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Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
Resolving The Evolutionary History Of Campanula (Campanulaceae) In Western North America, Barry M. Wendling, Kurt E. Garbreath, Eric G. Dechaine
Resolving The Evolutionary History Of Campanula (Campanulaceae) In Western North America, Barry M. Wendling, Kurt E. Garbreath, Eric G. Dechaine
Biology Faculty and Staff Publications
Recent phylogenetic works have begun to address long-standing questions regarding the systematics of Campanula (Campanulaceae). Yet, aspects of the evolutionary history, particularly in northwestern North America, remain unresolved. Thus, our primary goal in this study was to infer the phylogenetic positions of northwestern Campanula species within the greater Campanuloideae tree. We combined new sequence data from 5 markers (atpB, rbcL,matK, and trnL-F regions of the chloroplast and the nuclear ITS) representing 12 species ofCampanula with previously published datasets for worldwide campanuloids, allowing us to include approximately 75% of North American Campanuleae in a phylogenetic …
The Influence Of Inoculated And Native Ectomycorrhizal Fungi On Morphology, Physiology And Survival Of American Chestnut, Jenise Bauman, Carolyn H. Keiffer, Shiv Hiremath
The Influence Of Inoculated And Native Ectomycorrhizal Fungi On Morphology, Physiology And Survival Of American Chestnut, Jenise Bauman, Carolyn H. Keiffer, Shiv Hiremath
College of the Environment on the Peninsulas Publications
The objective of this study was to evaluate the influence of five different species of ectomycorrhizal (ECM) fungi on root colonization of native fungi on putatively blight resistant chestnut hybrids (Castanea dentata x C. mollissima) in a reclaimed mine site in central Ohio. The five species were Hebeloma crustuliniforme, Laccaria bicolor, Scleroderma polyrhizum, Amanita rubescens, and Suillus luteus. We used a combination of DNA sequencing of the ITS region and phylogenetic analyses to indentify fungi found on roots after 12 and 18 months in the field. Non-metric multidimensional scaling (NMDS) ordinations were used to determine …
Preservation And Use Of Natural Resources In The Developing World: A Case Study Of The Can Gio Biosphere Reserve, Ho Chi Minh City, Vietnam, Emily Green
Occam's Razor
Developing nations often overlook the environmental effects of industrialization. However, these nations need healthy, sustainable resources in order to become prosperous and stable countries. Additionally, developed nations depend upon the natural resources of developing nations as raw materials. Loss of natural resources in developing nations therefore has effects at both national and global levels. A key challenge across the globe is balancing the human need for development with the necessity of the sustainable use and protection of natural resources. In the process of finding this balance, developing nations are revising both their national definition of conservation as well as the …
Occam's Razor Vol. 1 - Full (2011)
Biodiversity And Emerging Biogeography Of The Neutrophilic Iron-Oxidizing Zetaproteobacteria, Sean M. Mcallister, Richard E. Davis, Joyce M. Mcbeth, Bradley M. Tebo, David Emerson, Craig L. Moyer
Biodiversity And Emerging Biogeography Of The Neutrophilic Iron-Oxidizing Zetaproteobacteria, Sean M. Mcallister, Richard E. Davis, Joyce M. Mcbeth, Bradley M. Tebo, David Emerson, Craig L. Moyer
Biology Faculty and Staff Publications
Members of the neutrophilic iron-oxidizing candidate class Zetaproteobacteria have predominantly been found at sites of microbially mediated iron oxidation in marine environments around the Pacific Ocean. Eighty-four full-length (>1,400-bp) and 48 partial-length Zetaproteobacteria small-subunit (SSU) rRNA gene sequences from five novel clone libraries, one novel Zetaproteobacteria isolate, and the GenBank database were analyzed to assess the biodiversity of this burgeoning class of the Proteobacteria and to investigate its biogeography between three major sampling regions in the Pacific Ocean: Loihi Seamount, the Southern Mariana Trough, and the Tonga Arc. Sequences were grouped into operational taxonomic units (OTUs) on the basis …
Ultra-Diffuse Hydrothermal Venting Supports Fe-Oxidizing Bacteria And Massive Umber Deposition At 5000 M Off Hawaii, Katrina J. Edwards, B. T. Glazer, Olivier J. Rouxel, Wolfgang Bach, D. Emerson, Russ E. Davis, Brandy M. Toner, C. S. Chan, B. M. Tebo, Hubert Staudigel, Craig L. Moyer
Ultra-Diffuse Hydrothermal Venting Supports Fe-Oxidizing Bacteria And Massive Umber Deposition At 5000 M Off Hawaii, Katrina J. Edwards, B. T. Glazer, Olivier J. Rouxel, Wolfgang Bach, D. Emerson, Russ E. Davis, Brandy M. Toner, C. S. Chan, B. M. Tebo, Hubert Staudigel, Craig L. Moyer
Biology Faculty and Staff Publications
A novel hydrothermal field has been discovered at the base of Lōihi Seamount, Hawaii, at 5000 mbsl. Geochemical analyses demonstrate that ‘FeMO Deep’, while only 0.2 °C above ambient seawater temperature, derives from a distal, ultra-diffuse hydrothermal source. FeMO Deep is expressed as regional seafloor seepage of gelatinous iron- and silica-rich deposits, pooling between and over basalt pillows, in places over a meter thick. The system is capped by mm to cm thick hydrothermally derived iron-oxyhydroxide- and manganese-oxide-layered crusts. We use molecular analyses (16S rDNA-based) of extant communities combined with fluorescent in situ hybridizations to demonstrate that FeMO Deep deposits …
Changes In Macromoth Community Structure Following Deforestation In Western Washington State, Matthew R. Fisher
Changes In Macromoth Community Structure Following Deforestation In Western Washington State, Matthew R. Fisher
WWU Graduate School Collection
Timber management, especially clear-cut logging, dramatically alters forest ecosystems. In temperate conifer forests of the Pacific Northwest, succession following deforestation is a slow process, lasting several decades for early and mid-successional stages and several hundred years for late maturity and old growth stages. Despite the history of logging in the region and the importance of these forests to wildlife, it is not well understood how animal communities respond to forest disturbance, particularly over successional gradients. In this study, I examined the response of macromoth communities to habitat change in western Washington State by sampling moths along a chronosequence of previously-logged …
Comparative Genomics Of Bistorta Vivipara, Daniel F. Bronny
Comparative Genomics Of Bistorta Vivipara, Daniel F. Bronny
WWU Graduate School Collection
High Northern latitudes are predicted to change considerably in forthcoming climate scenarios, and empirical evidence detailing a species' capacity to cope with extreme variability is needed. Tundra plants make for an excellent study because their genetic histories were impacted by the dramatic transitions of historic glacial and interglacial ages. Here, thousands of restriction site-associated DNA (RAD) markers from geographically isolated Alaskan (Arctic) and Coloradan (Alpine) Bistorta vivipara (Polygonaceae) populations are compared in an investigation of evolutionary response to rapid climate change. Non-coding nuclear markers were analyzed in a coalescent framework to estimate an effective ancestral population size (Na) and divergence …
Biodiversity And Emerging Biogeography Of The Neutrophilic Iron-Oxidizing Zetaproteobacteria, Sean M. Mcallister
Biodiversity And Emerging Biogeography Of The Neutrophilic Iron-Oxidizing Zetaproteobacteria, Sean M. Mcallister
WWU Graduate School Collection
Members of the neutrophilic iron-oxidizing candidate class "Zetaproteobacteria" have predominantly been found at sites of microbially mediated iron oxidation in marine environments around the Pacific Ocean. Eighty-four full-length (>1,400 bp) and forty-eight partial-length Zetaproteobacteria small subunit ribosomal RNA (SSU rRNA) gene sequences from five novel clone libraries, one novel Zetaproteobacteria isolate, and the GenBank database were analyzed to assess the biodiversity of this burgeoning class of the Proteobacteria and to investigate its biogeography between three major sampling regions in the Pacific Ocean: Loihi Seamount, the Southern Mariana Trough, and the Tonga Arc. Sequences were grouped into operational taxonomic units …
The Effects Of Environmental Stressors On Oxidant Accumulation By Ulvoid Algae And The Impacts Of Hydrogen Peroxide On Larval Metacarcinus Magister Survival And Development, David H. Van Hees
WWU Graduate School Collection
Current global conditions are leading to increased numbers of harmful macroalgal blooms, which have detrimental effects on the ecosystems in which they occur. Macroalgae produce harmful chemicals such as ROS (reactive oxygen species) and dopamine. These chemicals may be produced in high quantities in response to environmental stresses, such as increasing water temperature, emersion, hypoxia, and then subsequently introduced into the aquatic environment. In Washington State, little work has been done to quantify ROS accumulation by macroalgae, or investigate oxidant impacts on invertebrates. This project investigated the impacts of environmental (emersion, water temperature, hypoxia) and chemical (dopamine) stressors on oxidant …