Life Sciences Commons^™

Smokejumper Obituary: Eicher, Maj. Gen. William (Ncsb 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Morin, William A. "Bill" (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Williams, Ralph O. (Pilot 0000), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Despotism And Risk Of Infanticide Influence Grizzly Bear Den-Site Selection, Nathan S. Libal, Jerrold L. Belant, Bruce D. Leopold, Guiming Wang, Patricia A. Owen

College of Forest Resources Publications and Scholarship

Given documented social dominance and intraspecific predation in bear populations, the ideal despotic distribution model and sex hypothesis of sexual segregation predict adult female grizzly bears (Ursus arctos) will avoid areas occupied by adult males to reduce risk of infanticide. Under ideal despotic distribution, juveniles should similarly avoid adult males to reduce predation risk. Den-site selection and use is an important component of grizzly bear ecology and may be influenced by multiple factors, including risk from conspecifics. To test the role of predation risk and the sex hypothesis of sexual segregation, we compared adult female (n = 142), adult male …

Snapping A Pour Point For Watershed Delineation In Arcgis Hydrologic Analysis, Yanli Zhang, Matthew W. Mcbroom, Jason Grogan, I-Kuai Hung

Faculty Publications

No abstract provided.

A Comparative Risk Assessment Framework For Wildland Fire Management: The 2010 Cohesive Strategy Science Report, David E. Calkin, Alan Ager, Matthew P. Thompson, Mark A. Finney, Danny C. Lee, Thomas M. Quigley, Charles W. Mchugh, Karin L. Riley, Julie M. Gilbertson-Day

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

The FLAME Act of 2009 requires the U.S. Department of Agriculture Forest Service and the U.S. Department of Interior to submit to Congress a Cohesive Wildfire Management Strategy. In this report, we explore the general science available for a risk-based approach to fire and fuels management and suggest analyses that may be applied at multiple scales to inform decisionmaking and tradeoff analysis. We discuss scientific strengths and limitations of wildfire risk assessment frameworks, including the benefit of broad scalability as demonstrated by four recent case studies. We further highlight the role of comparative risk assessment, which extends the analysis to …

Classifying And Mapping Diversity In A Species-Poor System: The Mangrove Meta-Community Of Laguna Chacahua National Park, Oaxaca, Mexico, Elizabeth Kay Weisgerber

Master's Theses

ABSTRACT

Classifying and Mapping Diversity in a Species-Poor System: the mangrove meta-community of Laguna Chacahua National Park, Oaxaca, Mexico

by

Elizabeth Kay Weisgerber

Both field transects and imagery grid plots were analyzed with the goal of creating a community classification map for the mangrove forest of Parque Nacional Lagunas de Chacahua. In total, data was collected in 49 sites throughout the park, recording measures such as DBH, basal area, estimated dominance, frequency, cover and relative dominance. Field locations were marked and georeferenced with a GPS and grid plots overlaid on satellite imagery of the park were generated via a random …

Smokejumper Obituary: Walters, Thomas "Jerry" (Missoula 1966), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Haver, Dale H. (Missoula 1964), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Deriving Fuel Mass By Size Class In Douglas-Fir (Pseudotsuga Menziesii) Using Terrestrial Laser Scanning, Carl Seielstad, Crystal Stonesifer, Eric Rowell, Lloyd Queen

Forest Management Faculty Publications

Requirements for describing coniferous forests are changing in response to wildfire concerns, bio-energy needs, and climate change interests. At the same time, technology advancements are transforming how forest properties can be measured. Terrestrial Laser Scanning (TLS) is yielding promising results for measuring tree biomass parameters that, historically, have required costly destructive sampling and resulted in small sample sizes. Here we investigate whether TLS intensity data can be used to distinguish foliage and small branches (less than or equal to 0.635 cm diameter; coincident with the one-hour timelag fuel size class) from larger branchwood (>0.635 cm) in Douglas-fir (Pseudotsuga …

Assessment Of Organic And Inorganic Phosphorus In Soils Derived From Cretaceous Sediments And Basement Complex Soils Of Guinea Savannah Of Kogi State, North Central Nigeria, Sunday I. Amhakhian, H H. Isitekhale, Charles I. Oyewole

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

A pot experiment was carried out using 20 surface soils (0-15cm depth) in 2008 to assess soil organic phosphorus and some fraction of inorganic phosphorus in other to know their availability in the soils of the studied area and also work have not been done in this areas in respect to organic and in-organic phosphorus. The experiment was conducted using 20 soils 10 from each geological formation (Cretaceous sediments and Basement complex soils), respectively. The mean organic phosphorus of 63.51 mgkg 1 soil was obtained for Cretaceous sediment soils and 158.54 mgkg 1 soil for the basement complex soils respectively. …

Smokejumper Obituary: Eriksson, Richard C. (Missoula 1960), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Development Of Functional Indices Of Facility Occurrence Towards The Distribution Of Social Services In Lagos Island Nigeria., Augustus O. Atubi

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

Proper coordination of transport and public facilities provision is vital to any balanced regional development strategy. The central aim of this study, therefore, is to find out what the relationship is between access to the transport network and the provision of functional indices of facility occurrence towards the distribution of social services in Lagos Island, Nigeria. In particular it seeks to find out areas that have below or above average level of facility occurrences relative to the level of accessibility. However, a pair wise correlation matrix of the eleven (11) variables employed in the index construction was carried out. The …

Biological Effects On Serpentinite Weathering, Mary H. Evert, Julie Baumeister, Elisabeth Hausrath

Undergraduate Research Opportunities Program (UROP)

Serpentinites, perhaps more than any other rock type, control the composition and evolution of the development of the surrounding ecosystems. The bulk chemistry of serpentinite rocks, high in Mg and trace elements, and low in nutrients such as Ca, K, P, and N, causes an extreme and stressful environment for ecosystems. However, the role that those serpentine ecosystems play in development of serpentine soils has not been examined.

Due to the unusual chemistry of serpentine soils, serpentine ecosystems have deeper and better-developed root systems than other ecosystems. The rhizosphere of serpentine systems, documented to produce abundant organic acids and siderophores, …

Silvicultural Considerations For The Reintroduction Of American Chestnut, Castanea Dentata, To The Forests Of The Eastern United States, Cornelia Cooper Wells Pinchot

Doctoral Dissertations

In anticipation of widespread planting of putatively blight-resistant hybrid chestnuts (Castanea spp.), it is critical to understand the silvics and competitive ability of the species. This dissertation examines preliminary growth and survival of several species and genetic crosses of chestnut grown as 1-0 high-quality nursery seedlings and planted in two study sites: Southeastern Kentucky (Daniel Boone National Forest; chapter 2), and Northeastern Connecticut (Yale-Myers Forest; chapter 4). The effects of three silvicultural treatments on the Daniel Boone National Forest (DBNF), and four silvicultural treatments on the Yale-Myers Forest (YM) were evaluated. Furthermore, the effect of initial seedling size on …

Anthropogenic And Natural Causes Influencing Population Genetic Structure Of Juniperus Procera Hochst. Ex Endl. In The Ethiopian Highlands, Demissew Sertse, Oliver Gailing, Nicolas George Eliades, Reiner Finkeldey

Michigan Tech Publications

Juniperus procera is economically highly important but threatened tree species. It is the only species among 67 taxa in the genus Juniperus that naturally grows in Africa and south of the equator extending up to 18°S in Zimbabwe. Ethiopia is assumed to host the largest J. procera populations, which are also believed to have high genetic variation owing to their wide ecological amplitude. This study assessed genetic variation at AFLPs of J. procera populations in the Ethiopian highlands. In the study six populations, namely Chilimo, Goba, Menagesha-Suba, Wef-Washa, Yabelo and Ziquala were included. A total of 20-24 trees from each …

Knowledge Exchange: A Two-Way Street, Elise Lequire

Joint Fire Science Program Digests

The best available science is of little use if it gathers dust on the shelves of library stacks or is deeply embedded on an obscure website. A key part of the Joint Fire Science Program (JFSP) mission is to ensure research on wildland fire science is readily available to practitioners in a useful format so it can help support sound management decisions. The JFSP has made great inroads in this arena on a national level, but managers short on time often have to sift through an overload of information that may not be specific to their region. In the next …

Effects Of Different Silvicultural Practices On Wild Turkey Brood Habitat And Regeneration In Upland Hardwoods, John Michael Mccord

Masters Theses

Optimum brood cover for wild turkeys is composed of herbaceous cover <0.5 m tall that conceals poults from predators and allows travel underneath. On tracts of hardwoods where early succession stages and young forest cover are scarce, a lack of understory development can limit turkey populations. Additionally, retaining oak on these sites after logging or habitat enhancement is important to provide future timber value and hard mast. I compared the effects of silvicultural practices (multiple fires [F], shelterwood cutting [S], shelterwood cutting with one fire [SF], retention cutting [R], retention cutting with multiple fires [RF], retention cutting with herbicide application [RH], and retention cutting with herbicide application and multiple fires [RHF]) with controls (C) on wild turkey brood habitat and oak regeneration in upland central hardwood stands. I measured structure and food resources to quantify the quality of wild turkey brood cover. Shelterwood and retention cuts increased photosynthetically active radiation. However, herbaceous, vine, and bramble groundcover did not increase. Woody regeneration was greater following canopy reduction and understory disturbance compared to C. Disturbance (fire or herbicide) was required to maintain vegetation at the ideal height for wild turkey broods. Soft mast production increased after canopy reduction with and without fire. Invertebrate biomass did not increase following any treatment, but availability exceeded the dietary requirements of a wild turkey brood. I also counted stem density of oak and competitor regeneration in response to these treatments. Seedlings <12.7 cm were ephemeral. S and SF had a greater density of oak stems >1.4 m than C and F. However, S and SF also had the greatest density of oak >1.4 m prior to treatment. Canopy reduction increased oak competitors, but prescribed fire reduced competitors. I recommend canopy reduction, followed by repeated low-intensity prescribed fire to maintain low groundcover to enhance brood habitat for wild turkeys in mature closed-canopy upland hardwood stands.

Bringing Biodiversity To Development: Perceptions Of Integrating Eucalyptus And Forest-Corridors Around The Serra Do Brigadeiro, Brazil, Maggie R Stevens

Masters Theses

The Atlantic Forest of south-eastern Brazil is a hot-spot for biodiversity and should be conserved. It is also at the center of the largest municipalities in Brazil and therefore has a severely fragmented landscape. Iracambi, a working farm near the Serra do Brigadeiro state park in Minas Gerais, is working for conservation in an area of intense agricultural production and expanding forestry industry. Most households in this rural area have some amount of eucalyptus on their property and consequently the director of Iracambi is developing the preliminary foundation for a forest corridor program comprised of primarily eucalyptus with the goal …

U.S. Forest Service Northern Conifer Experimental Forests: Historical Review And Examples Of Silvicultural Research Applications, Kate Berven

Electronic Theses and Dissertations

This study investigates U.S. Forest Service silvicultural research in the northern mixed-conifer forest of the Northeast. Chapter 1 is an overview of three closed experimental forests and is a cautionary tale regarding lost research opportunities. The Paul Smith, Finch-Pryun, and Gale River Experimental Forests (EFs) were established in the early to mid 1900s. Changing societal needs and research priorities led to redirected staffing and funding; all three were disestablished. Initial investments were lost and outcomes of the experiments not fully realized. This chapter highlights the importance of retaining and properly storing records. The Penobscot EF is an exemplary illustration of …

Reducing Reliance On Supplemental Winter Feeding In Elk (Cervus Canadensis): An Applied Management Experiment At Deseret Land And Livestock Ranch, Utah, Dax L. Mangus

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wildlife managers have fed elk in North America for nearly 100 years. Giving winter feed to elk can compensate for a shortage of natural winter range and may boost elk populations while also helping prevent commingling with livestock and depredation of winter feed intended for livestock. In contrast to these benefits of supplemental feeding, there are economic and environmental costs associated with feeding, and elk herds that winter on feeding grounds have a higher risk of contracting and transmitting disease. Brucellosis is of primary concern now, and Chronic Wasting Disease may be in the future. Many see the discontinuation of …

Characterization Of Acacia Mangium Wood Based Activated Carbons Prepared In The Presence Of Basic Activating Agents, Mohammed Danish

Dr. Mohammed Danish

No abstract provided.

Smokejumper Obituary: Linton, Gerald J. (Missoula 1948), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Hilbun, Robert (Mccall 1951), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Smokejumper Obituary: Frankovich, John Albert (Missoula 1946), National Smokejumper Association

Smokejumper Obituaries

No abstract provided.

Urban Climate And Challenges Of Tropical Cities, B E. Omogbai

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

This study examines the nature of urban climate, features and the challenges on the developing tropical cities in the 21st century. It argues that the use of principles of urban climate would help in providing comfortable living conditions and problem immune working environments for the inhabitants of tropical cities. The findings reveal that owing to poor environmental planning, inadequate geotechnical landscape surveys prior to the development of urban infrastructures, and non-adherence to the principles of urban climate, challenges of landscape degradation, excessive flooding of the built infrastructures, heat-island effects, and collapse of buildings have emerged. Suggested measures to avert these …

How Well Do U.S. Forest Service Terrestrial Ecosystem Surveys Correspond With Measured Vegetation Properties?, Scott R. Abella

Life Sciences Faculty Research

No abstract provided.

Effectiveness Of Forest Management Strategies To Mitigate Effects Of Global Change In South-Central Siberia, Eric J. Gustafson, Anatoly Z. Shvidenko, Robert M. Scheller

Environmental Science and Management Faculty Publications and Presentations

We investigated questions about the ability of broad silvicultural strategies to achieve multiple objectives (reduce disturbance losses, maintain the abundance of preferred species, mitigate fragmentation and loss of age-class diversity, and sequester aboveground carbon) under future climate conditions in Siberia. We conducted a factorial experiment using the LANDIS-II landscape disturbance and succession model. Treatments included varying the size and amount of areas cut and the cutting method (selective or clearcut). Simultaneously, the model simulated natural disturbances (fire, wind, insect out-breaks) and forest succession under projected future climate conditions as predicted by an ensemble of global circulation models. The cutting method …

A Landscape-Scale Approach For Modeling Habitat Suitability For The Louisiana Black Bear (Ursus Americanus Luteolus) In East Texas, Dan J. Kaminski, Christopher E. Comer

Faculty Publications

No abstract provided.

Detecting Changes In Landuse/Cover Of Umuahia, South-Eastern Nigeria Using Remote Sensing And Gis Techniques, Fanan Ujoh, Olarewaju Oluseyi Ifatimehin, Adams Ndalai Baba

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

Since 1991 when it became the capital city of Abia State, Umuahia has undergone tremendous transformation in its land use and land cover due to rapid urbanization. The main materials employed for this study are a land use map (1991) and Landsat ETM+satellite image (2007) of the study area. These, combined with field survey/checks, were brought into a GIS environment using ILWIS 3.2 Academic image classification software to map the land use/land cover and to estimate the rate of urban expansion and loss of rural land at the peri-urban fringes of Umuahia between 1991 and 2007. The study revealed significant …