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Forest Sciences Commons™

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2008

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Articles 91 - 120 of 271

Full-Text Articles in Forest Sciences

Effects Of Gregariousness, Conspicuousness, And Novelty On Blue Jay (Cyanocitta Cristata) Learned Avoidance And Stimulus Generalization Of Unpalatable Prey, Joyce M. Dykema Apr 2008

Effects Of Gregariousness, Conspicuousness, And Novelty On Blue Jay (Cyanocitta Cristata) Learned Avoidance And Stimulus Generalization Of Unpalatable Prey, Joyce M. Dykema

Avian Cognition Papers

I examined a variety of factors hypothesized to be important in the evolution and maintenance of aposematism. Aposematism occurs when prey individuals advertise their toxic or otherwise aversive nature to potential predators via evolved conspicuous signals. I conducted three experiments in which blue jays (Cyanocitta cristata) were allowed to search a printed grayscale pixilated background for grayscale pixilated moths in an open room. I manipulated moth appearance and food reward, and recorded jay predation on the varying moth stimuli. In my first experiment, I repeated Alatalo & Mappes’ (1996) study examining the effects of prey gregariousness, or grouping, …

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A Reassessment Of Avian Assemblages Along The Lakes Corridor In The Atherton Tablelands, North Queensland, Shaina N. Stewart Apr 2008

A Reassessment Of Avian Assemblages Along The Lakes Corridor In The Atherton Tablelands, North Queensland, Shaina N. Stewart

Independent Study Project (ISP) Collection

Forest fragmentation is the process by which large areas of continuous forest are replaced by foreign ecosystems that restrict native growth to isolated patches. Biota remaining within these fragmented environments often suffer consequences that stem from reduced forest area. Wildlife corridors—linear patches of habitat that connect remnant fragments—have frequently been proposed to alleviate fragmentation effects by facilitating biotic movement between forest patches. Initiated in 1998, the Lakes Corridor on the Atherton Tablelands in North Queensland, Australia, connects the two formerly isolated sections of Crater Lakes National Park with the goal of promoting wildlife dispersal between them. This study monitored avian …

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Topographic Factors Affecting The Tree Species Composition Of Forests In The Upper Piedmont Of Virginia, Rachael C. Brown, Todd S. Fredericksen Apr 2008

Topographic Factors Affecting The Tree Species Composition Of Forests In The Upper Piedmont Of Virginia, Rachael C. Brown, Todd S. Fredericksen

Virginia Journal of Science

There are many factors that influence forest species composition and many are linked to topographical features. This study, conducted on the Ferrum College campus in the Upper Piedmont Physiographic Province of Virginia revealed three major forest types associated with topographic factors using cluster analysis and detrended correspondence analysis . The first type of forest occurred mostly on northeastern slopes on toe slope topographic positions and was mainly composed of tulip tree (Liriodendron tulipifera) and red maple (Acer rubrum). The second type of forest was found on shoulder and side slope positions and was composed mostly of …

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Gordie News, April 2008, West Chester University Of Pennsylvania Apr 2008

Gordie News, April 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

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Fire Effects On Gambel Oak In Southwestern Ponderosa Pine-Oak Forests, Scott R. Abella, Peter Z. Fule Apr 2008

Fire Effects On Gambel Oak In Southwestern Ponderosa Pine-Oak Forests, Scott R. Abella, Peter Z. Fule

Public Policy and Leadership Faculty Research

Gambel oak (Quercus gambelii) is ecologically and aesthetically valuable in southwestern ponderosa pine (Pinus ponderosa) forests. Fire effects on Gambel oak are important because fire may be used in pine-oak forests to manage oak directly or to accomplish other management objectives. We used published literature to: (1) ascertain historical fire regimes in pine-oak forests, (2) discern prescribed burning effects on Gambel oak survival and diameter growth, and (3) provide suggestions for using fire to manage oak. Frequent fire is part of Gambel oak’s historical environment, as historical fire return intervals often averaged less than 10 years in pine-oak forests. More …

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Gauging The Acceptability Of Fuels Management: A Matter Of Trust, Mark W. Brunson Apr 2008

Gauging The Acceptability Of Fuels Management: A Matter Of Trust, Mark W. Brunson

Articles

There is a significant gap between the acceptability of management practices in theory and the confidence that citizens have in land managers' abilities to use those practices safely and effectively. But since most citizens are willing to accept the use of multiple practices on a small scale, opportunities exist for land managers to build citizens’ confidence in their activities while gradually reducing the risk of wildfire to the Great Basin’s most susceptible communities.

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Filling The Gap: Improving Estimates Of Working Tree Resources In Agricultural Landscapes, C. H. Perry, C. W. Woodall, G. C. Liknes, Michele M. Schoeneberger Mar 2008

Filling The Gap: Improving Estimates Of Working Tree Resources In Agricultural Landscapes, C. H. Perry, C. W. Woodall, G. C. Liknes, Michele M. Schoeneberger

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Agroforestry plantings and other trees intentionally established in rural and urban areas are emerging as innovative management options for addressing resource issues and achieving landscape-level goals. An understanding of the ecosystem services contributed by these and future plantings would provide critical information to policy and program developers, and a comprehensive inventory would contribute to estimating the cumulative effects of these plantings. Trees used in these practices are not explicitly inventoried by the primary national forest resource inventory of the United States: the Forest Inventory and Analysis (FIA) program of the USDA Forest Service. The FIA program currently limits its inventories …

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Smokejumper Obituary: Bowman, Albert R. (Missoula 1949), National Smokejumper Association Mar 2008

Smokejumper Obituary: Bowman, Albert R. (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Mcgrath, W. Thomas (Missoula 1957), National Smokejumper Association Mar 2008

Smokejumper Obituary: Mcgrath, W. Thomas (Missoula 1957), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Wilde, Ralph Edwin (Mccall 1946), National Smokejumper Association Mar 2008

Smokejumper Obituary: Wilde, Ralph Edwin (Mccall 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Nye, Stan (Pilot 0000), National Smokejumper Association Mar 2008

Smokejumper Obituary: Nye, Stan (Pilot 0000), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Meeting Minutes, March 8th, 2008, National Smokejumper Association Board Of Directors Mar 2008

Meeting Minutes, March 8th, 2008, National Smokejumper Association Board Of Directors

National Smokejumper Association Meeting Minutes

Agenda: Special Announcement: Tom McGrath health.; Minutes of the last meeting.; Treasurer's Report.; Investments report.; National Smokejumper Center (NSC).; National Forest Service Museum.; Membership Report.; Trail Maintenance Report and NSA Scholarship Program.; Merchandise Report.; Redmond Air Center Reunion.; Boise Reunion.; History Program.; Trustees.; Mission and Vision Statements.; Smokejumper Pilot Recognition.; Recognition Awards.; Evergreen Museum Report.; Video Update.; Next Reunion.; Board Member Changes.;

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Smokejumper Obituary: Mast Jr., William H. (Missoula 1968), National Smokejumper Association Mar 2008

Smokejumper Obituary: Mast Jr., William H. (Missoula 1968), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Buffers And Vegetative Filter Strips, Matthew J. Helmers, Thomas M. Isenhart, Mike Dosskey, Seth M. Dabney, Jeffrey S. Strock Mar 2008

Buffers And Vegetative Filter Strips, Matthew J. Helmers, Thomas M. Isenhart, Mike Dosskey, Seth M. Dabney, Jeffrey S. Strock

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

This chapter describes the use of buffers and vegetative filter strips relative to water quality. In particular, we primarily discuss the herbaceous components of the following NRCS Conservation Practice Standards:
Filter Strip (393)
Alley Cropping (311)
Riparian Forest Buffer (391)
Vegetative Barrier (601)
Conservation Cover (327)
Riparian Herbaceous Cover (390)
Contour Buffer Strips (332)
Grassed Waterway (412)

Placement of most of these practices is illustrated in figure 4-1. Common purposes of these herbaceous components (as defined by the NRCS Conservation Practice Standards) are to:
• Reduce the sediment, particulate organics, and sediment-adsorbed contaminant loadings in runoff.
• Reduce dissolved contaminant …

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The Rothermel Fire-Spread Model: Still Running Like A Champ, Gail Wells Mar 2008

The Rothermel Fire-Spread Model: Still Running Like A Champ, Gail Wells

Joint Fire Science Program Digests

In 1972, aeronautical engineer Richard C. Rothermel, of the USDA Fire Sciences Lab at Missoula, Montana, developed a method for modeling the spread of wildfire. The model became widely used, and although the ensuing years have brought many technological innovations, it is still the engine of the predictive tools used by fire behavior officers today. The Joint Science Fire Program (JFSP) is pleased to offer Dick Rothermel’s story as a tribute to a significant accomplishment, and also to showcase some of the current work at the Fire Sciences Lab.

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Gordie News, March 2008, West Chester University Of Pennsylvania Mar 2008

Gordie News, March 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

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Smokejumper Obituary: Riffe, Cecil Owen (Cave Junction 1960), National Smokejumper Association Feb 2008

Smokejumper Obituary: Riffe, Cecil Owen (Cave Junction 1960), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Ellison, Warren J. (Pilot 0000), National Smokejumper Association Feb 2008

Smokejumper Obituary: Ellison, Warren J. (Pilot 0000), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Gordie News, February 2008, West Chester University Of Pennsylvania Feb 2008

Gordie News, February 2008, West Chester University Of Pennsylvania

Gordon Natural Area History & Strategic Plan Documents

No abstract provided.

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Silvopasture: Establishment & Management Principles For Pine Forests In The Southeastern United States Feb 2008

Silvopasture: Establishment & Management Principles For Pine Forests In The Southeastern United States

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Silvopasture is an agroforestry practice that integrates livestock, forage production, and forestry on the same land management unit. Silvopasture systems are deliberately designed and managed to produce a high-value timber product (such as sawtimber) in the long term while providing short-term annual economic benefit from a livestock component through the management of forage or an annual crop component.

Well-managed silvopasture systems may also:

• Improve overall economic performance of a farm enterprise through diversification and maintaining biodiversity

• Maintain or increase tree growth

• Improve cool-season grass production

• Allow warm-season grass production with careful canopy management

• Provide shade …

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Smokejumper Obituary: Polutnik, Francis L. (Missoula 1952), National Smokejumper Association Jan 2008

Smokejumper Obituary: Polutnik, Francis L. (Missoula 1952), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Smokejumper Obituary: Nuss, Stuart Ragan (Missoula 1979), National Smokejumper Association Jan 2008

Smokejumper Obituary: Nuss, Stuart Ragan (Missoula 1979), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

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Watershed Forest Management Information System (Wfmis), Yanli Zhang, P. K. Barten Jan 2008

Watershed Forest Management Information System (Wfmis), Yanli Zhang, P. K. Barten

Faculty Publications

Maintenance of a sustainable clean water supply is critical for our future. However, watershed degradation is a common phenomenon around the world that leads to poor water quality. In order to protect water resources, the Watershed Forest Management Information System (WFMIS), was developed as an extension of ArcGIS® and is described in this paper. There are three submodels to address nonpoint source pollution mitigation, road system management, and silvicultural operations, respectively. The Watershed Management Priority Indices (WMPI) is a zoning approach to prioritize critical areas for conservation and restoration management. It meets the critical need to spatially differentiate land cover …

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Multitemporal Analysis Using Landsat Thematic Mapper (Tm) Bands For Forest Cover Classification In East Texas, Jason Grogan, I-Kuai Hung, James Kroll Jan 2008

Multitemporal Analysis Using Landsat Thematic Mapper (Tm) Bands For Forest Cover Classification In East Texas, Jason Grogan, I-Kuai Hung, James Kroll

Faculty Publications

Land cover maps have been produced using satellite imagery to monitor forest resources since the launch of Landsat 1. Research has shown that stacking leaf-on and leaf-off imagery (combining two separate images into one image for processing) may improve classification accuracy. It is assumed that the combination of data will aid in differentiation between forest types. In this study we explored potential benefits of using multidate imagery versus single-date imagery for operational forest cover classification as part of an annual remote sensing forest inventory system. Landsat Thematic Mapper (TM) imagery was used to classify land cover into four classes. Six …

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The Rural Firefighter, Issue 01-08--February 2008 Jan 2008

The Rural Firefighter, Issue 01-08--February 2008

The Rural Firefighter

Fire Season is Right Around the Corner - Are You Ready? Red Card Offered at Fire School; 50/50 Grant Status; New Years Resolutions; Something to Think About; Calendar of Events; Tips from Tex; Skills Crosswalk?; New Face at NFS Fire; Sandy’s Corner

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From Debate To Design: Issues In Clean Energy And Climate Change Law And Policy, Leslie Parker, Jennifer Ronk, Rachel Maxwell, Bradford Gentry, Marijn Wilder, James Cameron Jan 2008

From Debate To Design: Issues In Clean Energy And Climate Change Law And Policy, Leslie Parker, Jennifer Ronk, Rachel Maxwell, Bradford Gentry, Marijn Wilder, James Cameron

Yale School of the Environment Publications Series

A report on the work of the REIL Network 2007-2008

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Sagebrush Steppe: A Story Of Encroachment And Invasion Jan 2008

Sagebrush Steppe: A Story Of Encroachment And Invasion

Joint Fire Science Program Briefs (2007-2012)

Sagebrush steppe has been rapidly changing into woodlands of western juniper and pinyon pine since Euroamerican settlement of the West in the middle of the nineteenth century. The change from the dry scattered shrub and grasslands to woodlands has changed more than plants—it has also changed the fi re regime. Studies have revealed a threshold at which understory plants may not rebound after a disturbance—when trees have reached 40- to 50-percent cover. Disturbance—by fi re and overgrazing—also makes resources such as nutrients and soil water available for weeds to exploit, allowing invasives such as cheatgrass to establish and expand into …

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Testing The Conventional Wisdom: Fuel Management Approaches For The Central Hardwood Region, Jake Delwiche Jan 2008

Testing The Conventional Wisdom: Fuel Management Approaches For The Central Hardwood Region, Jake Delwiche

Joint Fire Science Program Briefs (2007-2012)

It’s not for nothing that Missouri calls itself the “Show Me State.” The name implies a common-sense insistence on seeing the evidence, an interest in seeing the proof. Thus, it is appropriate that an important long-term forestry research project is taking place in Southeastern Missouri. The goal is to test widely held opinions on the role and effectiveness of various forest fuel management strategies. Research results continue to be collected on the effects of overstory thinning and prescribed burning on forest fuelloads, and on using these tools to change the permanent character of the forest itself. The project began in …

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Forecast For The Southern Boreal Forest: An Increasing Incidence Of Severe Disturbance, Elise Lequire Jan 2008

Forecast For The Southern Boreal Forest: An Increasing Incidence Of Severe Disturbance, Elise Lequire

Joint Fire Science Program Briefs (2007-2012)

On Independence Day, 1999, a storm system that originated over the Gulf of Mexico and passed through North Dakota dealt a severe blow to nearly half a million acres of the Superior National Forest in northern Minnesota. The blowdown, or derecho, packed winds exceeding 90 miles per hour and left in its wake downed and damaged trees and a dangerously high fuel load. Nearly half a million acres of forest were affected, primarily in the Boundary Waters Canoe Area Wilderness (BWCAW) and the Gunfl int Trail Corridor, a strip of land in public and private ownership that supports a thriving …

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Pentimento: Fuels Reduction And Restoration In The Bosque Of The Middle Rio Grande, Lisa-Natalie Anjozian Jan 2008

Pentimento: Fuels Reduction And Restoration In The Bosque Of The Middle Rio Grande, Lisa-Natalie Anjozian

Joint Fire Science Program Briefs (2007-2012)

The Middle Rio Grande of New Mexico is the most extensive, remaining bosque, or cottonwood forest in the southwest. Alterations caused by humans—damming and channeling the river, controlling floods, and planting non-native trees—have disrupted the cycles of the earlier ecosystem. Without periodic flooding, native cottonwoods cannot regenerate. Invasive exotic plants such as Tamarisk, also known as salt cedar, and Russian olive have filled in the gaps and open spaces, increased fuel loads, and continue to replace native trees and shrubs after wildfires. Cottonwoods, not a fire-adapted species, are now at risk from wildfire and replacement by invasive plants. An array …

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