Parent Layer: Reference Layers

Name: Coral reef

Display Field: Hab_Desc

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The coral reef map displays data from multiple sources, providing the most accurate and current information for this region to date. The first step towards this final product began with mapping regional data which covered as many countries in the CLME region as possible. This included information from 3 separate datasets: (1.) For the insular Caribbean, the best available information was compiled by Brigham Young University students through a Nature Conservancy contract in 2011. This effort also began with a compilation of various datasets, supplemented with any original digitization efforts. This information was then checked against high resolution satellite imagery where available from Bing and Esri imagery basemaps. Errors and misrepresentations in the base information were modified through heads up digitization from the high resolution imagery. Omissions of coverage were corrected by creating new polygons to match visible coral structures. Outside of the insular Caribbean, (2.) the data from the Mesoamerican region was collected in 2007 as well as (3.) "Tropical Coral Reefs of the World," a 2011 dataset from the World's Resources Institute. For this dataset, reef locations were based on 500 meter resolution gridded data (converted to polygon) reflecting shallow, tropical coral reefs. Organizations contributing to this effort include the Institute for Marine Remote Sensing, University of South Florida (IMaRS/USF), Institut de Recherche pour le Développement (IRD), UNEP-WCMC, The World Fish Center and the World’s Resources Institute. The final composite dataset was compiled from multiple sources, incorporating products from the Millennium Coral Reef Mapping Project prepared by IMaRS/USF and IRD using imagery from 1999-2003.The regional data was then replaced with sub-regional, national or site level information where this information was available (and wasn't already used in the starting regional file) to obtain a finer scale product. For coral reefs, the following separate datasets were included: (1.) Grenada and St. Vincent and the Grenadines were replaced with data collected from the At the Water’s Edge Project and the ECMMAN project led by the Nature Conservancy. Union Island was created through a contract with Robert Gardiner & Gwilym Rowlands, National Coral Reef Institute, Oceanographic Center, for the AWE project. All of SVG except Union Island was created through object-oriented mapping on 2010 WorldView2 imagery through a contract with Sam Purkins in 2015. Grenada was created through object-oriented mapping on WorldView2 and Pleiades imagery through a contract with Sam Purkins in 2017. (2.) St. Kitts and Nevis were replaced with data collected from satellite and in-situ field data by the National Coral Reef Institute (NCRI) on behalf of The Nature Conservancy. (3.) USVI and Puerto Rico were replaced with data collected from NOAA's benthic habitat mapping effort in 1999. Twenty-one distinct benthic habitat types within eight zones were mapped using visual interpretation of orthorectified aerial photographs. (4.) St. Lucia was replaced with national level benthic habitat data created in 2016 using WorldView-3, Pleiades, and LandSAT8 satellite imagery through a contract with Sam Purkis. (5.) Jamaica was replaced with data collected from the 2009 National Ecological GAP Assessment. Conservation targets for this project were derived from a combination of ecological expert inputs, published literature, existing maps and other credible documentation. Pedro Bank was replaced with data created through object-oriented mapping on WorldView2 imagery through a contract with Sam Purkins in 2014. (6.) Antigua was replaced with national level benthic habitat data created in 2016 using WorldView-3, Pleiades, and LandSAT8 satellite imagery through a contract with Sam Purkis. For Barbuda, IKONOS-2 satellite imagery collected by GeoEye (now DigitalGlobe) in 2012 is the basis for the layer. The product was created through object-oriented mapping using Definiens eCognition software. Barbuda also had polygons added to the island from data originally created by Barry Devine for Antigua and Barbuda Resource Mapping and Protected Areas Project in 2004 and placed into the Environmental Information Management Advisory System (EIMAS). These extra polygons represent the coral outcrops in the northwest lagoon area. (7.) Monserrat was not available in regional data. Polygons for this island were from data created in 1996 and collected for The Nature Conservany's Sustained Marine and Coastal Biodiversity Threat Abatement in the Eastern Caribbean project. (8.) The eastern coast of Andros Island in the Bahamas was replaced with data created by The Nature Conservancy through a contract with the National Coral Reef Institute for the Global Environmental Facility-funded Integrating Watershed and Coastal Area Management in Caribbean Small Island Developing States (GEF-IWCAM) Project.The habitat layer was derived from RapidEye multispectral satellite data (RapidEye 2010). (9.) Île à Vache, Haiti was replaced with data collected for the Haiti Southwest Sustainable Development Project in 2012. The project utilized well established image-based remote sensing techniques and used a more advanced high-resolution satellite sensor (Worldview-2) and object-based mapping techniques. (10.)Dominica was replaced with national level benthic habitat data created in 2016 using WorldView-3, Pleiades, and LandSAT8 satellite imagery through a contract with Sam Purkis.

Copyright Text: This file was originally created under a contract from UNESCO for the purposes of the CLME Project in 2013. Since then, the file has been updated by TNC as new benthic data becomes available.

Default Visibility: false

MaxRecordCount: 100000

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: -8724431.0618
YMin: 1895894.361200001
XMax: -8427178.4554
YMax: 2106658.751600001
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [214, 133, 137, 255]
Outline:
Style: esriSLSNull
Color: [0, 0, 0, 255]
Width: 0
Label:
Description:
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
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:

• OBJECTID ( type: esriFieldTypeOID, alias: FID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Hab_Desc ( type: esriFieldTypeString, alias: Hab_Desc, length: 100 )
• Hab_Desc2 ( type: esriFieldTypeString, alias: Hab_Desc2, length: 150 )
• Source ( type: esriFieldTypeString, alias: Source, length: 254 )
• Data_Year ( type: esriFieldTypeString, alias: Data_Year, length: 20 )
• Government ( type: esriFieldTypeString, alias: Government, length: 50 )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )

Supported Operations:   Query   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata