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Keyword: statistics

Doing more with the core: Proceedings of the 2017 Forest Inventory and Analysis (FIA) Science Stakeholder Meeting; 2017 October 24- 26; Park City, UT

Publications Posted on: October 17, 2017
The Forest Service’s Forest Inventory and Analysis Program (FIA) is the primary source of information about our forests’ status and trends. A network of nationally consistent field observations forms FIA’s core, and active collaboration with clients and peer organizations ensures that the resulting inventory remains agile, comprehensive, and relevant.

The Fire History Analysis and Exploration System (FHAES)

Science Spotlights Posted on: August 19, 2015
We are developing a suite of tools (FHAES: the Fire History Analysis and Exploration System) to calculate the statistics and provide graphics used to describe disturbance – particularly fire – regimes and their relationship to climate. Other disturbances that can be described with these tools include insect infestations, avalanche patterns, flooding, and cold snaps.

The RMRS Raster Utility: Tools for spatial and statistical analysis in GIS

Projects Posted on: May 08, 2015
The RMRS Raster Utility is an object oriented coding library that facilitates a wide range of spatial and statistical analyses using novel statistical methods in a newly developed Function Modeling framework. This work includes: New tools for spatial and statistical analysis Readily available, easy to use, free, GIS software add-in Website describing software functionality and applications Code repository for others to integrate into their work Tu​torials and sample analyses  

Climate shield cold-water refuge streams for preserving native trout

Documents and Media Posted on: March 18, 2015
Crowd-sourced biological datasets contributed by multiple agencies were coupled with high-resolution NorWeST stream temperature scenarios to delineate invasion resistant, climate refuge streams across >450,000 stream kilometers in the northwestern U.S. for two native trout species of concern — Bull Trout and Cutthroat Trout.Document Type: Briefing Papers

Climate shield cold-water refuge streams for native trout

Projects Posted on: March 18, 2015
The Climate Shield website hosts geospatial data and related information on specific locations of cold-water refuge streams for native cutthroat trout and bull trout across the American West. Forecasts about the locations of refugia could enable the protection of key watersheds, be used to rally support among multiple stakeholders, and provide a foundation for planning climate-smart conservation networks that improve the odds of preserving native trout populations through the 21st century. 

Tools for spatial statistical modeling on stream networks (STARS and SSN)

Projects Posted on: January 22, 2015
Spatial statistical models for streams provide a new set of analytical tools that can be used to improve predictions of physical, chemical, and biological characteristics on stream networks. The Spatial Tools for the Analysis of River Systems (STARS) and Spatial Stream Network (SSN) models are unique because they account for patterns of spatial autocorrelation among locations based on both Euclidean and in-stream distances

Trends in standing biomass in Interior West forests: Reassessing baseline data from periodic inventories

Publications Posted on: September 17, 2013
Trends in U.S. forest biomass and carbon are assessed using Forest Inventory and Analysis (FIA) data relative to baseline assessments from the 1990s. The integrity of baseline data varies by state and depends largely on the comparability of periodic versus annual forest inventory data.

Is lodgepole pine mortality due to mountain pine beetle linked to the North American Monsoon?

Publications Posted on: September 17, 2013
Regional precipitation patterns may have influenced the spatial variability of tree mortality during the recent mountain pine beetle (Dendroctonus ponderosa) (MPB) outbreak in the western United States. Data from the Forest Inventory and Analysis (FIA) Program show that the outbreak was especially severe in the state of Colorado where over 10 million lodgepole pines (Pinus contorta Dougl. Ex Loud.) succumbed to MPB between 2002 and 2009.

Mapping aspen in the Interior West

Publications Posted on: September 17, 2013
Quaking aspen (Populus tremuloides Michx.) is a critical species that supports wildlife and livestock, watershed function, the forest products industry, landscape diversity, and recreation opportunities in the Interior West (Bartos and Campbell 1998).

A comparison of FIA plot data derived from image pixels and image objects

Publications Posted on: February 06, 2013
The use of Forest Inventory and Analysis (FIA) plot data for producing continuous and thematic maps of forest attributes (e.g., forest type, canopy cover, volume, and biomass) at the regional level from satellite imagery can be challenging due to differences in scale.