[ISO_Topic_Category='IMAGERY/BASE MAPS/EARTH COVER']
Southwest Exotic Plant Information Clearinghouse (SWEPIC)Entry ID: USGS_SBSC_SWEPIC
Abstract: The Southwest Exotic Plant Mapping Program (SWEMP) is a collaborative effort between the United States Geological Survey and federal, tribal, state, county and NGO partners in the southwest. This project is an ongoing effort to compile and distribute regional data on the occurrence of non-native invasive plants in the southwestern United States. The database represents the known sites (represented ... by a point location, i.e. site) of non-native invasive plant infestations within Arizona and New Mexico, and adjacent portions of California, Colorado, Nevada and Utah. These data, collected from 1911 to 2006, represent the field observations of various state, federal, tribal and county agencies, along with some specimen data from Herbaria. The SWEMP database is published at least once a year and consists of a compilation of all data submitted up to the date of publication.
Purpose: his dataset was created to provide a regional perspective on non-native invasive plant distributions. It can be used to assist land managers, as well as the public, to review the locations and extent of reported infestations. These data can ultimately help guide management strategies and policies for the control of non-native invasive plant species. All plant species in the database are non-native as defined by the USDA PLANTS database 2007; the extent to which they are invasive has not been determined.
Data Set Citation
Dataset Originator/Creator: Kathryn Thomas and Patricia Guertin. U.S. Geological Survey, Southwest Biological Science Center (USGS-SBSC)
Dataset Title: Southwest Non-native Invasive Plant Database
Dataset Release Date: 2007
Data Presentation Form: Maps and DataOnline Resource: http://sbsc.wr.usgs.gov/cprs/research/projects/swepic/maincprs.asp
Start Date: 1911-03-14Stop Date: 2006-12-14
AGRICULTURE > AGRICULTURAL PLANT SCIENCE > WEEDS, NOXIOUS PLANTS OR INVASIVE PLANTS
BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > INVASIVE SPECIES
CLIMATE INDICATORS > BIOSPHERIC INDICATORS > INVASIVE SPECIES
BIOSPHERE > VEGETATION > VEGETATION COVER
BIOSPHERE > VEGETATION > VEGETATION SPECIES
Quality SWEMP operates as a collaborative effort between the USGS and contributing parties. The responsibilities of the USGS are to provide data compilation and quality control, regional database management, and regional database distribution. Data collection is the responsibility of the collaborators. Therefore, an estimate of accuracy regarding the plant identifications and assignments of attribute ... information cannot be reported. Collaborator representatives are asked to provide quality checks prior to submittal. However, once submitted, USGS personnel quality checked all collaborator data for reporting errors, formatting errors and for any occurrences of repeat records. As part of the quality check the data was entered into ArcMap and reviewed for general spatial accuracy (i.e. if data were collected in Prescott National Forest, those data should occur within the Prescott National Forest boundary).
Dataset was quality checked in a spatial environmental and through reviewing data entry. Data was obtained by field observations using map, GPS with or without differential correction, or a PLGR unit, and from herbarium and collector specimen labels. Each species occurring at a site represents an infestation; hence, a site with several non-native invasive plant species will be represented by several records in the database. All infestations in the database are identified by geographic coordinates and a site code unique to the infestation site. Non-native invasive plants grown in horticultural or agricultural context are not included; however, if these species are found growing outside those contexts they may be included in the database. Where the context for these species could not be determined, they were maintained in the database.
Records containing errors, which could not be corrected by the collaborator, were omitted from the database. All species were included which are designated as non-native to the southwest in the USDA PLANTS database (http://plants.usda.gov/).
Use Constraints Although these data have been processed successfully on a computer system at the USGS-SBSC-Colorado Plateau Research Station and the USGS-SBSC-Sonoran Desert Research Station, no warranty expressed or implied is made regarding the accuracy or utility of these data on any other 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 these data and aggregate use with other data. It is strongly recommended that these data be directly acquired from a U.S. Geological Survey server, and not indirectly through other sources that may have altered these data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Geological Survey, USGS-SBSC-Sonoran Desert Research Station and USGS-SBSC-Colorado Plateau Research Station shall not be held liable for improper or incorrect use of these data described and/or contained herein.
Role: TECHNICAL CONTACT
Email: kathryn_a_thomas at usgs.gov
USGS Sonoran Desert Research Center 125 Biological Sciences East, Bldg 43 University of Arizona
Province or State: Arizona
Postal Code: 85721
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2014-03-21
Last DIF Revision Date: 2016-01-27