Biological rarity index and probability value - 40 acre grid

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Michigan Natural Features Inventory
Publication_Date: 20060331
Title: Biological rarity index and probability value - 40 acre grid
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
Two models, a probability model and a biological rarity index model, are provided in this dataset. Both models are based on the Michigan Natural Features Inventory (MNFI) database of known sightings of threatened, endangered, or special concern species and high quality natural communities. The model values are reported on a 40 acre polygon grid for the state of Michigan, or a subset of MI.
Purpose:
The probability value is designed to highlight those areas with known occurrences of rare species or high quality natural communities. The biological rarity index is designed to help prioritize the known occurrence areas for conservation.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1837
Ending_Date: 2005-08-11
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -90.556841
East_Bounding_Coordinate: -82.070314
North_Bounding_Coordinate: 48.284132
South_Bounding_Coordinate: 41.632100
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: biodiversity
Theme_Keyword: conservation
Theme_Keyword: Michigan
Theme_Keyword: rare species
Access_Constraints: None.
Use_Constraints:
These data are to be viewed and interpreted at a regional or county level scale. MNFI is not responsible for improper use of these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Edward Schools
Contact_Organization: Michigan Natural Features Inventory
Contact_Position: Conservation and GIS Manager
Contact_Address:
Address_Type: mailing address
Address: PO Box 30444
City: Lansing
State_or_Province: MI
Postal_Code: 48909
Contact_Voice_Telephone: 517-373-0798
Contact_Electronic_Mail_Address: schoolse@michigan.gov
Data_Set_Credit:
Michigan Natural Features Inventory, Michigan State University Extension.
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722
Cross_Reference:
Citation_Information:
Originator: Schools, E.H. and H. Enander, MNFI
Publication_Date: 2002
Title:
Preparing Sensitive Species Information for Land Use Master Planning
Geospatial_Data_Presentation_Form: document
Other_Citation_Details: Michigan Natural Features White Paper.
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribute values are generated by the model parameters, and are accurate based on the best available data. Errors may have propagated due to land cover classification errors, species' location errors, and habitat group generalizations.
Logical_Consistency_Report: Polygons were checked for closure; each polygon has one label.
Completeness_Report:
Includes 40 acre blocks that are within or intersect the 1:24,000 boundary of Michigan, or a subset of MI.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Michigan Natural Features Inventory
Publication_Date: Unpublished Material
Title: MNFI Biotics Database
Geospatial_Data_Presentation_Form: vector digital data
Other_Citation_Details: <http://web4.msue.msu.edu/mnfi/>
Source_Scale_Denominator: 24000
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1837
Ending_Date: 2005-08-11
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: MNFI database
Source_Contribution:
Locations of rare species and high quality natural communities for Michigan
Source_Information:
Source_Citation:
Citation_Information:
Originator: Michigan Department of Natural Resources (MDNR).
Publication_Date: 2003
Title:
Integrated Forest Monitoring Assessment and Prescription (IFMAP) / GAP Landuse/Landcover
Edition: Version 1
Geospatial_Data_Presentation_Form: raster digital data
Other_Citation_Details:
This version was updated from the 2001 data that is on <http://www.mcgi.state.mi.us/mgdl/?rel=thext&action=thmname&cid=5&cat=Land+Cover+2001>.
Source_Scale_Denominator: 100000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: IFMAP
Source_Contribution:
Land cover information used in creating predicted habitat layers for the sensitive species.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Helen Enander, MNFI
Publication_Date: Unpublished Material
Title: Forty acre grid of Michigan
Geospatial_Data_Presentation_Form: vector digital data
Source_Scale_Denominator: NA
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2005-8-11
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: grid40
Source_Contribution: spatial representation of model values
Source_Information:
Source_Citation:
Citation_Information:
Originator: Michigan Center for Geographic Information
Publication_Date: 20030908
Title: MI Geographic Framework Hydrography (v3b)
Edition: 3b
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
<http://www.mcgi.state.mi.us/mgdl/?rel=thext&action=thmname&cid=3&cat=MI+Geographic+Framework+Hydrography+%28v3b%29>
Source_Scale_Denominator: 24000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20030908
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: streams
Source_Contribution:
Used in creating potential habitat layers for the sensitive species.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Michigan Center for Geographic Information
Publication_Date: 20030924
Title: Michigan Geographic Framework Railroads
Edition: 3b
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
<http://www.mcgi.state.mi.us/mgdl/?rel=thext&action=thmname&cid=14&cat=Geographic+Framework+Railroads+%28v3b%29>
Source_Scale_Denominator: 24000
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20030924
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: rail
Source_Contribution:
Used in creating predicted habitat layers for the sensitive species.
Process_Step:
Process_Description:
The first step in the biodiversity and probability models is to group species into general habitat classes. The habitat classes are spatially represented using landcover data, stream lines, and rail corridors. These habitat layers are used to redefine the spatial extent of the rare species locations. Natural community locations are not subset by habitat, because all the communities have a defined spatial extent.
Source_Used_Citation_Abbreviation: Biotics Database
Source_Used_Citation_Abbreviation: IFMAP
Source_Used_Citation_Abbreviation: rail
Source_Used_Citation_Abbreviation: streams
Process_Date: 2005-08-15
Source_Produced_Citation_Abbreviation: Occurrence habitat layer
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Helen Enander
Contact_Organization: MNFI
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: PO Box 30444
City: Lansing
State_or_Province: MI
Postal_Code: 48909
Contact_Voice_Telephone: 517-373-2073
Process_Step:
Process_Description:
Each occurrence is assigned a value based on the age of the record. This value is used to represent the probability that the occurrence still exists. Occurrences with a last observed date of no later than 1982 are assigned a value of one, occurrences between 1970 and 1982 are assigned a value of 0.5, and occurrences prior to 1972 are assigned a value of 0.25. All natural community records are assigned a value of one.

Each occurrence is also assigned three other values, one based on the species global status, one based on the species State status, and one based on the occurrence quality rank. The greater the threat of imperilment to the species, the higher the value assigned to the occurrence. In a similar vein, the higher the quality of each occurrence, the higher its assigned value. The rarity index value of each occurrence is then calculated by adding the values for the global status, state status, and the quality ranking, and then multiplying the sum by the probability value.

Source_Used_Citation_Abbreviation: Occurrence habitat layer
Process_Date: 2005-08-11
Source_Produced_Citation_Abbreviation: rarity index
Source_Produced_Citation_Abbreviation: probability value
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Helen Enander
Contact_Organization: MNFI
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: PO Box 30444
City: Lansing
State_or_Province: MI
Postal_Code: 48909
Contact_Voice_Telephone: 517-373-2073
Contact_Electronic_Mail_Address: enanderh@michigan.gov
Process_Step:
Process_Description:
To create the probability value for the 40 acre grid, all records in the grid are selected and assigned a "No Status" value. Next the records in the species database with the lowest probability of still existing (value = 0.25) are selected. The 40 acre grid is intersected with the species database and the selected grid records are assigned a value of "Low." Next those records with a moderate likelihood of still existing are selected (value = 0.5). The grid layer is intersected with the species database and the selected grid records are assigned a value of "Moderate." Finally the records in the species database with the highest probability of continued existance (value = 1) are selected. The grid data set is intersected with the species database and the selected sections records are assigned a value of "High." Performing the selections and intersections in this order insures that a higher probability in any section feature will override a lower probability.

To calculate the rarity index value of a given section, all the species occurrences intersecting the section are selected. The rarity index values of the selected species occurrences are summed and attributed to that grid location. The result is a rarity index value for each 40 acre block that is the sum of rarity index values of all occurrences falling within the block.

Source_Used_Citation_Abbreviation: rarity index
Source_Used_Citation_Abbreviation: probability value
Source_Used_Citation_Abbreviation: grid40
Process_Date: 2005-08-15
Source_Produced_Citation_Abbreviation: final layer
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Helen Enander
Contact_Organization: Michigan Natural Features Inventory
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: PO Box 30444
City: Lansing
State_or_Province: MI
Postal_Code: 48909
Contact_Voice_Telephone: 517-373-2073
Contact_Electronic_Mail_Address: enanderh@michigan.gov
Cloud_Cover: NA
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 957462
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Oblique Mercator
Oblique_Mercator:
Scale_Factor_at_Center_Line: 0.999600
Oblique_Line_Azimuth:
Azimuthal_Angle: 337.255556
Azimuth_Measure_Point_Longitude: -86.000000
Latitude_of_Projection_Origin: 45.309167
False_Easting: 2546731.496000
False_Northing: -4354009.816000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001024
Ordinate_Resolution: 0.001024
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Polygons
Entity_Type_Definition: A 40 acre polygon grid
Entity_Type_Definition_Source: MNFI
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: CNTYNAME_M
Attribute_Definition: The county name
Attribute_Definition_Source: Stco24
Attribute:
Attribute_Label: AREA
Attribute_Definition: Area in square meters
Attribute_Definition_Source: Software
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Polygon perimeter in meters
Attribute_Definition_Source: software
Attribute:
Attribute_Label: PROB
Attribute_Definition: Probability value
Attribute_Definition_Source: MNFI
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: No Status
Enumerated_Domain_Value_Definition_Source: MNFI
Enumerated_Domain:
Enumerated_Domain_Value: 0.25
Enumerated_Domain_Value_Definition: Low probability of encountering a rare species
Enumerated_Domain_Value_Definition_Source: MNFI
Enumerated_Domain:
Enumerated_Domain_Value: 0.5
Enumerated_Domain_Value_Definition: Medium probability of encountering a rare species
Enumerated_Domain_Value_Definition_Source: MNFI
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
High probability of encountering a rare species or high-quality natural community
Enumerated_Domain_Value_Definition_Source: MNFI
Attribute:
Attribute_Label: RI
Attribute_Definition: Rarity Index
Attribute_Definition_Source: MNFI
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 227.5
Attribute_Units_of_Measure: Rank
Overview_Description:
Entity_and_Attribute_Overview:
Probability represents the likelihood of encountering a rare species or high-quality natural community based on the age of the database record. The rarity index value is the sum of the values assigned to global status, state status, and quality ranking, multiplied by the probability value. These values are added for all occurrences intersecting each polygon grid feature.
Entity_and_Attribute_Detail_Citation:
Schools, E.H. and H. Enander. 2002. Preparing Sensitive Species Information for Land Use Master Planning. Michigan Natural Features White Paper
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Edward Schools
Contact_Organization: Michigan Natural Features Inventory
Contact_Position: Conservation and GIS Manager
Contact_Address:
Address_Type: mailing address
Address: PO Box 30444
City: Lansing
State_or_Province: MI
Postal_Code: 48909
Contact_Voice_Telephone: 517-373-0798
Contact_Electronic_Mail_Address: schoolse@michigan.gov
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 126.565
Metadata_Reference_Information:
Metadata_Date: 20060307
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Helen Enander
Contact_Organization: Michigan Natural Features Inventory
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing address
Address: PO Box 30444
City: Lansing
State_or_Province: MI
Postal_Code: 48909
Contact_Voice_Telephone: 517-373-2073
Contact_Electronic_Mail_Address: enanderh@michigan.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.6 on Tue Mar 14 15:06:43 2006