• BLM REA COP 2010 Inter-Mountain Basins Mixed Salt Desert Scrub (LANDFIRE BpS): Change Agents

    Metadata Updated: March 17, 2021

    This dataset shows historic change agents and disturbance types within the historic distribution of this vegetation community as mapped in the LANDFIRE Biophysical Settings (BpS v1.0) dataset. The BpS provides an estimate of the distribution of this community under pre- Euroamerican settlement reference conditions (including historic fire regimes). While based on biophysical gradients and limited training plot data, with resultant inaccuracies of prediction, the BpS provides the best available estimate of the distribution of this vegetation community. Existing vegetation classifications are inadequate for estimating the distribution of this community for the purposes of this analysis, because they only provide a single, recent snapshot in time of vegetation conditions that are often variable over time (i.e., a recently burned area may be classified as low cover herbaceous in the existing vegetation, but occupying a site that over long periods of time is occupied by shrubland). Change agents are those factors that have converted this vegetation into another state, such as conversion to urban areas. These were extracted from the LANDFIRE EVT, NLCD Impervious Surfaces, BLM GTLF (roads), current predicted invasive vegetation dataset (produced for this REA), and LANDFIRE Succession Class dataset to express the following change agent types: development, agriculture, invasive vegetation, and uncharacteristic native vegetation. Disturbances are those factors that have occurred within this system in recent years, that may have modified the vegetation community composition, structure, and dynamics. These disturbances may be part of the natural disturbance regime and thus beneficial for the ecological dynamics of a site, or they may be uncharacteristic due to increases of fire frequency (in arid shrublands), fuel buildup due to legacy effects of fire suppression, or presence of invasive vegetation. These disturbances were extracted from USGS fire perimeters (2000-2010), LANDFIRE Disturbance datasets (1999-2008), and BLM Pinyon-Juniper treatments. Caution should be exercised in interpreting this dataset. The BpS provides one possible estimate of the historic distribution of this vegetation community, but may contain inherent inaccuracies and biases (and thus over- or under-represent the distribution of this community). The change agents are based on measures of existing vegetation and landscape condition, and may not contain all factors that have affected this vegetation community. In particular, long-term conversion to other vegetation communities was not addressed in this analysis (overlays of BpS and existing vegetation datasets generally do not indicate long-term versus short-term vegetation conversions). Not all disturbances that affect this community may have been detected in the available datasets used to estimate disturbance. Overall, this dataset should be taken to provide one estimate of the net changes that have affected this vegetation community historically and recently.

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    License: No license information was provided.

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    Metadata Date September 15, 2016
    Metadata Created Date March 17, 2021
    Metadata Updated Date March 17, 2021
    Reference Date(s) January 1, 2011 (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from BLM-COP

    Additional Metadata

    Resource Type Dataset
    Metadata Date September 15, 2016
    Metadata Created Date March 17, 2021
    Metadata Updated Date March 17, 2021
    Reference Date(s) January 1, 2011 (publication)
    Responsible Party Conservation Biology Institute (Point of Contact)
    Contact Email
    Access Constraints Use Constraints: These data are provided by Bureau of Land Management (BLM) "as is" and may contain errors or omissions. The User assumes the entire risk associated with its use of these data and bears all responsibility in determining whether these data are fit for the User's intended use. 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, and both scale and accuracy may vary across the data set. These data may not have the accuracy, resolution, completeness, timeliness, or other characteristics appropriate for applications that potential users of the data may contemplate. The User is encouraged to carefully consider the content of the metadata file associated with these data. These data are neither legal documents nor land surveys, and must not be used as such. Official records may be referenced at most BLM offices. Please report any errors in the data to the BLM office for which it was obtained. The BLM should be cited as the data source in any products derived from these data. Any Users wishing to modify the data should describe the types of modifications they have performed. The User should not misrepresent the data, nor imply that changes made were approved or endorsed by BLM. This information may be updated without notification., Access Constraints: None, these data are considered public domain
    Bbox East Long -106.800516
    Bbox North Lat 41.169207
    Bbox South Lat 35.489930
    Bbox West Long -114.411164
    Coupled Resource
    Frequency Of Update notPlanned
    Licence The BLM assumes no responsibility for errors or omissions. No warranty is made by the BLM as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data; nor shall the act of distribution to contractors, partners, or beyond, constitute any such warranty for individual or aggregate data use with other data. Although these data have been processed successfully on computers of BLM, no warranty, expressed or implied, is made by BLM regarding the use of these data on any other system, or for general or scientific purposes, nor does the fact of distribution constitute or imply any such warranty. In no event shall the BLM have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of the use or reliance on the geographic data or arising out of the delivery, installation, operation, or support by BLM.
    Metadata Language eng; USA
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True

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