Aggregated Crab Catch and Effort Grid 2000-2004
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Fisheries and Oceans Canada
- Publication_Date: February 2006
- Title: Aggregated Crab Catch and Effort Grid 2000-2004
- Edition: 1
- Geospatial_Data_Presentation_Form: vector digital data
- Series_Information:
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- Series_Name: Marine Atlas of Pacific Canada
- Publication_Information:
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- Publisher:
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The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project
- Online_Linkage:
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\\POTTER\L$\Data Library\Restricted\CommercialFish\BCMCA_hu_CommercialFish_Crab_data.shp
- Larger_Work_Citation:
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- Citation_Information:
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- Originator:
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The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project
- Publication_Date: May 2011
- Title: Marine Atlas of Pacific Canada
- Online_Linkage: www.bcmca.ca/atlas
- Description:
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- Abstract:
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The Dungeness Crab catch and effort grid dataset has been assembled directly from the Shellfish Stock Assessment harvest log database located at the Pacific Biological Station (PBS). The dataset has been modified to meet the sensitive nature of the data as per the Access to Information Act20(1)(b,c); which specifies that Fisheries and Oceans Canada will not disclose to a third party confidential information that may prejudice the competitive position of the fisher, in which fishing location has been identified as one of the entities to be protected. There was a 4km x 4km grid used in the desensitization process as well information was limited to total Effort (# traps and soak time) and total Catch (calculated lbs and number of pieces). The dataset is comprised of an aggregate of only dungeness and specifically targets the 2000-2004 fishing seasons.
- Purpose:
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The purpose of the data is to display complete, up-to-date information on commercial Dungeness crab fishing activities along the coast of British Columbia for the BCMCA Atlas and Marxan analyses. This dataset was originally developed in fulfillment of a request by the Oceans Action Plan (OAP) committee with the intent to contribute to management plans within the Pacific North Coast Integrated Management Area (PNCIMA). It was subsequently provided to the British Columbia Marine Conservation Analysis (BCMCA).
The British Columbia Marine Conservation Analysis (BCMCA) is a collaborative project assembling and analyzing spatial information about Canada's Pacific Ocean. The overall goal of the BCMCA is to identify marine areas of high conservation value and marine areas important to human use. Results of the project are intended to inform and help advance marine planning initiatives in BC by providing collaborative, peer-reviewed scientific analyses based on the best ecological and human use spatial data at scales relevant to a BC coast-wide analysis.
- Supplemental_Information:
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Due to the varibale nature of the data not all of the information in the database can be shown spatially. The data availability for this data set is 90.01%
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 2000
- Ending_Date: 2004
- Currentness_Reference: publication date
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -132.899734
- East_Bounding_Coordinate: -122.255438
- North_Bounding_Coordinate: 55.532329
- South_Bounding_Coordinate: 48.188938
- Keywords:
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- Theme:
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- Theme_Keyword: Crab
- Theme_Keyword: Trap
- Theme_Keyword: Shellfish
- Theme_Keyword: economy
- Theme_Keyword: catch
- Theme_Keyword: effort
- Theme_Keyword: Dungeness
- Place:
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- Place_Keyword: BC
- Place_Keyword: Pacific Ocean
- Temporal:
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- Temporal_Keyword: 2000
- Temporal_Keyword: 2001
- Temporal_Keyword: 2002
- Temporal_Keyword: 2003
- Temporal_Keyword: 2004
- Access_Constraints:
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A Limited Use Agreement must be completed and returned to Fisheries and Oceans Canada
- Use_Constraints: As outlined in the Limited Use Agreement
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Sean MacConnachie
- Contact_Organization: Fisheries and Oceans Canada
- Contact_Position: Oceans Project Co-ordinator
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 4166 Departure Bay Road
- City: Nanaimo
- State_or_Province: BC
- Postal_Code: V9T 6B7
- Country: Canada
- Contact_Voice_Telephone: 250-756-7265
- Data_Set_Credit: Fisheries and Oceans Canada, Pacific Biological Station
- Native_Data_Set_Environment:
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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4km x 4km grid cells that meet the requirements of the Access to Information Act five attributes were obtained : soak_hrs, #_Traps,#_landed, catch_lbs, soak_days
- Quantitative_Attribute_Accuracy_Assessment:
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- Attribute_Accuracy_Value: soak_hours
- Attribute_Accuracy_Explanation: A total soak time in hours from the CrabLogs database
- Quantitative_Attribute_Accuracy_Assessment:
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- Attribute_Accuracy_Value: #_landed
- Attribute_Accuracy_Explanation:
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Value is num_landed where given, or calculated from weight using table 'weights_by_area' where not given.
- Quantitative_Attribute_Accuracy_Assessment:
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- Attribute_Accuracy_Value: catch_lbs
- Attribute_Accuracy_Explanation:
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Value is weight (converted to pounds) where given, or calculated from num_landed using table 'weights_by_area' where not given
- Quantitative_Attribute_Accuracy_Assessment:
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- Attribute_Accuracy_Value: soak_days
- Attribute_Accuracy_Explanation: Number of Days fisher said Traps were Soaked
- Quantitative_Attribute_Accuracy_Assessment:
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- Attribute_Accuracy_Value: #_Traps
- Attribute_Accuracy_Explanation: Number of Traps fisher reports pulling.
- Logical_Consistency_Report:
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Data has been cleaned using a dangle length of .001m and fuzzy tolerance of .0001m
A 4km x 4km grid was used with an grid origin of: Easting -27940m, Northing 94650m
To meet the sensitivity requirements of the Access to Information Act a count of 3 or more vessles (CFV field used), that were fishing within the same grid cell was used. To allow for more data to be shown the data was amalgamated across all years where accurate spatial information was provided.
- Completeness_Report:
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See the Marine Atlas of British Columbia, p121, for reviewer comments and caveats of use.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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A 4km x 4km grid was used with an grid origin of: Easting -27940m, Northing 94650m
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report:
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A 4km x 4km grid was used with an grid origin of: Easting -27940m, Northing 94650m
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: PBS Shellfish Data Unit
- Publication_Date: Unknown
- Title: Crab Trap Logs
- Geospatial_Data_Presentation_Form: tabular digital data
- Source_Scale_Denominator: Variable
- Type_of_Source_Media: online Database
- Source_Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 2000
- Ending_Date: 2004
- Source_Currentness_Reference: publication date
- Process_Step:
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- Process_Description:
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- Queries crablog database for CFV, Catch, Effort, lat and long and year range fields
- In ArcMap using Lon & Lat fields as XY coordinates created a shape file
- Using XTOOLS XY field and coordinates were assigned.
- Exported dbf file to uniquecfv.mdb database provided by Norm Olson (PBS) to populate index fields which were required to spatially sort unique CFV. XY fields were used to assign a point value associated with a unique grid value. Fields were than summed by CFV to provide a summed value for each unique CFV in each grid.
- Within ArcMap imported the new dbf file into ArcMap and use XY coordinates to map the points.
- Joined the 4km x 4km grid to the point file. During the joining all fields are summed. A newly created Sum of Count field indicated number of unique vessels in the grid.
- Select only those records that have a sum vessel count greater than 2.
- Export selected records and create new shape file.
- Eliminated all irrelevant fields keeping only the GridCell, #_vessels, Effort and Catch attribute items
- Process_Date: February 2006
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Sean MacConnachie
- Contact_Organization: Fisheries and Oceans Canada
- Contact_Position: Project Co-ordiantor
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 4166 Departure Bay Road
- City: Nanaimo
- State_or_Province: BC
- Postal_Code: V9T 6B7
- Country: Canada
- Contact_Voice_Telephone: 250-756-7265
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: G-polygon
- Point_and_Vector_Object_Count: 600
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Map_Projection:
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- Map_Projection_Name: Albers Conical Equal Area
- Albers_Conical_Equal_Area:
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- Standard_Parallel: 50.000000
- Standard_Parallel: 58.500000
- Longitude_of_Central_Meridian: -126.000000
- Latitude_of_Projection_Origin: 45.000000
- False_Easting: 1000000.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.000000
- Ordinate_Resolution: 0.000000
- Planar_Distance_Units: meters
- Geodetic_Model:
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- 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:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: BCMCA_hu_CommercialFish_Crab_data
- Entity_Type_Definition:
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Crab by trap, 2000-2004, 4km x 4km grid, Greater than two vessls per grid
- Attribute:
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- Attribute_Label: SOAK_HRS
- Attribute_Definition: A total soak time in hours from the CrabLogs database
- Attribute:
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- Attribute_Label: CATCH_LB
- Attribute_Definition:
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Value is weight (converted to pounds) where given, or calculated from num_landed using table 'weights_by_area' where not given
- Attribute:
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- Attribute_Label: FID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
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- Attribute_Label: SOAK_DAYS
- Attribute_Definition: Number of Days fisher said Traps were Soaked
- Attribute:
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- Attribute_Label: OBJECTID
- Attribute:
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- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
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- Attribute_Label: FID_1
- Attribute:
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- Attribute_Label: VESSELS
- Attribute:
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- Attribute_Label: TRAPS
- Attribute_Definition: Number of Traps fisher reports pulling.
- Attribute:
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- Attribute_Label: LANDED
- Attribute_Definition:
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Value is num_landed where given, or calculated from weight using table 'weights_by_area' where not given.
- Attribute:
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- Attribute_Label: SHAPE_AREA
- Attribute_Definition: Area of feature in internal units squared.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive real numbers that are automatically generated.
- Attribute:
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- Attribute_Label: SHAPE_LEN
- Overview_Description:
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- Entity_and_Attribute_Overview:
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The 4km x 4km gridcells present in this dataset have met the 3 vessle rule. The attribute information have been rolled-up per gridcell include the Total "soak_days and Total "Catch_lbs".
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Dwight McCullough
- Contact_Organization: Fisheries and Oceans Canada
- Contact_Position: GIS Coordinator
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: Suite 200 401 Burrard Street
- City: Vancouver
- State_or_Province: BC
- Postal_Code: V6C 3S4
- Country: Canada
- Contact_Voice_Telephone: 604-666-2044
- Contact_Electronic_Mail_Address: Dwight.McCullough@dfo-mpo.gc.ca
- Resource_Description: Downloadable Data
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Transfer_Size: 0.016
- Available_Time_Period:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 2000
- Ending_Date: 2004
- Metadata_Reference_Information:
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- Metadata_Date: 20111229
- Metadata_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Dave Nicolson
- Contact_Organization: British Columbia Marine Conservation Analysis
- Contact_Position: Project Manager
- Contact_Electronic_Mail_Address: info@bcmca.ca
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
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Generated by mp version 2.9.6 on Thu Dec 29 11:52:00 2011