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Ecosystem

Displaying 4281 - 4300 of 5957 results

Considerable experimental and theoretical work has been done on general concepts regarding nonnative species and disturbance, but experimental research on the effects of fire on nonnative invasive species is sparse. We begin this chapter by…
Author(s): Kristin L. Zouhar, Jane Kapler Smith, Steve Sutherland
Year Published:

ANNOTATION: The potential markets for forest residues can be classified into four primary categories. This paper deals with each of these categories separately, and attempts to indicate some of the major influences which are expected to change the…
Author(s): Rhodes Yepsen
Year Published:

Now in paperback, this breakthrough book on the new psychological science of time by one of the most influential living psychologists—the New York Times bestselling author of The Lucifer Effect—and his research partner launched on the front page of…
Author(s): Philip Zimbardo, John Boyd
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Noxious weeds are a serious problem that is spreading across the West. Herbicides such as Picloram have proven to be powerful tools in reducing weed invaders, although use of this tool has often produced unintended consequences. Broadleaf herbicides…
Author(s): Lisa-Natalie Anjozian
Year Published:

Until late in the nineteenth century, magnificent ponderosa pine forests blanketed much of the inland West. They covered perhaps 30 million acres, an area the size of New York state, spreading across the mountains of New Mexico, Arizona, and…
Author(s): Stephen F. Arno, Lars Ostlund, Robert E. Keane
Year Published:

We characterised the remarkable heterogeneity following the large, severe fires of 1988 in Yellowstone National Park (YNP), in the northern Rocky Mountains, Wyoming, USA, by focussing on spatial variation in post-fire structure, composition and…
Author(s): Tania L. Schoennagel, Erica A. H. Smithwick, Monica G. Turner
Year Published:

This FEIS species review synthesizes information on the relationship of Arctostaphylos rubra (red fruit bearberry) to fire--how fire affects the species and its habitat, effects of the species on fuels and fire regimes, and fire management…
Author(s): Janet L. Fryer
Year Published:

Bromus tectorum (cheatgrass) is an invasive annual that occupies perennial grass and shrub communities throughout the western United States. Bronus tectorum exhibits an intriguing spatio-temporal pattern of invasion in low elevation ponderosa pine…
Author(s): Michael J. Gundale, Steve Sutherland, Thomas H. DeLuca
Year Published:

Roughly 25,000 acres of grassland in the National Wildlife Refuges of North Dakota and eastern Montana are treated every year with prescribed fire, mostly on northern mixed-grass prairie. Although this shrinking ecosystem is fire-adapted, there have…
Author(s): Marjie Brown
Year Published:

This is an article geared towards children's education. It encourages kids to go outside and match plants with their underground root structures, ie 'buried treasure.' There are answers provided on page 12.
Author(s): Jane Kapler Smith, Nancy E. McMurray
Year Published:

Alluvial fan deposits are widespread and preserve millennial-length records of fire. We used these records to examine changes in fire regimes over the last 2000 years in Yellowstone National Park mixed-conifer forests and drier central Idaho…
Author(s): Jennifer L. Pierce, Grant A. Meyer
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The USDA Forest Service is progressing from a land management strategy oriented around timber extraction towards one oriented around maintaining healthy forested lands. The healthy Forest Initiative promotes the idea of broadscale forest thinning…
Author(s): Carter Stone, Andrew T. Hudak, Penelope Morgan
Year Published:

Biome-scale disturbances by eruptive herbivores provide valuable insights into species interactions, ecosystem function, and impacts of global change. We present a conceptual framework using one system as a model, emphasizing interactions across…
Author(s): Kenneth F. Raffa, Brian H. Aukema, Barbara J. Bentz, Allan L. Carroll, Jeffrey A. Hicke, Monica G. Turner, William H. Romme
Year Published:

This FEIS species review synthesizes information on the relationship of Nucifraga columbiana (Clark's nutcracker) to fire--how fire affects the species and its habitat, effects of the species on fuels and fire regimes, and fire management…
Author(s): Nancy E. McMurray
Year Published:

The fire hazard in many western forests is unacceptably high, posing risks to human health and property, wildlife habitat, and air and water quality. Cost is an inhibiting factor for reducing hazardous fuel, given the amount of acreage needing…
Author(s): Rhonda L. Mazza
Year Published:

This state-of-knowledge review of information on relationships between wildland fire and nonnative invasive plants can assist fire managers and other land managers concerned with prevention, detection, and eradication or control of nonnative…
Author(s):
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Nitrogen (N) limits productivity in many coniferous forests of the western US, but the influence of post-fire structure on N cycling rates in early successional stands is not well understood. We asked if the heterogeneity created by downed wood and…
Author(s): Kristine L. Metzger, Erica A. H. Smithwick, Daniel B. Tinker, William H. Romme, Teri C. Balser, Monica G. Turner
Year Published:

Thurber's needlegrass (Achnatherum thurberianum [Piper] Barkworth) is an important component of many sagebrush communities in the Intermountain West. Prescribed fall burning is often implemented in sagebrush plant communities to mimic historic…
Author(s): Kirk W. Davies, Jonathan D. Bates
Year Published:

This FEIS species review synthesizes information on the relationship of Dryopteris campyloptera, Dryopteris carthusiana, Dryopteris expansa, Dryopteris intermedia (mountain woodfern, spinulose woodfern, spreading woodfern, fancy fern) to fire--how…
Author(s): Gregory T. Munger
Year Published:

Little is known about the disturbance history of low-elevation forest and steppe vegetation in the western United States, nor about the relative importance of climate and human activity in shaping present-day plant communities. We analyzed pollen…
Author(s): Karen Jacobs, Cathy L. Whitlock
Year Published: