You are here

Keyword: landscape

Assessing soil microbial communities associated with tree health in a western white pine (Pinus monticola) stand

Publications Posted on: September 30, 2020
At a landscape level, measurements of forest health can be a fluid statistic as it relates to the specific goals of management, which differ from stand to stand (Crann et al. 2015). As a result, analyses of trees at the individual or stand level may discover previously unknown factors that influence specific tree health metrics.

Development of a Severe Fire Potential map for the contiguous United States

Publications Posted on: August 17, 2020
Burn severity is the ecological change resulting from wildland fires. It is often mapped by using prefire and postfire satellite imagery and classified as low, moderate, or high. Areas burned with high severity are of particular concern to land managers and others because postfire vegetation, soil, and other important ecosystem components can be highly altered.

Relative species richness and community completeness: Birds and urbanization in the Mid-Atlantic States

Publications Posted on: December 16, 2019
The idea that local factors govern local richness has been dominant for years, but recent theoretical and empirical studies have stressed the influence of regional factors on local richness. Fewer species at a site could reflect not only the influence of local factors, but also a smaller regional pool.

Higher temporal variability of forest breeding bird communities in fragmented landscapes

Publications Posted on: December 16, 2019
Understanding the relationship between animal community dynamics and landscape structure has become a priority for biodiversity conservation. In particular, predicting the effects of habitat destruction that confine species to networks of small patches is an important prerequisite to conservation plan development.

Landscape applications of machine learning: Comparing random forests and logistic regression in multi-scale optimized predictive modeling of American marten occurrence in northern Idaho, USA [Chapter 9]

Publications Posted on: December 04, 2018
The American marten (martes americana) is a species that is dependent on old conifer forest at middle to high elevations and is highly sensitive to habitat loss and fragmentation in a scale dependent fashion (e.g., Hargis et al. 1999; Wasserman et al. 2012a, b), and forest management is often influenced by considerations of how management will affect extent and pattern of marten habitat.

United States state-level population estimates: Colonization to 1999

Publications Posted on: August 01, 2018
The U.S. landscape has undergone substantial changes since Europeans first arrived. Many land use changes are attributable to human activity. Historical data concerning these changes are frequently limited and often difficult to develop. Modeling historical land use changes may be neccessary. We develop annual population series from first European settlement to 1999 for all 50 states and Washington D.C. for use in modeling land use trends.

Using an agent-based model to examine forest management outcomes in a fire-prone landscape in Oregon, USA

Publications Posted on: September 25, 2017
Fire-prone landscapes present many challenges for both managers and policy makers in developing adaptive behaviors and institutions. We used a coupled human and natural systems framework and an agent-based landscape model to examine how alternative management scenarios affect fire and ecosystem services metrics in a fire-prone multiownership landscape in the eastern Cascades of Oregon.

Terrestrial Ecological Unit Inventory technical guide

Publications Posted on: December 27, 2016
The purpose of this technical guide is to provide specific direction and guidance for conducting Terrestrial Ecological Unit Inventory (TEUI) at the landscape and land-unit scales. TEUI seeks to classify ecological types and map terrestrial ecological units (TEUs) to a consistent standard throughout National Forest System lands. The objectives, policies, and responsibilities for TEUI are contained in Forest Service Manual (FSM) 1940. U.S.

Calculating the configurational entropy of a landscape mosaic

Publications Posted on: September 16, 2016
Applications of entropy and the second law of thermodynamics in landscape ecology are rare and poorly developed. This is a fundamental limitation given the centrally important role the second law plays in all physical and biological processes. A critical first step to exploring the utility of thermodynamics in landscape ecology is to define the configurational entropy of a landscape mosaic.

Soils [Chapter 5]

Publications Posted on: May 12, 2016
This report describes the soils of the Lost Lake, West Glacier Lake, and East Glacier Lake watersheds of GLEES and presents the methods used in conducting both the field and laboratory work. In addition, general statements about the nature of the mapping units used in making the soil maps are provided.