This dataset was created for The Nature Conservancy's South Florida Marine Ecoregional Plan.
CM NOTES
1. METADTA MOSTLY DONE, BUT NEED TO CHANGE FROM CAR TO SF IN SEVERAL SPOTS, PLEASE REVIEW
Purpose:
The purpose of this dataset is to provide data for an assessment of target species and habitat types that will be used in the ecoregional planning process of the South Florida Marine Ecoregion.
Supplemental_Information:
A detailed description of the procedures used to produce this dataset are outlined in an unpublished document written by Duke University Geospatial Analysis (DUGAP) researchers. To obtain a copy of this document contact Dan Dorfman via email at ddorfman@tnc.org
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20041001
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -85.405702
East_Bounding_Coordinate: -79.709062
North_Bounding_Coordinate: 28.528208
South_Bounding_Coordinate: 24.199130
Keywords:
Theme:
Theme_Keyword: Ecoregional Planning
Theme_Keyword: The Nature Conservancy
Theme_Keyword: Benthic Complexity
Theme_Keyword: Surrogate Data
Place:
Place_Keyword: North America
Place_Keyword: Southeast United States
Place_Keyword: North Carolina
Place_Keyword: Virginia
Place_Keyword: South Carolina
Place_Keyword: Georgia
Place_Keyword: Florida
Place_Keyword: Carolinian Marine Ecoregion
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dan Dorfman
Contact_Organization: The Nature Conservancy, Marine Initiative
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Duke University Geospatial Analysis Program (DUGAP)
Publication_Date: 20041001
Title: 30 Meter Cell Bathymetry for the Carolinian Marine Ecoregion
Geospatial_Data_Presentation_Form: raster digital data
Source_Time_Period_of_Content:
Source_Currentness_Reference: publication date
Process_Step:
Process_Description:
MARXAN Preprocessing Steps
1.) created flowdirection grid
2.) created focal variety grid from flow direction grid
3.) created a focal mean grid with 8 values, all values > 4 were coded as "benthic complexity" with an integer value of 1
4.) subtracted focal mean grid from original bathymetry grid
5.) created an integer absolute value grid from result of Step #4
6.) removed all values < .5 meters in depth difference.
7.) divided results of Step #6 into 8 quantiles
8.) all values in the top 4 quantiles were coded as "benthic complexity" with an integer value of 1. This meant that all cells with a mean difference in depth > .8 were coded as complex.
9.) added the focal variety and difference grids together
10.) Summed up difference and focal mean classes. All sums equal to 2 were coded as benthic complexity
Source_Used_Citation_Abbreviation: 30 Meter Cell Bathymetry for the Carolinian Marine Ecoregion
Process_Date: 20040601
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Chris Mankoff
Contact_Organization: Duke University Geospatial Analysis Program (DUGAP)