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Potential Direct And Indirect Effects Of Climate Change On A Shallow Natural Lake Fish Assemblage, Jason J. Breeggemann, Mark A. Kaemingk, Timothy J. Debates, Craig P. Paukert, Jacob R. Krause, Alexander P. Letvin, Tanner M. Stevens, David W. Willis, Steven R. Chipps

School of Natural Resources: Faculty Publications

Much uncertainty exists around how fish communities in shallow lakes will respond to climate change. In this study, we modelled the effects of increased water temperatures on consumption and growth rates of two piscivores (northern pike [Esox lucius] and largemouth bass [Micropterus salmoides]) and examined relative effects of consumption by these predators on two prey species (bluegill [Lepomis macrochirus] and yellow perch [Perca flavescens]). Bioenergetics models were used to simulate the effects of climate change on growth and food consumption using predicted 2040 and 2060 temperatures in a shallow Nebraska Sandhill lake, …

Estimating Carbon Storage In Windbreak Trees On U.S. Agricultural Lands, W. B. Possu, James R. Brandle, G. M. Domke, M. Schoeneberger, Erin E. Blankenship

School of Natural Resources: Faculty Publications

Assessing carbon (C) capture and storage potential by the agroforestry practice of windbreaks has been limited. This is due, in part, to a lack of suitable data and associated models for estimating tree biomass and C for species growing under more opengrown conditions such as windbreaks in the Central Plains region of the United States (U.S.). We evaluated 15 allometric models using destructively sampled Pinus ponderosa (Lawson & C. Lawson) data from field windbreaks in Nebraska and Montana. Several goodness-of-fit metrics were used to select the optimal model. The Jenkins’ et al. model was then used to estimate biomass for …

Pine Trees May Shed Light On Global Warming, Nicole Nelson

The Scope

VCU graduate student Constance Bolte has been conducting research at “the intersection of ecology and evolution,” focusing on three species of pine trees: the loblolly, the pitch pine and the table mountain pine. Using temperature and precipitation data, Bolte has been forecasting and “hindcasting” the species’ distribution across North America.

Teaching Climate Change Concepts And The Nature Of Science: A Library Activity To Identify Sources Of Climate Change Misconceptions, Charity Flener Lovitt, Kristen S. Shuyler

Libraries

A library activity was developed in which students found information about climate science misconceptions from popular and scientific literatures. As part of the activity, students developed a rubric to evaluate the credibility and type of literature sources they found. The activity prepared students to produce an annotated bibliography of articles, which they then used to create a training document about a climate science misconception for staff at a local science center. Evaluation of annotated bibliographies showed that students were able to distinguish between popular and scholarly literature but struggled to identify primary and secondary sources within the scholarly literature. In …

Altitudinal Shifts Of The Native And Introduced Flora Of California In The Context Of 20th-Century Warming, A. Wolf, Naupaka B. Zimmerman, W. R. Anderegg, P. E. Busby, J. Christensen

Biology Faculty Publications

Aim: The differential responses of plant species to climate change are of great interest and grave concern for scientists and conservationists. One underexploited resource for better understanding these changes are the records held by herbaria. Using these records to assess the responses of different groups of species across the entire flora of California, we sought to quantify the magnitude of species elevational shifts, to measure differences in shifts among functional groups and between native and introduced species, and to evaluate whether these shifts were related to the conservation of thermal niches.

Location: California.

Methods: To characterize these shifts in California, …

The Biodiversity Paradigm Shift: Adapting The Endangered Species Act To Climate Change, Kalyani Robbins

Faculty Publications

The Endangered Species Act (ESA) was designed to protect species that had been rendered more vulnerable to extinction as a result of human activity. As such, its implementation has traditionally focused on keeping human beings away from such species and giving the species (and their ecosystems) space to heal on their own. Climate change is altering the landscape everywhere on the globe, rendering the hands-off approach no longer sufficient. Active interventions will become more necessary as we get further into the changing climate. Taking decisive action in response to climate change will also require a fundamental shift in our approach …

Insights From Wildfire Science: A Resource For Fire Policy Discussions, Tania Schoennagel, Penny Morgan, Jennifer Balch, Philip Dennison, Brian Harvey, Richard L. Hutto, Meg Krawchuk, Max A. Moritz, Ray Rasker, Cathy Whitlock

Biological Sciences Faculty Publications

Record blazes swept across parts of the US in 2015, burning more than 10 million acres. The four biggest fire seasons since 1960 have all occurred in the last 10 years, leading to fears of a ‘new normal’ for wildfire. Fire fighters and forest managers are overwhelmed, and it is clear that the policy and management approaches of the past will not suffice under this new era of western wildfires. In recent decades, state and federal policymakers, tribes, and others are confronting longer fire seasons (Jolly et al. 2015), more large fires (Dennison et al. 2014), a tripling of homes …

Riparian Trees And Aridland Streams Of The Southwestern United States: An Assessment Of The Past, Present, And Future, D. Max Smith, Deborah M. Finch

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Riparian ecosystems are vital components of aridlands within the southwestern United States. Historically, surface flows influenced population dynamics of native riparian trees. Many southwestern streams has been altered by regulation, however, and will be further affected by greenhouse warming. Our analysis of stream gage data revealed that decreases in volume of annual discharge and mean peak discharge and a shift to earlier peak discharge will occur in the Southern Rockies region of Colorado, New Mexico, and Utah. These changes will likely decrease rates of reproduction and survival of cottonwood (Populus fremontii and Populus deltoides ssp. wislizenii), Goodding's willow …

Invasion During Extreme Weather: Success And Failure In A Temperate Perennial Grassland, James C. Han, Stephen L. Young

West Central Research and Extension Center, North Platte

Invasive and native plant species compete for resources in similar pools, with disturbances often favoring the invader. Yet, increased climate variability may be shifting the competitive edge back toward the natives. We conducted field studies in perennial grasslands to determine the effects of clipping and drought on resource availability (light and moisture) and subsequent establishment of Carduus nutans. We measured light penetration and soil moisture content in C. nutans monoculture, clipped and non clipped grassland with C. nutans, and bare ground control plots. We also tracked phenology of the invader and grasses. Our studies revealed that light was a limiting …

On Climate Change And Cyber Attacks: Leveraging Polycentric Governance To Mitigate Global Collective Action Problems, Scott J. Shackelford

Vanderbilt Journal of Entertainment & Technology Law

Although cyberspace and the atmosphere are distinct arenas, they share similar problems of overuse, difficulties of enforcement, and challenges of collective inaction and free riders. With weather patterns changing, global sea levels rising, and temperatures set to exceed 1.5 degrees Celsius by 2100, climate change is a problem that affects the entire world. Yet its benefits are dispersed, and its harms are often concentrated. Similarly, much of the cost of cyber attacks is focused in a few nations even as others are becoming havens for cybercriminals. Yet it is also true that actions taken by a multiplicity of actors on …

Using Cleaved Amplified Polymorphic Sequence (Caps) Genetic Markers To Determine The Extent Of Hybridization Between Castilleja Affinis And Castilleja Mollis As A Mechanism For Adapting To Climate Change On Santa Rosa Island, Elizabeth Medford

Scripps Senior Theses

Hybridization, the process of interbreeding between individuals of different species, is one method by which plants and animals adapt to a changing environment. One example of such adaptation through hybridization may be occurring on the California Channel Islands with two species of Castilleja. While United State Geological Survey (USGS) researchers have been studying the populations of Castilleja affinis and Castilleja mollis to determine if hybridization is occurring on Santa Rosa Island since the early 1990s, up until this point primarily overt phenotypic characteristics have been used to differentiate between the two species. Genetic methods of differentiation were adopted to …

Enhancing The Urban Environment Through Green Infrastructure, John R. Nolon

Elisabeth Haub School of Law Faculty Publications

This Article is adapted from Chapter Seven of John R. Nolon, Protecting the Environment Through Land Use Law: Standing Ground, published by ELI Press. The book describes how localities are responding to new challenges, including the imperative that they adapt to and help mitigate climate change and create sustainable neighborhoods. This Article follows the steady advance in the use of green infrastructure in recent years, and details its value as a strategy for adapting to climate change, bettering air quality, lowering heat stress, creating greater biodiversity, conserving energy, providing ecological services, sequestering carbon, preserving and expanding habitats, enhancing aesthetics, increasing …

Climate Change And The Confluence Of Natural And Human History: A Lawyer’S Perspective, Josh Eagle

Faculty Publications

No abstract provided.

Enhancing Conservation Options: An Argument For Statutory Recognition Of Options To Purchase Conservation Easements (Opces), Federico Cheever, Jessica Owley

Articles

Land conservation transactions have been the most active component of the conservation movement in the United States for the past three decades. Conservation organizations have acquired property rights-mostly conservation easements-to protect roughly 40 million acres of land nationwide. However, climate change threatens this vast edifice. Climate change means that the resources that land conservation transactions were intended to protect may not persist on the land protected. Options to purchase conservation easements ("OPCEs") have long played a modest but important role in conservation law practice. In the world climate change is creating, with its substantial uncertainties and shifting windows of opportunity, …

Traditional Ecological Rulemaking, Anthony Moffa

Faculty Publications

This Article examines the implications of an increased role for Traditional Ecological Knowledge (TEK) in United States agency decisionmaking. Specifically, it contemplates where TEK might substantively and procedurally fit and, most importantly, whether a final agency action based on TEK would survive judicial scrutiny. In the midst of a growing body of scholarship questioning the wisdom of deference to agency expertise9 and the legitimacy of the administrative state writ large,10 this Article argues that there remains an important space in administrative rulemaking for the consideration of ways of understanding that differ from traditional Western norms. TEK can and should fill …

Simulating Long-Term Impacts Of Cover Crops And Climate Change On Crop Production And Environmental Outcomes In The Midwestern United States, Andrea D. Basche, Sotririos V. Archontoulis, Thomas C. Kaspar, Dan B. Jaynes, Timothy B. Parkin, Fernando E. Miguez

Department of Agronomy and Horticulture: Faculty Publications

It is critical to evaluate conservation practices that protect soil and water resources from climate change in the Midwestern United States, a region that produces one-quarter of the world’s soybeans and one-third of the world’s maize. An over-winter cover crop in a maize–soybean rotation offers multiple potential benefits that can reduce the impacts of higher temperatures and more variable rainfall; some of the anticipated changes for the Midwest. In this experiment we used the Agricultural Production Systems sIMulator (APSIM) to understand how winter rye cover crops impact crop production and environmental outcomes, given future climate change. We first tested APSIM …

Pre-Service Teachers And Climate Change: A Stalemate?, Helen J. Boon

Australian Journal of Teacher Education

Findings from the second phase of a study of pre-service teachers’ attitudes to environmental education and knowledge of climate change are reported in this paper. A sample of 87 pre-service teachers participated in a survey study in the last year of their Bachelor of Education degree to examine developments to their attitudes to environmental education and their knowledge of climate change as a result of training. Results showed their attitudes towards environmental education were consistently favourable, but their climate change science knowledge had not changed as a result of their participation in their degree. Data on preservice teachers’ sources of …

Forgetting Nature: The Importance Of Including Environmental Flows In International Water Agreements, Amy Hardberger

Faculty Articles

From the moment States created political boundaries to define their territory, they have shared water. There are 263 transboundary lake and river basins worldwide and 300 known transboundary aquifer systems. Whenever sharing is present, the opportunity for conflict is too. Climate change and increasing population are only two factors that may lead to increasing conflict if attention is not given to these situations. Thankfully, sharing water also creates an opportunity for cooperation. Throughout the world, there are increasing examples of conflict and cooperation regarding shared water resources. International water agreements can promote regional peace and security and encourage economic growth. …

Fish Ladders Designed For Drop Culverts And Central Stoneroller Ecology Across A Latitudinal Gradient, John Arthur Lorenzen

Electronic Theses and Dissertations

Stream connectivity is essential for the persistence of fish populations and maintenance of fish assemblage structure. Stream-road crossings can become barriers resulting in a loss of connectivity. Creating innovative tools for fisheries managers to allow fish passage through barrier stream-road crossings is important worldwide as climate change may force range shifts to stay within thermal requirements. Understanding how populations and metapopulations respond to climate is important as fisheries managers can use this information to make informed management decisions in regards to climate change and possible range shifts. Thus, we developed and tested a fish ladder to retrofit barrier stream-road crossings …

Body Size Distributions Signal A Regime Shift In A Lake Ecosystem, Trisha L. Spanbauer, Craig R. Allen, David G. Angeler, Tarsha Eason, Sherilyn C. Fritz, Ahjond S. Garmestani, Kirsty L. Nash, Jeffery R. Stone, Craig A. Stow, Shana M. Sundstrom

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Communities of organisms, from mammals to microorganisms, have discontinuous distributions of body size. This pattern of size structuring is a conservative trait of community organization and is a product of processes that occur at multiple spatial and temporal scales. In this study, we assessed whether body size patterns serve as an indicator of a threshold between alternative regimes. Over the past 7000 years, the biological communities of Foy Lake (Montana, USA) have undergone a major regime shift owing to climate change. We used a palaeoecological record of diatom communities to estimate diatom sizes, and then analysed the discontinuous distribution of …

A Review Of Fall Sandhill Crane Migration Through Indiana, Allisyn-Marie T. Y. Gillet

Proceedings of the North American Crane Workshop

The Indiana Division of Fish and Wildlife conducts surveys from October to December to collect long-term data on greater sandhill cranes (Grus canadensis tabida). Results from these censuses contribute to a fall index of the Eastern Population, which informs wildlife management decisions and research priorities. Recent findings from the annual U. S. Fish and Wildlife Service Fall Sandhill Crane Migration Survey demonstrate a decline in the number of cranes observed at fall staging areas throughout Indiana since 1979. However, nationwide data exhibit a trend of population increase. I provide evidence to show that the apparent decline in the …

Climate Change On The Therapist's Couch : How Mental Health Clinicians Receive And Respond To Indirect Psychological Impacts Of Climate Change In The Therapeutic Setting, Elizabeth B. Seaman

Theses, Dissertations, and Projects

The scientific community has reached near consensus that climate change (also known as anthropogenic global warming) poses a significant and potentially dire threat to the ecosystems upon which we, as humans and as a society, rest. While climate change is most often discussed in terms of its effect on the natural environmental, its psychological impacts are also expected to be immense and varied and include indirect distress related to the threat that climate change poses. The purpose of this study was to explore how this kind of indirect distress gets talked about in the therapeutic setting. Using a mixed methods …

Understanding The Structure And Functioning Of Polar Pelagic Ecosystems To Predict The Impacts Of Change, E. E. Murphy, R. D. Cavanagh, K. F. Drinkwater, S. M. Grant, J. J. Heymans, E. E. Hofmann, G. L. Hunt Jr., N. M. Johnston

CCPO Publications

The determinants of the structure, functioning and resilience of pelagic ecosystems across most of the polar regions are not well known. Improved understanding is essential for assessing the value of biodiversity and predicting the effects of change (including in biodiversity) on these ecosystems and the services they maintain. Here we focus on the trophic interactions that underpin ecosystem structure, developing comparative analyses of how polar pelagic food webs vary in relation to the environment. We highlight that there is not a singular, generic Arctic or Antarctic pelagic food web, and, although there are characteristic pathways of energy flow dominated by …

Synergistic Effects Of Climate Change And Grazing On Net Primary Production Of Mongolian Grasslands, Shree R. S. Dangal, Hanqin Tian, Chaoqun Lu, Shufen Pan, Neil Pederson, Amy Hessl

Faculty & Staff Scholarship

In arid and semi-arid regions, grassland degradation has become a major environmental and economic problem, but little information is available on the response of grassland productivity to both climate change and grazing intensity. By developing a grazing module in a process-based ecosystem model, the dynamic land ecosystem model (DLEM), we explore the roles of climate change, elevated CO2, and varying grazing intensities in affecting aboveground net primary productivity (ANPP) across different grassland sites in Mongolia. Our results show that both growing season precipitation totals and average temperature exert important controls on annual ANPP across six sites over a precipitation gradient, …

Sensitivity Of Maize Yield Potential To Regional Climate In The Southwestern U.S., Seung Hee Kim, Boksoon Myoung, David Stack, Jinwon Kim, Menas Kafatos

Mathematics, Physics, and Computer Science Faculty Articles and Research

The sensitivity of maize yields to the regional climate in the Southwestern U.S. (SWUS) has been investigated by using the Agricultural Production Systems sIMulator (APSIM) model in conjunction with meteorological forcings [daily maximum and minimum temperature (Tmax and Tmin), precipitation, and radiation] from the North American Regional Reanalysis (NARR) dataset. Sensitivity experiments showed that potential crop production responded nonlinearly to variations in Tmax, Tmin, and downwelling solar radiation at the surface. Mean annual yield potential (Yp) was changed by -3.0 and 1.79 Mg ha-1 for the +1 and -1 standard deviations (σ) of Tmax variation for entire the SWUS. The …

Short-Term Changes Of Leaf Area Index, Light Transmission, And Gap In A Temperate Mixed Deciduous Forest Ecosystem In Bartın, Turkey, İlyas Bolat, Ömer Kara, Meli̇h Öztürk

Turkish Journal of Agriculture and Forestry

In this study, leaf area index (LAI), light transmission, and gap were estimated by using the hemispherical photograph analysis technique with Hemisfer software version 1.5.3 for a temperate mixed deciduous forest. The height of the overall vegetation in the stand ranged from 15 to 20 m, and the diameters of the trees in the stand at breast height varied between 14 and 28 cm. This study showed that the mean value of LAI increased by 4% in the 5-year period from 2007 to 2012. LAI was significantly (P < 0.05) greater in 2012 than in 2007, whereas the mean percentage of light transmission was significantly lower in 2012 than it was in 2007. In addition, there was a significant (P < 0.01) correlation between LAI and light transmission, and there was also a statistically significant correlation between the gap and light transmission (P < 0.05). According to long-term meteorological data (1982-2012), this study also demonstrated that the mean air temperature rose approximately 1.0 °C between 2007 and 2012. Consequently, this study indicated that LAI varies with respect to time and the increase of LAI leads to a decrease in light transmission. Additionally, the air temperature and precipitation have a significant influence on the LAI.

Marine Infectious Disease Dynamics And Outbreak Thresholds: Contact Transmission, Pandemic Infection, And The Potential Role Of Filter Feeders, Gorka Bidegain, Eric N. Powell, John M. Klinck, Tal Ben-Horin, Eileen E. Hofmann

CCPO Publications

Disease-causing organisms can have significant impacts on marine species and communities. However, the dynamics that underlie the emergence of disease outbreaks in marine ecosystems still lack the equivalent level of description, conceptual understanding, and modeling context routinely present in the terrestrial systems. Here, we propose a theoretical basis for modeling the transmission of marine infectious diseases (MIDs) developed from simple models of the spread of infectious disease. The models represent the dynamics of a variety of host-pathogen systems including those unique to marine systems where transmission of disease is by contact with waterborne pathogens both directly and through filter-feeding processes. …

Ocean Iron Fertilization And Indigenous Peoples' Right To Food: Leveraging International And Domestic Law Protections To Enhance Access To Salmon In The Pacific Northwest, Randall S. Abate

Journal Publications

Ocean iron fertilization (OIF) is a new and controversial climate change mitigation strategy that seeks to increase the carbon-absorbing capacity of ocean waters by depositing significant quantities of iron dust into the marine environment to stimulate the growth of phytoplankton blooms. The photosynthetic processes of these blooms absorb carbon from the atmosphere and sequester it to the ocean floor. OIF has been criticized on several grounds. including the foreseeable and unforeseeable adverse consequences it may cause to the marine environment, as well as the daunting challenge of reconciling several potentially overlapping sources of international and domestic environmental law, which may …

Fossil Fuel Abolition: Legal And Social Issues, Karl S. Coplan

Elisabeth Haub School of Law Faculty Publications

This Article will examine the practical, ethical, legal, and socio-political implications of fossil fuel abolition. First, the Article will consider the practical, ethical, and legal arguments in favor of fossil fuel abolition. Then, the Article will examine possible legal means and authorities to implement abolition in the United States, as well as potential legal objections to fossil fuel abolition. Finally, the Article will consider legal abolition’s capacity to effect the far-reaching changes in our socioeconomic system that a ban on fossil fuels will entail. The Article also will compare the climate reform movement to other social law reform movements in …

Impacts Of Environmental Changes To The Middle Rio Grande Landscape On Ysleta Del Sur Pueblo's Cultural And Cermonial Sustainability, Andrea L. Everett

Open Access Theses & Dissertations

Given future climate scenarios, this Thesis investigates how plausible climate changes will further impact the Native American community of Ysleta del Sur Pueblo's (Tiguas) cultural continuity and access to riparian ecosystem services along the Rio Grande River (specific to Tigua tradition; riparian vegetation used in ceremony, i.e. Gooding's and Coyote willow). The project aims to (1) describe and understand the relationship between regional climatic changes, anthropogenic changes, and major events in Tigua history, (2) identify rates and patterns of riparian vegetation changes, (3) evaluate impacts on cultural and provisioning ecosystem services relevant to Tigua culture, and relate these to climate …