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The 2006 National Insect and Disease Risk Map (NIDRM) Project integrates
188 individual risk models constructed within a common, consistent
framework that accounts for regional variations in current and future
forest health. The 2006 risk assessment, conducted within the contiguous
United States and Alaska, provides a consistent, repeatable, transparent
process through which interactive spatial and temporal risk assessments
can be conducted at various scales to aid in the allocation of resources
for forest health management. This modeling process is intended to
increase the utilization of forest health risk maps within and outside
the National Forest System and encourage development of future risk
maps.
NIDRM is a composite, consisting of 188 individual risk models. These
models are built to portray the expected loss of basal area for each
agent and its corresponding host. That loss of basal area relates to
risk of mortality via the definition of risk: "the expectation
that, without remediation, 25 percent or more of the standing live basal
area (BA) of trees greater than 1 inch in diameter will die over the
next 15 years (starting in 2005) due to insects and diseases."
Data Provided By:
USDA Forest Service, Forest Health Technology Enterprise Team (FHTET)
Title:
A Multi-Criteria Framework for Producing Local, Regional, and National
Insect and Disease Risk Maps Credits:
Krist, F., Sapio, F., Tkacz, B. Publication Date:
2007 Online Linkages:
The USDA Forest Service shall not be held liable for improper or incorrect use of the geospatial data described and/or contained herein. These geospatial data and related graphics are not legal documents and are not intended to be used as such. The information contained in these geospatial data is dynamic and may change over time. The geospatial data are not better than the original sources from which they were derived. The user is responsible to use the geospatial data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The USDA Forest Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these geospatial data. Any products (hardcopy or electronic) utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way, (s)he is obligated to describe the types of modifications they have performed on the hardcopy map. The user specifically agrees not to misrepresent these data sets, nor to imply that changes made were approved by the USDA Forest Service. This disclaimer applies both to individual use of the geospatial data and aggregate use with other data.
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The Conservation Biology Institute (CBI) provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.