[ISO_Topic_Category='IMAGERY/BASE MAPS/EARTH COVER']
Acadia National Park Vegetation Mapping Project - Spatial Vegetation DataEntry ID: USGS_NPS_AcadiaSpatialVeg
Abstract: ABSTRACT: The U.S. Geological Survey (USGS) Upper Midwest Environmental Sciences Center (UMESC) has produced the Vegetation Spatial Database Coverage (vegetation map) for the Acadia National Park Vegetation Mapping Project, USGS-NPS Vegetation Mapping Program (VMP). The vegetation map is of Acadia National Park (NP) and extended environs, providing 99,693 hectares (246,347 acres) of map data. Of ... this coverage, 52,872 hectares (130,650 acres) is non-vegetated ocean, bay, and estuary (53% of coverage). Acadia NP comprises 19,276 hectares (47,633 acres) of the total data coverage area (19%, 40% not counting ocean and estuary data). Over 7,120 polygons make up the coverage, each with map class description and, for vegetation classes, physiognomic feature information. The spatial database provides crosswalk information to all National Vegetation Classification System (NVCS) floristic and physiognomic levels, and to other established classification systems (NatureServe's U.S. Terrestrial Ecological System Classification, Maine Natural Community Classification, and the USGS Land Use and Land Cover Classification). This mapping project has identified 53 NVCS associations (vegetation communities) at Acadia National Park through analyses of vegetation sample data. These associations are represented in the map coverage with 33 map classes. With all vegetation types, land use classes, and park specific categories combined, 57 map classes define the ground features within the project area (58 classes including the class for no map data). Each polygon within the spatial database map is identified with one of these map classes. In addition, physiognomic modifiers are added to map classes representing vegetation to describe the vegetation structure within a polygon (density, pattern, and height). The spatial database was produced from the interpretation of spring 1997 1:15,840-scale color infrared aerial photographs. The standard minimum mapping unit (MMU) applied is 0.5 hectares (1.25 acres). The interpreted data were transferred and automated using base maps produced from USGS digital orthophoto quadrangles. The finished spatial database is a single seamless coverage, projected in Universal Transverse Mercator, Zone 19, with datum in North American Datum of 1983. The estimated overall thematic accuracy for vegetation map classes is 80%.
Purpose: PURPOSE: The Vegetation Spatial Database Coverage (vegetation map) was produced for the Acadia National Park Vegetation Mapping Project, USGS-NPS Vegetation Mapping Program. The focus of this metadata report centers on the vegetation map itself and not necessarily on vegetation classification or accuracy assessment. Although references are made to classification and accuracy assessment, their full ... documentation is found in separate metadata reports and in the Project?s technical report.
SUPPLEMENTAL INFORMATION: Of the 58 map classes used to define polygons of the vegetation map, 33 represent the 53 NVCS natural/semi-natural associations (vegetation communities) identified with this project, as defined by NatureServe. Another 3 map classes represent NVCS natural/semi-natural types at the alliance or formation level, describing beach and tidal zone vegetation. There are 5 map classes categorized as cultural vegetation, representing NVCS vegetation at the formation level, 3 of which fall under the cultivated/planted subgroup. 4 map classes represent variations of small islands with vegetation (project-derived to map those islands that are > 0.1 hectares but less than the MMU). The USGS Land Use and Land Cover Classification (level II) define 7 land use map classes, and 3 non-vegetated bodies of water. Another 2 map classes are project-derived to map 2 other non-vegetated bodies of water that did not fit in the USGS classification. 1 map class describes areas of no map data; areas purposely not mapped yet fall within the overlying exterior project boundary. A detailed listing of all map classes and their link to the various parent classification systems (plus listing of physiognomic modifiers that are added to map classes representing vegetation) is provided in the Entity and Attribute Information section of this metadata report. They are also listed in the Project?s technical report. --- The Vegetation Spatial Database Coverage is available in ArcInfo Export (e00), Spatial Database Transfer Standard, and Shapefile formats on the Project?s CD-ROM.
CURRENTNESS REFERENCE: ground condition
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: Vector
SDTS Point and Vector Object Type: G-polygon
Point and Vector Object Count: 7122
SPATIAL REFERENCE INFORMATION - GEODETIC MODEL
Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodedic 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 - Spatial Vegetation Data
Dataset Series Name: USGS-NPS Vegetation Mapping Program
Dataset Release Date: 2003-10-
Dataset Release Place: Denver, Colorado
Dataset Publisher: U.S. Geological Survey
Issue Identification: Acadia NP Vegetation Mapping Project
Data Presentation Form: map
Other Citation Details: The spatial database was prepared by the USGS 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.
Dataset DOI: 10.5066/F7JH3J49Online Resource: http://www1.usgs.gov/vip/acad/acad.zip
Start Date: 1997-05-27Stop Date: 1997-05-28
Quality ATTRIBUTE ACCURACY REPORT: Based on results of a thematic accuracy assessment, the estimated overall accuracy for map classes representing National Vegetation Classification System (NVCS) natural/semi-natural associations (vegetation communities) is 80%, with a kappa index of 79%.
LOGICAL CONSISTENCY REPORT: All polygon features were checked for topology and existence of label points ... using ArcInfo (Version 8.0.2). Each polygon begins and ends at the same point with the node feature. All nodes were checked for error so that there are no dangling features. There are no duplicate lines or polygons. All nodes were snapped together and polygons closed based on a specified tolerance. The tests for logical consistency were performed in ArcInfo.
COMPLETENESS REPORT: All data within the bounding coordinates are complete with polygons representing ground features at the time of aerial photographs. Each polygon is represented with an attribute in the form of a code that represents the map class and any special modifier classes when applicable. This attribute label is cross-referenced within the database attribute table, providing reference to other established classification systems, including all physiognomic and floristic levels of the NVCS. A 0.5-hectare (1.25 acre) minimum mapping unit was applied to all map classes, except for the small island categories, which were mapped to 0.1 hectares (0.25 acres).
HORIZONTAL POSITIONAL ACCURACY REPORT: Photointerpretation data were spatially referenced by method of transferring photointerpreted polygon data to USGS 1:12,000-scale orthophoto base maps (hard copy maps plotted from 3.75-minute digital orthophoto quadrangles, DOQ). The map coverage is assumed to have a positional accuracy meeting U.S. National Map Accuracy Standards for DOQ maps.
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, 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
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: 2003-10-31
Last DIF Revision Date: 2014-04-18