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Keyword: ecosystem management

Fire effects on aquatic habitats and biota In Madrean-type ecosystems: Southwestern United States

Publications Posted on: November 03, 2020
Intense wildfires effectively remove vegetation, degrade watershed condition, and result in altered stream hydrographs and increased sediment input to streams. Case histories from five headwater streams in Arizona and New Mexico show effects of wildfire on aquatic habitats, fishes, and their food supply may be marked and long-lasting.

Nutrients in fire-dominated ecosystems

Publications Posted on: November 03, 2020
Fires can produce a wide range of changes in nutrient cycles of forest, shrub, and grassland ecosystems depending on fire severity, fire frequency, vegetation, and climate. These changes can be beneficial when fires increase the availability of plant nutrients, and deleterious when they volatilize, entrain ash in smoke columns, increase runoff of mineralized nutrients, or accelerate leaching from soil systems.

Effects of fire on riparian systems

Publications Posted on: November 03, 2020
Riparian systems are a small but important resource in the southwestern USA and northern Mexico because of the diverse, dynamic, and complex biophysical habitats they provide. Wildfires have always produced the most significant impacts on riparian hydrology, geomorphology, and biology. Prescribed fires have not been used to any great extent in the Madrean Province for vegetation management in riparian systems.

An analysis of drought in the Northern Great Plains: Summary of progress

Publications Posted on: November 03, 2020
Progress is summarized on development of tree-ring chronologies (Sieg et al., In press), preliminary analyses on the relationship between annual tree-ring widths and both precipitation and soil moisture (Ni 1993), and efforts to identify climatic regions (Bunkers 1993) and drought patterns (Bunkers et al. 1993) from climatic records.

Effects of fire on Madrean Province Ecosystems: A symposium proceedings; March 11-15, 1996; Tucson, AZ

Publications Posted on: November 02, 2020
This second conference on the Madrean Archipelago/Sky Island ecosystem brought together scientists, managers, and resource specialists from government, universities, and private organizations in the United States and Mexico to explore the effects of fire on Madrean Province ecosystem, and how fire can be incorporated in an ecosystem approach to both research and management.

Interior West global change workshop; April 25-27, 1995; Fort Collins, CO

Publications Posted on: November 02, 2020
Research accomplishments of the Interior West Global Change Program are outlined herein, and workshop participants discussed management implications of the results. Action to be taken now includes establishing monitoring systems to detect changes and guide management, and to maintain resilient ecosystems capable of responding successfully to change in any direction.

Simulation modeling of complex climate, wildfire, and vegetation dynamics to address wicked problems in land management

Publications Posted on: August 10, 2020
Complex, reciprocal interactions among climate, disturbance, and vegetation dramatically alter spatial landscape patterns and influence ecosystem dynamics. As climate and disturbance regimes shift, historical analogs and past empirical studies may not be entirely appropriate as templates for future management.

Ecosystem management and ecological restoration in the Anthropocene: integrating global change, soils, and disturbance in boreal and Mediterranean forests [Chapter 12]

Publications Posted on: June 25, 2020
Deforestation, rising temperatures, drought, fire and other ecological disturbances are reducing forest cover on much of the earth, and compromising the ability of forests to supply important ecosystem services.

Sustaining aspen in western landscapes: Symposium proceedings; 13-15 June 2000; Grand Junction, CO

Publications Posted on: June 22, 2020
The current status and trend of aspen is a topic of debate; some studies have claimed dramatic reductions in aspen stands while others have found no major changes. The actual picture of aspen forests across the West is variable, and the presence of conifers and ungulates in aspen may or may not indicate a progressive loss of aspen.

Restoration ecology: A new forest management paradigm, or another merit badge for foresters?

Publications Posted on: June 22, 2020
Focusing on the Southwest but raising questions that are more broadly applicable, we compare ecological restoration with conventional management regimes -- multiple-use management, ecosystem management, and managing for specific resourse objectives. That restoration assumes a holistic prespective and active intervention does not distinguish it from other approaches to achieving ecosystem health.