks of upland tundra streams as well as upper terraces from about 950 m in elevation down to the coastal plain (35 plots) (Anemono-Salicetum richardsonii association, including two subassociations, lupinetosum arctici and salicetosum pulchrae), and 3) low willow shrub communities restricted to the most humid and acid banks of upland tundra streams in the Arctic foothills roughly between 400 and 800 m in elevation (23 plots) (Valeriano-Salicetum pulchrae with several variants).\r\n \r\nPlots were not permanently marked. Relev\u00e9 sizes were assessed according to the minimal area approach and varied between 60 square meters (low shrublands) and 100 square meters (tall shrublands). Species and environmental data (including soil physical variables and subjective site assessments) were collected in the field and soil samples were brought back to the lab for chemical analysis. Vegetation was classified according to the Braun-Blanquet approach, which resulted in the description of three associations and four subassociations published in Schickhoff et al. (2002). DCA ordinations were used to analyze vegetation-environment relationships.\r\n\r\n**References**\r\n\r\nSchickhoff, U., M. D. Walker and D. A. Walker. 2002. Riparian willow communities on the Arctic Slope of Alaska and their environmental relationships: A classification and ordination analysis. Phytocoenologia 32:145-204.\r\n", "end_date": "1997-08-17", "title": "AVA-AK: Willow Vegetation Plots (Schickhoff 2002)", "other_contacts": [{"phone": "", "name": "Alaska Geobotany Center (AGC)", "email": "uaf-agc@alaska.edu"}], "iso_topics": ["002", "007", "008"], "tags": ["willows", "Dalton Highway", "North Slope", "Alaska Arctic", "vegetation"], "bounds": [{"geom": "{\"type\":\"Point\",\"coordinates\":[-148.84963593751013,69.78859989954303]}", "type": "Attachment"}], "start_date": "1997-07-09", "regions": ["Alaska", "North Slope", "Arctic"], "other_agencies": "National Science Foundation, Alaska Geobotany Center", "data_types": [{"name": "Database", "description": null}, {"name": "Map", "description": null}], "archived_at": null, "primary_contacts": [{"phone": "", "name": "Udo Schickhoff", "email": "udo.schickhoff@uni-hamburg.de"}], "type": {"color": "#3a87ad", "name": "Data", "description": "catalog record for projects with associated data/observation files"}, "slug": "ava-ak-willow-vegetation-plots-schickhoff-2002", "attachments": [{"category": "Geojson", "file_name": "imported_locations", "description": "gLynx locations", "file_size": 158}, {"category": "Primary Thumbnail", "file_name": "aava_willows_schickhoff_2002_a_sitephoto_metadata.png", "description": "Willow Site Photo", "file_size": 904206}, {"category": "Public Download", "file_name": "aava_willow_uschickhoff_2002_readme_metadata.pdf", "description": "Willows Readme", "file_size": 26190}, {"category": "Public Download", "file_name": "aava_willow_uschickhoff_2002_alldata.zip", "description": "Willow Data: species and environmental (source and Turboveg), map, photos, publications, soils (chemical and physical), and metadata", "file_size": 7701688}, {"category": "Thumbnail", "file_name": "aava_willows_schickhoff_2002_pubpage_metatdata.jpg", "description": "Willow Publication Cover", "file_size": 338810}]}