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Ecosystem

Displaying 5721 - 5740 of 6037 results

Selected forage species were sampled during the first and second summers after autumn prescribed burning of three sites in southeastern Idaho. They were analyzed for in vitro dry matter digestibility, protein, calcium, and phosphorus. This aspen…
Author(s): Norbert V. DeByle, Philip J. Urness, Deborah L. Blank
Year Published:

Ammonium-based fire retardants are important in managing wildfires, but their use can adversely affect water quality. Their entry, fate, and impact were studied in five forest streams. Initial retardant concentrations in water approached levels…
Author(s): Logan A. Norris, Warren L. Webb
Year Published:

Shrub frequency, cover, and height, and herb frequency and cover were measured on plots from two Douglas-fir habitat types in three cutting units. The plots were measured prior to helicopter yarding and broadcast burning and then 1, 2, 5, and 10…
Author(s): Kathy Geier-Hayes
Year Published:

Fire affects spawning areas and food habitat in streams by indirectly influencing waterflow, nutrients, erosion, sedimentation, debris, and water temperature. The response of vegetation following fire is the most important factor affecting aquatic…
Author(s): James K. Brown
Year Published:

Maintaining an ecosystem shaped primarily by natural geological and ecological processes is a primary goal in Yellowstone National Park (YNP) (Houstori 1971). Thus, one important question about the fires of 1988 is whether they were really natural:…
Author(s): William H. Romme, Don G. Despain
Year Published:

Over the past three days we have been presented with the results of a most impressive quantity and quality of research on the effects of fire on watersheds. My attempt to summarize these papers will hardly do them justice, but hopefully will…
Author(s): Nicholas Dennis
Year Published:

Thirty-day forecasts of fire potential are needed, and can be computed using a variety of monthly fire weather indices. But which indices are most related to monthly fire severity? Correlation analysis was used to determine the relationships between…
Author(s): M. H. McCutchan, William A. Main
Year Published:

This FEIS species review synthesizes information on the relationship of Alnus rubra (red alder) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species' taxonomy,…
Author(s): Ronald Uchytil
Year Published:

This FEIS species review synthesizes information on the relationship of Alnus rhombifolia (white alder) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species'…
Author(s): Janet L. Fryer
Year Published:

Adjacent headwater streams were monitored for postfire shade, summer streamflow and maximum water temperature following the 40,000 ha Silver Complex fire in southern Oregon. Average postfire shade (30 percent) for the three streams was considerably…
Author(s): Michael Amaranthus, Howard Jubas, David Arthur
Year Published:

Few studies have examined the effect of fire on the aquatic biota, and none has adequately addressed major aspects of aquatic ecosystem function. Most of the research has examined the effects of fire on water chemistry (Schindler et al. 1980,…
Author(s): G. Wayne Minshall, James T. Brock, John D. Varley
Year Published:

This FEIS species review synthesizes information on the relationship of Salix lemmonii (Lemmons willow) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species'…
Author(s): Ronald Uchytil
Year Published:

This FEIS species review synthesizes information on the relationship of Sambucus nigra subsp. cerulea (blue elderberry) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the…
Author(s): Marilyn F. Crane
Year Published:

This FEIS species review synthesizes information on the relationship of Rubus ursinus (trailing blackberry) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species'…
Author(s): D. A. Tirmenstein
Year Published:

Fire has been used inconsistently to manage native and tame grasslands in the Northern Great Plains (NGP) of the north-central U.S. and south-central Canada, particularly the grasslands found in prairies, plains, agricultural land retirement…
Author(s): Kenneth F. Higgins, Arnold D. Kruse, James L. Piehl
Year Published:

Describes use of increment borers for interpreting fire history in coniferous forests. These methods are intended for use in wilderness, parks, and other natural areas where sawing cross-sections from fire-scarred trees is prohibited.
Author(s): Stephen W. Barrett, Stephen F. Arno
Year Published:

Crisis situations are often complicated by the very behaviors people use to manage crisis. Enactment suggests that how people think about the work they do shapes how they behave toward that work. This process allows people to see certain aspects of…
Author(s): Karl E. Weick
Year Published:

This FEIS species review synthesizes information on the relationship of Andropogon gerardii (big bluestem) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species'…
Author(s): Ronald Uchytil
Year Published:

Airborne measurements have been made in the smokes from large fires of standing coniferous trees and logging debris, standing chaparral, fallen jack pine, and wheat stubble. Panicle emission factors, particle size distributions, optical properties…
Author(s): Lawrence F. Radke, Dean A. Hegg, Jaime H. Lyons, Charles A. Brock, Peter V. Hobbs, Raymond E. Weiss, Rei A. Rasmussen
Year Published:

Monthly average soil temperatures in a burned aspen stand ranged from 0 to 8 °F higher than in the unburned stand at depths to 12 inches for a site in southeastern Idaho. From June through August the first year after burning, soil temperatures were…
Author(s): Roger D. Hungerford
Year Published: