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The Impact Of Climate Change In Bangladesh On The Rice Market And Farm Households, Mst Ashrafun Nahar

Graduate Theses and Dissertations

Bangladesh is trying to achieve self-sufficiency in domestic rice production but climate change effects on agricultural production makes it challenging to attain the goal. The country is highly vulnerable to the effects of climate change since it is the major cause to rise in sea level, more warm summer, and happening food and cyclone in the country.

This study develops an Aggregate Farm Household Model to analyze the impact of potential land loss and yield reduction from climate change on production, consumption, prices, welfare, and the ability of government to achieve self-sufficiency in rice production. The model is calibrated to …

Gyrfalcon Diet During The Brood Rearing Period On The Seward Peninsula, Alaska, In The Context Of A Changing World, Bryce W. Robinson

Boise State University Theses and Dissertations

As climate change impacts increase so does our need to understand their effects on ecosystem dynamics. I studied Gyrfalcon (Falco rusticolus) diet during the brood rearing period to improve our knowledge on dietary habits during nesting, and provide necessary information for understanding climate change impacts to Arctic ecosystems. I studied diet over two breeding seasons on the Seward Peninsula, Alaska, using two methods: motion-activated cameras and the collection of prey remains. I observed three important dietary shifts: the proportion of ptarmigan in the diet declined significantly throughout the season, the proportion of large prey items declined significantly throughout …

Coral Persistence To Ocean Warming Via Developmental Acclimation, Heather L. Schaneen

HCNSO Student Theses and Dissertations

Scleractinian corals are the ‘engineers’ of tropical coral reef ecosystems. Their three-dimensional structure provides habitat for thousands of fish and invertebrate species. The persistence of corals is threatened by climate change. In this study I investigated if corals may be able to increase tolerance to ocean warming through developmental acclimation, i.e. if corals that experience warmer temperatures during embryonic and larval development are better able to cope with higher temperatures later in life. Larvae of the broadcast spawning coral Montastraea cavernosa were raised at ambient (29°C) and future projected ocean warming temperatures (+2°C, 31°C). After larval settlement, coral juveniles from …

Water, Water Everywhere, But Just How Much Is Clean?: Examining Water Quality Restoration Efforts Under The United States Clean Water Act And The United States-Canada Great Lakes Water Quality Agreement, Jill T. Hauserman

Georgia Journal of International & Comparative Law

No abstract provided.

Biodiversity Of Medicinal Plants In The Highlands: Problems And Perspectives, Vyacheslav Dushenkov

Publications and Research

Climate change is affecting medicinal plants around the world and could ultimately lead to losses of some key species, in particular species endemic to a region and causing plants to migrate to new ranges. As the situation unfolds, climate change may become a pressing issue for the herbal community, affecting medicinal plant supply chains with varying requirements for plant cultivation, resource management in the wild, harvesting, processing, and importantly marketing.

Combinatory Effect Of Changing Co2, Temperature, And Long-Term Growth Temperature On Isoprene Emissions, Michael Cole

DePaul Discoveries

Isoprene, the most abundant hydrocarbon in the atmosphere, plays a significant role in atmospheric chemistry. Its reactions with NO_x lead to the formation of ozone in the lower troposphere, which is harmful to plants and detrimental to human health. As air temperatures and CO₂ concentrations increase with climate change, it is uncertain how isoprene emissions from plants will respond. We hypothesized that isoprene emissions will increase with the combination of increasing temperature and CO­₂ concentrations. We predict that oaks grown at a higher temperature will exhibit an increase in isoprene emissions with combined short-term increases in temperature …

Seawater Acidification More Than Warming Presents A Challenge For Two Antarctic Macroalgal-Associated Amphipods, Julie B. Schram, Kathryn M. Schoenrock, James B. Mcclintock, Charles D. Amsler, Robert A. Angus

Faculty, Staff, and Students

Elevated atmospheric pCO2 concentrations are triggering seawater pH reductions and seawater temperature increases along the western Antarctic Peninsula (WAP). These factors in combination have the potential to influence organisms in an antagonistic, additive, or synergistic manner. The amphipods Gondogeneia antarctica and Paradexamine fissicauda represent prominent members of macroalgal-associated mesograzer assemblages of the WAP. Our primary objective was to investigate amphipod behavioral and physiological responses to reduced seawater pH and elevated temperature to evaluate potential cascading ecological impacts. For 90 d, amphipods were exposed to combinations of seawater conditions based on present ambient (pH 8.0, 1.5°C) and predicted end-of-century conditions (pH …

Monitoring And Mitigation Of Elevated Co2 Impacts Using Microalgae, Terry-Rene Wiesner Brown

USF Tampa Graduate Theses and Dissertations

Climate change is arguably the greatest environmental and economic challenge of our time. There are considerable documented and projected impacts to both human and natural systems as a result of climate change. These impacts include changes in temperature, sea level, precipitation patterns, and biogeography of ecologically and economically relevant species, including pathogens. One of the main drivers of climate change is elevated levels of atmospheric carbon dioxide (CO₂), a greenhouse gas. Since pre-industrial times, atmospheric CO₂ levels have increased from approximately 280 ppm to over 400 ppm, as a result of fossil fuel combustion, cement production and …

Altitudinal Gradients Do Not Predict Plant-Symbiont Responses To Experimental Warming, Melanie R. Kazenel

Biology ETDs

Fungal symbionts, ubiquitous inhabitants of above- and belowground plant tissues, can play important roles in increasing plant tolerance to abiotic and biotic stress. Disruption of plant-fungal interactions may therefore have important consequences for plant responses to climate change. Both altitudinal gradients and warming experiments can be useful tools for understanding responses of symbioses to climate shifts, but the degree to which altitudinal patterns will predict species responses to warming has received little attention for plant-symbiont interactions. This study combined surveys along replicated altitudinal gradients with a long-term warming experiment at the Rocky Mountain Biological Laboratory (RMBL) in Colorado, USA to …

Agenda: Coping With Water Scarcity In River Basins Worldwide: Lessons Learned From Shared Experiences, University Of Colorado Boulder. Getches-Wilkinson Center For Natural Resources, Energy, And The Environment

Coping with Water Scarcity in River Basins Worldwide: Lessons Learned from Shared Experiences (Martz Summer Conference, June 9-10)

Water scarcity is increasingly dominating headlines throughout the world. In the southwestern USA, the looming water shortages on the Colorado River system and the unprecedented drought in California are garnering the greatest attention. Similar stories of scarcity and crisis can be found across the globe, suggesting an opportunity for sharing lessons and innovations. For example, the Colorado River and Australia's Murray-Darling Basin likely can share many lessons, as both systems were over-allocated, feature multiple jurisdictions, face similar climatic risks and drought stresses, and struggle to balance human demands with environmental needs. In this conference we cast our net broadly, exploring …

Learning To Live With The Trickster: Narrating Climate Change And The Value Of Resilience Thinking, Robin Kundis Craig

Pace Environmental Law Review

This article is based on the 2015 Pace Garrison Lecture that occurred on April 1, 2015. Fittingly for a talk given on April Fool’s Day, this article focuses on tricksters. It posits that framing climate change as one incarnation of a mythological trickster can give us a better cultural narrative framework for thinking about environmental, natural resources, and energy law and policy in a climate change era. The trickster narrative can helpfully displace the dominant engineering framework that informs most of American10 environmental, natural resources, and energy law and policy and open the way to a more productive policy context …

Reevaluating Wilderness Classification And Management In The Face Of Climate Change: A Reconsideration Of Values And Ecology, Katherine Fiedler

Pace Environmental Law Review

In recognizing that the very nature of wilderness is a human construct, the values sought to be preserved can and should be reevaluated, considering the importance of wilderness in light of climate change and global ecosystem resilience, as well as how wilderness is designated and managed. Furthermore, the values that wilderness provides us will dramatically increase as climate change proceeds. Section II of this article describes the basics of wilderness protection, including the evolution of our relationship with wilderness, the history of the Wilderness Act, and what, how, and why wilderness is protected under the Act. Section III explores how …

Long-Term Sandhills Prairie Responses To Precipitation, Temperature, And Cattle Stocking Rate, John A. Guretzky, Cheryl Dunn, Heidi L. Hillhouse

Department of Agronomy and Horticulture: Faculty Publications

Understanding of Sandhills prairie, the most expansive sand dune region stabilized by perennial grasses in the Western Hemisphere, is limited by lack of long-term vegetation data. We used a 26-year dataset to evaluate Sandhills prairie responses to yearto- year variation in precipitation, temperature, and cattle stocking rate. Basal cover, a measurement that is constant seasonally and used to detect long-term changes in bunchgrass vegetation, was measured in 38–40 permanent plots positioned along four transects spanning 769 ha from 1979 to 2007. Across this period, total basal cover averaged 2.4 % and was dominated by warm-season grasses (81.1 %). Schizachyrium scoparium …

Effects Of Global Change On Algal Biomineralization And Benthic Community Interactions On California's Temperate Rocky Reefs, Emily Marie Donham

Master's Theses

Marine ecosystems are threatened by CO2-driven global change, such as ocean warming and acidification (OA). The primary objectives of this study were to: 1) assess the response of the coralline red alga, Calliarthron cheilosporioides, to global change; and 2) investigate the responses of California’s kelp forest communities to OA and sea urchin grazing. Results indicated that C. cheilosporioides growth and calcification were reduced under both increased temperatures and increased pCO2 despite increased photosynthetic rates in high pCO2 conditions. Mineralogy did not differ among treatments as a function of warming or acidification. Differences were observed in Mg incorporation into calcified walls …

The Abiotic And Biotic Drivers Of Rapid Diversification In Andean Bellflowers (Campanulaceae), Laura P. Lagomarsino, Fabien L. Condamine, Alexandre Antonelli, Andreas Mulch, Charles C. Davis

Faculty Publications

© 2016 New Phytologist Trust. The tropical Andes of South America, the world's richest biodiversity hotspot, are home to many rapid radiations. While geological, climatic, and ecological processes collectively explain such radiations, their relative contributions are seldom examined within a single clade. We explore the contribution of these factors by applying a series of diversification models that incorporate mountain building, climate change, and trait evolution to the first dated phylogeny of Andean bellflowers (Campanulaceae: Lobelioideae). Our framework is novel for its direct incorporation of geological data on Andean uplift into a macroevolutionary model. We show that speciation and extinction are …

The Abiotic And Biotic Drivers Of Rapid Diversification In Andean Bellflowers (Campanulaceae), Laura P. Lagomarsino, Fabien L. Condamine, Alexandre Antonelli, Andreas Mulch, Charles C. Davis

Faculty Publications

© 2016 New Phytologist Trust. The tropical Andes of South America, the world's richest biodiversity hotspot, are home to many rapid radiations. While geological, climatic, and ecological processes collectively explain such radiations, their relative contributions are seldom examined within a single clade. We explore the contribution of these factors by applying a series of diversification models that incorporate mountain building, climate change, and trait evolution to the first dated phylogeny of Andean bellflowers (Campanulaceae: Lobelioideae). Our framework is novel for its direct incorporation of geological data on Andean uplift into a macroevolutionary model. We show that speciation and extinction are …

Factors Affecting Climate Change Mitigation Policy Implementation, Kelly M. Anderson

Undergraduate Honors Theses

Why do some states have policies that aggressively reduce carbon emissions, while others ignore the threat of climate change? In a world where increasingly extreme weather patterns threaten food production and species extinction, and where rising sea levels and frequent storms damage coastal infrastructure, it is now essential for states to mitigate these effects.

My paper analyzes the role of media attention on climate change and environmental association membership rates on the most recent climate change mitigation policies of South Africa, the United States, and Germany. It argues that media and environmental associations influence a population’s desire to reduce carbon …

A Multiple‐Scale Assessment Of Long‐Term Aspen Persistence And Elevational Range Shifts In The Colorado Front Range, Mario Bretfeld, Scott B. Franklin, Robert K. Peet

Aspen Bibliography

Aspen forests and woodlands are some of the most species‐rich forest communities in the northern hemisphere. Changing climate, altered disturbance regimes, land use, and increased herbivore pressure threaten these forests both in Eurasia and North America. In addition, rapid mortality dubbed “Sudden Aspen Decline” is a concern for aspen's long‐term presence in the western United States, especially Colorado and Utah. Yet it is still unclear whether aspen is persistent or declining at the landscape scale. We assessed aspen persistence at different spatial scales in the Colorado Front Range by resampling 89 plots containing aspen from among 305 vegetation plots sampled …

Assessing The Impacts Of Climate And Land Use Changes On Water Quantity And Quality In Mississippi, Abdullah Oda Dakhlalla

Theses and Dissertations

This study used the Soil and Water Assessment Tool (SWAT) to model 2 watersheds in Mississippi, which are the Lower Pearl River Watershed (LPRW) and the Big Sunflower River Watershed (BSRW), to simulate streamflow, groundwater storage and recharge, sediments, nutrients, and bacteria transport. The LPRW model was calibrated and validated for daily streamflow at 4 locations with R2 ranging from 0.49 to .90 and Nash-Sutcliffe Efficiency (NSE) ranging from 0.49 to 0.84. In the BSRW, the model showed good to very good performance for daily streamflow simulation (R2 = 0.53-0.75 and NSE = 0.49-0.72) and seasonal groundwater table depth fluctuations …

Lessons From Rebuild By Design, Tara Eisenberg

May 6, 2016: Planning for Resilience in Hampton Roads

No abstract provided.

Temperature Variability And Multiple Environmental Stressors: How Will Tadpole Performance Change With Our Climate?, Diana C. Macklem, Tracy A. G. Rittenhouse, Ashley M. Helton, Jason H. O'Connor, Jaron T. Kolek

University Scholar Projects

This project seeks to analyze how predicted changes in climate and its interactions with other environmental factors will influence tadpole growth and development. Our first study examined how the frequency and magnitude of temperature variability affect wood frog and gray tree frog tadpole performance. We found that performance responses to repeatedly fluctuating treatments did not differ significantly from constant temperatures held at the same mean for wood frog tadpoles. However, elevated mean temperatures of 26 degrees Celsius caused tadpoles to metamorphose early, suggesting a potential developmental threshold. We found that gray tree frog performance was affected by fluctuating temperature treatments, …

A Threatened Ecosystem In A Human-Dominated Landscape: Tidal Marsh Conservation In The Face Of Sea-Level Rise, Christopher R. Field

Doctoral Dissertations

Biological conservation is a crisis-driven discipline that is inextricably linked to its broader social, political, and economic context. Historically, conservation research has often been conducted within ecology disciplines and with limited links to this broader context, which has contributed to a gap between research and its real-world implementation. One impediment to creating stronger interdisciplinary links is that it requires the integration of many types of data from across a range of disciplines. Owing to the difficulty of such integration, questions related to the relative importance of different types of knowledge in conservation decision-making have remained largely unexplored. I collected data …

Cal Poly Climate Action Plan, Adrienne Greve, Chris Clark, William Riggs, Jesse A. Carpentier, Curran K. Lord-Farmer, Crp 410/ 411 Community Planning Lab

City and Regional Planning Studios and Projects

The Cal Poly Climate Action Plan (PolyCAP) is designed to achieve the California State University (CSU) Chancellor’s mandate to reduce greenhouse gas (GHG) emissions to 1990 levels by 2020 and 80% below 1990 levels by 2040 (CSU, 2014). California Polytechnic State University, San Luis Obispo (Cal Poly) Facility Management and Development (FM&D) and the City and Regional Planning (CRP) Senior Community Planning Laboratory developed the PolyCAP during the Fall 2015 and Winter 2016 quarters, with editing and refinement in subsequent quarters. The goal of the PolyCAP is to reduce Cal Poly’s GHG emissions and to adapt the Campus to a …

Simulation Of Conservation Practice Effects On Water Quality Under Current And Future Climate Scenarios, Carlington W. Wallace

Open Access Dissertations

Analysis of the effects of implementing different conservation practices, as well as increased levels of conservation practices under existing and projected future climate, will determine if current conservation practice recommendations will be sufficient to maintain soil and water resources. The Soil and Water Assessment Tool (SWAT) was used to study four watersheds of different sizes (CCW = 680 km2, F34 = 183 km2, AXL = 42 km 2 and ALG = 20 km2) located in Northeastern Indiana. The overarching goal of this study was to evaluate the effect of various agricultural practices on runoff and agricultural chemical losses under current …

Investigation Of Climate Variability And Climate Change Impacts On Corn Yield In The Eastern Corn Belt, Usa, Ruoyu Wang

Open Access Dissertations

The increasing demand for both food and biofuels requires more corn production at global scale. However, current corn yield is not able to meet bio-ethanol demand without jeopardizing food security or intensifying and expanding corn cultivation. An alternative solution is to utilize cellulose and hemi-cellulose from perennial grasses to fulfill the increasing demand for biofuel energy. A watershed level scenario analysis is often applied to figure out a sustainable way to strike the balance between food and fuel demands, and maintain environment integrity. However, a solid modeling application requires a clear understanding of crop responses under various climate stresses. This …

Cultural And Economic Factors That Influence Brazilian Public Opinion On Climate Change, Jenna Williams

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Climate change is a commons problem of global proportions. The effects of climate change threaten not only the natural world, but also the human systems that we have established (IPCC 2014, 4). The devastating effects of climate change will not be confined to those regions of the world that have contributed the most to this problem. Already, every continent and ocean has been touched by climate change (IPCC 2014, 4).

The Effects Of Large Herbivores On Soil Organic Matter Quality In Terrestrial Ecosystems, Adrian Alvarez

Renée Crown University Honors Thesis Projects - All

Understanding the factors that control the natural fluxes of carbon into and out of terrestrial ecosystems is of paramount importance to forecast and adapt to climate change. Soil respiration – the release of carbon dioxide from roots and soil micro-organisms– is considered to be the largest terrestrial source of carbon dioxide. Microbial respiration, the least understood component of soil respiration, is to a great extent determined by soil organic matter quality, reflecting the relative fractions of labile and recalcitrant soil carbon. The goal of this research was to examine how herbivory affects soil organic matter quality across a wide range …

"All I Do Is Win": The No-Lose Strategy Of Cafo Regulation Under The Caa, Karl J. Worsham

Journal of Food Law & Policy

Corporate farms, often known as concentrated animal feeding operations ("CAFO'), provide inexpensive animal products but do so by externalizing the cost of their operation in the form of environmental harms and risks to human health. This article explores one possible approach to mitigating CAFO-caused harms. It argues that CAFO regulation under any one of three Clean Air Act ("CAA ") programs will result in net benefits, not just for air quality, but also for other CAFO-caused harms and thus, that CAA regulation of CAFOs is a no-lose strategy. The article then goes further to conclude that, while regulation under any …

A World In Flux : Envisioning Climate Change From An Ecocentric Perspective., Katlyn Brumfield

College of Arts & Sciences Senior Theses

No abstract provided.

Damsels In Distress: A Study Of The Effect Of Temperature On Damselfly Competitive Interactions, Madison Pitts

Biological Sciences Undergraduate Honors Theses

Temperature has a fundamental role in shaping numerous physiological aspects of organisms, such as growth rate, that determine an organism's performance. Due to global climate change, temperature is projected to keep increasing. As temperature increases, so does an organism’s growth rate. Also, as competition increases organisms’ growth rate decreases. While studies have examined these factors individually, no experiments have assessed the combined impact of temperature and competition on organism’s growth rates. The experiment we conducted manipulated temperature and density in order to project what will happen as a result of rising temperatures.