REA Data Disclaimer 

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Intended Data Use

Rapid Ecoregional Assessments are intended to provide a landscape-scale perspective of the ecological conditions and trends of an ecoregion, identifying important resource values and patterns of environmental change that may not be evident when managing smaller, local land areas.

REAs look across all lands in an ecoregion to identify regionally important habitats for fish, wildlife, and species of concern. REAs then gauge the potential of these habitats to be affected by four overarching environmental change agents: climate change, wildfires, invasive species, and development (both energy development and urban growth).

In addition, REAs establish baseline ecological data to gauge the effect and effectiveness of future management actions. In this way, REAs provide a foundation for an adaptive management approach that enables implementation strategies to adjust to new information and changing conditions.

Data Limitations

Data resulting from Rapid Ecoregional Assessments have limitations that the user should be aware of, including the following:


  • REAs are rapid, usually completed in less than 18 months.  This rapidity inherently limits the assessments and its resulting data, for example:
    • REAs only use existing available data.  Data gaps were sometimes identified during REA development which limited the level or scope of analysis that could be conducted.  The user should read the final report to learn more about existing data gaps which may have affected resulting data and models.  REAs are designed to be updated when new or improved data are available.
    • The complexity and completeness of the geoprocessing models, designed to assess conservation elements and associated change agents, were sometimes constrained by data gaps and/or time constraints.  Users should consult the final report to discover what components, processes, and thresholds were used in the models and gauge the quality of the model results.  All geoprocessing models used in the REAs are based on comprehensive conceptual models, unconstrained by data gaps and time constraints; this design allows geoprocessing models to be improved upon in the future.
  • REAs evaluate a limited number of conservation elements, derived from the larger set of initially-identified resource values.  Thus, they do not evaluate or incorporate all ecological elements or processes that occur with an ecoregion.  Users should read the final report to determine which conservation elements and change agents were included in the assessment.
  • REAs are assessments only, evaluating status and potential changes in status for selected conservation elements.  Users should consider status data as estimates and predictions of current and future status, respectively; rather than definitive measures. 
  • REAs are based largely on remotely sensed data, all which have some level of error.  This error is inherited and compounded throughout data processing.  The user should read the metadata associated with the final data sets as well as the source data sets which served as inputs to understand the level of certainty that can be assumed.

Data Disclaimer

The following disclaimer statements are applied to the BLM data generated under contract for the Rapid Ecoregional Assessment.  For Public records (external distribution) and those discretionary/enhanced records (electronic products available for online viewing and/or hardcopy output available to the public) the following disclaimers shall be used:

Distributor Liability
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.

Access Constraints
None, these data are considered public domain.

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.

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