Forest Sciences Commons^™

Smokejumper Obituary: Austin, Richard D. (Missoula 1953), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

¿Cuáles Son Las Oportunidades De Ingreso En Agroforestería?

Working Trees (USDA-NAC)

¿Cuáles son las oportunidades de ingreso en agroforestería?

Agroforestería es una forma de trabajar la tierra que incorpora árboles y arbustos en sistemas agrícolas y que permite la producción de árboles, cultivos y/o animales en el mismo predio de terreno. Esto ofrece la ventaja de manejar productos agrícolas y al mismo tiempo ayuda a mejorar el suelo y el ambiente.

¿Qué Es Agroforestería?

Working Trees (USDA-NAC)

¿Qué es agroforestería?

Agroforestación es mezclar intencionalmente árboles y arbustos con cultivos o sistemas de producción animal para obtener beneficios ambientales, económicos y sociales de forma ecológicamente sustentable.

Air Pollution: The Trees Aren't Lichen It, Wes L. Hanson, Leigh A. Hanson, Meghan Lockwood, Morgan Yarber

2013 Projects

The Keck Summer Collaborative Research Program provides opportunities for Linfield College students and faculty to conduct research on issues related to the Pacific Northwest, and to bring the research findings back into the classroom within the subsequent academic year. Students partner with faculty to conduct research and present their work to other students, Linfield staff and faculty, and community members during a series of brown bag lunches. Wes Hanson, Leigh Hanson, Meghan Lockwood, and Morgan Yarber conducted research with Nancy Broshot and gave this presentation during the summer of 2013.

Understanding Relationships Among Abundance, Extirpation, And Climate At Ecoregional Scales, Erik A. Beever, Solomon Z. Dobrowski, J. Long, A. R. Mynsberge, N. B. Piekielek

Forest Management Faculty Publications

Recent research on mountain-dwelling species has illustrated changes in species' distributional patterns in response to climate change. Abundance of a species will likely provide an earlier warning indicator of change than will occupancy, yet relationships between abundance and climatic factors have received less attention. We tested whether predictors of counts of American pikas (Ochotona princeps) during surveys from the Great Basin region in 1994-1999 and 2003-2008 differed between the two periods. Additionally, we tested whether various modeled aspects of ecohydrology better predicted relative density than did average annual precipitation, and whether risk of site-wide extirpation predicted subsequent population counts of …

Residential Edges As Ecological Traps: Postfledgling Survival Of A Ground-Nesting Passerine In A Forested Urban Park, Amy A. Shipley, Michael T. Murphy, Adam H. Elzinga

Biology Faculty Publications and Presentations

Substantial offspring mortality can occur during the postfledging period of birds, but few postfledging survival studies have been conducted within the context of habitat suitability. We conducted a 2-year radiotelemetry study of Spotted Towhee (Pipilo maculatus) reproductive success and fledgling survival in a 24-ha forested park in a residential area of Lake Oswego, Oregon. In corroboration of previous research on this species, we found (1) that Spotted Towhees nested closer to the edge between the park and residential neighborhoods than expected by chance, and (2) that pairs nesting near edges produced the largest and most offspring. However, fates were reversed …

Smokejumper Obituary: Fellows, Larry A. (Mccall 1956), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Interactive Effects Of Defoliation And Climate Change On Compensatory Growth Of Silver Birch Seedlings, Liisa Huttunen, Matthew P. Ayres, Pekka Niemelä, Susanne Heiska, Riitta Tegelberg, Matti Rousi, Seppo Kellomaki

Dartmouth Scholarship

Atmospheric warming increases the abundance of insect herbivores and intensifies the risk of defoliation, especially in high latitude forests. At the same time, the effects of increasing temperature and CO2 on plant responses to foliage damage are poorly understood. We examined if previous-year defoliation, varying between 0 and 75% of total leaf area, and different combinations of elevated temperature, CO2 and nutrient availability alter the growth of two-year old silver birch (Betula pendula Roth) seedlings. We measured the greatest height growth in seedlings that were fertilized and defoliated twice at the level of 50% of total leaf area, and subjected …

Smokejumper Obituary: Washam, Loyle (Missoula 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Currie, Walt (Missoula 1975), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Understory Diversity And Succession On Coarse Woody Debris In A Coastal, Old-Growth Forest, Oregon, Shannon Lee Mcdonald

Dissertations and Theses

This research examines the relationship between understory plant diversity and logs in a Pacific Northwest (PNW) Sitka spruce (Picea sitchensis)-western hemlock (Tsuga heterophylla) old-growth, coastal forest. These forests are renowned for their high forest productivity, frequent wind storms, and slow log decomposition rates that produce unmatched accumulations of coarse woody debris (CWD) yet few studies have examined the relationship between CWD and understory vegetation ecology. My research addressed this topic by comparing understory plant census data between paired fallen log and forest floor sites (n=20 pairs). My objectives were to: 1) determine the influence of substrate type on community composition …

Preserving Nature Through Film: Wilderness Alps Of Stehekin And The North Cascades, 1956-1968, Nicolas Timothy Bergmann

Dissertations and Theses

On March 22, 1958 David Brower's film Wilderness Alps of Stehekin premiered to an audience of conservationists in Seattle, Washington. Almost two years in the making, the thirty-one minute film advocated the preservation of nature in Washington's North Cascades through the creation of a national park. Over the next decade, Wilderness Alps of Stehekin became the most influential publicity tool in the struggle to preserve the North Cascades. Because of the region's geographic isolation, the film was the first time many people throughout the nation were exposed to the scenic grandeur of the area. Images of craggy peaks and colorful …

Long-Term Nitrogen Addition Decreases Carbon Leaching In A Nitrogen-Rich Forest Ecosystem, X. Lu, Frank S. Gilliam, G. Yu, H. Chen, J. Mo

Biological Sciences Faculty Research

Dissolved organic carbon (DOC) plays a critical role in the carbon (C) cycle of forest soils, and has been recently connected with global increases in nitrogen (N) deposition. Most studies on effects of elevated N deposition on DOC have been carried out in N-limited temperate regions, with far fewer data available from N-rich ecosystems, especially in the context of chronically elevated N deposition. Furthermore, mechanisms for excess N-induced changes of DOC dynamics have been suggested to be different between the two kinds of ecosystems, because of the different ecosystem N status. The purpose of this study was to experimentally examine …

Smokejumper Obituary: King, Lowell D. (Missoula 1957), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Farrell, Joseph "Joe" (Missoula 1949), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Reinhardt, Charles "Chuck" (Missoula 1966), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Estudios Científicos En El Estado De Hidalgo Y Zonas Aledañas, Volumen Ii, Griselda Pulido-Flores, Scott Monks

Zea E-Books Collection

Los 16 capítulos que conforman este libro son una contribución al conocimiento de la biodiversidad y conservación de los recursos naturales en el estado de Hidalgo, México.

Se aborda el derecho de propiedad intelectual en la biodiversidad, citando algunos ejemplos de México. Así mismo, se presenta un estudio de la biodiversidad y distribución de la herpetofauna en cuatro tipos de vegetación. Desde el punto de vista de la helmintología se presentan dos estudios de los helmintos parásitos de vertebrados silvestres; con nuevos registros de hospederos y localidades de algunas especies de helmintos para Hidalgo. También, se aborda el uso de …

Nitrogen Cycling Responses To Mountain Pine Beetle Disturbance In A High Elevation Whitebark Pine Ecosystem, Megan P. Keville, Sasha C. Reed, Cory C. Cleveland

Ecosystem and Conservation Sciences Faculty Publications

Ecological disturbances can significantly affect biogeochemical cycles in terrestrial ecosystems, but the biogeochemical consequences of the extensive mountain pine beetle outbreak in high elevation whitebark pine (WbP) (Pinus albicaulis) ecosystems of western North America have not been previously investigated. Mountain pine beetle attack has driven widespread WbP mortality, which could drive shifts in both the pools and fluxes of nitrogen (N) within these ecosystems. Because N availability can limit forest regrowth, understanding how beetle-induced mortality affects N cycling in WbP stands may be critical to understanding the trajectory of ecosystem recovery. Thus, we measured above- and belowground N …

Smokejumper Obituary: Allen, Norman Edgar (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Fuel Treatments And Fire Severity: A Meta-Analysis, Erik J. Martinson, Philip N. Omi

Joint Fire Science Program Synthesis Reports

We employed meta-analysis and information theory to synthesize findings reported in the literature on the effects of fuel treatments on subsequent fire intensity and severity. Data were compiled from 19 publications that reported observed fire responses from 62 treated versus untreated contrasts. Effect sizes varied widely and the most informative grouping of studies distinguished three vegetation types and three types of fuel treatment. The resultant meta-analytic model is highly significant (p < 0.001) and explains 78% of the variability in reported observations of fuel treatment effectiveness. Our synthesis highlights several considerations that both support and inform the current fuels management paradigm.