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Keyword: ecosystems

Fire regimes of ponderosa pine (Pinus ponderosa) ecosystems in Colorado: A systematic review and meta-analysis

Publications Posted on: September 26, 2019
Forest management, especially restoration, is informed by understanding the dominant natural disturbance regime. In many western North American forests the keystone disturbance is fire, and much research exists characterizing various fire regime parameters, although often only one or two parameters are addressed in individual studies.

Operationalizing ecological resilience concepts for managing species and ecosystems at risk

Publications Posted on: August 19, 2019
This review provides an overview and integration of the use of resilience concepts to guide natural resources management actions. We emphasize ecosystems and landscapes and provide examples of the use of these concepts from empirical research in applied ecology. We begin with a discussion of definitions and concepts of ecological resilience and related terms that are applicable to management.

Assessing water contamination risk from vegetation fires: Challenges, opportunities and a framework for progress

Publications Posted on: December 07, 2018
Water crises - defined as significant declines in water quality and quantity - top the global risks list compiled by the World Economic Forum (2015) that have the greatest potential impacts on society. Vegetation fires are amongst the most hydrologically significant landscape disturbances (Ebel & Mirus, 2014) and affect ~4% of the global vegetated land surface annually (Giglio, Randerson, & van der Werf, 2013).

Warming and warnings: Assessing climate change vulnerability in the Rocky Mountain Region

Publications Posted on: August 20, 2018
The Rocky Mountain Research Station recently published a general technical report addressing climate change vulnerability in the Rocky Mountain Region. This report, entitled Climate Change Vulnerability Assessment of Aquatic and Terrestrial Ecosystems in the US Forest Service Rocky Mountain Region, focuses on six ecosystems.

Global patterns of drought recovery

Publications Posted on: April 10, 2018
Drought, a recurring phenomenon with major impacts on both human and natural systems is the most widespread climatic extreme that negatively affects the land carbon sink. Although twentieth-century trends in drought regimes are ambiguous, across many regions more frequent and severe droughts are expected in the twenty-first century.

An effective and efficient assessment process

Publications Posted on: March 30, 2018
Depending on the agency, discipline, or audience, assessments supply data and information to address relevant policy questions and to help make decisions. If properly executed, assessment processes can draw conclusions and make recommendations on how to manage natural resources. Assessments, especially large ones, can be easily influenced by internal and external forces.

Tree demography records and last recorded fire dates from the Pinaleño Demography Project, Arizona USA

Documents and Media Posted on: November 06, 2017
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Restoration of temperate savannas and woodlands [Chapter 11]

Publications Posted on: October 04, 2017
Savannas and woodlands are open forest phases that occur along a gradient between grasslands and closed canopy forests. These ecosystems are characterized by open to nearly closed canopies of overstorey trees, relatively sparse midstorey and understorey woody vegetation, and dense, species-rich ground flora. In contrast to closed forests, the dominant and codominant trees in the canopy of open forests often have large, spreading crowns.

The extent of forest in dryland biomes

Publications Posted on: September 27, 2017
Dryland biomes cover two-fifths of Earth’s land surface, but their forest area is poorly known. Here, we report an estimate of global forest extent in dryland biomes, based on analyzing more than 210,000 0.5-hectare sample plots through a photo-interpretation approach using large databases of satellite imagery at (i) very high spatial resolution and (ii) very high temporal resolution, which are available through the Google Earth platform.

Global change effects on plant-insect interactions: The role of phytochemistry

Publications Posted on: August 29, 2017
Natural and managed ecosystems are undergoing rapid environmental change due to a growing human population and associated increases in industrial and agricultural activity. Global environmental change directly and indirectly impacts insect herbivores and pollinators.