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Chemical Processes Influencing Mercury Transformations And Atmospheric Fluxes In The Atmospheric Boundary Layer In Coastal Regions, Susan Warau Gichuki

Doctoral Dissertations

The atmosphere has been recognized as the major contributor of mercury inputs to terrestrial and aquatic environments. While considerable research on atmospheric concentrations and fluxes of Hg has been carried out in the Northern Hemisphere, this is not the case for the Southern hemisphere, remote islands and parts of the open ocean. In this work, atmospheric Hg concentrations and fluxes were determined for locations in South Africa and Bermuda. The concentrations of Hg and other trace metals (Al, Fe, Mn, Co, Ni, Cu, Zn, Cd and Pb) in precipitation are presented for Pretoria, an urban center and Cape Point, a …

Climate Change Impacts On Streamflow And Subbasin- Scale Hydrology In The Upper Colorado River Basin, Darren L. Ficklin, Edwin P. Maurer, Iris T. Stewert

Civil, Environmental and Sustainable Engineering

In the Upper Colorado River Basin (UCRB), the principal source of water in the southwestern U.S., demand exceeds supply in most years, and will likely continue to rise. While General Circulation Models (GCMs) project surface temperature warming by 3.5 to 5.6uC for the area, precipitation projections are variable, with no wetter or drier consensus. We assess the impacts of projected 21st century climatic changes on subbasins in the UCRB using the Soil and Water Assessment Tool, for all hydrologic components (snowmelt, evapotranspiration, surface runoff, subsurface runoff, and streamflow), and for 16 GCMs under the A2 emission scenario. Over the GCM …

Great Book August 18, 2013, Ncsa

NCSA Materials

No abstract provided.

Small-Scale Variability In Benthic Food Webs In The Northeastern Chukchi Sea, Kelley Lannon Tu

Marine Biology

Benthic food web structure can differ over large scales across Arctic shelves in relation to hydrographic conditions, but little is known if such differences also may occur on smaller scales in hydrographically complex areas. The length, food sources, trophic composition, and energy distribution of benthic food webs in three study areas in the northeastern Chukchi Sea (i.e., Klondike, Burger, and Statoil, as part of the Chukchi Sea Environmental Studies Program) were compared using stable isotope analysis and bomb calorimetry. Food web length (four trophic levels), food sources, and linear models of food webs were comparable among areas. Marked differences in …

Multiyear Measurements Of Ebullitive Methane Flux From Three Subarctic Lakes, Martin Wik, Ruth K. Varner, David Bastviken

Faculty Publications

Ebullition (bubbling) from small lakes and ponds at high latitudes is an important yet unconstrained source of atmospheric methane (CH4). Small water bodies are most abundant in permanently frozen peatlands, and it is speculated that their emissions will increase as the permafrost thaws. We made 6806 measurements of CH4 ebullition during four consecutive summers using a total of 40 bubble traps that were systematically distributed across the depth zones of three lakes in a sporadic permafrost landscape in northernmost Sweden. We identified significant spatial and temporal variations in ebullition and observed a large spread in the bubbles' CH4 concentration, ranging …

Faculty Guidebook, August 2013, Lindenwood University

Employee Handbooks

Information and guidelines for Lindenwood University faculty.

Candidatus Syngnamydia Venezia, A Novel Member Of The Phylum Chlamydiae From The Broad Nosed Pipefish, Syngnathustyphle Typhle, Alexander Fehr, Elisabeth Walther, Heike Schmidt-Posthaus, Lisbeth Nufer, Anthony B. Wilson, Miroslav Svercel, Denis Richter, Helmut Segner, Andreas Pospischil, Lloyd Vaughan

Publications and Research

Chlamydia are obligate intracellular bacteria and important pathogens of humans and animals. Chlamydia-related bacteria are also major fish pathogens, infecting epithelial cells of the gills and skin to cause the disease epitheliocystis. Given the wide distribution, ancient origins and spectacular diversity of bony fishes, this group offers a rich resource for the identification and isolation of novel Chlamydia. The broad-nosed pipefish (Syngnathus typhle) is a widely distributed and genetically diverse temperate fish species, susceptible to epitheliocystis across much of its range. We describe here a new bacterial species, Candidatus Syngnamydia venezia; epitheliocystis agent of S. typhle and close relative to …

Geography Professors Contribute To Climate Adaptation Workshop Tanzania Research, Ohio University College Of Arts & Sciences

All Forum Articles

No abstract provided.

Society Of American Archivists Lone Arranger Roundtable Diversity Survey Addendum, Alexis Braun Marks

Faculty Scholarship - University Library

No abstract provided.

Educational Course And Curriculum Needs For Corporate Aviation Managers, Stephen M. Quilty

Journal of Aviation/Aerospace Education & Research

A survey was conducted for the National Business Aircraft Association (NBAA) that identified educational content and knowledge areas thought to be important to the success of a corporate aviation flight department manager or chief pilot. The survey consisted of 49 educational course descriptions. Information about the importance of the courses was sought from NBAA member companies, specifically the flight department manager or chief pilot and the individual that the manager or chief pilot reported to in the company. The data collected were ranked and grouped to reflect those topics that were considered important to the success of a manager. Results …

Leisure Travel Market Potential For A High Speed Civil Transport, Houston B. Smith

Journal of Aviation/Aerospace Education & Research

A second-generation supersonic airliner, known as the High Speed Civil Transport (HSCT), is now on the drawing boards to replace mid-life Concorde and to expand into longer-range markets beginning early next century. Passenger interviews conducted in May 1994 at Schiphol Airport in Amsterdam, Netherlands, evaluated the largely unknown habits and attitudes of specifically leisure travelers, expected to be a significant segment of a successful HSCT market. In addition to establishing value of time, ticket purchasing habits, and general airline traveling attitudes of leisure travelers, results also indicate that HSCT marketers may have to dispel lingering Concorde stereotypes to win public …

An Environmental History Of Bowling Green State University's Community Gardens, Lin-Z Tello

Honors Projects

Colleges and Universities across America are integrating “green” initiatives and environmentally focused programs into campus policy. Community gardens provide an example of one method that institutions are utilizing in an effort to showcase their commitment towards sustainability. This report focuses on establishing a framework that may be utilized in order to create a successful community gardening program at Bowling Green State University (located in Bowling Green, Ohio). Past community gardening programs at Bowling Green State University are analyzed in this study to determine how prior community gardening programs at the University disbanded. Current community gardening programs at the University of …

Zooplankton Trophic Ecology In The San Francisco Estuary During Summer As Determined By Stable Isotope Analysis, Kyla Bradylong, Steven Westbrook, Julien Moderan, Wim Kimmerer

STAR Program Research Presentations

Declines in the abundance of several pelagic fish species in the upper San Francisco Estuary have prompted investigation into food web interactions within the estuary and delta (the lower Sacramento and San Joaquin Rivers). This area is characterized by low primary production and pelagic food webs much longer and reticulated than previously thought, implying low efficiency in the energy transfers from primary producers to planktivorous fish. We determined the carbon and nitrogen stable isotope (SI) composition of zooplankton samples collected monthly between June 2012 and February 2013 at eight stations along the salinity gradient. As consumers SI composition reflects that …

Abundance And Distribution Of Microplankton In The San Francisco Estuary, Carrie Ann Sharitt, Lindsay Sullivan, Wim Kimmerer

STAR Program Research Presentations

Microplankton are a diverse group of planktonic organisms ranging from 0.02 to 0.2 millimeters. Since the group is defined solely by size, it spans numerous taxonomic groups, including both heterotrophs and autotrophs. Microplankton are abundant in all aquatic ecosystems and are important prey for many organism, including bivalves, crustaceans, and fish. Little is known about the microplankton community in the San Francisco Estuary, and information on their abundance and distribution will help scientists better understand their role in local foodwebs. This research quantified the abundance and distribution of microplankton in the San Francisco Estuary from 2010 to 2012. Microplankton were …

Jellyfish Identification And Quantification In The San Francisco Estuary, Amalia Borson, Lindsay L. Sullivan, Wim Kimmerer

STAR Program Research Presentations

As potential predators and competitors of plankton-eating fish, jellyfish have the potential to negatively impact fish populations. Jellyfish were collected weekly with plankton tows from the RombergTiburonCenterpier in Tiburon, CA. Since some jellyfish were too small to identify, one tow was collected and preserved to record abundances, and a second tow was collected to rear jellyfish until distinguishing characteristics were visible enough for identification. Jellyfish in the preserved tows were then identified, measured, and counted, and their abundance (number m^-3) was calculated. Jellyfish from the second tows were reared in plastic buckets that were lightly bubbled using aquarium …

Behavioral Variation Between Two Clades Of Leptasterias Spp., Ashley N. Contreras

STAR Program Research Presentations

Leptasterias spp. are six-rayed sea stars found along the rocky intertidal of the northeast Pacific Alaska to Santa Catalina Island, southern California. In central California, three clades of Leptasterias are found in separate or mixed populations, in diverse habitats that range from shallow pools of seagrass and algae to bare rock exposed to crashing waves. Initial field observations of two clades from different locations suggested that behavioral variation may relate to habitat differences among clades. To measure differences in activity, the righting response was timed at both field sites. As a result of behavioral variation observed in the field, more …

Behavioral Variation Between Two Clades Of Leptasterias Spp., Ashley Contreras, Sarah Cohen

STAR Program Research Presentations

Behavioral Variation Among Two Clades of Leptasterias spp.

Leptasterias spp. are six-rayed sea stars found along the rocky intertidal of the northeast Pacific Alaska to Santa Catalina Island, southern California. In central California, three clades of Leptasterias are found in separate or mixed populations, in diverse habitats that range from shallow pools of sea grass and algae to bare rock exposed to crashing waves. Two clades of Leptasterias were collected, Y-Clade from Mile Rock, San Francisco and L. aequalis from Pigeon Point, San Mateo to test for behavioral variation that may relate to habitat differences among clades. To measure differences …

Temporal Variation In Larval Release In Botrylloides Violaceous, Damion J. Delton, Sarah Cohen

STAR Program Research Presentations

Despite Botrylloides violaceous being a globally invasive species in temperate marine habitats, little is known about it’s natural dispersal behavior. Previous work (Delton et al, 2011) suggests behavioral inferences based on a related and much more commonly studied species may not be appropriate, potentially due to a large size difference between the non-feeding larvae of these two species. Here, we consider factors that may affect dispersal potential. To study how light affects larval release, we measured timing of larval release in the field and compared larval size and time of release. Colonies were collected from floating docks in Richmond, CA …

Estimating Genetic Diversity Of The Invasive Tunicate Didemnum Vexillum In Global Populations, Elizabeth S. Gutierrez, Sarah Cohen

STAR Program Research Presentations

Populations in Point Reyes National Seashore

The presence of the invasive tunicate Didemnum vexillum in the San Francisco Bay was first documented in 1993, and it has since been found in Point Reyes National Seashore. In 2012, 38 samples of D. vexillum were collected from two locations in Point Reyes: Tomales Bay and Drake’s Estero. This summer, DNA from the 38 samples was extracted and analyzed using microsatellite and mitochondrial markers. The goal of this analysis was to determine the level of genetic connectivity between these two populations and their relationship to other global populations in order to answer important …

College Of Arts And Sciences E-News Issue 4: August 2013, College Of Arts And Sciences

College of Arts and Sciences news

No abstract provided.

Feeding Ecology Of Delta Smelt During A Seasonal Pulse Of Turbidity, William A. Hilton, Aaron Johnson, Wim Kimmerer

STAR Program Research Presentations

The delta smelt (Hypomesus transpacificus) is a small, pelagic fish endemic to the San Francisco Estuary (SFE) and protected under federal and state endangered species acts. This study examines the diet of adult delta smelt during their spawning migration in the winters of 2010 and 2012. Delta smelt and their zooplankton prey were sampled concurrently during a seasonal pulse of turbidity at sites along their migratory route from the low salinity zone in Suisun Bay to the fresher waters of the Sacramento/San Joaquin Delta. Gut contents were identified to the lowest possible taxon and counted, along with zooplankton …

Inconsistent Outcomes Of Heterogeneity-Based Management Underscore Importance Of Matching Evaluation To Conservation Objectives, Devan Allen Mcgranahan, David M. Engle, Samuel D. Fuhlendorf, Stephen L. Winter, James R. Miller, Diane M. Debinski

School of Natural Resources: Faculty Publications

Conservation policy often incentivizes managers of human-impacted areas to create landscape heterogeneity to maximize biodiversity. In rangeland, patchy disturbance regimes create landscape heterogeneity (patch contrast), but outcomes of heterogeneity-based management are rarely tested for a universal response. We analyzed four habitat variables—vegetation structure, plant functional group composition, litter cover, and bare ground—from five experimental rangelands in Oklahoma and Iowa, USA. We tested for response consistency to heterogeneity-based management across and within locations. We calculated effect sizes for each variable to compare patch contrast on pastures managed for heterogeneity (patch burn-grazing) and pastures managed for homogeneity (grazing with homogeneous fire regimes). …

Environmental Agency In Read-Alouds, Alandeom W. Oliveira, Patterson Rogers, Cassie F. Quigley, Denis Samburskiy, Kimberly Barss, Seema Rivera

Publications

Despite growing interest in helping students become agents of environmental change who can, through informed decision-making and action-taking, transform environmentally detrimental forms of human activity, science educators have reduced agency to rationality by overlooking sociocultural influences such as norms and values. We tackle this issue by examining how elementary teachers and students negotiate and attribute responsibility, credit, or blame for environmental events during three environmental read-alouds. Our verbal analysis and visual representation of meta-agentive discourse revealed varied patterns of agential attribution. First, humans were simultaneously attributed negative agentive roles (agents of endangerment and imbalance) and positive agentive roles (agents of …

The Changing Face Of China: Chinese Women And Their Awakening Culture, Celia Ella Thornton Corrad

Master of Liberal Studies Theses

The Changing Face of China: Chinese Women and Their Awakening Culture

August 2013 News Releases, University Of Montana--Missoula. Office Of University Relations

University of Montana News Releases, 1928, 1956-present

No abstract provided.

Sodium (Na) Levels In Drinking Water (H20) And Development Of Hypertension In Children, Sara Schiffman

HIM 1990-2015

This integrative review of the literature focused on sodium (Na) content in drinking water (H?O) supplies and the subsequent effect on blood pressure levels in children. Studies for this review were drawn from the Cumulative Index of Nursing and Allied Health, PubMED, Science and Technology Databases, PsychInfo, United States (US) Environmental Protection Agency (EPA) and EPA in Florida websites. Criterion for inclusion in the data base searches were hypertension, high blood pressure, sodium in drinking water, drinking water salinity, children or preg'. Subsequently, further article selection criteria included children (under 18 years of age) and published in the English language …

Evaluating The Success Of Tool-Lending Libraries And Their Contributions To Community Sustainability, Neil Tabor

Department of Environmental Studies: Undergraduate Student Theses

Tool Lending Libraries function much like that of a public library, offering users the chance to check out a variety of tools at no cost, as part of a membership fee or on a tool by tool fee basis, far lower than the purchase price for each tool, and below rates offered by for-profit rental agencies. This study attempts to determine what factors make a successful tool lending library and how these operations contribute to community sustainability. Findings for specific criteria were inconclusive, but suggest it is extremely difficult to isolate variables enough that insight will be provided into criteria …

Determining The Feasibility Of Including Historic Roads And Routes Connecting The Eastern Legacy Sites In The Extension Of The National Historic Lewis And Clark Trail, Kiana Mathew

Department of Environmental Studies: Undergraduate Student Theses

Worked with landscape architects and interdisciplinary study team conducting congressionally mandated Special Resource Study to determine the significance, desirability and feasibility of adding Eastern Sites and Segments, in several Mid-Atlantic, Midwest and Southern states, to the Lewis and Clark National Historic Trail as a formal Trail extension. Duties involve substantial field survey work and travel and included landscape evaluations, site and segment documentation and field verification of mapped data to support a National Historic Trail Extension feasibility determination based on National Trails System Act criteria. Knowledge of planning principles and cultural landscapes, strong computer, research, writing, and communication skills were …

Institutional Data Book 2012-2013, University Of Minnesota, Morris Office Of Institutional Research

Campus Documents and Reports

No abstract provided.

A Fracking Good Solution To The Hydraulic Fracturing Regulation Conundrum, David K. String

Valparaiso University Law Review

No abstract provided.