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Articles 31 - 60 of 551
Full-Text Articles in Forest Sciences
Smokejumper Obituary: Darchuck, Paul (Missoula 1946), National Smokejumper Association
Smokejumper Obituary: Darchuck, Paul (Missoula 1946), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Henry, Andrew H. "Ed" (Cave Junction 1946), National Smokejumper Association
Smokejumper Obituary: Henry, Andrew H. "Ed" (Cave Junction 1946), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Larson, Wilfred C. "Jack" (North Cascades 1946), National Smokejumper Association
Smokejumper Obituary: Larson, Wilfred C. "Jack" (North Cascades 1946), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Adams, Edward John (Cave Junction 1946), National Smokejumper Association
Smokejumper Obituary: Adams, Edward John (Cave Junction 1946), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Bate, George Dean (Mccall 1946), National Smokejumper Association
Smokejumper Obituary: Bate, George Dean (Mccall 1946), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Friestad, Dennis J. (Missoula 1965), National Smokejumper Association
Smokejumper Obituary: Friestad, Dennis J. (Missoula 1965), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Snowpack Reconstruction In North America Using Tree-Rings, Bethany Lynn Coulthard, Kevin J. Anchukaitis, Gregory T. Pederson, Edward Cook, Jeremy Littell, Dan J. Smith
Snowpack Reconstruction In North America Using Tree-Rings, Bethany Lynn Coulthard, Kevin J. Anchukaitis, Gregory T. Pederson, Edward Cook, Jeremy Littell, Dan J. Smith
Geoscience Faculty Research
Climate change has contributed to recent declines in mountain snowpack and earlier runoff, which in turn has intensified hydrological droughts in western North America. Climate model projections suggest that continued and severe snowpack reductions are expected over the 21st century, with profound consequences for ecosystems and human welfare. Yet the current understanding of trends and variability in mountain snowpack is limited by the relatively short and strongly temperature forced observational record. Motivated by the urgent need to better understand snowpack dynamics in a long-term, spatially coherent framework, here we examine snow-growth relationships in western North American tree-ring chronologies. We present …
Variation In Personality Among Semi-Wild Myanmar Timber Elephants, Sateesh Venkatesh
Variation In Personality Among Semi-Wild Myanmar Timber Elephants, Sateesh Venkatesh
Theses and Dissertations
This study examines two personality traits: exploration and neophobia, which could influence human-elephant conflicts. Thirty-one semi-wild elephants were tested over two trials using a custom novel puzzle tube containing three tasks and three rewards. Our studies show that elephants do vary significantly between individuals in both exploration and neophobia.
Smokejumper Obituary: Hotalen, Edward Norman (Missoula 1976), National Smokejumper Association
Smokejumper Obituary: Hotalen, Edward Norman (Missoula 1976), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Scott, Ross Davies (Missoula 1951), National Smokejumper Association
Smokejumper Obituary: Scott, Ross Davies (Missoula 1951), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Inaction On Lead Despite The Relevant Knowledge: Predictors, Covariates, And Outreach Implications, Alessandra Rossi, Bernabas Wolde, Pankaj Lal, Melissa Harclerode
Inaction On Lead Despite The Relevant Knowledge: Predictors, Covariates, And Outreach Implications, Alessandra Rossi, Bernabas Wolde, Pankaj Lal, Melissa Harclerode
Department of Biology Faculty Scholarship and Creative Works
Testing residential soil and paint for lead provides actionable information. By showing where and how much lead exists on the residence, it allows one to quantify risk and determine the best ways to reduce exposure along with the corresponding health and financial costs. For these reasons, several federal and state programs offer outreach to audiences on the benefits of testing residential soil and paint for lead. Not all individuals who know about lead’s adverse health effects, however, test their residence for lead, potentially limiting the actionable information that could have helped to reduce their exposure. Such individuals represent a challenge …
Taxonomic Review Of South American Butter Frogs: Phylogeny, Geographic Patterns, And Species Delimitation In The Leptodactylus Latrans Species Group (Anura: Leptodactylidae), Felipe De M. Magalhães, Mariana L. Lyra, Thiago R. De Carvalho, Diego Baldo, Francisco Brusquetti, Pamela Burella, Guarino R. Colli, Marcelo C. Gehara, Rafael O. De Sá, Et Al.
Taxonomic Review Of South American Butter Frogs: Phylogeny, Geographic Patterns, And Species Delimitation In The Leptodactylus Latrans Species Group (Anura: Leptodactylidae), Felipe De M. Magalhães, Mariana L. Lyra, Thiago R. De Carvalho, Diego Baldo, Francisco Brusquetti, Pamela Burella, Guarino R. Colli, Marcelo C. Gehara, Rafael O. De Sá, Et Al.
Biology Faculty Publications
The Leptodactylus latrans species group currently comprises eight medium- to large-sized frog species with a convoluted taxonomic history, particularly related to the specific limits of the L. latrans complex, and the species pair Leptodactylus chaquensis–Leptodactylus macrosternum. Their homogeneous external morphology and continental geographic distribution in South America have posed severe limitations to a comprehensive review, such that taxonomic consensus and species limits remain uncertain. This is further worsened by the presence of chromatic polymorphism among coexisting species that can hardly be distinguished by external morphology. Based on a large-scale geographic sampling including multilocus DNA analyses, and acoustic …
Smokejumper Obituary: Kalbfus, Charles Lyon (Missoula 1945), National Smokejumper Association
Smokejumper Obituary: Kalbfus, Charles Lyon (Missoula 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Siemon, William L. (Missoula 1945), National Smokejumper Association
Smokejumper Obituary: Siemon, William L. (Missoula 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Beals, David Ellis (Mccall 1945), National Smokejumper Association
Smokejumper Obituary: Beals, David Ellis (Mccall 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Daugherty, Michael Carl (Redding 1965), National Smokejumper Association
Smokejumper Obituary: Daugherty, Michael Carl (Redding 1965), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Holmes, Michael Alden "Mike" (Missoula 1966), National Smokejumper Association
Smokejumper Obituary: Holmes, Michael Alden "Mike" (Missoula 1966), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Poterfield, Ralph (Mccall 1945), National Smokejumper Association
Smokejumper Obituary: Poterfield, Ralph (Mccall 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Gardner, Raymond Clare (Missoula 1945), National Smokejumper Association
Smokejumper Obituary: Gardner, Raymond Clare (Missoula 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Watkins, Norman Arthur (Missoula 1945), National Smokejumper Association
Smokejumper Obituary: Watkins, Norman Arthur (Missoula 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Green, Millard W. "Bill" (Cave Junction 1945), National Smokejumper Association
Smokejumper Obituary: Green, Millard W. "Bill" (Cave Junction 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Aspen Soils Retain More Dissolved Organic Carbon Than Conifer Soils In A Sorption Experiment, Antra Boča, Astrid R. Jacobson, Helga Van Miegroet
Aspen Soils Retain More Dissolved Organic Carbon Than Conifer Soils In A Sorption Experiment, Antra Boča, Astrid R. Jacobson, Helga Van Miegroet
Aspen Bibliography
The effect tree species have on soil organic carbon (SOC) has been hotly debated but, so far, few clear patterns have emerged. One example of a differing tree species effect on SOC are aspen forests in North America, which have been found to have more stable SOC than adjacent conifer forest stands. An important source for the formation of stable organo-mineral complexes in soil is dissolved organic carbon (DOC). DOC concentrations in mineral soil are often higher under the thick O-horizons of conifer forests than under aspen forests, but this does not correspond to more stable mineral SOC. This suggests …
Projected Impact Of Mid-21st Century Climate Change On Wildfire Hazard In A Major Urban Watershed Outside Portland, Oregon Usa, Andy Mcevoy, Max Nielsen-Pincus, Andres Holz, Arielle J. Catalano, Kelly E. Gleason
Projected Impact Of Mid-21st Century Climate Change On Wildfire Hazard In A Major Urban Watershed Outside Portland, Oregon Usa, Andy Mcevoy, Max Nielsen-Pincus, Andres Holz, Arielle J. Catalano, Kelly E. Gleason
Environmental Science and Management Faculty Publications and Presentations
Characterizing wildfire regimes where wildfires are uncommon is challenged by a lack of empirical information. Moreover, climate change is projected to lead to increasingly frequent wildfires and additional annual area burned in forests historically characterized by long fire return intervals. Western Oregon and Washington, USA (westside) have experienced few large wildfires (fires greater than 100 hectares) the past century and are characterized to infrequent large fires with return intervals greater than 500 years. We evaluated impacts of climate change on wildfire hazard in a major urban watershed outside Portland, OR, USA. We simulated wildfire occurrence and fire regime characteristics under …
High-Quality De Novo Assembly Of The Eucommia Ulmoides Haploid Genome Provides New Insights Into Evolution And Rubber Biosynthesis, Yun Li, Hairong Wei, Jun Yang, Kang Du, Jiang Li, Ying Zhang, Tong Qiu, Zhao Liu, Yongyu Ren, Lianjun Song, Xiangyang Kang
High-Quality De Novo Assembly Of The Eucommia Ulmoides Haploid Genome Provides New Insights Into Evolution And Rubber Biosynthesis, Yun Li, Hairong Wei, Jun Yang, Kang Du, Jiang Li, Ying Zhang, Tong Qiu, Zhao Liu, Yongyu Ren, Lianjun Song, Xiangyang Kang
Michigan Tech Publications, Part 1
We report the acquisition of a high-quality haploid chromosome-scale genome assembly for the first time in a tree species, Eucommia ulmoides, which is known for its rubber biosynthesis and medicinal applications. The assembly was obtained by applying PacBio and Hi–C technologies to a haploid that we specifically generated. Compared to the initial genome release, this one has significantly improved assembly quality. The scaffold N50 (53.15 MB) increased 28-fold, and the repetitive sequence content (520 Mb) increased by 158.24 Mb, whereas the number of gaps decreased from 104,772 to 128. A total of 92.87% of the 26,001 predicted protein-coding genes identified …
Discerning Competitive Vs. Facilitative Relationships Of Weeds On Forest Restoration Efforts At La Sal Del Rey, Tx, Mylen A. Arias
Discerning Competitive Vs. Facilitative Relationships Of Weeds On Forest Restoration Efforts At La Sal Del Rey, Tx, Mylen A. Arias
Theses and Dissertations
Dryland ecosystems need effective restoration strategies to address severe degradation. It is often assumed that voluntary forb weeds either compete with or have no effect on native seedlings. In contrast, theory and empirical work suggest a potential facilitative role for such forb weeds. We conducted a manipulative weed exclusion experiment at a semi-arid site in South Texas targeted for large scale forest restoration and subsequently dominated by early successional forb weeds to discern the net effect of these weeds on the growth and survival of target thornscrub tree and shrub seedlings. Overall, weed presence did not significantly affect seedling mortality …
High-Purity Recycling Of Hematite And Zn/Cu Mixture From Waste Smelting Slag, Yang Huo, Xiang Song, Suiyi Zhu, Yu Chen, Xue Lin, Yaqiong Wu, Zhan Qu, Ting Su, Xinfeng Xie
High-Purity Recycling Of Hematite And Zn/Cu Mixture From Waste Smelting Slag, Yang Huo, Xiang Song, Suiyi Zhu, Yu Chen, Xue Lin, Yaqiong Wu, Zhan Qu, Ting Su, Xinfeng Xie
Michigan Tech Publications, Part 1
In this study, Zn/Cu-bearing smelting slag was recycled via an integrated acid dissolution and hematite precipitation method. The slag was dissolved in nitric acid to generate an acid solution containing 23.5 g/L Fe, 4.45 g/L Zn and 2.81 g/L Cu, which was subjected to hydrothermal treatment with the addition of levulinic acid (LA). More than 99.95% of the initial Fe content was removed as hematite particles with diameters of approximately 200 nm, and the residual Fe concentration in the acid was 0.43 mg/L. The generated hematite contained 97.3% Fe2O3, 0.64% ZnO and 0.58% CuO. Greater than 99% of the initial …
Assessment Of Factors Influencing Migratory Landbird Use Of Forested Stopover Sites Along The Delmarva Peninsula During Autumn Migration, J. Andrew Arnold
Assessment Of Factors Influencing Migratory Landbird Use Of Forested Stopover Sites Along The Delmarva Peninsula During Autumn Migration, J. Andrew Arnold
Biological Sciences Theses & Dissertations
Autumn migration is a time when billions of birds move from breeding grounds in North America to wintering grounds in Central and South America, with many individuals relying on stopover habitats en route for resting and refueling purposes. These stopover sites are critical to the survival of the hundreds of species of migratory landbirds that migrate annually, and thus identifying important stopover sites is a high priority for conserving such taxa. The Delmarva Peninsula; a coastal region of Delaware, Maryland, and Virginia along the mid-Atlantic flyway; consists of forested habitats with ample food and shelter that likely serves as quality …
Native Plant Allelopathy: A Potential Approach To Limit Invasive Grass Encroachment In Thorn Forest Restoration, Emily A. Mullins
Native Plant Allelopathy: A Potential Approach To Limit Invasive Grass Encroachment In Thorn Forest Restoration, Emily A. Mullins
Theses and Dissertations
Less than 5% of the Tamaulipan thorn forest remains in the United States. For this reason, there have been many attempts at restoration of this ecosystem. Oftentimes these attempts are unsuccessful due to the high prevalence of invasive African grasses that outcompete the seedlings. In an effort to improve the efficacy of these restoration efforts, native plant allelopathy has been examined for its ability to exclude invasive guineagrass. Native species were surveyed and selected species were tested for allelopathy in laboratory bioassays. The species that exhibited allelopathy in the laboratory were then evaluated in pot experiments for their ability to …
Past, Current, And Future Potential Distributions Of Red Spruce And Fraser Fir Forests In The Southern Appalachians: Interpreting Possible Impacts Of Climate Change, Danika Mosher
Electronic Theses and Dissertations
Spruce-Fir forests are relicts from the Pleistocene and can only be found within the Southern Appalachians. Analyzing the relationships between species distribution, climatic parameters, topography, and biotic interactions through ecological niche modeling creates prediction maps for conservation efforts. Maxent, Boosted Regression, and Random Forest were utilized to compare which model and variable combinations best approximate the unique mountain forest environment. Maxent with a bias file produced optimal results and was used to examine distributional changes that may occur in the future and how these changes compare to paleo-environmental distributions. Fraser fir has shown evidence of being influenced by changing climates …
Smokejumper Obituary: Frazer, Richard Earl (Missoula 1945), National Smokejumper Association
Smokejumper Obituary: Frazer, Richard Earl (Missoula 1945), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.