[ISO_Topic_Category='IMAGERY/BASE MAPS/EARTH COVER']
Acadia National Park Vegetation Mapping Project - Accuracy Assessment PointsEntry ID: USGS_NPS_AcadiaAccuracy
Abstract: ABSTRACT: The U.S. Geological Survey Upper Midwest Environmental Sciences Center (UMESC) has produced a vegetation spatial database coverage (vegetation map) for the Acadia National Park Vegetation Mapping Project, USGS-NPS Vegetation Mapping Program (VMP). Thematic accuracy requirements of the VMP specify 80% accuracy for each map class (theme) that represents National Vegetation Classification ... System (NVCS) associations (vegetation communities). The UMESC selected 728 field sites, all within Acadia National Park fee and easement lands, for a thematic accuracy assessment (AA) to the vegetation map. The sites were randomly generated, stratified to map class themes that represent NVCS natural/semi-natural vegetation communities using VMP standards. Certain modifications to the process were necessary to accommodate logistical challenges. Local botanists collected field data for 724 of the sites during the 1999 field season. Thematic AA used 688 sites. Sites not used for the analysis were due to the elimination of an entire map class because of irreconcilable classification concepts (19 sites), or to other reasons including unmanageable error with GPS coordinate, duplicate site location, and incomplete field data (17 sites). Regardless of their use in the analysis, all 724 AA sites collected are represented in the Accuracy Assessment Site Spatial Database.
Purpose: PURPOSE: The Accuracy Assessment Spatial Database provides spatially referenced locations that were selected for field assessment to support a statistical analysis of a thematic AA of the vegetation spatial database coverage for the Acadia National Park Vegetation Mapping Project, USGS-NPS Vegetation Mapping Program (see Cross Reference at the end of this section for more information on the ... vegetation map, the Project, and the VMP). This metadata report supports not only the Accuracy Assessment Site Spatial Database coverage, but also an overview of AA methods and analysis. For more documentation on the analysis methods and results, including the error contingency matrix, see the Project?s technical report.
SUPPLEMENTAL INFORMATION: The Accuracy Assessment Site Spatial Database is a geo-spatial point coverage. Item information within the spatial point coverage includes: ArcInfo default items, AA field site number, and X-Y coordinate (Easting-Northing) projected in Universal Transverse Mercator, Zone 19, with datum in North American Datum of 1983. Complete data for each AA site is preserved on hard copy data sheets, and digitally within the Project?s PLOTS database. The spatial database is available, both in ArcInfo Export (.e00) and Shapefile formats, on the Project?s CD-ROM. --- The UMESC performed the comparison analysis of the field AA data to the vegetation map. Based on results of this thematic accuracy assessment, the estimated overall accuracy for map classes representing NVCS natural/semi-natural vegetation communities is 80%, with a kappa index of 79%.
CURRENTNESS REFERENCE: publication date
SPATIAL DATA ORGANIZATION INFORMATION
Indirect Spatial Reference: Acadia National Park, the first national park to be established east of the Mississippi, is located on the coast of Maine primarily in Hancock County (with outlying areas in adjacent Knox County) and is situated on a large portion of Mount Desert Island as well as some adjacent mainland and island tracts, including the Schoodic Peninsula and Isle au Haut. The Park encompasses almost 48,000 acres of granite-domed mountains, woodlands, lakes and ponds, and ocean shoreline with nearby towns and villages including Bar Harbor, Northwest Harbor, Southwest Harbor, Seal Harbor, Bass Harbor, and Isle au Haut.
Direct Spatial Reference: Point
SDTS Point and Vector Object Type: Entity point
Point and Vector Object Count: 724
SPATIAL REFERENCE INFORMATION - 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: 298.257222
Data Set Citation
Dataset Originator/Creator: U.S. Geological Survey, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603
Dataset Title: Acadia National Park Vegetation Mapping Project - Accuracy Assessment Points
Dataset Series Name: USGS-NPS Vegetation Mapping Program
Dataset Release Date: 2003-10-
Dataset Release Place: Denver, Colorado
Dataset Publisher: U.S. Geological Survey, Center for Biological Informatics
Issue Identification: Acadia NP Vegetation Mapping Project
Data Presentation Form: map
Other Citation Details: This spatial database was prepared by the U.S. Geological Survey Upper Midwest Environmental Sciences Center for the USGS-NPS Vegetation Mapping Program. The Nature Conservancy, NatureServe, and Maine Natural Areas Program provided ecological and vegetation classification support.Online Resource: http://www1.usgs.gov/vip/acad/acadaa.zip
Start Date: 2003-10-01Stop Date: 2003-10-01
Quality Attribute accuracy was tested by manual comparison of the source with hard copy printouts. Attributes were further verified by visual inspection.
Tests for logical consistency are performed by digitizing software (ATLAS*GIS).
Dataset contains boundaries for only 340 of 375 park units. The missing units are typically very small (an acre or less) and ... don't show up on U.S. Geological Survey 7.5' quadrangles. Park boundaries are generally the legislative boundary only. No attempt has been made to include or exclude inholdings within the designated boundary. For some parks they are shown; others they are not shown.
Horizontal accuracy varies depending on the source of each boundary included in the National Park System Boundary Dataset. The source of the Scotts Bluff National Monument Boundary was: "RMRO Land Div. 1:6,000 1973 Land Status Map".
Access Constraints ACCESS CONSTRAINTS: None
DISTRIBUTION LIABILITY: The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (if available) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change ... over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data. The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service.
Use Constraints 1) Those using the database should understand the data and determine for themselves the fitness of the data prior to use. 2) For publication and dissemination, citations or credit should be given to the U.S. Geological Survey Center for Biological Informatics, the National Park Service, the U.S. Geological Survey Upper Midwest Environmental Sciences Center, The Nature Conservancy, NatureServe, and Maine Natural Areas Program. GIS software.
Data Set Progress
Distribution Format: HTML
Role: TECHNICAL CONTACT
Phone: (608) 783-6451
Fax: (608) 783-6066
Email: kevin_hop at usgs.gov
2630 Fanta Reed Road
City: La Crosse
Province or State: Wisconsin
Postal Code: 54603
USGS-NPS VEGETATION CHARACTERIZATION PROGRAM COORDINATOR USGS/CSS/CORE SCIENCE ANALYTICS AND SYNTHESIS
Role: TECHNICAL CONTACT
Phone: (303) 202-4220
Email: gs-b-npsveg at usgs.gov
Denver Federal Center, Building 810, MS 302
Province or State: Colorado
Postal Code: 80225
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2014-04-16
Last DIF Revision Date: 2016-11-18