BCMCA_hu_CommercialFish_krill_marxan_data

Metadata also available as

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

Fisheries and Oceans Canada / BC Marine Conservation Analysis, a Tides Canada Initiatives Project

Publication_Date: January 2012

Title: BCMCA_hu_CommercialFish_krill_marxan_data

Edition: 1

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Marine Atlas of Pacific Canada

Publication_Information:

Publisher:: The British Columbia Marine Conservation Analysis (BCMCA), a Tides Canada Initiatives Project

Larger_Work_Citation:

Citation_Information:

Originator:: 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:

Abstract:: The Krill catch and effort grid dataset has been assembled directly from the Shellfish Data Units 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 10km x 10km grid used in the desensitization process as well information was limited to total Effort (hr) and total Catch (lbs). The dataset is comprised of an aggregate of Krill only and specifically targets the 2000-2004 fishing seasons.
Purpose:: The purpose of the data is to display complete, up-to-date information on commercial Krill 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). Data presented as 2 km x 2 km planning units for MARXAN analysis.
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:: All fishing locations were derived for coordinates that have been provided by fishermen. In each the years from 2000 to 2004 between 96.4% & 100% of the data had latitude & longitude which could be mapped.
Due to the sensitive nature of the data not all of the information in the database can be shown spatially. In each the years from 2000 to 2004 between 20.2% & 89.4% of the data in the database met sensitivity requirements.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2000
Ending_Date: 2004

Currentness_Reference: publication date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -125.142739
East_Bounding_Coordinate: -123.858276
North_Bounding_Coordinate: 50.453728
South_Bounding_Coordinate: 49.537838

Keywords:

Theme:

Theme_Keyword_Thesaurus:: REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: Shellfish
Theme_Keyword: Krill
Theme_Keyword: Euphausiid
Theme_Keyword: Trawl
Theme_Keyword: economy
Theme_Keyword: catch
Theme_Keyword: effort
Theme_Keyword: Marxan

Place:

Place_Keyword: BC
Place_Keyword: Pacific Ocean

Temporal:

Temporal_Keyword: 2000
Temporal_Keyword: 2001
Temporal_Keyword: 2002
Temporal_Keyword: 2003
Temporal_Keyword: 2004

Access_Constraints:

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:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: BC Marine Conservation Analysis

Contact_Address:

Address_Type: mailing and physical address

Contact_Electronic_Mail_Address: info@bcmca.ca

Data_Set_Credit: Fisheries and Oceans Canada, Pacific Biological Station

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3500

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

10km x 10km grid cells that meet the requirements of the Access to Information Act two attributes were obtained a total Effort_hr and Catch_lbs per grid cell

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: Effort_hr
Attribute_Accuracy_Explanation:: A total effort in hours needed to catch 'x' amount using the Time_Fished field from the ZnonDiveEuphLogs database

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Value: Catch_lbs
Attribute_Accuracy_Explanation:: A total catch in pounds per species using the Tot_Landing field from the ZnonDiveEuphLogs database

Logical_Consistency_Report:

Data has been cleaned using a dangle length of .001m and fuzzy tolerance of .0001m A 10km x 10km 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 vessels (CFV field used), that were fishing within the same grid cell and within the same fishing season (Year field used) was used

Completeness_Report:

See the Marine Atlas of British Columbia, p125, for reviewer comments and caveats of use.
2000:The percentage of data with Latitude & Longitude = 97.0% The percentage of data captured meeting the sensitivity requirements = 83.3%
2001:The percentage of data with Latitude & Longitude = 97.4% The percentage of data captured meeting the sensitivity requirements = 77.5%
2002: The percentage of data with Latitude & Longitude = 97.3% The percentage of data captured meeting the sensitivity requirements = 89.4%
2003: The percentage of data with Latitude & Longitude = 96.9% The percentage of data captured meeting the sensitivity requirements = 20.2%
2004:The percentage of data with Latitude & Longitude = 100% The percentage of data captured meeting the sensitivity requirements = 66.7%

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:: A 10km x 10km grid was used with an grid origin of: Easting -27940m, Northing 94650m. Grid converted to a 2 km x 2 km grid for the BCMCA Marxan analyses.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:: A 10km x 10km grid was used with an grid origin of: Easting -27940m, Northing 94650m

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: PBS Data Unit
Publication_Date: Unknown
Title: ZnonDiveEuphLogs
Geospatial_Data_Presentation_Form: tabular digital data

Source_Scale_Denominator: Variable

Type_of_Source_Media: online Database

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 2000
Ending_Date: 2004

Source_Currentness_Reference: publication date

Process_Step:

Process_Description:

- In ArcMap "Add xy Data" using the Lon & Lat fields from the ZnonDiveEuphLogs database - Export the event data to create a point shapefile - Define Projection of the exported KrillLog shapefile to Geographic Coordinates (Fishermen supplied coordinates) - Reproject KrillLogs shapefile to Nad83 Albers - Within ArcMap imported the new Albers KrillLog points and 10km x 10km grid polygonal shapefile - Eliminated those arrant points not falling within the Pacific Coastline from KrillLog shapefile. Errors mostly due to invalid coordinates provided by fishermen - Joined the 10km x 10km grid to the KrillLogs point file based on they're "Spatial Location" - Exported the attribute table from the output shapefile from the join and imported the DBF into the Sensitive.mdb database - Used the "percentLat_deg" query to calculate the percentage of records with Lat & Longs coordinates for the given season per species noting the results - Selected the interested season in the "KLicensestep0" query saved & the closed the query - Ran the "KrillMacro" in the Sensitive.mdb - Recorded the percentage of data used that met the sensitivity requirements - Exported the results of the Macro as a DBF file - In ArcMap imported the resultant DBF file and joined it to the 10km x 10km grid shapefile using "GridC"(from DBF) & "GridCell"(from 10km x 10km grid) as the join field. Using the "Advanced" option when joining that only includes the joined records - Converted the 10km x 10km grid to a shapefile to make the join permanent - Eliminated all irrelevant fields keeping only the GridCell, Effort_km and Catch_lbs attribute items - All queries pertaining to the creation of this dataset have been housed in \\Apnpacrhq01\PNCIMA\Draft_MUA_maps\Invertabrate_Maps\data\sensitive.mdb

Process_Date: June 2005

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Erick Merner
Contact_Organization: Department of Fisheries and Oceans, Pacific Biological Station

Contact_Position: GIS Programmer Analyst

Contact_Address:

Address_Type: mailing and physical address
Address: 3190 Hammond Bay Road
City: Nanaimo
State_or_Province: BC
Postal_Code: V9T 6N7
Country: Canada

Contact_Voice_Telephone: 250-756-3363

Process_Step:

Process_Description: Krill data from the 2000-2004 fishing seasons were merged.