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Submerged Aquatic Vegetation - SAV


Download Link: ftp://ftp.nconemap.com/outgoing/vector/sav.zip
Abstract: With funding from the Albemarle-Pamlico National Estuary Partnership (APNEP) and others [NC Division of Marine Fisheries (NC-DMF), National Oceanic and Atmospheric Administration (NOAA), and US Fish and Wildlife Service (US-FWS)], digital data of coastal submerged aquatic vegetation (SAV) was mapped by NC-DMF and Atkins for imagery years 2006-2008 with a planned update by the NC Department of Transportation for imagery years 2012-2013. In addition to its role as critical habitat for many aquatic fauna species, SAV is an important bio-indicator of environmental health because of its sensitivity to aquatic stressors. The ability to detect SAV is critical in understanding ecosystem health and effects of restoration and protection activities. As such, this dataset was developed and intended for research and/or planning. Because SAV distribution, abundance, and density varies seasonally and annually in response to climatic variability, large-scale SAV changes may occur and because of its dynamic nature, this data needs to be continually updated as monitoring continues in the APNEP region.
Purpose: This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS).
Supplemental Information: Mapping Extent: Visible SAV was mapped along the coast of North Carolina and northward into Back Bay, Virginia. This extent encompasses the coastal zone that lies within the APNEP regional boundary.
Publication Date: 2008
Originator: NCDENR, Albemarle-Pamlico National Estuary Partnership (APNEP)
Publisher: NCDENR, Albemarle-Pamlico National Estuary Partnership (APNEP)
Online Linkage: http://www.apnep.org
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 2006
Ending Date: 2008
Currentness Reference: Original release and last revision dates
Status:
Progress: Complete
Maintenance and Update Frequency: As needed
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -78.53
East Bounding Coordinate: -74.93
North Bounding Coordinate: 36.61
South Bounding Coordinate: 33.81
Contact Voice Telephone: (919) 707-8634
Grid Coordinate System Name: State Plane Coordinate System 1983
Horizontal Datum Name: North American Datum of 1983
Planar Distance Units: meters
Ellipsoid Name: Geodetic Reference System 1980
Attribute:
Attribute Label: CLASS
Attribute Definition: Type of classification for submerged aquatic vegetation polygon.
Attribute Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: AQUACULTURE
Enumerated Domain Value Definition: A polygon that consists of aquaculture vegetation.
Enumerated Domain Value Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: DENSE
Enumerated Domain Value Definition: A polygon with 70 ? 100% submerged aquatic vegetation coverage.
Enumerated Domain Value Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: DENSE_I
Enumerated Domain Value Definition: A polygon with 70 ? 100% submerged aquatic vegetation coverage and is also a waterfowl impoundment.
Enumerated Domain Value Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: PATCHY
Enumerated Domain Value Definition: A polygon with 5-70% submerged aquatic vegetation coverage.
Enumerated Domain Value Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: PATCHY_I
Enumerated Domain Value Definition: A polygon with 5 - 70% submerged aquatic vegetation coverage and is also a waterfowl impoundment.
Enumerated Domain Value Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: ABSENT
Enumerated Domain Value Definition: A polygon with 0 - 5% submerged aquatic vegetation coverage.
Enumerated Domain Value Definition Source: Albemarle-Pamlico National Estuary Partnership (APNEP)
Distribution Liability: NC-CGIA is charged with the development and maintenance of NC OneMap and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop this dataset may be reflected in the data supplied. The user must be aware of possible conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NC-CGIA does not support secondary distribution of this dataset without its current, compliant metadata record. The use of trade names or commercial products does not constitute their endorsement by NC-CGIA or North Carolina State Government.
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