Name: PhysiographicStrata_NWFSC_2012

Display Field: SubRegion

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This data layer represents the stratification used in various spatial summaries in the NWFSC Groundfish Essential Fish Habitat Synthesis Report. In order to evaluate habitat distribution and impacts in an ecologically meaningful way, we divided the West Coast into 10 geographic and depth regions, based on biogeographic considerations and depth zones. The biogeographic provinces included the Northern, Central, and Southern coastal areas, along with the Salish Sea. These provinces were selected with an eye toward oceanographic similarities and potential for larval exchange between regions. The Northern and Central provinces were divided at Cape Mendocino, the most prominent headland in California. Cape Mendocino is known to have distinctive oceanographic features such as strong upwelling and cyclonic eddies (Hayward and Mantyla 1990, Magnell et al. 1990), which may act to reduce larval exchange between the provinces and to create phylogeographic breaks (Kelly and Palumbi 2010). Point Conception separated the Central and Southern provinces. This area is widely recognized as an oceanographic convergence zone in which the temperate, southward flowing California Current meets the subtropical Southern California eddy. It is also thought to represent a significant phylogeographic break point for a variety of marine species (Pelc et al. 2009). The final biogeographic province, the Salish Sea, is a semi-enclosed body of marine water subject to strong terrestrial influences from several urban centers (including Vancouver, Canada, and Seattle, Washington, USA) and distinguished by an oceanographic regime unique from the rest of the West Coast (Sutherland et al. 2011). We also included three depth zones: a) Shelf (coastline to continental shelf break), b) Upper Slope (shelf break to 700 ftm, which is the shoreward boundary of the “Bottom Trawl Footprint Closure”), and Lower Slope (700 ftm to the EEZ seaward boundary).

Service Item Id: 242fdad2728b4b7ca8bef1d3ed877fb9

Copyright Text: NOAA Fisheries (NMFS), Northwest Fisheries Science Center (NWFSC), Fishery Resource Analysis and Monitoring Division (FRAM)

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MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

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:

XMin: -1.437843572383033E7
YMin: 3573423.536991589
XMax: -1.3034834544832949E7
YMax: 6274862.3621022105
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
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UniqueValueInfos:
• Value: shelf
  Label: Shelf
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• Value: upper slope
  Label: Upper Slope
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• Value: lower slope
  Label: Lower Slope
  Description:
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Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
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Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

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• SubRegion ( type: esriFieldTypeString, alias: SubRegion, length: 10 )
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Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

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