2000 Marsh Dieback Boundaries

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator:
Louisiana Department of Wildlife and Fisheries, Fur and Refuge Division, and the U.S. Geological Survey, Biological Resources Division's National Wetlands Research Center.
Publication_Date: 2000
Title: 2000 Marsh Dieback Boundaries
Geospatial_Data_Presentation_Form: Vector Digital data
Publication_Information:
Publication_Place: Lafayette, Louisiana
Publisher:
Louisiana Department of Wildlife and Fisheries, Fur and Refuge Division, and the U.S. Geological Survey's National Wetlands Research Center.
Description:
Abstract:
This data set contains vector line information. The original data set was collected through visual field observation by Greg Linscombe of LDWF and Robert H. Chabreck of LSU Agricultural Center. The observations were made while flying over the study area (Terrebonne-Bartaria Basin) in a Bell 206 Jet Ranger helicopter. Marsh dieback areas were noted while flying the transects for the 2000 Vegetative Marsh survey. The areas were delineated using a Trimble Ag 122 Global Positioning System (GPS) and a computer running Dynamo Geographic Information System (GIS) by GeoFocus. All boundaries are an approximation of the dieback.
Purpose:
To determine the acreage of the marsh dieback for the Terrebonne Bartaria basin.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Currentness_Reference: Observed
Status:
Progress: Complete
Maintenance_and_Update_Frequency: No current plans for updating the data.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -91.14
East_Bounding_Coordinate: -89.83
North_Bounding_Coordinate: 29.38
South_Bounding_Coordinate: 29.10
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Coastal
Theme_Keyword: Marsh
Theme_Keyword: Vegetation
Theme_Keyword: Delineation lines
Theme_Keyword: dieback
Theme_Keyword: acreage
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Louisiana
Place_Keyword: Coastal Louisiana
Place_Keyword: Terrebonne
Place_Keyword: Bartaria
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2000
Access_Constraints:
It is strongly recommended that this data is directly acquired from the distributor described above or from another USGS Biological Resources Division server and not indirectly through other sources which may have changed the data in some way. The distributor makes no claims as to the data's suitability for other purposes.
Use_Constraints:
Acknowledgement of the U.S. Geological Survey, National Wetlands Research Center and Louisiana Department of Wildlife and Fisheries as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by U.S. Geological Survey, National Wetlands Research Center staff. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. These data are not legal documents and are not to be used as such.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Louisiana Department of Wildlife and Fisheries, Fur and Refuge Division
Contact_Person: Greg Linscombe
Contact_Position: Biologist
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 2415 Darnall Road
City: New Iberia
State_or_Province: LA
Postal_Code: 70560
Country: USA
Contact_Voice_Telephone: 337 373-0032
Contact_Facsimile_Telephone: 337 373-0181
Contact_Electronic_Mail_Address: linscombe_rg@wlf.state.la.us
Native_Data_Set_Environment:
Dynamo Geographic Information System (GIS) by GeoFocus and Trimble Ag 122 Global Positioning System (GPS).
Cross_Reference:
Citation_Information:
Originator:
Louisiana Department of Wildlife and Fisheries, Fur and Refuge Division, and U.S. Geological Survey's National Wetlands Research Center
Publication_Date: 2001
Title: 2001 Marsh Dieback Boundaries
Publication_Information:
Publication_Place: Lafayette, LA
Publisher:
Louisiana Department of Wildlife and Fisheries, Fur and Refuge Division, and the U.S. Geological Survey's National Wetlands Research Center

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Please contact the principal investigator for accuracy of the GPS unit. In air delineation were performed; for a formal assessment, on ground delineation are needed.
Logical_Consistency_Report:
Data is inherently polygonal. Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the points of intersection.
Completeness_Report: Not all small sites were delineated.
Lineage:
Process_Step:
Process_Description:
The original data set was collected through visual field observation by Greg Linscombe of LDWF and Robert H. Chabreck of LSU Agricultural Center. The observations were made while flying over Terrebonne-Bartaria basin in a Bell 206 Jet Ranger helicopter. DynaMo GIS software (GeoFocus, Inc) and a differental GPS (Trimble Ag 122) were used while navigating the helicopter around the dieback areas. The DynaMo software generated vector polygon data for the areas. The coverage was subsequently cleaned, and assigned attributes in ArcView.
Process_Date: 2000
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Louisiana Coast Zone
Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: Unknown
Longitude_Resolution: Unknown
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The attributes include shape feature (polygon), siteid (numbers assigned by observers), acres and hectares
Entity_and_Attribute_Detail_Citation: Project defined
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Person: Steve Hartley
Contact_Position: Senior Geographer/GIS Analyst
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 700 Cajundome Blvd.
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337 266-8543
Contact_Facsimile_Telephone: 337 266-8616
Contact_Electronic_Mail_Address: steve_hartley@usgs.gov
Hours_of_Service:
8 AM to 4 PM CST for phone calls. Any hours for e-mail or fax transmittal.
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a Biological Resources Division server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. U.S. Geological Survey, National Wetlands Research Center shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties or merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the U.S. Geological Survey, National Wetlands Research Center Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and U.S. Geological Survey, National Wetlands Research Center interests.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCView shapefile
Format_Version_Number: Version 3.2
File_Decompression_Technique: None
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.brownmarsh.net>
Fees: None, if available on-line
Custom_Order_Process: Not available
Metadata_Reference_Information:
Metadata_Date: 20020128
Metadata_Review_Date: 20020129
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Helena Schaefer
Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Position: Geographer
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337 266-8696
Contact_Facsimile_Telephone: 337 266-8616
Contact_Electronic_Mail_Address: helena_schaefer@usgs.gov
Hours_of_Service:
8 AM to 4 PM CST for phone calls. Any hours for e_mail or fax transmittals.
Metadata_Access_Constraints: None
Metadata_Use_Constraints:
Acknowledgement of the National Wetlands Research Center as the metadata source would be appreciated. Please cite the original metadata when using portions of the record to create a similar record of slightly altered data, such as reprojection.
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.7.11 on Tue Jan 29 08:08:47 2002