tl5c_veg_u6

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Identification_Information:
Citation:
Citation_Information:
Originator: Alaska Geobotany Center
Publication_Date: Unknown
Title: tl5c_veg_u6
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: \\137.229.50.172\geodata\arcticAtlasMaster.gdb
Description:
Abstract:
The Toolik Lake Grid map focuses on the south side of Toolik Lake. This areas is on of the principal intensive research areas at the Toolik Lake Field Station. It includes many experimental research sites where long-term observations and experiments are being conducted, including the greenhouse and snow-fence experimetns. The grid was constructed in 1989 to provide geographic referencing for experimental plots and to provide a sampling scheme for periodic measurements of snow, active layer and plant communities.
Sixty-five plant communities were recognized (minimum mapping unit approximately 2.5 m^2) in the field and were then grouped into the 24 units appearing on the map. The vegetation units are primarily at the plant-community level (compared to the physiognomic level for the maps of the Upper Kuparuk River Region and the Toolik Lake Area). The codes for the communities and their descriptions are as follows:
BARREN AREAS: 1. Barren: Unvegetated natural and anthropogenic barrens 2. Cetraria nigricans-Rhizocarpon geographicum: Lichen communities on rocks. Xeric blockfields, glacial erratics. 3. Festuca rubra; Salix alaxensis; Epilobium latifolium; Juncus biglumis-Luzula arctica: Partially revegetated areas. Gravel pads, river gravels and nonsorted circles.
MOIST GRAMINOID TUNDRA 4. Eriophorum vaginatum-Sphagnum; Carex bigelowii-Sphagnum: Tussock sedge, dwarf-shrub, moss tundra (tussock tundra, moist acidic tundra). Mesic to subhygric, acidic, shallow to moderate snow, stable. This unit is the zonal vegetation on fine-grained substrates with ice-rich permafrost. Some areas on steeper slopes with solifluction are dominated by Bigelow sedge (Carex bigelowii).
5. Carex bigelowii-Dryas integrifolia, typical subtype; Tomentypnum nitens-Carex bigelowii, Salix glauca subtype: Nontussock sedge, dwarf-shrub, moss tundra (moist nonacidic tundra). Mesic to subhygric, nonacidic (pH > 5.5), shallow to moderate snow. Solifluction areas and somewhat unstable slopes. Some south-facing slopes have scattered glaucous willow (Salix glauca).
6. Carex bigelowii-Dryas integrifolia, Equisetum arvense subtype; Tomentypnum nitens-Carex bigelowii, Carex aquatilis subtype: Nontussock sedge, prostrate dwarf-shrub, horsetail, moss tundra (wetter subtypes of moist nonacidic tundra, often with abundant horsetails). Mesic to subhygric, nonacidic, moderate snow. Seepage areas below snowbeds with abundant horsetails (Equisetum arvense) or aquatic sedge (C. aquatilis) in wetter areas.
7. Carex bigelowii-Dryas integrifolia, Cassiope tetragona subtype; or other miscellaneous graminoid plant communities, including Ranunculus pedatifidus-Poa glauca; Salix chamissonis-Carex podocarpa; Festuca altaica-Artemisia arctica; Poa glauca-Epilobium latifolium: Sedge, hemi-prostrate dwarf shrub, moss tundra (moist nonacidic tundra in snow accumulation areas). Mesic to subhygric, mostly nonacidic, moderate to deep snow. Inter-stripe areas in nonsorted stripe complexes on upper hill-slopes with moderate to deep snow and abundant Lapland heather (Cassiope tetragona). This unit also includes several miscellaneous graminoid, dwarf-shrub, forb communities that cover small areas, including animal dens, deep-snow stream and lake margins, dry snow accumulation areas and stream banks.
WET GRAMINOID TUNDRA AND WATER: 8. Tricophorum caespitosum-Tomentypnum nitens, Salix fuscescens-Sphagnum lenense, Carex aquatilis-Sphagnum warnstorfii: Sedge, prostrate dwarf-shrub, moss tundra. Hygric to subhydric. Hummocks, strangs and raised microsites in fens and poor fens in wet meadows and colluvial-basins and mossy colluvial basin margins.
9. Eriophorum angustifolium-Carex aquatilis, typical subtype, Carex chodorrhiza subtype, Drepanocladus revolvens subtype; Carex saxatilis-Carex aquatilis and Calliergon giganteum-Drepanocladus revolvens: Sedge, moss tundra in fens with flowing water. Subhydric to hydric. Lower microsites in colluvial basins, water tracks and stream margins, wet pools on solifluction slopes.
10. Unvegetated water: Hydric. Streams, lakes, ponds.
11. Sparganium hyperboreum-Hippuris vulgaris; Arctophila fulva: Herbaceous marsh. Hydric. Water to 1-m deep in lakes and ponds.
PROSTRATE- AND HEMI-PROSTRATE DWARF-SHRUB TUNDRA: 12. Arctous alpina-Hierochloë alpina, typical subtype, Salix phlebophylla subtype or Vaccinium vitis-idaea subtype: Prostrate dwarf-shrub, fruticose-lichen tundra. Xeric, acidic, shallow snow. Dry acidic tundra on well-drained glacial till, outwash and exposed sites.
13. Dryas octopetala-Selaginella sibirica, Dryas octopetala-Salix glauca: Prostrate dwarf-shrub, forb, fruticose-lichen tundra. Xeric, acidic, wind blown or shallow winter snow cover, stony or with considerable bare soil. Ridge crests, dry river terraces. Dominated by Dryas octopetala, occasionally with Salix glauca.
14. Dryas integrifolia-Oxytropis maydelliana: Prostrate dwarf-shrub, forb, fruticose-lichen tundra. Xeromesic to mesic, nonacidic, wind-blown to shallow winter snow cover. Dry slopes, river terraces, drier microsites in nonsorted stripe complexes, dominated by Dryas integrifolia.
15. Cassiope tetragona-Carex microchaeta, typical subtype, Salix glauca subtype: Hemi-prostrate dwarf-shrub, fruticose-lichen tundra. Subxeric to mesic, acidic, moderately deep snow. Acidic snowbeds (50-150 cm snow).
16. Cassiope tetragona-Calamagrostis inexpansa, typical subtype or Vaccinium vitis-idaea subtype; Cassiope tetragona-Racomitrium lanuginosum: Hemi-prostrate and prostrate dwarf-shrub, forb, moss, fruticose-lichen tundra. Subxeric to mesic, acidic, shallow to moderately deep snow (<1 m deep). Nonsorted stripe complexes with shallow to moderately deep snow.
17. Cassiope tetragona-Dryas integrifolia, typical subtype or Boykinia richardsonii subtype. Includes Salix rotundifolia-Sanionia uncinata: Hemi-prostrate dwarf-shrub, fruticose-lichen tundra. Subxeric to mesic, nonacidic, moderately deep snow. Nonacidic snowbeds (50-150 cm snow). Also includes deep (>3 m snow) well-drained snow-beds with Salix rotundifolia.
18. Betula nana-Hierochloë alpina, Vaccinium uliginosum-Arctous alpina; or Ledum palustre ssp. decumbens-Empetrum nigrum: Hemi-prostrate dwarf-shrub, fruticose-lichen tundra. Subxeric to mesic, acidic, moderately deep snow. Depressions on glacial till or outwash, warm snowbeds. Very low-growing hemi-prostrate dwarf-birch (Betula nana) or erect dwarf blueberry (Vaccinium uliginosum ssp. microphyllum) or Labrador tea (Ledum palustre ssp. decumbens).
ERECT-SHRUB TUNDRA: 19. Betula nana-Eriophorum vaginatum: Dwarf-shrub, sedge, moss tundra (shrubby tussock tundra dominated by dwarf birch, Betula nana). Mesic to subhygric, acidic, moderate snow. Lower slopes and water-track margins. Mostly on Itkillik I surfaces.
20. Salix pulchra-Carex bigelowii: Dwarf-shrub, sedge, moss tundra (shrubby tussock tundra dominated by diamond-leaf willow, Salix pulchra). Subhygric, moderate snow, lower slopes with solifluction.
21. Betula nana-Rubus chamaemorus, dwarf-shrub variant and Cladonia arbuscula variant: Dwarf-shrub, moss tundra dominated by dwarf birch (Betula nana). Subhygric to hygric, acidic, moderate to moderately deep snow. Upland water tracks, margins of water tracks and lower slope areas. Somewhat drier areas have abundant lichens.
22. Salix pulchra-Sphagnum warnstorfii: Dwarf-shrub or low-shrub tundra dominated by willows (Salix pulchra). Subhygric, acidic, moderate to moderately deep snow. Margins of upland water tracks, palsas and high-centered polygons.
23. Salix pulchra-Eriophorum angustifolium; or Salix pulchra-Calamagrostis canadensis: Low shrublands (generally 40-100 cm tall). Subhydric to mesic, moderate to deep snow. Deeper upland water tracks with flowing water or riparian areas along major streams.
24. Salix alaxensis or S. richardsonii (tall shrubs): Tall shrublands (> 2 m tall). Subhydric to mesic, nonacidic, moderate to deep snow. Stream margins dominated by tall willows, Salix alaxensis and/or S. richardsonii.
Purpose:
Vegetation map of the Toolik Lake research grid for use by various projects.
Supplemental_Information: Abstract information taken from printed map explanation box.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Currentness_Reference: Unknown
Status:
Progress: In work
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -149.622532
East_Bounding_Coordinate: -149.593013
North_Bounding_Coordinate: 68.626764
South_Bounding_Coordinate: 68.616895
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: biota
Theme_Keyword: environment
Theme:
Theme_Keyword_Thesaurus: Alaska Geobotany Center
Theme_Keyword: tl5c
Theme_Keyword: ITUM
Theme_Keyword: vegetation
Theme_Keyword: community
Theme_Keyword: tundra
Theme_Keyword: research grid
Theme_Keyword: LTER
Place:
Place_Keyword_Thesaurus: Alaska Geobotany Center
Place_Keyword: arctic
Place_Keyword: Alaska
Place_Keyword: northslope
Place_Keyword: Upper Kaparuk River region
Place_Keyword: Toolik Lake
Access_Constraints: Unknown
Use_Constraints:
Data provided by the Alaska Geobotany Center are copyright protected under the provisions of a Creative Commons Attribution-NonCommercial-ShareAlike License (<http://creativecommons.org/licenses/by-nc-sa/1.0/>). Materials may be freely downloaded, reprinted and redistributed for non-commercial use. Reproduction and redistribution of the materials on this web site, including derivative works, shall give credit to the Alaska Geobotany Center and remain subject to the above license. Any web pages that use this material shall contain a link pointing to the Alaska Geobotany Center home page (<http://www.geobotany.uaf.edu/>).
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Alaska Geobotany Center
Contact_Person: Hilmar A. Maier
Contact_Position: GIS and Remote Sensing Manager
Contact_Address:
Address_Type: physical address
Address: Alaska Geobotany Center
Address: Institute of Arctic Biology
Address: University of Alaska Fairbanks
City: Fairbanks
State_or_Province: AK
Postal_Code: 99775
Country: US
Contact_Voice_Telephone: +1.907.474.1540
Contact_Voice_Telephone: +1.907.474.2459
Contact_Voice_Telephone: +1.907.474.2460
Contact_Electronic_Mail_Address: hilmar.maier@alaska.edu
Contact_Instructions: <http://www.geobotany.org/>
Native_Data_Set_Environment:
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Data_Quality_Information:
Lineage:
Process_Step:
Process_Description: Dataset copied.
Process_Date: 20100129
Process_Time: 10415600
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
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SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 24
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Grid_Coordinate_System_Name: Universal Transverse Mercator
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UTM_Zone_Number: 6
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -147.000000
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False_Easting: 500000.000000
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Planar_Distance_Units: meters
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Entity_Type_Label: tl5c_veg_u6
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Attribute_Definition: Internal feature number.
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Attribute_Definition: Feature geometry.
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Attribute:
Attribute_Label: veg
Attribute_Definition: vegetation
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Enumerated_Domain_Value_Definition: Barren
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
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Enumerated_Domain_Value_Definition: Cetraria nigricans-Rhizocarpon geographicum
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition:
Festuca rubra (903); Salix alaxensis (904); Epilobium latifolium (905); Juncus biglumis-Luzula arctica (no code)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition:
Eriophorum vaginatum-Sphagnum (406,407); Carex bigelowii-Sphagnum (404, 405)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition:
Carex bigelowii-Dryas integrifolia, typical subtype (401, 403); Tomentypnum nitens-Carex bigelowii,
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition:
Carex bigelowii-Dryas integrifolia, Equisetum arvense subtype (402); Tomentypnum nitens-Carex bigelowii,
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 7
Enumerated_Domain_Value_Definition:
Carex bigelowii-Dryas integrifolia, Cassiope tetragona subtype (208); or other miscellaneous graminoid plant communities, including Ranunculus pedatifidus-Poa glauca (106); Salix chamissonis-Carex podocarpa (408); Festuca altaica-Artemisia arctica (412);
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Enumerated_Domain:
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Enumerated_Domain_Value_Definition:
Tricophorum caespitosum-Tomentypnum nitens (409), Salix fuscescens-Sphagnum lenense (411,508),
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 9
Enumerated_Domain_Value_Definition:
Eriophorum angustifolium-Carex aquatilis, typical subtype (501), Carex chodorrhiza subtype (502, 505),
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 10
Enumerated_Domain_Value_Definition: Unvegetated water (
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 11
Enumerated_Domain_Value_Definition:
Sparganium hyperboreum-Hippuris vulgaris (603, 604); Arctophila fulva (601)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 12
Enumerated_Domain_Value_Definition:
Arctous alpina-Hierochloë alpina, typical subtype (105), Salix phlebophylla subtype or
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 13
Enumerated_Domain_Value_Definition:
Dryas octopetala-Selaginella sibirica (101), Dryas octopetala-Salix glauca (102)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 14
Enumerated_Domain_Value_Definition: Dryas integrifolia-Oxytropis maydelliana
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 15
Enumerated_Domain_Value_Definition:
Cassiope tetragona-Carex microchaeta, typical subtype (202), Salix glauca subtype (203)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 16
Enumerated_Domain_Value_Definition:
Cassiope tetragona-Calamagrostis inexpansa, typical subtype (104) or Vaccinium vitis-idaea subtype (111); Cassiope tetragona-Racomitrium lanuginosum (112)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 17
Enumerated_Domain_Value_Definition:
Cassiope tetragona-Dryas integrifolia, typical subtype (113, 204, 205) or Boykinia richardsonii subtype (206). Includes Salix rotundifolia-Sanionia uncinata (207)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 18
Enumerated_Domain_Value_Definition:
Betula nana-Hierochloë alpina (302, 303), Vaccinium uliginosum-Arctous alpina (110); or Ledum palustre ssp. decumbens-Empetrum nigrum (201)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 19
Enumerated_Domain_Value_Definition: Betula nana-Eriophorum vaginatum
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 20
Enumerated_Domain_Value_Definition: Salix pulchra-Carex bigelowii (312, 325)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 21
Enumerated_Domain_Value_Definition:
Betula nana-Rubus chamaemorus, dwarf-shrub variant (306, 307) and Cladonia arbuscula variant (304)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 22
Enumerated_Domain_Value_Definition: Salix pulchra-Sphagnum warnstorfii (310, 311)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 23
Enumerated_Domain_Value_Definition:
Salix pulchra-Eriophorum angustifolium (314, 315, 318); or Salix pulchra-Calamagrostis canadensis (316)
Enumerated_Domain_Value_Definition_Source: AGC
Enumerated_Domain:
Enumerated_Domain_Value: 24
Enumerated_Domain_Value_Definition: Salix alaxensis (323, 324) or S. richardsonii (319)
Enumerated_Domain_Value_Definition_Source: AGC
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Alaska Geobotany Center
Contact_Person: Hilmar A. Maier
Contact_Position: GIS and Remote Sensing Manager
Contact_Address:
Address_Type: physical address
Address: Alaska Geobotany Center
Address: Institute of Arctic Biology
Address: University of Alaska Fairbanks
City: Fairbanks
State_or_Province: AK
Postal_Code: 99775
Country: US
Contact_Voice_Telephone: +1.907.474.1540
Contact_Voice_Telephone: +1.907.474.2459
Contact_Voice_Telephone: +1.907.474.2460
Contact_Electronic_Mail_Address: dataManager@geobotany.org
Contact_Instructions: <http://www.geobotany.org/>
Resource_Description: Downloadable Data
Distribution_Liability: Unknown
Metadata_Reference_Information:
Metadata_Date: 20100203
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Alaska Geobotany Center
Contact_Person: Gayle Neufeld
Contact_Position: GIS technician
Contact_Address:
Address_Type: physical address
Address: Alaska Geobotany Center
Address: Institute of Arctic Biology
Address: University of Alaska Fairbanks
City: Fairbanks
State_or_Province: AK
Postal_Code: 99775
Country: US
Contact_Voice_Telephone: +1.907.474.1540
Contact_Voice_Telephone: +1.907.474.2459
Contact_Voice_Telephone: +1.907.474.2460
Contact_Electronic_Mail_Address: dataManager@geobotany.org
Contact_Instructions: <http://www.geobotany.org/>
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Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Wed Feb 03 13:59:10 2010