13 research outputs found
Data and R code supporting: Effects of insecticide spray drift on arthropod prey resources of birds in grasslands in Minnesota
No full textDescriptions for each of the files can be found in ReadMe.txt.This repository contains the data and R code used to conduct the analyses in the article "Effects of insecticide spray drift on arthropod prey resources of birds in grasslands in Minnesota" published in The Journal of Wildlife Management.This project was funded by the Environment and Natural Resources Trust Fund as recommended by the Legislative-Citizen Commission on Minnesota Resources (ML 2016, Ch. 186, Sec. 2, Subd. 03n). The Minnesota Department of Natural Resources provided logistical support and contributed funding through the Federal Aid in Wildlife Restoration Act (Grant F19AF00431/W-71-R-7). This research was also supported by the Minnesota Cooperative Fish and Wildlife Research Unit (cooperators include the U.S. Geological Survey, Minnesota Department of Natural Resources, the Wildlife Management Institute, the U.S. Fish and Wildlife Service, and the University of Minnesota).Goebel, Katelin M; Andersen, David E; Rice, Pamela J; Davros, Nicole M. (2024). Data and R code supporting: Effects of insecticide spray drift on arthropod prey resources of birds in grasslands in Minnesota. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/6aqk-s083
Insecticide drift and impacts on arthropod prey resources of birds in public grasslands in Minnesota
No full textUniversity of Minnesota M.S. thesis.February 2021. Major: Natural Resources Science and Management. Advisor: David Andersen. 1 computer file (PDF); xv, 118 pages.Increasing evidence suggests that exposure to pesticides may be a considerable threat to grassland wildlife in agricultural landscapes. In Minnesota, many remaining grasslands are fragmented and surrounded by row crops, including soybeans that are routinely treated with foliar insecticides to control soybean aphids. These insecticides have been shown to be highly toxic to non-target organisms including birds and pollinators in laboratory settings; however, little information exists regarding the impact of spray drift on free-ranging wildlife. My objectives were to evaluate direct and indirect effects of soybean aphid insecticide applications on grassland birds and their insect food resources in the agricultural region of Minnesota. My treatment study sites were comprised of public grasslands bordering privately-owned soybean fields treated with foliar insecticides and non-treated control sites, and I collected samples during the summers of 2017 and 2018. I quantified chemical deposition to assess the extent of insecticide drift into public grasslands and surveyed the insect community pre- and post-application of insecticides to measure changes in abundance, biomass, and richness of insect food for grassland birds. I detected insecticides, primarily chlorpyrifos, in grasslands up to 400 m from field edges regardless of whether adjacent fields were sprayed with insecticides, and deposition was greatest within 25 m of field edges. I measured chlorpyrifos residues that were above the contact LD50 for honey bees up to 25 m from field edges in grasslands. The masses of chlorpyrifos that birds could consume in a day (if food items contained chlorpyrifos residues equivalent to those in my arthropod samples) were below the acute oral LD50 values for several grassland bird species. I used linear mixed models in a hierarchical selection approach to assess the importance of distance from field edge, spray method (plane or ground sprayer), and sampler height (mid-canopy or ground) in explaining insecticide deposition in grasslands. The best-supported model of deposition on passive sampling devices included an inverse association of distance from the field edge with deposition and positive association of samplers being placed at the mid-canopy level compared to ground level. Canopy cover of live vegetation had an inverse association with deposition. The best-supported model of insecticide deposition on arthropods included effects of air temperature and maximum height of vegetation. Short-term reductions in total arthropod abundance, bird prey abundance, and Coleopteran family richness occurred in grasslands bordered by fields sprayed with foliar insecticides. The total abundance of arthropods in grasslands bordering sprayed soybean fields was lower 3–5 days after insecticide applications. The abundance of arthropods important in grassland bird diets (specifically, Araneaens, Coleopterans, Orthopterans, and Lepidopteran larvae) was also lower after nearby spraying, with lower abundance measured in treatments sites 19–21 days post-spraying. Coleopteran family richness at treatment sites was lower than control sites 3–5 days after insecticide applications. Measures of total consumable dry biomass, bird prey biomass, family richness of Araneaens, family richness of Hemipterans, and family richness of Orthopterans were not different between treatment and control sites post-spraying. My findings suggest that spray drift from soybean aphid insecticides is occurring in grasslands in Minnesota and may be impacting food resources for grassland birds and other insectivorous wildlife. My results can inform land acquisition and management decisions to reduce impacts of insecticide spray drift on grassland wildlife in agricultural landscapes.Goebel, Katelin. (2021). Insecticide drift and impacts on arthropod prey resources of birds in public grasslands in Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/219388
Food Availability for Wood Turtles (Glyptemys Insculpta) in Managed and Natural Woodlands
No full textUniversity Honors Capstone Project Poster, University of Minnesota Duluth, 2016. Advisor: Dr. Ron Moen; IBS graduate student: Maddy Cochrane. UMD Undergraduate Research Opportunities Program (UROP) and BURST programs.A study on wood turtles was started in the spring of 2015 by UMD scientists and the
MN DNR to assess habitat use and responses to management actions. Turtles were fitted
with GPS units and VHF transmitters for tracking purposes. Wood turtles are largely terrestrial
and use forested areas for foraging.MN DNR - funding the wood turtle project.Goebel, Katelin; Cochrane, Madaline; Brown, Donald; Moen, Ron. (2016). Food Availability for Wood Turtles (Glyptemys Insculpta) in Managed and Natural Woodlands. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/195437
The Most Elegant Collateral Embellishment of Taste
No full textThe author reviews A Treatise on the Art of Dancing: The Most Elegant Collateral Embellishment of Taste from A Treatise on the Art of Dancing (1722) by Giovanni Andrea Gallini
THE KNIVES I USED
No full textThe Knives I Used is a collection of short stories written between August 2020 and April 2022, while the author was a student at The University of Southern Mississippi. This thesis contains stories joined by the thematic thread of self-harm and demonstrates the spectrum of ways it presents itself in individuals
Minority Community Resilience and Cultural Heritage Preservation: A Case Study of Gullah Geechee Community
No full textThe Gullah Geechee community of the south-eastern United States endures today as a minority group with a significant cultural heritage. However, little research has been conducted to explore this community’s resilience in the face of climate change and other environmental impacts. The database Web of Science was searched and 109 publications on the Gullah Geechee community were identified. Using quantitative and qualitative methods, we analyzed the publications to identify patterns and primary research themes related to the Gullah Geechee community’s resilience. Findings revealed that Gullah Geechee‘s cultural heritage is vulnerable to climatic and societal changes, but can also be a source for enhancing community resilience and promoting more sustainable community-led heritage and tourism developments. A framework is proposed for building community resilience in the context of minority and/or marginalized communities (e.g., Gullah Geechee). This study highlights the urgent need to not only better understand and incorporate a community’s economic dimensions and losses in various decision- and policy-making processes but also their cultural and social dimensions and losses. This systematic analysis can help inform both heritage preservation and community-led tourism practices and policies related to the Gullah Geechee community, as well as help direct new research efforts focusing on minority and/or marginalized community resilience.History, Form & Aesthetic
Access and Excellence: Organizational Communication in the Educational Outreach Office
No full textabstract: Organizational research provides important insight to communication practices in an institution. The research study examines organizational communication within a large university setting. Utilizing the outreach department as a sample population, this paper discusses the differences in perception of the organization created by power structures. These areas are discussed with respect to the mission of an organization, the constant changes of a university environment and the value and appreciation of employees in the organization. Organizational analysis is an important part of improving the effectiveness and creating open communication throughout an organization
Clinical Practice and Canadian Nursing Faculty: Keeping a Foot in Both Worlds
No full textMany benefits have been associated with nurse educator engagement in clinical practice (CP). However, nursing faculty CP has received minimal attention since the early 1990s and has rarely been discussed in Canada. Through interviews with twelve Bachelor of Science in Nursing (BSN) faculty, this study used grounded theory to explore how Canadian BSN educators currently engage in CP. The core category identified was "Keeping a Foot in Both Worlds", which captures the tension that may be experienced by faculty who choose to engage as both clinical practitioners and teachers. Faculty in this dual role described themselves as uniquely positioned to integrate theory and practice and to connect the campus and clinical settings. This study also highlights the challenges BSN faculty face while maintaining a CP and underlines the positive impact this practice might have on teaching/learning. Recommendations include cultural and structural considerations for nurses in CP, education, and leadership.Faculty PracticeNursing Faculty PracticeFaculty, NursingClinical Nursing PracticeFaculty Clinical Practic
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A predictive mirror twin Higgs with small Z₂ breaking
No full text© 2020, The Author(s). The twin Higgs mechanism is a solution to the little hierarchy problem in which the top partner is neutral under the Standard Model (SM) gauge group. The simplest mirror twin Higgs (MTH) model — where a Z2 symmetry copies each SM particle — has too many relativistic degrees of freedom to be consistent with cosmological observations. We demonstrate that MTH models can have an observationally viable cosmology if the twin mass spectrum leads to twin neutrino decoupling before the SM and twin QCD phase transitions. Our solution requires the twin photon to have a mass of ∼ 20 MeV and kinetically mix with the SM photon to mediate entropy transfer from the twin sector to the SM. This twin photon can be robustly discovered or excluded by future experiments. Additionally, the residual twin degrees of freedom present in the early Universe in this scenario would be detectable by future observations of the cosmic microwave background
