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Bryoecology In The American Southwest: Patterns Of Biodiversity And Responses To Global Change, John Carroll Brinda

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation combines investigation of the large-scale responses of bryophyte species diversity and distribution with small-scale physiological adaptations to global change. These two areas of inquiry are linked because one way to predict plant species responses to global change is to examine their distribution across current ecological gradients produced by factors such as latitude and elevation. By examining these biogeographic patterns one can identify those species that have a narrow tolerance and therefore are most sensitive to change. Selected bryophytes might then be used as indicator species in long-term monitoring programs. Where historical data exist, these can be used to …

Climate Change And The Conservation Of Archaeological Sites: A Review Of Impacts Theory, Caithleen Daly

Articles

This article identifies the current state of knowledge in the literature regarding the possible impacts of future climatic change on archaeological sites and ensembles. Drawing on the literature review a matrix of potential impacts is collated to provide a simplified overview. This theoretical ‘menu’ is then tested by applying it to a vulnerability assessment of the World Heritage site of Skellig Michael in Ireland. The case study results reveal some knowledge gaps, particularly in regard to the impacts of climate change on buried archaeological remains.

Horticultural Pest Management And The African Economy: Successes, Challenges And Opportunities In A Changing Global Environment, S. Ekesi, A. Chabi-Olaye, S. Subramanian, C. Borgemeister

All Peer-Reviewed Publications

In many African countries, horticulture is the fastest growing agricultural sub-sector contributing significantly to national incomes. Diverse vegetables, fruits and spices are grown for domestic and export markets. Horticultural exports in Africa has increased by more than 50% in recent years and currently contributes >20% of agricultural exports by volume and income generation. Despite the growth, production has not kept pace with increasing demand due largely to biotic constraints attributed to arthropod pests. Agricultural research aimed at reducing insect pest damage can lead to increased horticultural production and improved rural livelihoods. icipe in collaboration with National Agricultural Research and Extension …

A Tradable Conservation Easement For Vulnerable Conservation Objectives, W. William Weeks

Law and Contemporary Problems

Weeks talks about tradable conservation easement for vulnerable conservation objectives. The critical conservation objectives in some conservation easements will probably be compromised by the effects of climate change in the relatively near future. Conservation easements broadly intended and drafted to serve those kinds of general purposes are, as a group, unlikely to be so acutely affected by changing ecological conditions that their broad purposes will cease, over time, to be served.

The Justiciability Of Climate Change: Acomparison Of Us And Canadian Approaches, Hugh Wilkins

Dalhousie Law Journal

Climate change-related disputes, which often include novel, complex,or politically sensitive matters, have experienced a mixed reception by the courts. Defendants both in Canada and the United States have raised the issue of justiciabilitythe question of whether a matter is of the quality or state of being appropriate or suitable for review by a court-with some success in attempts to have these cases summarily dismissed. The author reviews the types ofclimate change cases that have been launched, examines the US and Canadian laws of justiciability analyzes the.paths in which the caselaw regarding justiciability in these countries is headed, and suggests how …

Conservation Easements At The Climate Change Crossroads, Jessica Owley

Law and Contemporary Problems

Owley discusses the conundrum that occurs when climate change leads to a landscape that conflicts with conservation easement terms. A conservation easement that is too changeable endangers the perpetual protection that is the cornerstone of conservation easements. But, forcing the landscape to fit a conservation easement requires active management, something more often associated with fee-simple ownership.

Climate Change Policy Could Make Keystone Xl Obsolete, Adam Liska

Adam Liska Papers

Clearly the Keystone XL pipeline threatens both surface and ground water that sustains the agricultural economy of Nebraska, but the projected profitability of tar sands oil and the pipeline operation are dependent on the future economics of climate change. Three recent scientific studies estimate the total carbon intensity of tar sands-based gasoline from Alberta (from both production and burning of the fuel) at an average of roughly 22 percent higher than U.S. gasoline in 2005, with the range of average carbon intensities for tar sands-gasoline at 16 to 27 percent higher than most other sources.

The Potential For Indicators In The Management Of Climate Change Impacts On Cultural Heritage, Caithleen Daly

Conference papers

The global scale and unpredictable nature of climate change impacts on cultural heritage poses a challenge for conservation management. This article explores the potential of indicators as an aid for decision makers in the heritage sector. The author proposes a new indicator tool for addressing long-term stone recession impacts that may be related to climate change. The indicator is being installed at two World Heritage sites in Ireland but no results are available. The prototype was developed during doctoral research at the Technological University of Dublin.

Oxygen Isotopes In Diatom Silica : A New Understanding Of Silica-Water Oxygen Isotope Fractionation In Diatom Frustules And An Application Of Diatom D180 Values As A Record Of Paleohydrologic Variability In A Middle-Pleistocene Lacrustine Core From The Valles Caldera, New Mexico, Justin Dodd

Earth and Planetary Sciences ETDs

I present oxygen isotope data from modern diatom frustules that were collected from freshwater systems in the Jemez Mountains of northern New Mexico. The frustules display a constant silica-water fractionation over the measured temperature range (5.1 to 37.8°C) regardless of species. This relationship is in close agreement with other published silica-water fractionation factors for laboratory cultured diatom samples; however, it is as much as 8° lower than equilibrium quartz-water fractionations and 3 to 4° lower than observed silica water fractionations in diatomaceous silica collected from sediment traps and sediment cores. Post mortem loss of organic material results in an alteration …

Severe 2010 Cold-Water Event Caused Unprecedented Mortality To Corals Of The Florida Reef Tract And Reversed Previous Survivorship Patterns, Diego Lirman, Stephanie Schopmeyer, Derek Manzello, Lewis J. Gramer, William F. Precht, Frank E. Muller-Karger, Kenneth Banks, Brian Barnes, Erich Bartels, Amanda Bourque, James Byrne, Scott Donahue, Janice Duquesnel, Louis Fisher, David S. Gilliam, James C. Hendee, Meaghan E. Johnson, Kerry Maxwell, Erin Mcdevitt, Jamie Monty, Digna Rueda, Rob Ruzicka, Sara Thanner

Marine & Environmental Sciences Faculty Articles

Background

Coral reefs are facing increasing pressure from natural and anthropogenic stressors that have already caused significant worldwide declines. In January 2010, coral reefs of Florida, United States, were impacted by an extreme cold-water anomaly that exposed corals to temperatures well below their reported thresholds (16°C), causing rapid coral mortality unprecedented in spatial extent and severity.

Methodology/Principal Findings

Reef surveys were conducted from Martin County to the Lower Florida Keys within weeks of the anomaly. The impacts recorded were catastrophic and exceeded those of any previous disturbances in the region. Coral mortality patterns were directly correlated to in-situ and satellite-derived …

Evolvability In The Face Of Climate Change: The Effects Of Novel Genetic Variation On Phenotypic Integration And Plasticity To Elevated Carbon Dioxide In Arabidopsis Thaliana, Mark Jonas

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Carbon dioxide is an important selective agent in the evolution of plants. The rapid increase in the concentration of atmospheric carbon has given considerable impetus to studies exploring the impact of elevated carbon dioxide (eCO2) on plant populations. While eCO2 has been shown to affect plants at multiple levels of biological organization--from gene expression to community structure--our understanding of plant evolutionary dynamics in eCO2 environments is limited. A key step in elucidating evolutionary responses is characterizing the effects of novel genetic variation on patterns of phenotypic plasticity and integration among ecologically relevant traits. This approach can provide insights into the …

Going All The Way: Phylogeography And Trans-Pacific Divergence Genetics Of Nucella Lima, Lisa Cox

All Theses

Fluctuating climate over the last 2 million years (MY) has repeatedly caused latitudinal shifts in species distributions, fueling the hypothesis that the glacial-interglacial dynamics of the Pleistocene could have driven regional genetic differentiation and potentially speciation. For species whose distributions spanned the entire North Pacific, regional extinction of northern populations during cooler glacial periods may have resulted in isolation and genetic differentiation of eastern and western populations. To test this hypothesis, I gathered genetic data from a rocky shore intertidal gastropod, Nucella lima, whose current (i.e. warm interglacial) distribution spans the entire North Pacific. Mitochondrial DNA sequences are genetically structured …

A Dragon Eyes The Top Of The World: Arctic Policy Debate And Discussion In China, David Curtis Wright

CMSI Red Books

The Chinese are increasingly interested in the effects of global climate change and the melting of the Arctic ice cap, especially as they pertain to emergent sea routes, natural resources, and geopolitical advantage. China seems to see the overall effect of Arctic climate change as more of a beckoning economic opportunity than a looming environmental crisis. Even though it is not an Arctic country, China wants to be among the first states to exploit the region’s natural resource wealth and to ply ships through its sea routes, especially the Northwest Passage.

Mammalian Diversification Across The Holarctic: Spatiotemporal Evolution In Response To Environmental Change, Andrew G. Hope

Biology ETDs

The primary focus in this dissertation is on the processes of environmental change that drive evolution. We are currently witnessing unparalleled changes in climate and associated changes in biotic communities. With a growing understanding that climate and habitat change, coupled with natural variability, will have an increased influence on biota into the future, it is our responsibility to learn how best to manage and conserve the Earths natural resources. Among other things, this will require a firmer understanding of biodiversity, life histories, evolutionary relationships among species, and community dynamics over multiple species. One method of understanding how species will respond …

Identifying Changes In Climatic Trends And The Fingerprints Of Landuse And Landcover Changes In The High Plains Of The Usa, Denis Mutiibwa

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Human activities such as conversion of natural ecosystem to croplands and urban-centers, deforestation and afforestation impact biophysical properties of land surface such as albedo, energy balance, and surface roughness. Alterations in these properties affect the heat and moisture exchanges between the land surface and atmospheric boundary layer. The objectives of this research were; (i) to quantitatively identify the High plains’ regional climate change in temperatures over the period 1895 to 2006, (ii) detect the signatures of anthropogenic forcing of LULC changes on the regional climate change of the High Plains, and (iii) examine the trends in evolving regional latent heat …

A Look At 20th Century Droughts, Vijay P. Singh, Ashok K. Mishra

2011 Symposium on Data-Driven Approaches to Droughts

Droughts exercise a profound effect on the social and economic fabric of nations. Many nations of the world experienced droughts encompassing the full spectrum of severity, areal extent and duration. The result has been that the economic development was hampered and many countries have not yet recouped fully from the ravages of droughts. The first decade of the 21st century has also witnessed varying degrees of droughts across the globe. Therefore, we ask the following questions: (a) Do droughts affect every part of the world? (b) Are there similarities in major droughts around the world? (c) Are climate change and …

Effective Access To Justice: Applying The Parens Patriae Standing Doctrine To Climate Change-Related Claims Brought By Native Nations, Elizabeth Ann Kronk

Public Land & Resources Law Review

No abstract provided.

Projecting Climate Change Effects On Forest Net Primary Productivity In Subtropical Louisiana, Usa, Fugui Wang, Y. Jun Xu, Thomas J. Dean

Faculty Publications

This study projected responses of forest net primary productivity (NPP) to three climate change scenarios at a resolution of 5 km × 5 km across the state of Louisiana, USA. In addition, we assessed uncertainties associated with the NPP projection at the grid and state levels. Climate data of the scenarios were derived from Community Climate System Model outputs. Changes in annual NPP between 2000 and 2050 were projected with the forest ecosystem model PnET-II. Results showed that forest productivity would increase under climate change scenarios A1B and A2, but with scenario B1, it would peak during 2011-2020 and then …

General Design Principles For Resilience And Adaptive Capacity In Legal Systems--With Applications To Climate Change Adaptation, J.B. Ruhl

Vanderbilt Law School Faculty Publications

No force has put more pressure on the legal system than is likely to be exerted as climate change begins to disrupt the settled expectations of humans. Demands on the legal system will be intense and long-term, but is the law up to the task? If it is, it will at least in part be because the legal system proves to be resilient and adaptive. The question this Article explores, therefore, is how to think about designing legal instruments and institutions now with confidence they will be resilient and adaptive to looming problems as massive, variable, and long-term in scale …

Social Indicators For Arctic Mining, Sharman Haley, Nick Szymoniak, Matthew Klick, Andrew Crow, Tobias Schwoerer

ISER Reports

This paper reviews and assesses the state of the data to describe and monitor mining trends in the pan-Arctic. It constructs a mining index and discusses its value as a social impact indicator and discusses drivers of change in Arctic mining. The widely available measures of mineral production and value are poor proxies for economic effects on Arctic communities. Trends in mining activity can be characterized as stasis or decline in mature regions of the Arctic, with strong growth in the frontier regions. World prices and the availability of large, undiscovered and untapped resources with favorable access and low political …

The Fate Of Alpine Species In The Face Of Climate Change: A Biogeographic Perspective, Madaline Cochrane

Macalester Reviews in Biogeography

Will global climate change affect the spatial distribution and abundance of biodiversity along mountains equally? The elevational gradients inherent as one moves up a mountain slope help define the many biological patterns that emerge as key indicators for species richness in an era of rising global temperatures. When global temperatures arise, the microclimates found along different elevational ranges on mountains also fluctuate. As abiotic characteristics such as daily air temperature, daily precipitation, and annual snowmelt change overtime, so will the biotic communities on a mountain. Some species may be able to adapt to their new environments, while other may have …

The Effects Of Elevated Carbon Dioxide Concentrations On The Early Life History Of Bivalve Shellfish, Stephanie Carol Talmage

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The combustion of fossil fuels has increased CO2 in the world's oceans and decreased pH. Ocean acidification may alter the growth, survival, and diversity of marine organisms that synthesize shells due to decreased carbonate ion availability. I examined the response of larvae and early juveniles from three species of commercially and ecologically valuable bivalve shellfish (Mercenaria mercenaria, Argopecten irradians, and Crassostrea virginica) exposed to past, pre-industrial levels (~250 ppm), present (~390 ppm), and future (~750, 1500 ppm) levels of CO2. Under higher CO2 concentrations, all three species experienced decreased growth, survival, and metamorphosis with C. virginica being the least affected. …

The Effects Of Climate Change On Public Health And The Healthcare Provider's Role In Addressing Climate Change, Allyson J. Pfeiffer

Senior Honors Projects

“Climate change is a term that refers to major changes in temperature, rainfall, snow, or wind patterns lasting for decades or longer.  Both human-made and natural factors contribute to climate change” (EPA, p. 1, 2011).  Some examples of human-made causes of global warming include burning fossil fuels (e.g., petroleum, coal, diesel), cutting down forests, and developing land for farms, cities, and roads, because these activities all release green house gases into the atmosphere.  Green house gases are gases that trap heat in the atmosphere.  There are some greenhouse gases such as carbon dioxide that occur naturally and are emitted into …

The History And Future Of Genetically Modified Crops: Frankenfoods, Superweeds, And The Developing World, Brooke Glass-O'Shea

Journal of Food Law & Policy

In a 1992 letter to the New York Times, a man named Paul Lewis referred to genetically modified (GM) crops as "Frankenfood," and wryly suggested it might be "time to gather the villagers, light some torches and head to the castle." Little did Lewis know that his neologism would become the rallying cry for activists around the world protesting the dangers of genetic engineering. The environmental activist group Greenpeace made great use of the "Frankenfood" epithet in their anti-GM campaigns of the 1990s, though they have since backed away from the word and the hardline stance it represents. But genetically …

Modeling Plant Ranges Over 75 Years Of Climate Change In California, Usa: Temporal Transferability And Species Traits, Solomon Z. Dobrowski, James H. Thorne, Johnathan A. Greenberg, Hugh D. Safford, Alison R. Mynsberge, Shawn M. Crimmins, Alan K. Swanson

Forest Management Faculty Publications

Species distribution model (SDM) projections under future climate scenarios are increasingly being used to inform resource management and conservation strategies. A critical assumption for projecting climate change responses is that SDMs are transferable through time, an assumption that is largely untested because investigators often lack temporally independent data for assessing transferability. Further, understanding how the ecology of species influences temporal transferability is critical yet almost wholly lacking. This raises two questions. (1) Are SDM projections transferable in time? (2) Does temporal transferability relate to species ecological traits? To address these questions we developed SDMs for 133 vascular plant species using …

Climate Change And Community Dynamics: A Hierarchical Bayesian Model Of Resource-Driven Changes In A Desert Rodent Community, Glenda M. Yenni

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

Predicting effects of climate change on species persistence often assumes that those species are responding to abiotic effects alone. However, biotic interactions between community members may affect species’ ability to respond to abiotic changes. Latent Gaussian models of resource availability using precipitation and NDVI and accounting for spatial autocorrelation and rodent group-level uncertainty in the process are developed to detect differences in seasons, groups, and the experimental removal of one group. Precipitation and NDVI have overall positive effects on rodent energy use as expected, but meaningful differences were detected. Differences in the importance of seasonality when the dominant group was …

‘Climate Change’ And Its Bearing On Violent Crimes In A Rio Grande Valley City In Texas, Vanessa Valdez

Theses and Dissertations - UTB/UTPA

Previous theories have attributed aggression to biological influences but this thesis will focus on the frustration-aggression hypothesis. If such a theory is relevant, weather may have an effect on violent crime. This study intends to answer whether a relationship between violence (specifically violent crime) and warm temperatures exists and what type of relationship exists. The study tests the hypothesis that warm temperatures will have a positive association with violent crime. Based on secondary data the Part I Index crimes (Violent) or murder rape, robbery, and aggravated assault were collapsed into two variables, ‘Violent’ which omitted robbery and ‘Violent 2’ which …

Timing Of Seasonal Migration In Mule Deer: Effects Of Climate, Plant Phenology, Andlife-History Characteristics, Kevin L. Monteith, Vernon C. Bleich, Thomas R. Stephenson, Becky M. Pierce, Mary M. Conner, Robert W. Klaver, R. Terry Bowyer

Wildland Resources Faculty Publications

Phenological events of plants and animals are sensitive to climatic processes. Migration is a life-history event exhibited by most large herbivores living in seasonal environments, and is thought to occur in response to dynamics of forage and weather. Decisions regarding when to migrate, however, may be affected by differences in life-history characteristics of individuals. Long-term and intensive study of a population of mule deer (Odocoileus hemionus) in the Sierra Nevada, California, USA, allowed us to document patterns of migration during 11 years that encompassed a wide array of environmental conditions. We used two new techniques to properly account for interval-censored …

Super-Aggregations Of Krill And Humpback Whales In Wilhelmina Bay, Antarctic Peninsula, Douglas P. Nowacek, Ari S. Friedlaender, Patrick N. Halpin, Elliott L. Hazen, David W. Johnston, Andrew J. Read, Boris Espinasse, Meng Zhou, Yiwu Zhu

Environmental, Earth, and Ocean Sciences Faculty Publication Series

Ecological relationships of krill and whales have not been explored in the Western Antarctic Peninsula (WAP), and have only rarely been studied elsewhere in the Southern Ocean. In the austral autumn we observed an extremely high density (5.1 whales per km²) of humpback whales (Megaptera novaeangliae) feeding on a super-aggregation of Antarctic krill (Euphausia superba) in Wilhelmina Bay. The krill biomass was approximately 2 million tons, distributed over an area of 100 km² at densities of up to 2000 individuals m⁻³; reports of such ‘super-aggregations’ of krill have been absent in …

Effects Of Glacial Discharge On Kelp Bed Organisms In An Alaskan Subarctic Estuary, Tania Marie Sparkland

Marine Biology

Global climate warming is having large-scale, pronounced effects on the physical environment of Arctic and subarctic nearshore marine ecosystems, such as the widespread melting of glaciers. The purpose of this study was to determine how changing environmental conditions due to glacial melting affect subarctic kelp bed community structure and organism fitness. This study compared kelp bed community structure under disparate environmental conditions on a glacially-influenced and an oceanic shore in the same subarctic Alaskan estuary. Laboratory tests assessed the effects of varying salinity and irradiance on growth and physiological competence (as maximum quantum yield ( Fv/Fm)) of the dominant kelp, …