Life Sciences Commons^™

Climate Change Impacts On Atmospheric Ammonia And Implications For Human Health, Casey Olson, Connor Snow, Bridger Jorgensen

Fall Student Research Symposium 2021

According to national data Cache Valley has the highest concentrations of atmospheric ammonia in the nation. This study aims to answer the questions of whether climate variables and events such as precipitation, averaged winds, geopotential height, and teleconnections can be used to predict the behavior of pollutants and how human biology is potentially affected. Data from the Utah Climate Center shows that the 3rd yearly quartile has the highest levels of airborne ammonia due to the high levels of fertilizer use and livestock emissions in the farming industry in Cache Valley. After data analysis, there seems to be a connection …

Understanding How Changes In Precipitation Intensity Will Affect Vegetation In The Western U.S., Cristina Chirvasa

Fall Student Research Symposium 2021

Precipitation events are becoming more intense as the atmosphere warms, but it remains unclear how precipitation intensification will affect plant growth in arid and semiarid ecosystems. There is conflicting evidence suggesting that larger precipitation events may either increase or decrease plant growth. Here, we report the growth responses of herbaceous and woody plants to experimental manipulations of precipitation intensity in a cold, semi-arid ecosystem in Utah, USA. In this experiment, precipitation was collected and redeposited as fewer, larger events with total annual precipitation kept constant across treatments. Results from the first two growing seasons revealed that more intense events ‘pushed’ …

Digitization Of Entomological Collections At Usu, Eastern Using Scan (Symbiota Collections Of Arthropods Network) Data Portal And Seek! Inaturalist App, Alexandra Cartwright

Fall Student Research Symposium 2021

Pollinators, including bees, provide valuable ecosystem services for native plants and agricultural species. Phenology, or the timing of biological events such as flowering of plants, is changing as a result of climate change. The digitization of specimens allows for insights into species distributions, seasonality, and phenology in 60-70-year-old collections. The entomological collection at Utah State University, Eastern houses approximately 3,000 individual specimens and over 100 bees. The oldest specimens date from 1953, many from the 1960s, 70s, & 80s and the majority of specimens are from Carbon and Emery Counties. Digitization of entomological collections can provide: species distributions: Which species …

Log Proximity And Moss As Indicators Of Conifer Seedling Abundance In Old-Growth Douglas-Fir/ Hemlock Forests, Isabella Wetzler

Fall Student Research Symposium 2021

It is increasingly essential to develop a comprehensive understanding of forest processes so that we may better conserve and maintain our old-growth forests in the face of climate change. In the Pacific Northwest, logs might elevate and remove conifer seedlings from light competition with moss and herbs, but seedlings growing on the forest floor may benefit from log shade. Moss can retain moisture which may result in higher water availability for seedlings, but in droughty conditions the desiccated moss might leave seedlings ‘high and dry’. Logs increase mircrosite heterogeneity, providing cool, moist microclimates for seedlings and protecting them from droughty …

Understanding The Effects Of Climate Change Via Disturbance On Pristine Arctic Lakes—Multitrophic Level Response And Recovery To A 12-Yr, Low-Level Fertilization Experiment, Phaedra Budy, Casey A. Pennock, Anne E. Giblin, Chris Luecke, Daniel L. White, George W. Kling

Watershed Sciences Student Research

Effects of climate change-driven disturbance on lake ecosystems can be subtle; indirect effects include increased nutrient loading that could impact ecosystem function. We designed a low-level fertilization experiment to mimic persistent, climate change-driven disturbances (deeper thaw, greater weathering, or thermokarst failure) delivering nutrients to arctic lakes. We measured responses of pelagic trophic levels over 12 yr in a fertilized deep lake with fish and a shallow fishless lake, compared to paired reference lakes, and monitored recovery for 6 yr. Relative to prefertilization in the deep lake, we observed a maximum pelagic response in chl a (+201%), dissolved oxygen (DO, −43%), …

Understanding Climate Change Impacts And Adaptation Potentials At Utah Ski Resorts, Rachel Hager

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

Increasing temperature and shifting precipitation regimes due to climate change are a significant threat to winter recreation. Some businesses such as high-elevation ski resorts are especially vulnerable to the impacts of climate change. However, ski resorts may be able mitigate the impacts of climate change by proactively implementing adaptation strategies. The overall goal of this study was to investigate the impact of climate change on Utah ski resorts, and to understand adaptation perception, barriers, and strategies for different resorts across the state.

To meet that goal, we used a mixed-methods approach including examining temperature shifts at all Utah ski resorts …

Susceptibility Of High-Elevation Forests To Mountain Pine Beetle (Dendroctonus Ponderosae Hopkins) Under Climate Change, David N. Soderberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Across western North America, pine forests are important for timber, wildlife habitat, and at high elevations are important for water retention and yield from rain and snowmelt. The mountain pine beetle (MPB) is one of the most significant disturbance agents shaping pine forests, and like all insects, temperature is a major driver of its population success and the dynamics of the landscapes that they inhabit. Changing temperature regimes can therefore directly influence MPB population persistence at a particular location, in addition to potential shifts in the range boundaries that they inhabit. MPB is currently expanding its range northward in British …

Climate Change's Destabilizing Impacts On Nigerian Economy Leaves Room For Boko Haram Expansion, Ellie Willard

Student Research Symposium

The impacts of climate change in Nigeria are extending beyond changes in the weather, leading to huge changes in the lives of individual Nigerians, the Nigerian Government and Boko Haram, a terrorist organization. The reduction of the agricultural industry and the oil industry are going to create a welcoming environment for Boko Haram to grow. Unless changes are made to the Nigerian economic sector, the immediate impacts of climate change is likely to increase Boko Haram recruits. Presentation Time: Thursday, 11 a.m.-12 p.m.Zoom link: https://usu-edu.zoom.us/j/84125172996?pwd=aDlRb3dhU3AyUzR2eXNMRytZWmF3dz09

Human-Accelerated Biodiversity Loss During Climate Change Threatens Human Health & Food Security, Miles Robertson

Student Research Symposium

Humans have been the single most impactful species to the biosphere for the past few thousand years. Usually, consequences of human-caused ecological changes come about on a time scale larger than our normal cause-and-effect perception allows. However, with the onset of climate change, the effects of human-accelerated biodiversity loss are set to expose vulnerabilities in human health and food security. My research explores three arenas in which climate change is set to exacerbate the effects of biodiversity loss: zoonotic disease, US corn crops, and the Chinese fishing industry. Presentation Time: Wednesday, 1-2 p.m. Zoom link: https://usu-edu.zoom.us/j/87892002075?pwd=Ym1Tcy9NOVhaaGZWczZWY1JCL3owUT09

Space Solar Power Mitigates Climate Change, Tests Global Energy Markets And Space Policies, Sierra Kline

Student Research Symposium

The harnessing of space solar power (SSP) has dynamic and disruptive potential in three connected threat categories: energy security (both from insecure sources and from depleting resources,) climate change, and the erosion of US space dominance and related reduction in international space security. GHG levels require a drastic shift from fossil fuels to renewables, yet current renewable systems (hydro, wind, solar,) are not capable of supporting the projected increases in energy needs going into the mid 21st century. SSP would provide a solution to the lack of stable energy sources that are proving disastrous in many parts of the world …

Functional Complementation Of The Ppgcn4 And Ppnhx2 Genes In Arabidopsis Thaliana To Study Salt Tolerance, Amanda Moravek

Student Research Symposium

Climate change induces unexpected weather and causes abiotic and biotic stresses in plants. These stresses negatively affect crop growth and production. Additionally, a steady increase in the world population has been leading to higher food demand. Therefore, the development of more stress-resilient crops is essential to combat these problems. One such stress is a salinity that affects crop production. Almond is a salt-sensitive crop, so there is a need to identify salt-tolerant almond rootstocks. AtGCN4 is a novel gene that was identified in Arabidopsis thaliana to play a significant role in host-pathogen interaction and drought tolerance when overexpressed. The preliminary …

Microbial Community Of The Rhizosphere Of Ceanothus Velutinus Improves The Plant's Growth And Development Under Greenhouse Conditions, Jyothsna Ganesh

Student Research Symposium

Climatic change-induced environmental stresses affect crop production. Drought is such a stress which affect crop production and landscaping adversely. Native plants are great for low water use landscaping and can adapt to the natural environment. USU Center for Water-Efficient Landscaping has released a list of native plants that can be used for this purpose. This study focuses on a native plant Ceanothus velutinus (snowbrush) which is an evergreen plant native to western North America. It thrives well in harsh conditions and can act as ornamental plant in low water use landscaping but is difficult to propagate under landscape conditions. Here, …

Isolation & Identification Of Bacteria From The Rhizosphere Of Native Plant, Ceanothus Velutinus, And Their Potential As Biofertilizers, Katherine Webb, Hayden Johns

Student Research Symposium

Due to the ever-changing climate, plants face stressors that limit their growth. Therefore it is vital to find new ways to protect plants from biotic and abiotic stressors such as pathogen infection, drought, heavy metal poisoning, and salinity. With an increasing population, limiting the effects of stress on plant growth and development for agriculture is vital. One approach to this is focusing on beneficial plant-microbe interaction, such as plant growth-promoting rhizobacteria (PGPR). These bacteria are found in the rhizosphere- the soil that is attached to the roots of a plant. Various PGPRs share a symbiotic relationship with plants and help …

Comparative Study Of The Microbiome Of The Native Plant Ceanothus Velutinus (Snowbrush) From Different Locations And Greenhouse Studies, Jyothsna Ganesh

Student Research Symposium

Climatic change is one of the biggest threats to the ecosystem and biodiversity by enhancing environmental stresses. Environmental stresses such as biotic and abiotic stresses affect plant health and reduce crop production. The rhizosphere microbiome of a plant plays a significant role in a plant's defense against various biotic and abiotic stresses. In this study, we are investigating the microbiome diversity of bulk soil, rhizosphere, and endosphere of Ceanothus velutinus, snowbrush. Ceanothus is an evergreen native plant that is usually found in dry areas and thrives well in harsh conditions. The snowbrush samples were collected from different locations 1920m, 1950m, …

Pheonolgy And Climate Change In The Tw Daniel Experimental Forest Meadow, Elise Riley

Student Research Symposium

As the earth’s climate warms many plant species are experiencing phenological stages (the timing of their seasonal life cycle events) earlier than they previously have. Dangers of phenological stages occurring earlier in the year include a greater risk of frost kill and the possibility of the speciation of already small populations, both of which could make species more susceptible to extinction. This research focused on determining if meadow forb species within Utah State University’s TW Daniel Experimental Forest (TWDEF) have experienced earlier phenology -specifically, earlier flowering dates- over the past 52 years. Historical phenological data was obtained from journals kept …

Climate Change's Impacts May Necessitate Innovative Delivery Models In Us Healthcare Systems, Max Mauldin

Student Research Symposium

Medicaid is a federal programs within the US whose goal is to provide healthcare to vulnerable populations such as low-income adults, children, pregnant women, older adults and persons with disabilities. These groups are also some of the same groups found to be most at risk for vulnerability to and exposure to effects of climate change, such as “heat waves, extreme weather events, poor air quality, food safety, infectious diseases, and psychological stressors that can arise from these experiences. As climate change and its effects continue to worsen financial strain will be place on states’ Medicaid programs because of the exacerbating …

Loved By People And The Environment: The Future Of Green Building Design, Marley Jackson

Student Research Symposium

CO2 levels have been rising exponentially for the last several years accounting for the increase in global warming and causing major climate changes across the world. When analyzing how to remove extra carbon from being emitted into the atmosphere, we often think of transportation in finding alternative fuel sources, but what about the spaces we spend almost 90 percent of our time in? Buildings account for 39 percent of CO2 released in the United States, which is more than any other sector. The United States has the second highest emission in the world. We have designed buildings without thinking of …

Isolation Of Halotolerant Bacteria From The Rhizosphere Of Ceanothus Velutinus May Lead To Contributions In Plant Health In Saline Conditions, Jacob Davis

Student Research Symposium

As global temperatures have been steadily rising in the past few decades, soil salinity has been steadily increasing in many parts of the world as well. This increase in salinity has proven detrimental and especially challenging for many plant species. The soil directly in contact with the roots of plants is known as the rhizosphere. The rhizosphere hosts plant growth-promoting rhizobacteria (PGPR). PGPR plays a significant role in a plant's ability to deal with stressors such as drought, heavy metal contamination, and extreme cold temperatures. Native plants are known to show versatility to these stressors as well. One such native …

Terminal Lakes And Climate Change: Averting Catastrophe Dependent Upon Intervention Efficacy, Andrew Walker

Student Research Symposium

Terminal Lakes will drastically be affected by climate change. The Caspian Sea, by conservative estimates will drop 30 ft by the end of the century with minimal intervention uncovering an area the size of Portugal, concentrating the current ecological hardship, country conflict, and business contraction. Geoengineering, specifically Solar Radiation Management, poses a significant boon in limiting the damage with an injection of aerosols into the stratosphere to reflect the Carbon Dioxide in the atmosphere to lower temperatures and reduce evaporation. So far, because of limits placed on field testing by the UN, there has been limited testing outside simulation of …

Bolstering Southeast Asia's Livestock Biosecurity And Climate Change Resilience Essential For Global Health, Madelyn Kunzler

Student Research Symposium

A large factor of climate change is its effect on infectious zoonotic diseases. Zoonotic diseases are diseases that can be transferred from animals into humans. Cases of zoonotic diseases have increased as humans have interacted more with animals, and as worldwide travel has become more frequent. It is predicted that 60% of emerging human diseases will be zoonotic. The cases will continue to increase to due climate change. As climate change continues, research has shown that new diseases will emerge from the melting permafrost and ice caps. It is also likely that pre-existing diseases will be able to migrate to …

Historic Declines In Growth Portend Trembling Aspen Death During A Contemporary Leaf Miner Outbreak In Alaska, Melissa A. Boyd, Logan T. Berner, Adrianna C. Foster, Scott J. Goetz, Brendan M. Rogers, Xanthe J. Walker, Michelle C. Mack

Aspen Bibliography

Climate change-driven droughts and insect outbreaks are becoming more frequent and widespread, increasing forest vulnerability to mortality. By addressing the impacts of climate and insects on tree growth preceding death, we can better understand tree mortality risk under a changing climate. Here, we used tree stature and interannual growth (basal area increment; BAI) to assess processes leading to trembling aspen (Populus tremuloides) survival or mortality during an unprecedented leaf miner (Phyllocnistis populiella) outbreak in boreal North America. We identified eight sites (22 plots) in the longest running forest monitoring network in Alaska, spanning ~350 km of …