Eelgrass Polygons for Narragansett Bay

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Mike Bradley
Originator: University of Rhode Island
Originator: Department of Natural Resources Science
Originator: 105 Coastal Institute Kingston
Originator: Kingston, RI
Publication_Date: Unpublished Material
Title: Eelgrass Polygons for Narragansett Bay
Edition: first
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: www.edc.uri.edu/rigis
Description:
Abstract:
Eelgrass and other habitat polygons for Narragansett Bay delineated from aerial photography.
Purpose:
Eelgrass was mapped to determine trends in eelgrass abundance and distribution since the last eelgrass mapping project in 1996.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Summer 2006
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.591664
East_Bounding_Coordinate: -71.191370
North_Bounding_Coordinate: 41.666862
South_Bounding_Coordinate: 41.173356
Keywords:
Theme:
Theme_Keyword_Thesaurus: same as keywords
Theme_Keyword: Eelgrass
Theme_Keyword: shallow-subtidal habitats
Theme_Keyword: submerged aquatic vegetation
Theme_Keyword: SAV
Place:
Place_Keyword: Narragansett Bay
Temporal:
Temporal_Keyword: summer 2006
Access_Constraints: None.
Use_Constraints:
These data DO NOT preclude a site specific visit for future coastal permitting purposes.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mike Bradley
Contact_Organization: Environmental Data Center
Contact_Position: Research Associate
Contact_Address:
Address_Type: mailing and physical address
Address: Department of Natural Resources Science
Address: 105 Coastal Institute Kingston
City: Kingston
State_or_Province: Rhode Island
Postal_Code: 02881
Country: USA
Contact_Voice_Telephone: 401-874-5054
Contact_Facsimile_Telephone: 401-874-4561
Contact_Electronic_Mail_Address: mike@edc.uri.edu
Hours_of_Service: 9-5
Contact_Instructions: Email or phone preferred.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.5.1450
Cross_Reference:
Citation_Information:
Originator: Mike Bradley
Originator: Enviornmental Data Center
Originator: University of Rhode Island
Publication_Date: October 2007
Title:
Report on the Analysis of True Color Aerial Photography to Map and Inventory Zostera marina L. in Narragansett Bay and Block Island, Rhode Island
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attributes were internally QA/QC'd. No known errors exist. See attribute table for indication of accuracy of identification of eelgrass beds.
Logical_Consistency_Report:
Data are consistent with 1:5000 RIDOT 03-04 orthophotography. Delineations were done by "heads-up" digitizing on 1:12000 orthophotography from James W. Sewall Co.
Completeness_Report: Data are complete
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Listed accuracy of source DOQQs from James W. Sewall is +/- 50 feet. However accuracy is believed to be closer to +/- 20ft based on overlays of 1:5k datasets and field determination of polygon edges using WAAS enabled GPS.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: NA
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: James W. Sewall Co
Publication_Date: September 2006
Title: Summer 2006 True Color Orthophotography
Other_Citation_Details: 1:1200 scale and 0.5 pixel resolution, taken August 5th, 2006
Source_Contribution: basemap
Process_Step:
Process_Description:
Orthophotography, prints, and transparencies of Narragansett Bay were collected by James W. Sewall Co on August 5th, 2006. All three formats were used for interpretation of eelgrass beds. Initial interpretations were done and delineated by heads up digitizing on the Sewall orthophotography (1:12000 scale and 0.5m pixel resolution). These delineations were taken into the field and ground truthed using a Trimble GeoXH and gps enabled tablet pc. Deep water edges of eelgrass beds were determined using underwater video equipment, fathometer signals, boat observations using a view scope, and in some instances, divers. Once determined, the original polygon was then re-digitized in the field using the GPS enabled tablet pc or back in the lab using Trimble GeoXH data. Ground-truthing was completed in the summer of 2007.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mike Bradley
Contact_Organization: University of Rhode Island - Environmental Data Center
Contact_Position: Research Associate
Contact_Address:
Address_Type: mailing and physical address
Address: University of Rhode Island
Address: Department of Natural Resources Science
Address: 105 Coastal Institute Kingston
City: Kingston
State_or_Province: Rhode Island
Postal_Code: 02881-0804
Country: USA
Contact_Voice_Telephone: 401 874 5054
Contact_Facsimile_Telephone: 401 874 4561
Contact_Electronic_Mail_Address: mike@edc.uri.edu
Hours_of_Service: 9-5
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation: D:\mikeB\sav\narr_bay_ee
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation: E:\sav\narr_bay_bi_ee
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: 192
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 3800
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999994
Longitude_of_Central_Meridian: -71.500000
Latitude_of_Projection_Origin: 41.083333
False_Easting: 328083.333333
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: survey feet
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: narr_bay_bi_ee
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: Id
Attribute:
Attribute_Label: cover
Attribute:
Attribute_Label: area
Attribute:
Attribute_Label: habitat
Attribute:
Attribute_Label: g_truth
Attribute_Definition: whether or not the polygon was ground truthed
Attribute:
Attribute_Label: method
Attribute_Definition: how the polygon was ground truthed
Attribute:
Attribute_Label: site
Attribute:
Attribute_Label: dw_edge
Attribute_Definition: was the deep water edge determined?
Attribute:
Attribute_Label: determ
Attribute_Definition: how the polygon was initially determined to exist.
Attribute:
Attribute_Label: acres
Attribute:
Attribute_Label: hydgraph
Distribution_Information:
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.134
Metadata_Reference_Information:
Metadata_Date: 20080523
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Rhode Island - Environmental Data Center
Contact_Person: Mike Bradley
Contact_Position: Research Associate
Contact_Address:
Address_Type: mailing and physical address
Address: University of Rhode Island
Address: Department of Natural Resources Science
Address: 105 Coastal Institute Kingston
City: Kingston
State_or_Province: RI
Postal_Code: 02881-0804
Country: USA
Contact_Voice_Telephone: 401 874 5054
Contact_Facsimile_Telephone: 401 874 4561
Contact_Electronic_Mail_Address: mike@edc.uri.edu
Hours_of_Service: 9-5
Contact_Instructions: Email or phone preferred
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 Fri May 23 11:37:46 2008