Grasshopper Infestations In Wyoming (1944 - 1996)

Table of Contents



IDENTIFICATION_INFORMATION

Citation:
    Citation_Information:
      Originator: Scott Schell
      Originator: Jeffrey Lockwood
      Publication_Date: 19991119
      Title: Grasshopper Infestations In Wyoming (1944 - 1996)
      Edition: 1.0
      Geospatial_Data_Presentation_Form: Map
      Publication_Information:
        Publication_Place: Laramie, WY
        Publisher: University of Wyoming
      Other_Citation_Details:
      Online_Linkage: http://uwadmnweb.uwyo.edu/capsweb/thesis/thesis.htm
      Larger_Work_Citation:
        Citation_Information:
          Originator: Scott Schell
          Publication_Date: 1994
          Title: Spatial Analysis of Ecological Factors Related to
            Grasshopper (Orthoptera:Acrididae) Population Dynamics in Wyoming
          Publication_Information:
            Publication_Place: Laramie, WY
            Publisher: University of Wyoming
          Online_Linkage: HTTP://www.sdvc.uwyo.edu/grasshopper/thesis1.htm
  Description:
    Abstract:
      The Grasshopper Infestations In Wyoming (1944 - 1996) was
      created as part of Scott Schell's thesis work. The
      information was gathered from United States Department of
      Agriculture Animal and Plant Health Inspection Service
      Plant Protection Quarantine, USDA-APHIS-PPQ, and Wyoming
      Department of Agriculture, WDA, annual adult grasshopper survey.
    Purpose:
      To try to predict areas that are prone to grasshopper outbreaks.
    Supplemental_Information:
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: 1944
        Ending_Date: 1996
    Currentness_Reference: Publication Date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -111.3832
      East_Bounding_Coordinate: -103.3427
      North_Bounding_Coordinate: 45.2651
      South_Bounding_Coordinate: 40.8990
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: Spatial Analysis
      Theme_Keyword: Grasshoppers
      Theme_Keyword: Outbreak Dynamics
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: United States
      Place_Keyword: Wyoming
  Access_Constraints:
    None
  Use_Constraints:
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: University of Wyoming
        Contact_Person: Scott Schell
      Contact_Position: 
      Contact_Address:
        Address_Type: mailing and physical address
        Address: PO Box 3354 Dept. of Renewable Resources
        City: Laramie
        State_or_Province: WY
        Postal_Code: 82071
        Country: USA
      Contact_Voice_Telephone: 307-766-4260
      Contact_Facsimile_Telephone: 307-766-5025
      Contact_Electronic_Mail_Address: sschell@uwyo.edu
      Hours_of_Service: 
  Native_Data_Set_Environment:
    ESRI Grid format
    markov\grids\g44,g45,...,g96
 
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DATA_QUALITY_INFORMATION

Attribute_Accuracy:
    Attribute_Accuracy_Report:
  Logical_Consistency_Report:
  Completeness_Report:
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
    Vertical_Positional_Accuracy:
      Vertical_Positional_Accuracy_Report:
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: USDA-APHIS-PPQ
          Publication_Date: 
          Title: 
          Edition: 
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place:  Cheyenne, WY
            Publisher: 
          Other_Citation_Details:
          Online_Linkage: 
          Larger_Work_Citation:
            Citation_Information:
              Originator: 
              Publication_Date: 
              Title: 
              Publication_Information:
                Publication_Place: 
                Publisher: 
              Online_Linkage: 
      Source_Scale_Denominator: Unknown
      Type_of_Source_Media: Unknown
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1960
            Ending_Date: 1996
        Source_Currentness_Reference: Publication Date
      Source_Citation_Abbreviation: 
      Source_Contribution:
	Map areas of grasshopper densities were produced from
	subjective interpolation of point data generated from the
	results of roadside survey stops.  Twenty-five to fifty
	stops were made in each county with the number of stops
	depending on the size of the area with suitable grasshopper
	habitat (USDA-APHIS 1987).  The grasshopper population
	density at each survey stop was determined by APHIS
	personnel using 18 visualized square foot samples.
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: WDA
          Publication_Date: 
          Title: 
          Edition: 
          Geospatial_Data_Presentation_Form: map
          Publication_Information:
            Publication_Place: Cheyenne, WY
            Publisher: 
          Other_Citation_Details:
          Online_Linkage: 
          Larger_Work_Citation:
            Citation_Information:
              Originator: 
              Publication_Date: 
              Title: 
              Publication_Information:
                Publication_Place: 
                Publisher: 
              Online_Linkage: 
      Source_Scale_Denominator: Unknown
      Type_of_Source_Media: Unknown
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: 1944
            Ending_Date: 1959
        Source_Currentness_Reference: Publication Date
      Source_Citation_Abbreviation: 
      Source_Contribution:
        The method that was used by state personnel when they
        conducted the survey is believed to be similar to
        USDA-APHIS-PPQs, although no published methodology exists.
    Process_Step:
      Process_Description:
        Individual yearly survey maps were digitized and stored in
        a raster format using ERDAS, Inc. PC-VGA, version 7.5, GIS.
        Raster-based systems assign numeric class values to
        individual map areas, called grid cells, which make up the
        total map area (ERDAS 1991). The grid cell size chosen for
        this study was 1000 meters square. This size represents a
        compromise between the resolution of the data and the
        ability to represent vectors, such as roads and political
        borders. One thousand meters is a much finer resolution
        than the actual annual survey maps would allow since the
        yearly maps were hand-drawn with only county borders for
        reference marks. The accuracy of outbreak locations probably
        deteriorated as the interpolation proceeded from a county
        border to the interior of a county. However, 1000 m
        resolution is not an egregious overestimate of the accuracy
        of the data based on GIS position cross-checks. The
        position cross-checks were done by locating, on the
        displayed outbreak frequency map, established APHIS survey
        stops with known outbreak histories with the CURSES routine
        (ERDAS 1991) that gives coordinate location and the
        attributes of grid cells. The GIS map coordinate locations
        and grid cell attributes agreed with known APHIS data.
      Source_Used_Citation_Abbreviation: 
      Process_Date: 1994
      Source_Produced_Citation_Abbreviation: 
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Organization: University of Wyoming
            Contact_Person: Scott Schell
          Contact_Position: 
          Contact_Address:
            Address_Type: mailing and physical address
            Address: PO Box 3354 Dept. of Renewable Resources
            City: Laramie
            State_or_Province: WY
            Postal_Code: 82071
            Country: USA
          Contact_Voice_Telephone: 307-766-4260
          Contact_Facsimile_Telephone: 307-766-5025
          Contact_Electronic_Mail_Address: sschell@uwyo.edu
          Hours_of_Service: 

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SPATIAL_DATA_ORGANIZATION_INFORMATION

Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Grid Cell
    Row_Count: 484
    Column_Count: 631

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SPATIAL_REFERENCE_INFORMATION

Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Lambert Conformal Conic
        Lambert_Conformal_Conic:
          Standard_Parallel: 41.000000
          Standard_Parallel: 45.000000
          Longitude_of_Central_Meridian: -107.553800
          Latitude_of_Projection_Origin: 41.000000
          False_Easting: 0.000000
          False_Northing: 0.000000
          Standard_Parallel: 41.000000
          Standard_Parallel: 45.000000
          Longitude_of_Central_Meridian: -107.553800
          Latitude_of_Projection_Origin: 41.000000
          False_Easting: 0.000000
          False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: Row and column
        Coordinate_Representation:
          Abscissa_Resolution: 
          Ordinate_Resolution: 
        Planar_Distance_Units: Meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1927
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.4000000
      Denominator_of_Flattening_Ratio: 294.98

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ENTITY_AND_ATTRIBUTE_INFORMATION

Detailed_Description:
    Entity_Type:
      Entity_Type_Label: g44.vat
      Entity_Type_Definition: GRID Value Attribute Table
      Entity_Type_Definition_Source: None
    Attribute:
      Attribute_Label: Value
      Attribute_Definition: Pixel value
      Attribute_Definition_Source: Software generated
      Attribute_Domain_Values:
        Unrepresentable_Domain:
	  0 is < 9.6 grasshoppers/sq. yd.
	  1 is >= 9.6 grasshoppers/sq. yd.
    Attribute:
      Attribute_Label: Count
      Attribute_Definition: Number of pixel with same value
      Attribute_Definition_Source: Software generated
      Attribute_Domain_Values:
        Unrepresentable_Domain:
          Software computed
  Overview_Description:
    Entity_and_Attribute_Overview:
    Entity_and_Attribute_Detail_Citation:

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DISTRIBUTION_INFORMATION

Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: University of Wyoming
        Contact_Person: Scott Schell
      Contact_Position: 
      Contact_Address:
        Address_Type: mailing and physical address
        Address: PO Box 3354 Dept. of Renewable Resources
        City: Laramie
        State_or_Province: WY
        Postal_Code: 82071
        Country: USA
      Contact_Voice_Telephone: 307-766-4260
      Contact_Facsimile_Telephone: 307-766-5025
      Contact_Electronic_Mail_Address: sschell@uwyo.edu
      Hours_of_Service: 
  Resource_Description:
  Distribution_Liability:
    User must assume responsibility to determine the
    appropriate use of this data.
    The distributor shall not be held liable for improper or
    incorrect use of this data.
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name:
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: 
          Recording_Format: 
          Compatibility_Information:
    Fees: 
    Ordering_Instructions:

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METADATA_REFERENCE_INFORMATION

Metadata_Date: 20000218
  Metadata_Review_Date: 20000218
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: University of Wyoming
        Contact_Person: Scott Schell
      Contact_Position: 
      Contact_Address:
        Address_Type: Mailing and physical address
        Address: PO Box 3354 Dept. of Renewable Resources
        City: Laramie
        State_or_Province: WY
        Postal_Code: 82071
        Country: USA
      Contact_Voice_Telephone: 307-766-4260
      Contact_Facsimile_Telephone: 307-766-5025
      Contact_Electronic_Mail_Address: sschell@uwyo.edu
      Hours_of_Service: 
  Metadata_Standard_Name: FGDC CSDGM
  Metadata_Standard_Version: FGDC-STD-001-1998
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