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Layer: Proportion (ID: 50)

Parent Layer: Non-Catch Shares Hook-and-Line (2002-2010)

Name: Proportion

Display Field: PERTOTLEN

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Abstract: This data layer depicts the proportion of fishing effort for commercial non-catch shares hook-and-line gear off the U.S. West Coast from 1 Jan 2002 to 31 Dec 2010. Records of hook-and-line gear fishing locations were compiled from one source: observer records from the West Coast Groundfish Observer Program (WCGOP) database. The WCGOP database includes records of trips for vessels participating in the following sectors: limited entry sablefish-endorsed primary season, limited entry non-sablefish endorsed, and open access fixed gear. Annual WCGOP coverage of fixed gear sectors can be found online at: https://www.nwfsc.noaa.gov/research/divisions/fram/observation/index.cfm. Because all fishing operations are not observed, neither the maps nor the data can be used to characterize the fishery completely. We urge caution when utilizing these data due to the complexity of groundfish management and fleet harvest dynamics.The polygon layer is a vector layer with values representing the proportion of all lines coastwide intersecting each 10 x 10 min cell. The benefit of this output over depicting lines themselves is that all data can be represented, while still ensuring confidentiality of individual fishing locations.This spatial summary of fishing effort was developed from lines connecting gear set and retrieval points. Although fishing does not occur continuously along a fixed gear set (e.g., longline, pots), some amount of fishing does occur between set and retrieval points. For that reason, we treated fixed gear sets similarly to trawl tows. This summary is not intended to quantify total impact of fishing on either benthic or pelagic habitats. Purpose: The main purpose of this data layer is to help inform the National Marine Fisheries Service Biological Opinion on Continuing Operation of the Pacific Coast Groundfish Fishery (NMFS 2012). In 2011, new regulations governing the limited entry bottom trawl and midwater trawl fisheries led to the induction of individual fishing quotas (IFQs). Primary goals of IFQ management included decreased bycatch and increased catch accountability, profitability, and efficiency. In the shoreside bottom trawl fishery, permit holders with IFQ and a trawl endorsement can use multiple gear types (although not within the same trip), including bottom trawl, midwater trawl, hook-and-line gear, and pot gear. These management changes could impact fishing effort in trawl sectors, as well as alter fixed gear fishing effort by providing a new opportunity for fixed gear fishing activity and potential competition between IFQ and other fixed gear sectors. This data layer displays fishing effort to assess these potential changes. NMFS (National Marine Fisheries Service). 2012. Continuing Operation of the Pacific Coast Groundfish Fishery - Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion and Section 7(a)(2) "Not Likely to Adversely Affect" Determination. PCTS Number: NWR-2012-876. 194 p. Credit: Fishery Resource Analysis and Monitoring Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration

Copyright Text: Fishery Resource Analysis and Monitoring Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates

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