1968 Louisiana Coastal Marsh Vegetative Type Transect Point Dataset

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Geological Survey, Biological Resources Division National Wetlands Research Center Coastal Restoration Field Office and Louisiana State University
Publication_Date: 20000912
Title:
1968 Louisiana Coastal Marsh Vegetative Type Transect Point Dataset
Geospatial_Data_Presentation_Form: Digital Database
Publication_Information:
Publication_Place: Baton Rouge, LA
Publisher: U.S. Geological Survey National Wetlands Research Center
Description:
Abstract:
This dataset contains a point coverage with an associated database file. The original dataset was collected through visual field observation by Robert Chabreck (Louisiana Cooperative Wildlife Research Unit, LSU), Ted Joanen (Louisiana Wildlife and Fisheries Commission) and A.W. Palmisano (Louisiana State University). The observations were made flying over the study area (Louisiana Coastal Zone). The flight was along north/south transects spaced 7.5 minutes apart from the Texas state line to the Mississippi state line. Vegetative data were obtained at predetermined stations spaced 1/4 miles along each transect. This information was recorded manually into field tally sheets. The flight line data was used as a guide to generate the points along the transect routes using ARC/Info 8.0. The new dataset resulted in a point coverage and associated database file containing vegetative marsh type attributes along transect flight lines. Coverage is of the coastal region of the State of Louisiana.
Purpose:
To create an Arc/Info point coverage of the 1968 Louisiana Coastal Marsh Type Study.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19680800
Currentness_Reference: Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -93.892
East_Bounding_Coordinate: -88.962
North_Bounding_Coordinate: 30.447
South_Bounding_Coordinate: 28.910
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Coastal
Theme_Keyword: Marsh
Theme_Keyword: Vegetation
Theme_Keyword: Flight Lines
Theme_Keyword: Transect
Theme_Keyword: Points
Theme_Keyword: Ecological Characterization
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Coastal Louisiana
Place_Keyword: Louisiana Coastal Zone
Place_Keyword: Louisiana
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 1968
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 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:
U.S. Geological Survey, Biological Resource Division National Wetlands Research Center
Contact_Person: Ann Ballard
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: Mailing Address
Address: P.O. Box 25098
City: Baton Rouge
State_or_Province: Louisiana
Postal_Code: 70894
Country: USA
Contact_Voice_Telephone: 225 578-7488
Contact_Facsimile_Telephone: 225 578-7478
Contact_Electronic_Mail_Address: aballard@usgs.gov
Data_Set_Credit:
The U.S. Geological Survey, National Wetlands Research Center would like to acknowledge Louisiana State University for use of the field data related to the 1968 Louisiana Coastal Marsh Vegetation Type Study.
Native_Data_Set_Environment:
GIS software used was Arc/Info 8.0. The operating platform was UNIX on a SGI workstation.
Cross_Reference:
Citation_Information:
Originator:
USGS/BRD National Wetlands Research Center Coastal Restoration Field Office
Publication_Date: 20000400
Title: Vegetation Type Map of the Louisiana Coastal Marshes 1968
Publication_Information:
Publication_Place: Baton Rouge, LA
Publisher:
USGS/BRD National Wetlands Research Center Coastal Restoration Project Office


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
For the original data, the accuracy is not based on a formal quantitative assessment and was based on the judgement of the data collector in the field.
Logical_Consistency_Report:
A visual hard copy to screen comparison was made to ensure point location accuracy and that no points were excluded or have missing attributes. The attribute information was checked against the field tally sheets and reviewed by Dr. Chabreck.
Completeness_Report:
For the original data, all data were derived in the same general format of collecting data at pre-determined stations while flying along transect routes in a helicopter. Stations ending in 1-8 were observed from the air; stations ending in 9 were observed on ground. There were no stations ending in 0; these were excluded from the study survey method.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Positional accuracy is determined by the source data.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Not applicable
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Louisiana State University, Louisiana Cooperative Wildlife Research Unit and Louisiana Wildlife and Fisheries Commission
Publication_Date: 19680800
Title: Vegetation of Louisiana Coastal Marshes
Geospatial_Data_Presentation_Form: Map
Publication_Information:
Publication_Place: Baton Rouge, LA
Publisher: LSU
Source_Scale_Denominator: 100000
Type_of_Source_Media: Paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19680800
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: LSU
Source_Contribution: Primary data source for marsh type locations
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Louisiana State University, Louisiana Cooperative Wildlife Research Unit and Louisiana Wildlife and Fisheries Commission
Publication_Date: 19680800
Title: Field Tally sheets of the 1968 Louisiana Coastal Marsh study.
Geospatial_Data_Presentation_Form: Field sheets
Publication_Information:
Publication_Place: Baton Rouge, LA
Publisher: LSU
Type_of_Source_Media: Paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19680800
Source_Currentness_Reference: Observed
Source_Citation_Abbreviation: LSU FS
Source_Contribution: Primary data source for attributes
Process_Step:
Process_Description:
The attribute information from the original tally field sheets were entered into a dbf file. A GIS software application (Arc/Info) was used to generate the points along the transect routes. The new dataset resulted in a point coverage containing the vegetative marsh type attributes along transect flight lines.
Process_Date: 20000912


Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Louisiana Coastal Zone
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 7115


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 15
Transverse_Mercator:
Longitude_of_Central_Meridian: -93.00
Latitude_of_Projection_Origin: 0.00
False_Easting: 500000
False_Northing: 0
Scale_Factor_at_Central_Meridian: .9996
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 2.54
Ordinate_Resolution: 2.54
Planar_Distance_Units: Meters
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:
This dataset consists of a point coverage with an associated database. The 7115 points have over 32,000 associated records within the dbf. A point may have more than one record associated with it. The attributes for the points include the following: trans_stat (transect number/station number), transect (transect number), station (station number), wbwdth (the width of any water body present in feet), wblength (the length of any water body present in feet), wbdepth (the depth of any water body present in feet), emf (the electromotive force indicating the oxidiation/reduction potential, measuring soil acidity as +/-), ph (measure of acidity or alkalinity of soil), locat_code (code of geographic description), locat_descr (geographic description), add_loc_co (code for additional location description), add_descr (additional location description), marsh_code (code for marsh type), marshtype (type of marsh), species_cod (code for vegetative specimen recorded in a 50 unit area), scientific (scientific name of vegetative specimen), common_name (common name of vegetative specimen), coverage (percentage of vegetation present in a 50 unit area), occur_code (code for relative occurance of a species in a 50 unit area), and relative_a (relative occurance of a species in a 50 unit area).
Entity_and_Attribute_Detail_Citation:
Field tally sheets and data collectors' notes used in the 1968 Louisiana Coastal Marsh study.


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey Biological Resources Division National Wetlands Research Center
Contact_Person: Steve Hartley
Contact_Position: Geographer/GIS Analyst
Contact_Address:
Address_Type: Physical and Mailing 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: 8:00am to 4:00pm CST Monday thru Friday
Resource_Description: Vegetative marsh point data for 1968
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:
Fees: None, if available on-line
Custom_Order_Process: Not available


Metadata_Reference_Information:
Metadata_Date: 20000914
Metadata_Review_Date: 20020103
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Christina Saltus
Contact_Organization:
U.S. Geological Survey, Biological Resources Division National Wetlands Research Center Coastal Restoration Field Office
Contact_Position: Geographer
Contact_Address:
Address_Type: Mailing Address
Address: P.O. Box 25098
City: Baton Rouge
State_or_Province: LA
Postal_Code: 70894
Country: USA
Contact_Voice_Telephone: 225 578-7483
Contact_Facsimile_Telephone: 225 578-7478
Contact_Electronic_Mail_Address: csaltus@usgs.gov
Hours_of_Service: 8:00am to 4:00pm CST Monday thru Friday
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 2.7.33 on Thu Jul 21 09:35:00 2005