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Layer: eco_Gulf_of_Alaska (ID:8)

View In:   Map Viewer

Name: eco_Gulf_of_Alaska

Display Field: ECOREGION

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Merge of the Freshwater and Marine ecoregions for the United States:Freshwater Ecoregions of the World, (FEOW) provides a new global biogeographic regionalization of the Earth's freshwater biodiversity. Covering virtually all freshwater habitats on Earth, this first-ever ecoregion map, together with associated species data, is a useful tool for underpinning global and regional conservation planning efforts, particularly to identify outstanding and imperiled freshwater systems; for serving as a logical framework for large-scale conservation strategies; and for providing a global-scale knowledge base for increasing freshwater biogeographic literacy. This version of the FEOW, modified by The Nature Conservancy, includes additional tabular data describing Major Habitat Types (MHTs, similar to terrestrial biomes). These MHTs were developed by TNC and WWF, Inc., but have not undergone rigorous review and are as of yet unpublished. All ecoregions are nested within the eleven MHTs' boundaries.A biogeographic classification of the world's coastal and continental shelf waters following a nested hierarchy of realms, provinces and ecoregions. USERS PLEASE NOTE - shapefile does NOT accurately represent outer MEOW boundaries: As specified in the original publications, the boundaries in this shapefile have been extended out some 200 nautical miles from land (and this buffer is extended to include any additional marine areas less than 200metres in depth which lie beyond this distance). This outer boundary buffer is primarily drawn here to ease visibility of ecoregions in global and regional scale maps. Similarly the inland boundaries of the ecoregions extend far inland - a convention to ensure inclusion of any coastline and estuarine/lagoonal systems which may be derived from different map sources. As specified, the ecoregional classification relates primarily to coast and shelf biotas for which a 200m depth contour is a more accurate indicative boundary. It is therefore not an appropriate use of the data to calculate total ecoregion areas or generate other area or volumetric dependent statistics using these boundaries alone. A version of the shapefile cut to shelf areas will be released on this site by December 2007. TNC users please note: TNC has adopted the Marine Ecoregions of the World as our marine ecoregional boundaries, but in some cases around North America we are using older and slightly different boundaries for ecoregional planning. These other boundaries can be found in the marine ecoregional assessment layer directly below on this page. Download this data at: http://maps.tnc.org/

Copyright Text: The Nature Conservancy and World Wildlife Fund, Inc. The Major Habitat Types are an unpublished addition for this version of the FEOW provided for the purpose of global reporting by The Nature Conservancy.

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 1000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID_1

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Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 11/3/2020 7:53:06 PM

Schema Last Edit Date: 11/3/2020 7:53:06 PM

Data Last Edit Date: 11/3/2020 7:53:06 PM

Supported Operations:   Query   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat