Earth Sciences
Permanent URI for this communityhttps://scholarworks.montana.edu/handle/1/43
By virtue of our outstanding location in the scenic and rugged mountains of southwest Montana, Earth Science students have many opportunities to participate in field trips that will facilitate the study of earth processes, earth resources, earth history, and environments that people have modified. These field trips are an integral part of many courses, as well as extracurricular activities sponsored by the department. Fieldwork is a very important component of our instructional programs at both the undergraduate and graduate levels.Because of the research conducted by faculty in the department, an undergraduate student may have the opportunity to work on active research projects. In particular, we offer the opportunity to do a "Senior Thesis" to our top students in each senior class. The senior thesis enables a student to work on an actual research project under the supervision of a faculty member, write a research report (a mini-thesis), and present the results at a professional conference. This is excellent preparation for graduate school and/or the workplace. Our Master's theses frequently involve field-testing of state-of-the-art hypotheses proposed elsewhere, as well as formulation of the next generation of hypotheses, which will shape our disciplines in the decades to come. Most Master's thesis work in the Department is published in the peer-reviewed professional literature after presentation at regional or national professional meetings.
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Item The patchwork governance of ecologically available water: A case study in the Upper Missouri Headwaters, Montana, United States(Wiley, 2023-09) Cravens, Amanda E.; Goolsby, Julia B.; Jedd, Theresa; Bathke, Deborah J.; Crausbay, Shelley; Cooper, Ashley E.; Dunham, Jason; Haigh, Tonya; Hall, Kimberly R.; Hayes, Michael J.; McEvoy, Jamie; Nelson, Rebecca L.; Poděbradská, Markéta; Ramirez, Aaron; Wickham, Elliot; Zoanni, DionneInstitutional authority and responsibility for allocating water to ecosystems (“ecologically available water” [EAW]) is spread across local, state, and federal agencies, which operate under a range of statutes, mandates, and planning processes. We use a case study of the Upper Missouri Headwaters Basin in southwestern Montana, United States, to illustrate this fragmented institutional landscape. Our goals are to (a) describe the patchwork of agencies and institutional actors whose intersecting authorities and actions influence the EAW in the study basin; (b) describe the range of governance mechanisms these agencies use, including laws, policies, administrative programs, and planning processes; and (c) assess the extent to which the collective governance regime creates gaps in responsibility. We find the water governance regime includes a range of nested mechanisms that in various ways facilitate or hinder the governance of EAW. We conclude the current multilevel governance regime leaves certain aspects of EAW unaddressed and does not adequately account for the interconnections between water in different parts of the ecosystem, creating integrative gaps. We suggest that more intentional and robust coordination could provide a means to address these gaps.Item “In Montana, you're only a week away from a drought”: Ranchers’ perspectives on flood irrigation and beaver mimicry as drought mitigation strategies(Elsevier BV, 2022-08) Moore, Megan A.; McEvoy, JamieThe concept of natural water storage has gained traction as an alternative to traditional dams that can potentially mitigate the impacts of changing precipitation patterns by slowing runoff and increasing aquifer recharge. We investigated the barriers and opportunities for two natural water storage practices, flood irrigation and beaver mimicry. We interviewed 8 amenity and 14 traditional ranchers in the Red Rock Watershed in southwest Montana. We found ranchers predominately rely on reactive, rather than proactive drought strategies. Most amenity ranchers had formal drought plans in place, but none of the traditional ranchers had formal drought plans. Ranchers perceived the two natural water storage practices differently. While all agreed on the benefits of flood irrigation, they saw the barriers, such as labor issues and loss of efficiency to outweigh the benefits. Many ranchers were skeptical of the benefits beaver mimicry could provide and voiced concerns over the cost, permits, water rights, and operational impacts. While there are barriers to both strategies, local agencies and actors can work to build trust and practice flexibility when working with ranchers. Ranchers mentioned potential incentives for implementing these strategies, which local agencies can use when working with them.Item CHANGE: Climate and Hydrology Academic Network for Governance and the Environment(American Meteorological Society, 2011-08) Garfin, Gregg; Gregg, Nancy; Magaña, Victor; Stewart, Ronald; Rolfe, J. Terry; McEvoy, JamieItem Defining Ecological Drought for the Twenty-First Century(American Meteorological Society, 2017-12) Crausbay, Shelley D.; Ramirez, Aaron R.; Carter, Shawn L.; Cross, Molly S.; Hall, Kimberly R.; Bathke, Deborah J.; Betancourt, Julio L.; Colt, Steve; Cravens, Amanda E.; Dalton, Melinda S.; Dunham, Jason B.; Hay, Lauren E.; Hayes, Michael J.; McEvoy, Jamie; McNutt, Chad A.; Moritz, Max A.; Nislow, Keith H.; Raheem, Nejem; Sanford, ToddDroughts of the twenty-first century are characterized by hotter temperatures, longer duration, and greater spatial extent, and are increasingly exacerbated by human demands for water. This situation increases the vulnerability of ecosystems to drought, including a rise in drought-driven tree mortality globally (Allen et al. 2015) and anticipated ecosystem transformations from one state to another—for example, forest to a shrubland (Jiang et al. 2013). When a drought drives changes within ecosystems, there can be a ripple effect through human communities that depend on those ecosystems for critical goods and services (Millar and Stephenson 2015). For example, the “Millennium Drought” (2002–10) in Australia caused unanticipated losses to key services provided by hydrological ecosystems in the Murray–Darling basin—including air quality regulation, waste treatment, erosion prevention, and recreation. The costs of these losses exceeded AUD $800 million, as resources were spent to replace these services and adapt to new drought-impacted ecosystems (Banerjee et al. 2013). Despite the high costs to both nature and people, current drought research, management, and policy perspectives often fail to evaluate how drought affects ecosystems and the “natural capital” they provide to human communities. Integrating these human and natural dimensions of drought is an essential step toward addressing the rising risk of drought in the twenty-first centuryItem Cultural theory of risk as a heuristic for understanding perceptions of oil and gas development in Eastern Montana, USA(Elsevier BV, 2017-11) McEvoy, Jamie; Gilbertz, Susan J.; Anderson, Matthew B.; Ormerod, Kerri Jean; Bergmann, Nicolas T.This paper applies Douglas’ cultural theory of risk to understand perceptions of risk associated with oil and gas development in eastern Montana. Based on the analysis of interviews with 36 rural residents, findings show the dominant perception of risk is most closely aligned with an Individualist worldview. Despite direct experience with oil or wastewater spills, most interviewees described spills as “no big deal”, viewed nature as resilient, and felt that the economic benefits outweigh negative impacts. Cultural theory was a useful heuristic for understanding this dominant worldview, as well as identifying points of deviation. For example, interviewees discussed the benefits of landowner associations – a more Egalitarian approach to dealing with oil companies. Some landowners relied on external authorities (e.g., sheriff) when dealing with oil companies, revealing a Hierarchical approach to issues they face. Interviewees expressed frustration with the lack of enforcement of existing regulations, which can be interpreted as either support for – or indictment of – Hierarchical solutions. While the Individualist worldview is dominant, our qualitative analysis reveals the complex tensions at work among rural residents. The results suggest areas where policymakers, advocacy groups, and residents may find common ground to address potential environmental and health risks.Item Ecological Drought: Accounting for the Non-Human Impacts of Water Shortage in the Upper Missouri Headwaters Basin, Montana, USA(MDPI AG, 2018-02) McEvoy, Jamie; Bathke, Deborah J.; Burkardt, Nina; Cravens, Amanda E.; Haigh, Tonya; Hall, Kimberly R.; Hayes, Michael J.; Jedd, Theresa; Poděbradská, Markéta; Wickham, ElliotWater laws and drought plans are used to prioritize and allocate scarce water resources. Both have historically been human-centric, failing to account for non-human water needs. In this paper, we examine the development of instream flow legislation and the evolution of drought planning to highlight the growing concern for the non-human impacts of water scarcity. Utilizing a new framework for ecological drought, we analyzed five watershed-scale drought plans in southwestern Montana, USA to understand if, and how, the ecological impacts of drought are currently being assessed. We found that while these plans do account for some ecological impacts, it is primarily through the narrow lens of impacts to fish as measured by water temperature and streamflow. The latter is typically based on the same ecological principles used to determine instream flow requirements. We also found that other resource plans in the same watersheds (e.g., Watershed Restoration Plans, Bureau of Land Management (BLM) Watershed Assessments or United States Forest Service (USFS) Forest Plans) identify a broader range of ecological drought risks. Given limited resources and the potential for mutual benefits and synergies, we suggest greater integration between various planning processes could result in a more holistic consideration of water needs and uses across the landscape.Item Integrating Ecological Impacts: Perspectives on Drought in the Upper Missouri Headwaters, Montana, United States(American Meteorological Society, 2021-04) Cravens, Amanda E.; McEvoy, Jamie; Zoanni, Dionne; Crausbay, Shelley; Ramirez, Aaron; Cooper, Ashley E.Drought is a complex challenge experienced in specific locations through diverse impacts, including ecological impacts. Different professionals involved in drought preparedness and response approach the problem from different points of view, which means they may or may not recognize ecological impacts. This study examines the extent to which interviewees perceive ecological drought in the Upper Missouri Headwaters basin in southwestern Montana. Through semistructured interviews, this research investigates individuals’ perceptions of drought by analyzing how they define drought, how they describe their roles related to drought, and the extent to which they emphasize ecological impacts of drought. Results suggest that while most interviewees have an integrated understanding of drought, they tend to emphasize either ecological or nonecological impacts of drought. This focus was termed their drought orientation. Next, the analysis considers how participants understand exposure to drought. Results indicate that participants view drought as a complex problem driven by both human and natural factors. Last, the paper explores understandings of the available solution space by examining interviewees’ views on adaptive capacity, particularly factors that facilitate or hinder the ability of the Upper Missouri Headwaters region to cope with drought. Participants emphasized that adaptive capacity is both helped and hindered by institutional, cultural, and economic factors, as well as by available information and past resource management practices. Understanding how interviewees perceive the challenges of drought can shape drought preparedness and response, allowing those designing programs to better align their efforts to the perceptions of their target audience.Item Murky waters: divergent ways scientists, practitioners, and landowners evaluate beaver mimicry(Resilience Alliance, Inc., 2022-01) Pfaeffle, Tori; Moore, Megan A.; Cravens, Amanda E.; McEvoy, Jamie; Bamzai-Dodson, AparnaBeaver mimicry is a fast-growing conservation technique to restore streams and manage water that is gaining popularity within the natural resource management community because of a wide variety of claimed socio-environmental benefits. Despite a growing number of projects, many questions and concerns about beaver mimicry remain. This study draws on qualitative data from 49 interviews with scientists, practitioners, and landowners, to explore the question of how beaver mimicry projects continue to be promoted and implemented, despite the lack of comprehensive scientific studies and unclear regulatory requirements. Specifically, we investigate how these three groups differentially assess the salience, credibility, and legitimacy of evidence for beaver mimicry and analyze how those assessments affect each group’s conclusions about the feasibility, desirability, and scalability of beaver mimicry. By highlighting the interaction between how someone assesses evidence and how they draw conclusions about an emerging natural resource management approach, we draw attention to the roles of experiential evidence and scientific data in debates over beaver mimicry. Our research emphasizes that understanding how different groups perceive salience, credibility, and legitimacy of scientific information is necessary for understanding how they make assessments about conservation and natural resource management strategies.Item A typology of drought decision making: Synthesizing across cases to understand drought preparedness and response actions(Elsevier BV, 2021-09) Cravens, Amanda E.; Henderson, Jen; Friedman, Jack; Burkardt, Nina; Cooper, Ashley E.; Haigh, Tonya; Hayes, Michael; McEvoy, Jamie; Paladino, Stephanie; Wilke, Adam K.; Wilmer, HaileyDrought is an inescapable reality in many regions, including much of the western United States. With climate change, droughts are predicted to intensify and occur more frequently, making the imperative for drought management even greater. Many diverse actors – including private landowners, business owners, scientists, non-governmental organizations (NGOs), and managers and policymakers within tribal, local, state, and federal government agencies – play multiple, often overlapping roles in preparing for and responding to drought. Managing water is, of course, one of the most important roles that humans play in both mitigating and responding to droughts; but, focusing only on “water managers” or “water management” fails to capture key elements related to the broader category of drought management. The respective roles played by those managing drought (as distinct from water managers), the interactions among them, and the consequences in particular contexts, are not well understood. Our team synthesized insights from 10 in-depth case studies to understand key facets of decision making about drought preparedness and response. We present a typology with four elements that collectively describe how decisions about drought preparedness and response are made (context and objective for a decision; actors responsible; choice being made or action taken; and how decisions interact with and influence other decisions). The typology provides a framework for system-level understanding of how and by whom complex decisions about drought management are made. Greater system-level understanding helps decision makers, program and research funders, and scientists to identify constraints to and opportunities for action, to learn from the past, and to integrate ecological impacts, thereby facilitating social learning among diverse participants in drought preparedness and response.Item A Geospatial Approach for Identifying and Exploring Potential NaturalWater Storage Sites(2017-08) Holmes, Danika L.; McEvoy, Jamie; Dixon, Jean L.; Payne, ScottAcross the globe, climate change is projected to affect the quantity, quality, and timing of freshwater availability. In western North America, there has been a shift toward earlier spring runoff and more winter precipitation as rain. This raises questions about the need for increased water storage to mitigate both floods and droughts. Some water managers have identified natural storage structures as valuable tools for increasing resiliency to these climate change impacts. However, identifying adequate sites and quantifying the storage potential of natural structures is a key challenge. This study addresses the need for a method for identifying and estimating floodplain water storage capacity in a manner that can be used by water planners through the development of a model that uses open-source geospatial data. This model was used to identify and estimate the storage capacity of a 0.33 km2 floodplain segment in eastern Montana, USA. The result is a range of storage capacities under eight natural water storage conditions, ranging from 900 m3 for small floods to 321,300 m3 for large floods. Incorporating additional hydraulic inputs, stakeholder needs, and stakeholder perceptions of natural storage into this process can help address more complex questions about using natural storage structures as ecosystem-based climate change adaptation strategies.