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Submerged Aquatic Vegetation, Hudson River estuary, 1997
- Identification Information
- Data Quality Information
- Spatial Data Organization Information
- Spatial Reference Information
- Entity and Attribute Information
- Distribution Information
- Metadata Reference Information
- Identification Information
- Citation
- Originator
- Cornell Institute for Resource Information Sciences (Cornell IRIS)
- Publication Date
- 20021022
- Title
- Submerged Aquatic Vegetation, Hudson River estuary, 1997
- Geospatial Data Presentation Form
- vector digital data
- Publication Information
- Publication Place
- Annandale, New York
- Publisher
- Hudson River National Estuarine Research Reserve (NERR) and New York State Department of Environmental Conservation (NYSDEC)
- Online Linkage
- https://cugir.library.cornell.edu/catalog/cugir-007872
- Abstract
- Submerged aquatic vegetation (SAV) is an important habitat and site of primary production in many aquatic ecosystems but there was no baseline information on SAV extent or distribution in the tidal freshwater Hudson River. In 1994, a collaboration was initiated between the Institute of Ecosystem Studies (IES), the Hudson River National Estuarine Research Reserve/NYSDEC, the Cornell Laboratory for Environmental Applications of Remote Sensing (CLEARS), now the Cornell Institute for Resource Information Systems (IRIS) http://www.css.cornell.edu/iris/. In addtion, the New York Sea Grant, the Hudson River Estuary Program, and the National Oceanic and Atmospheric Administration (NOAA) are identified as partners. These groups provided diverse expertise to enable the first broad delimitation of SAV in the Hudson.
- Purpose
- The project was undertaken in two separate time periods with different sources of funding. In 1995, Phase I (Hyde Park to Castleton) was initiated with National Oceanic and Atmospheric Association and Hudson River Foundation funds. Subsequently in 1997, the remaining portions (Hastings to Hyde Park and Castleton to Troy) were undertaken in Phase II with New York. State Environmental Protection Funds through the Hudson River Estuary Program.
- Supplemental Information
- High quality, true color aerial photographs were acquired for Phase I on August 9, 1995 and Phase II on July 20, August 7 and August 18 in 1997 by AeroGraphics, Inc. of Bohemia, New York. Photographs were acquired with 60% forward lap and 30% side lap, at the nominal scale of 1:14,400 under ideal conditions within one hour of low tide and clear atmospheric conditions. Flight and mapping criteria followed the 1994 NOAA C-CAP protocols for SAV mapping. Stereoscopic aerial photographic coverage was available for the entire study area. The effective area of alternate aerial photographs was established and delineated on 3 mil matte acetate photo overlays. Major tributaries were not mapped with the exception of Schodack Creek. Shoreline Coverage-- The four-category classification system was developed through consultations among IES, HRNERR and IRIS. The four categories (numerical codes) are Open Water (VEGCODE=0), Upland/Intertidal (VEGCODE=1); Vallisneria americana (VEGCODE=2), and Trapa natans (VEGCODE=3). Of primary interest is Vallisneria americana, the predominant species of SAV. It is important to note that our Upland/Intertidal category includes intertidal marshes and mudflats which were largely exposed at time of photography. OW - Open Water VEGCODE=0" - Water areas including the Hudson River, tributary rivers, bays, coves with no indicators of submerged rooted vegetation, upland vegetation or dry land. UP/INT - Upland/Intertidal VEGCODE=1 - Dry land with or without upland vegetation or intertidal marsh vegetation. VA - Vallisneria americana (water or wild celery, tape grass) VEGCODE=2 - Beds of Vallisneria americana as well as beds of mixed vegetation including Vallisneria americana. TN - Trapa natans (water chestnut, water nut) VEGCODE=3 - Beds of Trapa natans, rooted with floating leaves. Linear Coverage-- During ground-truthing of polygon beds north of Albany, observations were made of frequent occurrences of very narrow linear beds of Vallisneria located adjacent to the shoreline. These features generally appeared to be in the two-to-three meter width size, and because they did not provide a signature were not visible on the color aerial photographs. In some instances, the plants were over-shadowed by tree cover along the shoreline. These features were subsequently mapped from the ground. Mapping of linear features, grab samples and GPS quality control functions resulted from a collaboration between Cornell IRIS and the Institute of Ecosystems Studies (IES). IES performed digitization; data merging and conversion performed by IRIS. Data have been converted from NAD27 to NAD83.
- Temporal Extent
- Currentness Reference
- Coverages are updated as amendments occur, or as errors in the data are discovered and corrected.
- Time Period
- Beginning
- 1995
- End
- 1997
- Bounding Box
- West
- -74.043644
- East
- -73.684859
- North
- 42.755276
- South
- 40.872863
- Theme Keyword
- Marine plants
- Seagrasses
- Estuarine plants
- Aquatic plants
- Marine plants
- American wild celery
- Water chestnut
- Aquatic weeds
- Theme Keyword Thesaurus
- LCSH
- Theme Keyword
- Vallisneria americana
- Trapa natans
- Submerged aquatic vegetation
- Theme Keyword Thesaurus
- none
- ISO Topic Category
- biota
- environment
- inlandWaters
- oceans
- Theme Keyword
- biology
- environment
- inland waters
- oceans
- Theme Keyword Thesaurus
- CUGIR Category
- Place Keyword
- Hudson River (N.Y. and N.J.)
- Hudson River Estuary (N.Y. and N.J.)
- Place Keyword Thesaurus
- LCSH
- Temporal Keyword
- Access Restrictions
- None
- Use Restrictions
- None
- Status
- Complete
- Maintenance and Update Frequency
- Not Applicable
- Point of Contact
- Contact Person
- Chuck Nieder
- Delivery Point
- Hudson River NERR c/o Bard College Field Station
- City
- Annandale
- State
- New York
- Postal Code
- 12504
- Contact Telephone
- 845-758-7013
- Contact Facsimile Telephone
- 845-758-7033
- Contact Electronic Mail Address
- mailto:wcnieder@gw.dec.state.ny.us
- Credit
- Hudson River National Estuarine Research Reserve (NERR) maintains the Hudson SAV data
- Native Data Set Environment
- Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcCatalog 8.1.1.649
- Data Quality Information
- Attribute Accuracy Report
- Delineation of the four land cover categories (Open Water-Vegcode=0; Upland/Intertidal-Vegcode=1; Vallisneria americana-Vegcode=2; Trapa natans-vegcode=3) was accomplished by the use of color pencil lines and labels drawn on the photo overlay as the stereo model was viewed using an Abrams 2X and 4X stereoscope or an Old Delft Scanning stereoscope at 6X.
- Logical Consistency Report
- The inventory included broad delimitation of submerged aquatic vegetation (SAV) beds and T. natans in the Hudson River using aerial photography for primary data collection. Field sampling of random points was used to verify the photo interpretation, generally following established protocols. In the case of SAV linear features, because their signatures were not detectable on the aerial photographs, were mapped in the field using a global positioning system. To verify presence of plants, randomly selected grab samples were taken at 141 field locations.
- Completeness Report
- The image analyst used her experience with key indicator signatures for object recognition and interpretation with true color aerial photographs in the SAV inventory. Vallisneria americana (water celery), for example, varies in color from light green-brown to dark green-brown to dark green-blue. The bed texture is smooth, velvety to fine bumpy; depends on plant density, species composition, and bed location at or below the water surface. The leaves of Trapa natans (water chestnut) are light green to yellow-green to creamy white. It appears to have smooth bed texture due to uniform leaf size and shape.
- Horizontal Positional Accuracy Report
- Coverages are accurate to the quality of the original topographic map
- Lineage
- Source
- Originator
- Cornell Institute for Resource Information Systems (Cornell IRIS)
- Publication Date
- 1994
- Title
- Hudson River Submerged Aquatic Vegetation Mapping
- Geospatial Data Presentation Form
- map
- Source Scale Denominator
- 14400
- Type of Source Media
- photographic reproductions of topographic quadrangle maps
- Source Temporal Extent
- Time Period Information
- Range of Dates/Times
- Beginning Date
- 1995
- Ending Date
- 1997
- Source Currentness Reference
- Publication Date
- Contribution
- Spatial and attribute information
- Spatial Data Organization Information
- Direct Spatial Reference Method
- Vector
- Point and Vector Object Information
- SDTS Terms Description
- SDTS Point and Vector Object Type
- Complete chain
- Point and Vector Object Count
- 1877
- SDTS Terms Description
- SDTS Point and Vector Object Type
- Label point
- Point and Vector Object Count
- 1217
- SDTS Terms Description
- SDTS Point and Vector Object Type
- Complete chain
- Point and Vector Object Count
- 28
- SDTS Terms Description
- SDTS Point and Vector Object Type
- Entity Point
- Point and Vector Object Count
- 82
- SDTS Terms Description
- SDTS Point and Vector Object Type
- Point
- Point and Vector Object Count
- 4
- SDTS Terms Description
- SDTS Point and Vector Object Type
- Point
- Point and Vector Object Count
- 176
- Spatial Reference Information
- Horizontal Coordinate System Definition
- Planar
- Grid Coordinate System
- Grid Coordinate System Name
- Universal Transverse Mercator
- Universal Transverse Mercator
- UTM Zone Number
- 18
- Transverse Mercator
- Scale Factor at Central Meridian
- 0.999600
- Longitude of Central Meridian
- -75.000000
- Latitude of Projection Origin
- 0.000000
- False Easting
- 500000.000000
- False Northing
- 0.000000
- Planar Coordinate Information
- Planar Coordinate Encoding Method
- coordinate pair
- Coordinate Representation
- Abscissa Resolution
- 0.000512
- Ordinate Resolution
- 0.000512
- Planar Distance Units
- meters
- Geodetic Model
- Horizontal Datum Name
- North American Datum of 1983
- Ellipsoid Name
- Geodetic Reference System 80
- Semi-major Axis
- 6378137.000000
- Denominator of Flattening Ratio
- 290.257222
- Entity and Attribute Information
- Entity Type
- Entity Type Label
- fin_shore83.aat
- Entity Type Definition
- Unspecified
- Entity Type Definition Source
- Unspecified
- Attributes
- FID
- Internal feature number. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- ESRI
- Shape
- Feature geometry. (Coordinates defining the features.)
- Definition Source
- ESRI
- FNODE#
- Internal node number for the beginning of an arc (from-node). (Whole numbers that are automatically generated.)
- Definition Source
- ESRI
- TNODE#
- Internal node number for the end of an arc (to-node). (Whole numbers that are automatically generated.)
- Definition Source
- ESRI
- LPOLY#
- Internal node number for the left polygon. (Whole numbers that are automatically generated.)
- Definition Source
- ESRI
- RPOLY#
- Internal node number for the right polygon. (Whole numbers that are automatically generated.)
- Definition Source
- ESRI
- LENGTH
- Length of feature in internal units. (Positive real numbers that are automatically generated.)
- Definition Source
- ESRI
- FINAL_SHORE83#
- Internal feature number. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- ESRI
- FINAL_SHORE83-ID
- User-defined feature number. (Whole numbers that are automatically generated.)
- Definition Source
- ESRI
- Entity Type
- Entity Type Label
- fin_savs83.pat
- Entity Type Definition
- Unspecified
- Entity Type Definition Source
- Unspecified
- Attributes
- FID
- Internal feature number. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- ESRI
- Shape
- Feature geometry. (Coordinates defining the features.)
- Definition Source
- ESRI
- Area
- Area of feature in internal unites squared. (Positive real numbers that are automatically generated.)
- Definition Source
- ESRI
- Perimeter
- Perimeter of feature in internal units. (Positive real numbers that are automatically generated.)
- Definition Source
- ESRI
- FIN_SAVS83#
- Internal feature number. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- ESRI
- FIN_SAV83-ID
- User defined feature number. (Unspecified.)
- Definition Source
- ESRI
- Type
- Unspecified. (Unspecified.)
- Definition Source
- ESRI
- Vegcode
- Unspecified. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- Unspecified
- Distribution Information
- Format Name
- E00
- Format Name
- metadata
- Format Name
- HTML metadata
- Distributor
- Albert R. Mann Library
- Online Access
- https://cugir-data.s3.amazonaws.com/00/78/72/cugir-007872.zip
- Online Access
- https://cugir-data.s3.amazonaws.com/00/78/72/fgdc.xml
- Online Access
- https://cugir-data.s3.amazonaws.com/00/78/72/fgdc.html
- Name
- Metadata Reference Information
- Metadata Date
- 20210913
- Metadata Contact
- Contact Information
- Contact Organization Primary
- Contact Organization
- Albert R. Mann Library
- Contact Address
- Address
- Albert R. Mann Library
- City
- Ithaca
- State or Province
- New York
- Postal Code
- 14853
- Country
- USA
- Contact Voice Telephone
- 607-255-5406
- Contact Electronic Mail Address
- mann-ref@cornell.edu
- Metadata Standard Name
- FGDC Content Standard for Digital Geospatial Metadata
- Metadata Standard Version
- FGDC-STD-001-1998