Monthly Fish Trawl Locations

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: RIDEM Division of Fish and Wildlife
Title: Monthly Fish Trawl Locations
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
After the North Cape oil spill along the south coast of Rhode Island in 1996, it became obvious that it was difficult to determine the amount of damage to the impacted natural resources, in part because the appropriate monitoring data were in cumbersome, disparate formats, making it difficult to obtain the necessary information. Since then, the Rhode Island Department of Environmental Management (RIDEM) has initiated an effort to compile all appropriate data into a geographic information system (GIS) in order to alleviate this problem. Included in this effort is a project headed by the Narragansett Bay National Estuarine Research Reserve (NBNERR) in cooperation with the University of Rhode Island's Environmental Data Center (URI-EDC) to obtain all appropriate long-term biological monitoring datasets for estuarine natural resources and format them into Microsoft Access databases, from which they can be queried, imported into ESRI GIS software, and viewed. In this way, a large amount of data can be queried and viewed (in both tabular and cartographic formats) in a short period of time to aid in oil spill damage assessment and a myriad other applications (e.g., permitting, research, education, etc.).
Purpose:
The monthly fish trawl is conducted by the RIDEM Division of Fish and Wildlife under the direction of Timothy Lynch. This survey has been conducted continually since 1990 at 12 fixed stations in Narragansett Bay (Figure 3). These stations were selected from among the 204 previously defined seasonal fish trawl stations. One trawl sample is collected from each sampling station each month for a total of 12 samples per station per year.

The current Access database includes all data collected from 1990-2003. It includes data for 96 species (Table 2) and can be queried based on species (common name or scientific name) and month (January through December). All data in the dataset are presented as catch-per-unit-effort (CPUE) for each station, each month. Since only one trawl was taken from each station per month (effort = 1), no calculations were necessary to obtain CPUE. A total average was also calculated and included in the dataset by averaging the CPUE at each station over all the years of the study. This column will thus display a 'typical' abundance for the species in question during the month selected.

All data in the Access database were taken directly from spreadsheets provided by Tim Lynch, and no changes were made to the naming conventions of any species in order to maintain compatibility with the original dataset. As such, there are some invertebrate species (e.g., horseshoe crab, sea scallop) where only the common name was provided and scientific names were left blank (e.g., horseshoe crab, sea scallop), or denoted by a "?" (e.g., striped snail). Thus, querying for these species is only possible using the common names.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground.
Currentness_Reference:
REQUIRED: The basis on which the time period of content information is determined.
Status:
Progress: REQUIRED: The state of the data set.
Maintenance_and_Update_Frequency:
REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.411976
East_Bounding_Coordinate: -71.226485
North_Bounding_Coordinate: 41.704897
South_Bounding_Coordinate: 41.471075
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword:
REQUIRED: Common-use word or phrase used to describe the subject of the data set.
Access_Constraints: None
Use_Constraints: Cite Source
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Timothy Lynch
Contact_Organization: RIDEM Division of Fish and Wildlife
Contact_Address:
Address_Type: mailing and physical address
Address: RIDEM Division of Fish and Wildlife
Address: Fort Wetherill Office
Address: 3 Ft. Wetherill Rd.
City: Jamestown
State_or_Province: Rhode Island
Postal_Code: 02835
Contact_Voice_Telephone: 401.423.1928
Contact_Electronic_Mail_Address: tlynch@dem.state.ri.us
Hours_of_Service: M-F
Contact_Instructions: e-mail preferred
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.0.0.535

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 12

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System
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: 0.000128
Ordinate_Resolution: 0.000128
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
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 0.000010
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Trawl_Monthly_point
Attribute:
Attribute_Label: OBJECTID
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: AREA
Attribute:
Attribute_Label: PERIMETER
Attribute:
Attribute_Label: NB_TLSTATI
Attribute:
Attribute_Label: NB_TLSTA_1
Attribute:
Attribute_Label: STATION
Attribute:
Attribute_Label: STAT_ID
Detailed_Description:
Entity_Type:
Entity_Type_Label: Monthly Trawl (point) to Monthly Trawl (table)

Distribution_Information:
Resource_Description: Downloadable Data

Metadata_Reference_Information:
Metadata_Date: 20040910
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: URI Environmental Data Center
Contact_Position: Research Associate
Contact_Address:
Address_Type: mailing and physical address
Address: URI Coastal Institute at Kingston
Address: 1 Greenhouse Road
City: Kingston
State_or_Province: Rhode Island
Postal_Code: 02881
Contact_Voice_Telephone: 401.874.5054
Contact_Facsimile_Telephone: 401.874.4561
Hours_of_Service: M-F
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 May 17 10:42:51 2005