ak4m_subchem_aa

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Alaska Geobotany Center
Publication_Date:
REQUIRED: The date when the data set is published or otherwise made available for release.
Title: ak4m_subchem_aa
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
\\137.229.50.172\geodata\raster\arcticatlas\public_data\shapes\ak\ak4m_subchem_aa.shp
Description:
Abstract:
Differences in substrate chemistry have important effects on dominant plant communities. Some of the most important effects are related to soil pH, which governs the availability of essential plant nutrients. Soils in the circumneutral range (pH 5.5-7.2) are generally mineral rich, whereas the full suite of essential nutrients are often unavailable in acidic soils (pH < 5.5) or in soils associated with calcareous bedrock (pH > 7.2). Both extremes often have unique assemblages of endemic plant species. The substrate chemistry map was derived from a wide variety of available sources including soil, surficial geology, and bedrock geology maps, and from spectral patterns that could be recognized on the AVHRR base image.The pH values of the three categories were based on the field experience and hundreds of Arctic vegetation relevé plots sampled by D.A. Walker on the North Slope and Seward Peninsula of Alaska, in consultation with F.J.A. Daniëls (Greenland) and N.G. Moskalenko (Yamal and Gydan Peninsulas, Russia).
Carbonate substrates occur mostly in mountainous regions, while circumneutral substrates are mostly fine-grained loess occurring at lower elevations in foothills or plains.
Purpose:
Map of substrate chemistry in Arctic Alaska for use in various research projects.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 1993
Single_Date/Time:
Calendar_Date: 1995
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -180.000000
East_Bounding_Coordinate: 180.000000
North_Bounding_Coordinate: 71.386183
South_Bounding_Coordinate: 57.526632
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword:
REQUIRED: Common-use word or phrase used to describe the subject of the data set.
Theme_Keyword: Environment
Theme:
Theme_Keyword_Thesaurus: Alaska Geobotany Center
Theme_Keyword: tundra
Place:
Place_Keyword_Thesaurus: Alaska Geobotany Center
Place_Keyword: Arctic
Place_Keyword: Alaska
Place_Keyword: US
Access_Constraints: none
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: dataManager@geobotany.org
Contact_Instructions: <http://www.geobotany.org/>
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Data_Quality_Information:
Lineage:
Process_Step:
Process_Description: Dataset moved.
Source_Used_Citation_Abbreviation: G:\raster\arcticatlas\public_data\ak\ak4m_subchem_aa
Process_Date: 20100308
Process_Time: 13333600
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Standard_Parallel: 65.000000
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Altitude_Encoding_Method:
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Entity_and_Attribute_Information:
Detailed_Description:
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Entity_Type_Label: ak4m_subchem_aa
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
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Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
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Attribute:
Attribute_Label: CHEM
Attribute:
Attribute_Label: Shape_Leng
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
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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
Standard_Order_Process:
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Metadata_Reference_Information:
Metadata_Date: 20100308
Metadata_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: dataManager@geobotany.org
Contact_Instructions: <http://www.geobotany.org/>
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
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Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Mon Mar 08 13:50:38 2010