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Ecosystem

Displaying 4861 - 4880 of 5991 results

Fire was arguably the most important forest and rangeland disturbance process in the Inland Northwest United States for millennia. Prior to the Lewis and Clark expedition, fire regimes ranged from high severity with return intervals of one to five…
Author(s): Paul F. Hessburg, James K. Agee
Year Published:

This FEIS species review synthesizes information on the relationship of Artemisia rigida (stiff sagebrush) to fire--how fire affects the species and its habitat, effects of the species on fuels and fire regimes, and fire management considerations.…
Author(s): Jack McWilliams
Year Published:

ABSTRACT: This paper describes use of BIOPAK to calculate size classes of live fuels for shrubs and herbs. A library of equations to estimate such fuels in the Pacific Northwest and northern Rocky Mountains is presented and used in an example. These…
Author(s): Carl E. Fiedler, Charles E. Keegan, Todd A. Morgan, Christopher W. Woodall
Year Published:

Twentieth-century wildfire suppression and land management policies have promoted biomass accumulations in some ecosystems in the western United States where wildfire is a natural and necessary element. These changes have fueled large, stand-…
Author(s): Anthony L. Westerling, Thomas W. Swetnam
Year Published:

The size and severity of the fires in Yellowstone National Park in 1988 surprised ecologists and managers alike. Much has been learned about the causes and consequences of crown fires from studies of the Yellowstone fires, and some results were…
Author(s): Monica G. Turner, William H. Romme, Daniel B. Tinker
Year Published:

Wildfire hazard abatement is one of the major reasons to use prescribed burning. Computer simulation, case studies, and analysis of the fire regime in the presence of active prescribed burning programs in forest and shrubland generally indicate that…
Author(s): Paulo M. Fernandes, Herminio S. Botelho
Year Published:

Increased runoff and erosion commonly occur after wildfires with the onset of precipitation events. Various erosion mitigation treatments are often used after wildfires to reduce flooding and sedimentation. The effectiveness of these treatments has…
Author(s): Peter R. Robichaud, Robert E. Brown
Year Published:

This FEIS species review synthesizes information on the relationship of Linaria dalmatica, Linaria vulgaris (Dalmatian toadflax, yellow toadflax) to fire--how fire affects the species and its habitat, invasiveness of the species, effects of the…
Author(s): Kristin L. Zouhar
Year Published:

How have changes in land management practices affected vegetation patterns in the greater Yellowstone ecosystem? This question led us to develop a deterministic, successional, vegetation model to 'turn back the clock' on a study area and…
Author(s): Alisa L. Gallant, Andrew J. Hansen, John S. Councilman, Duane K. Monte, David W. Betz
Year Published:

Fire management addressing postfire erosion and aquatic ecosystems tends to focus on short-term effects persisting up to about a decade after fire. A longer perspective is important in understanding natural variability in postfire erosion and…
Author(s): Grant A. Meyer, Jennifer L. Pierce
Year Published:

What is the geological or ecological context that earth scientists, biologists, and resource managers use to understand large-scale watershed disturbances, such as fires, mass wasting, and floods? We address this question using a field study of post…
Author(s): Lee E. Benda, Daniel Miller, Paul Bigelow, Kevin Andras
Year Published:

The effectiveness of applying landscape level fuel treatments is analysed for four different landscape conditions by using both simulation and optimization. The four landscape conditions in the Bitterroot National Forest, Montana, represent a…
Author(s): Jimmie D. Chew, J. Greg Jones, Christine Stalling, Janet Sullivan, Steve Slack
Year Published:

FIREMON is a fire effects monitoring and inventory protocol developed for interagency use through a grant from the Joint Fire Science Program. It is designed to help the fire manager determine how plots should be placed on the landscape and what…
Author(s): Duncan C. Lutes, Robert E. Keane, John F. Caratti, Larry J. Gangi, Carl H. Key, Nathan C. Benson, Steve Sutherland
Year Published:

Landscape patterns of quaking aspen (Populus tremuloides) seedling occurrence and abundance were studied after a rare recruitment event following the 1988 fires in Yellowstone National Park, Wyoming, USA. Belt transects (1 to 17 km in…
Author(s): Monica G. Turner, William H. Romme, Gerald A. Tuskan, Rebecca A. Reed
Year Published:

Behavior and biology of many forest pests are tied to major forest disturbances and succession. Fire is the principal disturbance in the forests of the western United States. Fire regimes as well as distribution and behavior of forest pests and…
Author(s): Geral I. McDonald, Jeffrey S. Evans, Thomas M. Rice, Eva K. Strand
Year Published:

This publication summarizes the findings in the 400-page companion document, Hayman Fire Case Study, Gen. Tech. Rep. RMRS-GTR-114. This summary document's purpose is to convey information quickly and succinctly to a wide array of audiences. In 2002…
Author(s): Russell T. Graham
Year Published:

In this study, Patriotta examines the ways in which an organization’s workers experience the “everyday routines, interaction, and events that constitute both individual and social practices”. He studies the narratives that are told within an…
Author(s): Gerardo Patriotta
Year Published:

Predictive capacity is needed to anticipate the consequences of global change. Along with the computational challenges inherent in accounting for uncertainly in models of ecological and physical processes related to global change, we face…
Author(s): Carol A. Brewer, Louis J. Gross
Year Published:

Recently there has been discussion in the National Wildland Fire Coordination Group (NWCG) fire danger and fire weather working teams about the impact of observations from different anemometer heights and more importantly, averaging times, on inputs…
Author(s): Larry S. Bradshaw, Eugene Petrescu, Isaac C. Grenfell
Year Published:

Despite the numerous values of riparian areas and the recognition of fire as a critical natural disturbance, few studies have investigated the behavior, properties, and influence of natural fire in riparian areas of the western USA. Riparian areas…
Author(s): Kathleen A. Dwire, J. Boone Kauffman
Year Published: