BCMCA_hu_CommercialFish_halibut_marxan_data

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
International Pacific Halibut Commission / BC Marine Conservation Analysis, a Tides Canada Initiatives Project
Publication_Date: January 2012
Title: BCMCA_hu_CommercialFish_halibut_marxan_data
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
Online_Linkage:
\\data-server\gis\BCMCA\HumanUse\Repository\Commercial Fish\data\BCMCA_hu_CommercialFish_Halibut_data.shp
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:
This data set represents the spatial distribution of the commercial halibut fishery within the International Pacific Halibut Commission's statistical areas for British Columbia and was provided by the IPHC. The statistical areas were digitized by the IPHC and most vertices coincide with the historical IPHC areas. For accurate digitization, additional vertices were inserted by referring to NOAA (National Oceanic and Atmospheric Administration) and CHS (Canadian Hydrographic Survey) Mercator projected charts.
The BCMCA used the statistical areas to join the aggregated catch information from 1991-2006, also provided by the International Pacific Halibut Commission. Catch data is assigned to statistical areas using (in order of priority); commercial logbook data (collected by the IPHC), validation logs/fish tickets, or the landing port. Statistical areas are the highest level of resolution at which information is released to the public.
For each statistical area, information is included for the years 1991 - 2006 on the sum of the landed weights and the average catch per unit effort (CPUE). Because a minimum of 3 vessels must report catch in each statistical area before catch information can be made public, average CPUE in some statistical areas is calculated based on a subset of the years 1991 - 2006 (i.e., only those years where 3 vessels or more reported catch).
CPUE is in net pounds per standard 100-hook skate, with all conventional and snap gear effort pooled. (In the IPHC assessment a simple coastwide average of conventional and snap gear CPUE is used.) Where there are fewer than 15 sets in the data for a statistical area, no CPUE is calculated. Also, CPUE is calculated from commercial fishing logbooks, so where logbook information is missing, no CPUE is calculated.
Purpose:
The purpose of the data is to display complete, up-to-date information on commercial Halibut fishing activities along the coast of British Columbia for the BCMCA Atlas and Marxan analyses. 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:
The catch information is based on IPHC statistical areas (60nm). These areas often do not correspond to DFO subareas.
IPHC cannot supply information on any finer scale. The halibut resource is assessed as a coastwide spawning stock. Surveys are conducted for stock assessment in each of the IPHC major areas but because halibut undertake extensive spawning migrations annually, local production is not generated locally (most B.C. halibut spawn in the Gulf of Alaska and southeast Alaska; similarly many Washington and Oregon halibut probably spawn in B.C.)
Information is also available from our standardized stock assessment setline surveys on a station by station basis. This is the only high-resolution spatial data that is available. It is distributed in file format as well as a hard copy.
Additional information concerning the IPHC statistical areas can be found in IPHC Technical Report No. 49 (ISBN: 0579-3920)
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1991
Ending_Time: 2006
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Annually
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -134.801164
East_Bounding_Coordinate: -124.390629
North_Bounding_Coordinate: 56.051980
South_Bounding_Coordinate: 47.716201
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: Halibut
Theme_Keyword: Catch
Theme_Keyword: Statistical Areas
Theme_Keyword: International Pacific Halibut Commission
Theme_Keyword: IPHC
Theme_Keyword: Marxan
Place:
Place_Keyword: BC
Place_Keyword: Pacific Ocean
Temporal:
Temporal_Keyword: 1991
Temporal_Keyword: 1992
Temporal_Keyword: 1993
Temporal_Keyword: 1994
Temporal_Keyword: 1995
Temporal_Keyword: 1996
Temporal_Keyword: 1997
Temporal_Keyword: 1998
Temporal_Keyword: 1999
Temporal_Keyword: 2000
Temporal_Keyword: 2001
Temporal_Keyword: 2002
Temporal_Keyword: 2003
Temporal_Keyword: 2004
Temporal_Keyword: 2005
Temporal_Keyword: 2006
Access_Constraints:
Data can be requested from the International Pacific Halibut Commission or accessed via their website.
Use_Constraints: These shapefiles have no legal or official status.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: BC Marine Conservation Analysis
Contact_Electronic_Mail_Address: info@bcmca.ca
Data_Set_Credit:
Data from: International Pacific Halibut Commission. Processing (link tabular database to statistical areas) by BCMCA.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.3.1.3500
Data_Quality_Information:
Logical_Consistency_Report: These data should be considered to be accurate to 0.01 degree.
Completeness_Report:
See the Marine Atlas of British Columbia, p143, for reviewer comments and caveats of use
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.01. Longitudes are given to the nearest 0.01. Latitude and longitude values are specified in Decimal degrees.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: IPHC
Publication_Date: Nov 1, 2004
Title: GOA_Den
Other_Citation_Details:
Statistical areas came from the shape file GOA_Den provided by the IPHC.
Statistical area documentation can be found in IPHC Technical Report No. 49 (<http://www.iphc.washington.edu/halcom/pubs/techrep/tech0049.pdf>) and GIS shapefiles are available at <http://www.iphc.washington.edu/halcom/GIS/statareas.htm>.
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Nov. 2004
Source_Information:
Source_Citation:
Citation_Information:
Originator: International Pacific Halibut Commission
Title: 1980-2007_2B_CPUE.xls
Other_Citation_Details:
In general, the IPHC has a confidentiality policy that limits the distribution of halibut catch data to, at minimum, the IPHC statistical area level. Catch and effort information at this level can be found in a document that was prepared for the Canadian Department of Fisheries and Oceans. This document is posted on the IPHC website at: <http://www.iphc.washington.edu/halcom/commerc/2bcpue2008.pdf>
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1980
Ending_Date: 2007
Process_Step:
Process_Description:
The IPHC provided 1980-2007_2B_CPUE.xls, a table of catch and catch per unit effort in statistical areas for BC from 1980 to 2007.
Source_Used_Citation_Abbreviation: 1980-2007_2B_CPUE.xls
Process_Date: December 16, 2008
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Thomas Kong
Contact_Organization: International Pacific Halibut Commission
Contact_Voice_Telephone: 206 634-1838 ext 232
Contact_Electronic_Mail_Address: tom[at]iphc.washington.edu
Process_Step:
Process_Description:
"-" values in the landings weight field were replaced with 0. A new integer CPUE field was created to replace the "-" values in the original CPUE field with null so as not to affect the average calculations of CPUE.
Process_Date: April 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Lindsay McBlane
Contact_Organization:
Parks Canada, Western and Northern Service Centre (on behalf of the BCMCA)
Contact_Position: Resource Conservation Technician
Process_Step:
Process_Description:
A select query was performed to select only those records from 1991 - 2006. These records were grouped by management area and the sum of the weights and the average of the CPUE were calculated (sum_landed_avg_CPUE_1991_2006) for each management area.
Data from before 1991 was dropped as it was before the ITQ period of the fishery. Data from 2007 was dropped because most areas had no catch data reported for 2007. The decisions to drop these years were made by Neil Davis (BCMCA Human Use Data Coordinator) in conjunction with Carrie Robb (BCMCA Data Manager) Feb. 27, 2009.
Process_Date: April 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Lindsay McBlane
Contact_Organization:
Parks Canada, Western and Northern Service Centre (on behalf of the BCMCA)
Contact_Position: Resource Conservation Technician
Process_Step:
Process_Description:
The individual datasets for Salmon (Chinook, Chum, Coho, Pink, Sockeye), Dungeness Crab, Geoduck, Green Sea Urchin, Groundfish Trawl, Halibut, Herring Roe, Humpback Shrimp, Krill, Pink Shrimp, Prawn, Red Sea Urchin, Sablefish (longline and trap), Sardines, Schedule II, Sea Cucumber, Sidestripe Shrimp and Rockfish Hook and Line were processed following a defined set of parameters and then combined together to provide a per planning unit catch for each individual fishery.
Processing Steps for data are as follows: 1. Have a clean PU file with only the Unit_ID 2. Make sure projection is in NAD 83 Environment Albers 3. Union the PU file with the fishery 4. Remove any polygons outside the study area 5. Add New_Area field + calculate the area in square meters 6. Determine Frequency (Toolbox>Analysis>Stats>Frequency) where the input is the unioned shapefile, the frequency file is FID_commer and the summary field is New_Area 7. Join the Frequency table to the Union Output (FID_commer to FID_commer) 8. Export joined file with new name (use _v2 at the end) 9. Add new field (Catch_PU) as a Double 10. Calculate the Catch per PU: Catch x New_Area / New_Area1 11. Open up the dbf in Excel and save as .xlsx. 12. Insert Pivot Table, Select Unit_ID as the row label and Catch_PU as the ? values. Then select all values for Catch_PU and copy and paste special (values) into new excel worksheet. 13. In Excel, generate full commercial fisheries table by selecting the values from the individual excel worksheets, providing the proper coding, and ensuring the numbers are correct. 14. Save completed fisheries database in Excel as .xlsx, Open the table in Microsoft Access, and re-save as a .dbase IV 15. Open the new .dbf in ArcInfo and join the commercial fisheries table to a clean PU file
Source_Used_Citation_Abbreviation: C:\DOCUME~1\CARRIE~1\LOCALS~1\Temp\xml26.tmp
Process_Date: January 2012
Process_Time: 13241700
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Lindsay McBlane
Contact_Organization: Parks Canada, Western and Northern Service Centre (for BCMCA)
Contact_Position: Resource Conservation Technician
Process_Step:
Process_Description:
Planning units with a value for the halibut fishery were selected and exported to a new file. Extraneous fields removed.
Process_Date: January 2012
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: BCMCA
Contact_Position: Data Manager
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: 39278
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
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:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
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: BCMCA_hu_CommercialFish_halibut_marxan_data
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: UNIT_ID
Attribute_Definition: planning unit ID
Attribute:
Attribute_Label: AREA
Attribute_Definition: planning unit area
Attribute:
Attribute_Label: COST
Attribute_Definition: planning unit cost
Attribute:
Attribute_Label: X514
Attribute_Definition: catch within the planning unit
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Electronic_Mail_Address: info@bcmca.ca
Contact_Instructions: See www.bcmca.ca for distribution details
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 2.429
Available_Time_Period:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1991
Ending_Date: 2006
Metadata_Reference_Information:
Metadata_Date: 20120117
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Carrie Robb
Contact_Organization: British Columbia Marine Conservation Analysis
Contact_Position: Data Manager
Contact_Address:
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
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Tue Jan 17 14:10:07 2012