Dungeness Crab Commercial Fishery Kernel Density Estimate of Effort – partial logbook entry protocol 2011/12 - 2017/18, DLCD

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Identification Information:

Citation:

Citation Information:

Originator: Kelly Corbett, Oregon Department of Fish and Wildlife , Commercial Dungeness Crab Project Leader

Publication Date: 20211029

Publication Time: 050000

Title: Dungeness Crab Commercial Fishery Kernel Density Estimate of Effort – partial logbook entry protocol 2011/12 - 2017/18, DLCD

Geospatial Data Presentation Form: remote-sensing image

Description:

Abstract: This layer depicts the commercial Dungeness crab fishing effort expressed as the total number of pots pulled from 2011/12 to 2017/18 crab seasons. The Oregon commercial Dungeness crab fishery targets Dungeness crab using pots over sandy and muddy habitats off the Oregon coast in both state and federal waters between approximately 0-125 fathoms. The layer was developed using the kernel density function in ArcPro. Kernel density estimates were created using the line density spatial analyst tool. Commercial crab logbook pulled pots string data were used to create polylines that met the following criteria:Pulled pot strings that were missing spatial information were removedPulled pot strings that intersected land were removedPulled pot strings that exceeded the fishery depth (125 fathoms) were removedPulled pot strings that did not meet the rule of three unique vessels per 1km grid cell were removedThese filters removed 16% of the pulled pot strings for all seasons combined.The number of pots pulled per string were used as the population field with an output cell size of 1km and a search radius of 1500. Fishery logbook data are recorded on standardized data sheets by fishermen during their fishing operations. The logbooks are later turned over to ODFW for data entry and processing. All logbook data received by ODFW was matched with ODFW fish ticket information (i.e. trips) for these crab seasons (11/12 through 17/18). A thirty percent sub-sample of these trips (matched logs to fish ticket(s)) were then randomly selected for each port month group for entry in order to proportionally represent crab fishery activity throughout the season by port. Logbook submission non-compliance, poor data quality, sub-entering protocols and filtering for confidentiality are contributing factors to this data set representing less than 100% of the landings made during each crab season. Because the data are recorded by many independent sources, ODFW cannot guarantee the accuracy of all logbook data.

Purpose: This layer was developed for large-scale offshore wind energy development planning off of Oregon, and should be used for that purpose only. Use for offshore wind siting or other purposes would require additional analyses of the data.

Time Period of Content:

Time Period Information:

Multiple Dates/Times:

Single Date/Time:

Calendar Date: 20110501

Single Date/Time:

Calendar Date: 20071201

Currentness Reference: Commercail Dungeness Crab Season 2007/08 - 2010/11

Status:

Progress: Complete

Maintenance and Update Frequency: Unknown

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -124.772479

East Bounding Coordinate: -123.883591

North Bounding Coordinate: 46.543613

South Bounding Coordinate: 41.210289

Keywords:

Theme:

Theme Keyword Thesaurus: None

Theme Keyword: crab

Theme Keyword: KDE

Theme Keyword: Dungeness

Theme Keyword: ODFW

Theme Keyword: Oregon

Access Constraints: None

Use Constraints: This layer was developed for large-scale offshore wind energy development planning off of Oregon, and should be used for that purpose only.

Data Set Credit: If the user intends to use the data for purposes other than large-scale offshore wind energy planning, please contact: ODFW Marine Resources Program Kelly Corbett Commercial Dungeness Crab Project Leader kelly.c.corbett@odfw.oregon.gov

Native Data Set Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.0.12790

Spatial Data Organization Information:

Direct Spatial Reference Method: Vector

Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: GT-polygon composed of chains

Point and Vector Object Count: 9733

Raster Object Information:

Raster Object Type: Grid Cell

Row Count: 441

Column Count: 118

Spatial Reference Information:

Horizontal Coordinate System Definition:

Planar:

Map Projection:

Map Projection Name: WGS 1984 Web Mercator Auxiliary Sphere

Map Projection Parameters:

Other Projection’s Definition: PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Planar Coordinate Information:

Planar Coordinate Encoding Method: coordinate pair

Coordinate Representation:

Abscissa Resolution: 0.0001

Ordinate Resolution: 0.0001

Planar Distance Units: meter

Geodetic Model:

Horizontal Datum Name: D WGS 1984

Ellipsoid Name: WGS 1984

Semi-major Axis: 6378137.0

Denominator of Flattening Ratio: 298.257223563

Entity and Attribute Information:

Detailed Description:

Entity Type:

Entity Type Label: Dungeness_Crab_2011_2018_ODFW

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: DN

Attribute:

Attribute Label: Shape_Length

Attribute Definition: Length of feature in internal units.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute Label: Shape_Area

Attribute Definition: Area of feature in internal units squared.

Attribute Definition Source: Esri

Attribute Domain Values:

Unrepresentable Domain: Positive real numbers that are automatically generated.

Metadata Reference Information:

Metadata Date: 20211203

Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Oregon Department of Fish and Wildlife

Contact Person: Kelly Corbett

Contact Position: Commercial Dungeness Crab Project Leader

Contact Address:

Address Type: mailing and physical

Address: 2040 SE Marine Science Drive

City: Newport

State or Province: Oregon

Postal Code: 97365

Country: US

Contact Voice Telephone: (541)270-5083

Contact Electronic Mail Address: kelly.c.corbett@odfw.oregon.gov

Metadata Standard Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata Standard Version: FGDC-STD-001-1998

Metadata Time Convention: local time