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Building Before: Community Resiliency As Emergency Management, Alexandria Rinne Apr 2023

Building Before: Community Resiliency As Emergency Management, Alexandria Rinne

Honors Program: Senior Projects (Public)

This project seeks to address gaps in emergency preparedness education related to tornado response. Through an examination of current research about best practices for tornado emergency management response and an examination of the needs of FEMA Regions 7 and 8, the author has identified key strategies and stakeholders to increase positive outcome through building community engagement and resiliency. Three presentations were created for delivery to key community stakeholders—local government officials; non-governmental organizations, social networks, and associations; and individual private citizens. The project offers an overview of background research and provides presentation slide decks, scripts, and discussion guides, all created with …


United States Census Bureau Statistical Quality Standards Apr 2023

United States Census Bureau Statistical Quality Standards

Copyright, Fair Use, Scholarly Communication, etc.

United States Census Bureau Statistical Quality Standards (April 19, 2023), the leading source of quality data about the nation's people and economy.


Climate Change, Site Formation, And Indigenous Use Of Coastlines In Barbuda, Isabel C. Rivera-Collazo, Sophia Perdikaris Apr 2023

Climate Change, Site Formation, And Indigenous Use Of Coastlines In Barbuda, Isabel C. Rivera-Collazo, Sophia Perdikaris

School of Global Integrative Studies: Faculty Publications

This article explores the landscape dynamics at the island of Barbuda in the context of changing climate to understand (1) the environmental setting of indigenous settlements; (2) the impacts of current coastal processes; and (3) the potential threats moving forward toward increasing pressure of climate change. Focusing on the site of Seaview, on the east coast of Barbuda, we use geoarchaeological methods to reconstruct the ancient geomorphological setting, investigate changes post-abandonment, and identify the hazards faced under future sea-level projections. Our study shows that (1) sea level stabilization after the Mid-Holocene allowed the formation of coral reefs, seagrass beds and …


How Resilience Is Framed Matters For Governance Of Coastal Social-Ecological Systems, Sarah Clement, Javad Jozaei, Michael Mitchell, Craig R. Allen, Ahjond S. Garmestani Apr 2023

How Resilience Is Framed Matters For Governance Of Coastal Social-Ecological Systems, Sarah Clement, Javad Jozaei, Michael Mitchell, Craig R. Allen, Ahjond S. Garmestani

School of Natural Resources: Faculty Publications

Effective governance of social-ecological systems (SES) is an enduring challenge, especially in coastal environments where accelerating impacts of climate change are increasing pressure on already stressed systems. While resilience is often proposed as a suitable framing to re-orient governance and management, the literature includes many different, and sometimes conflicting, definitions and ideas that influence how the concept is applied, especially in coastal environments. This study combines discourse analysis of the coastal governance literature and key informant interviews in Tasmania, Australia, demonstrating inconsistencies and confusion in the way that resilience is framed in coastal governance research and practice. We find that …


A Diverse Flea (Siphonaptera) Assemblage From The Small Mammals Of Central New Mexico, Dianne E. Peterson, Jonathan L. Dunnum, Schuyler W. Liphart, Karen A. Boegler, Ralph P. Eckerlin, Eric P. Hoberg, Martha O. Perez-Arriaga, Katrina Derieg, David Garnand, Mariel L. Campbell, Joseph A. Cook Apr 2023

A Diverse Flea (Siphonaptera) Assemblage From The Small Mammals Of Central New Mexico, Dianne E. Peterson, Jonathan L. Dunnum, Schuyler W. Liphart, Karen A. Boegler, Ralph P. Eckerlin, Eric P. Hoberg, Martha O. Perez-Arriaga, Katrina Derieg, David Garnand, Mariel L. Campbell, Joseph A. Cook

MANTER: Journal of Parasite Biodiversity

The geographical ranges of many mammals and their associated parasites are dynamic. Comprehensive documentation of these communities over time provides a foundation for interpreting how changing environmental conditions, driven by accelerating climate change, other anthropogenic disturbances, and natural events, may influence host-parasite interactions. Fleas (Order Siphonaptera) are obligate, hematophagous parasites of birds and mammals with medical interest because of their role in transmitting pathogens. From 2016 to 2019, we sampled the small mammal and associated flea communities in El Malpais National Conservation Area (El Malpais) in Cibola County, New Mexico. Among 898 mammalian specimens, 925 fleas representing 29 species were …


Water Current, Volume 55, No. 1, Spring 2023 Apr 2023

Water Current, Volume 55, No. 1, Spring 2023

Water Current Newsletter

No abstract provided.


Droughtscape, Spring 2023, National Drought Mitigation Center Apr 2023

Droughtscape, Spring 2023, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

DroughtScape, Spring 2023


Wakara's Waterscapes: Storytelling, Cartography, And Rhetorical Sovereignty On The Shores Of The Green River, Abbey O'Brien Apr 2023

Wakara's Waterscapes: Storytelling, Cartography, And Rhetorical Sovereignty On The Shores Of The Green River, Abbey O'Brien

Honors Program: Senior Projects (Public)

In the mid nineteenth-century, Wakara, a prominent Ute leader, witnessed the invasion of his homeland by Mormon settlers and mountain-men. He met the scouts and explorers who were sent out to examine the land and waterscapes, and who drew maps along their way. It was those same maps which were eventually used as tools to justify colonial expansion all across the Utah territories, Wakara’s home. But Wakara resisted. Employing his understandings of the roles that cartography and the written word played in Mormon and settler discourse, Wakara created his own maps in order to assert his Indigenous authority over the …


Crpl 400/800: Introduction To Planning—A First Project Benchmark Portfolio, Abigail L. Cochran Apr 2023

Crpl 400/800: Introduction To Planning—A First Project Benchmark Portfolio, Abigail L. Cochran

UNL Faculty Course Portfolios

In this benchmark portfolio, I reflect on course design and assess student learning in a cross-listed course that serves as a core, introductory course for all undergraduate minor and graduate major students in the Community and Regional Planning (CRP) program, CRPL 400/800: Introduction to Planning. CRPL 400/800 is a survey course intended to introduce students to the discipline of community and regional planning. I taught this course fully online in the spring of 2023, which represented a new format for the class (it is typically taught in person) and a new format of instruction for me. Content wise, this course …


A Plea For Scale, And Why It Matters For Invasive Species Management, Biodiversity And Conservation, Nicholas A. Mcmillan, Samuel D. Fuhlendorf, Craig A. Davis, Robert G. Hamilton, Landon. K. Neumann, Samantha M. Cady Mar 2023

A Plea For Scale, And Why It Matters For Invasive Species Management, Biodiversity And Conservation, Nicholas A. Mcmillan, Samuel D. Fuhlendorf, Craig A. Davis, Robert G. Hamilton, Landon. K. Neumann, Samantha M. Cady

Department of Agronomy and Horticulture: Faculty Publications

  1. Invasive species are suspected to be major contributors to biodiversity declines worldwide. Counterintuitively, however, invasive species effects are likely scale dependent and are hypothesized to be positively related to biodiversity at large spatial scales. Past studies investigating the effect of invasion on biodiversity have been mostly conducted at small scales (<100 m2) that cannot represent large dynamic landscapes by design. Therefore, replicated experimental evidence supporting a negative effect of invasive plants on biodiversity is lacking across many landscape types, including large grasslands.

  2. We collected data across eight large (333–809 ha) grassland landscapes managed with pyric herbivory—that is the recoupling …


Soil Depth And Geographic Distance Modulate Bacterial Β-Diversity In Deep Soil Profiles Throughout The U.S. Corn Belt, Lucas Dantas Lopes, Stephanie L. Futrell, Emily E. Wright, Gerasimos J. Danalatos, Michael J. Castellano, Tony J. Vyn, Sotirios V. Archontoulis, Daniel P. Schachtman Mar 2023

Soil Depth And Geographic Distance Modulate Bacterial Β-Diversity In Deep Soil Profiles Throughout The U.S. Corn Belt, Lucas Dantas Lopes, Stephanie L. Futrell, Emily E. Wright, Gerasimos J. Danalatos, Michael J. Castellano, Tony J. Vyn, Sotirios V. Archontoulis, Daniel P. Schachtman

Department of Agronomy and Horticulture: Faculty Publications

Understanding how microbial communities are shaped across spatial dimensions is of fundamental importance in microbial ecology. However, most studies on soil biogeography have focused on the topsoil microbiome, while the factors driving the subsoil microbiome distribution are largely unknown. Here we used 16S rRNA amplicon sequencing to analyse the factors underlying the bacterial β-diversity along vertical (0–240 cm of soil depth) and horizontal spatial dimensions (~500,000 km2) in the U.S. Corn Belt. With these data we tested whether the horizontal or vertical spatial variation had stronger impacts on the taxonomic (Bray-Curtis) and phylogenetic (weighted Unifrac) β-diversity. Additionally, we …


An Annotated Checklist Of The Dung Beetles (Coleoptera: Geotrupidae And Scarabaeidae, Subfamilies Aphodiinae And Scarabaeinae) Of Oaxaca, Mexico, Burt Kohlmann, Alfonsina Arriaga-Jiménez, Eder F. Mora-Aguilar Mar 2023

An Annotated Checklist Of The Dung Beetles (Coleoptera: Geotrupidae And Scarabaeidae, Subfamilies Aphodiinae And Scarabaeinae) Of Oaxaca, Mexico, Burt Kohlmann, Alfonsina Arriaga-Jiménez, Eder F. Mora-Aguilar

Insecta Mundi

Abstract. A checklist of the dung beetles (Coleoptera: Geotrupidae; Scarabaeidae: Aphodiinae and Scara­baeinae) of Oaxaca, Mexico, is presented for the first time. The checklist contains 252 taxa, 15 Geotrupidae, 77 Aphodiinae, and 160 Scarabaeinae. The state includes 58 genera and 15 tribes, where Onthophagus is the most species-rich genus with 49 taxa, followed by Ataenius with 22, Canthon with 17 and Phanaeus with 15 taxa. Valid names, as well as synonyms, are provided. First records, notes on presently recognized spe­cies, nomenclatural problems, and biodiversity comparisons are included. Phanaeus dionysius Kohlmann, Arriaga-Jiménez and Rös, 2018 (Coleoptera: Scarabaeidae: Scarabaeinae) is re-established as …


Public Support: A Missing Variable In The Trade Policy Equation, Jill O’Donnell Mar 2023

Public Support: A Missing Variable In The Trade Policy Equation, Jill O’Donnell

Yeutter Institute International Trade Policy Review

As Canada considers launching free trade agreement (FTA) negotiations with Ecuador, the government wants to know what Canadians think. Ottawa makes it easy for citizens to weigh in, inviting Canadians to “join the discussion” and submit their “views, reflections and priorities” on the potential FTA through a Global Affairs Canada web page that is clear, inviting, and user-friendly. Under a section titled, “Who should participate?” the first answer given is “individuals.”

Although the Biden administration has been clear that it will not seek new FTA negotiations, taking a page from Canada’s public consultation playbook may be instructive, at least when …


How Do Land Use And Land Cover Changes After Farmland Abandonment Affect Soil Properties And Soil Nutrients In Mediterranean Mountain Agroecosystems?, Estela Nadal-Romero, Makki Khorchani, Leticia Gaspar, José Arnáez, Erik Cammeraat, Ana Navas, Teodoro Lasanta Mar 2023

How Do Land Use And Land Cover Changes After Farmland Abandonment Affect Soil Properties And Soil Nutrients In Mediterranean Mountain Agroecosystems?, Estela Nadal-Romero, Makki Khorchani, Leticia Gaspar, José Arnáez, Erik Cammeraat, Ana Navas, Teodoro Lasanta

School of Natural Resources: Faculty Publications

Mediterranean mountains are sensitive agroecosystems that have suffered intense land use and land cover changes (LULCC) during the last century. From the middle of the twentieth century, most of the cultivated lands in Mediterranean mountains were abandoned, allowing the recovery of vegetation (through natural revegetation and afforestation programmes). To examine the effects of farmland abandonment, secondary succession (natural revegetation) and afforestation, an intensive soil sampling was carried out in the Aragu´as catchment (Central Spanish Pyrenees) including sparsely vegetated areas (badlands), grasslands, shrublands and afforested sites. LULCC were mapped, and soil physico-chemical properties were analysed in reference sites (unaltered areas during …


Engagement In Water Governance Action Situations In The Lake Champlain Basin, Patrick Bitterman, Christopher Koliba Mar 2023

Engagement In Water Governance Action Situations In The Lake Champlain Basin, Patrick Bitterman, Christopher Koliba

School of Global Integrative Studies: Faculty Publications

Water quality governance encompasses multiple “wicked” interacting problems that manifest within social-ecological systems. Concerned governments, institutions, and actors concerned with addressing these issues must wrestle with complex systems that span time, space, and scale. This complexity of connected systems requires the participation of multiple actors across political boundaries, problem areas, and hydrologic domains. In Lake Champlain (US), frequent cyanobacteria blooms negatively affect property values, recreational activities, and public infrastructure, in addition to their impacts on the aquatic ecosystem. Through a survey of actors working on water quality in the Lake Champlain Basin, we analyze how actor participation in structured issue …


The Influence Of Complex Coastlines On The Sea Breeze And Convection Initiation In Coastal North Carolina, Logan Howard, Adam L. Houston Mar 2023

The Influence Of Complex Coastlines On The Sea Breeze And Convection Initiation In Coastal North Carolina, Logan Howard, Adam L. Houston

Honors Program: Senior Projects (Public)

The sea breeze is a common phenomenon in coastal regions around the world. Their development and propagation can be treated as a density current. It is well known that many factors influence density current propagation, including wind. Depending on the orientation, the wind speed and shear can enhance or inhibit the development of the sea breeze. In places like eastern North Carolina, complex coastal geography can create river and sound breezes that, upon collision, have the potential to initiate thunderstorms. Using Cloud Model 1, simulations were conducted to model the behavior of the sea breezes in eastern North Carolina and …


Pan-Arctic Soil Moisture Control On Tundra Carbon Sequestration And Plant Productivity, Donatella Zona, Peter M. Lafleur, Koen Hufkens, Beniamino Gioli, Barbara Bailey, George Burba, Eugénie S. Euskirchen, Jennifer D. Watts, Kyle A. Arndt, Mary Farina, John S. Kimball, Martin Heimann, Mathias Göckede, Martijn Pallandt, Torben R. Christensen, Mikhail Mastepanov, Efrén López-Blanco, Albertus J. Dolman, Roisin Commane, Charles E. Miller, Josh Hashemi, Lars Kutzbach, David Holl, Julia Boike, Christian Wille, Torsten Sachs, Aram Kalhori, Elyn R. Humphreys, Oliver Sonnentag, Gesa Meyer, Gabriel H. Gosselin, Philip Marsh, Walter C. Oechel Mar 2023

Pan-Arctic Soil Moisture Control On Tundra Carbon Sequestration And Plant Productivity, Donatella Zona, Peter M. Lafleur, Koen Hufkens, Beniamino Gioli, Barbara Bailey, George Burba, Eugénie S. Euskirchen, Jennifer D. Watts, Kyle A. Arndt, Mary Farina, John S. Kimball, Martin Heimann, Mathias Göckede, Martijn Pallandt, Torben R. Christensen, Mikhail Mastepanov, Efrén López-Blanco, Albertus J. Dolman, Roisin Commane, Charles E. Miller, Josh Hashemi, Lars Kutzbach, David Holl, Julia Boike, Christian Wille, Torsten Sachs, Aram Kalhori, Elyn R. Humphreys, Oliver Sonnentag, Gesa Meyer, Gabriel H. Gosselin, Philip Marsh, Walter C. Oechel

Daugherty Water for Food Global Institute: Faculty Publications

Long-term atmospheric CO2 concentration records have suggested a reduction in the positive effect of warming on high-latitude carbon uptake since the 1990s. A variety of mechanisms have been proposed to explain the reduced net carbon sink of northern ecosystems with increased air temperature, including water stress on vegetation and increased respiration over recent decades. However, the lack of consistent long-term carbon flux and in situ soil moisture data has severely limited our ability to identify the mechanisms responsible for the recent reduced carbon sink strength. In this study, we used a record of nearly 100 site-years of eddy covariance …


Abnormal Ear Development In Corn: Does Hybrid, Environment, And Seeding Rate Matter?, Osler A. Ortez, Anthony J. Mcmechan, Emily Robinson, Thomas C. Hoegemeyer, Reka Howard, Roger W. Elmore Mar 2023

Abnormal Ear Development In Corn: Does Hybrid, Environment, And Seeding Rate Matter?, Osler A. Ortez, Anthony J. Mcmechan, Emily Robinson, Thomas C. Hoegemeyer, Reka Howard, Roger W. Elmore

Department of Agronomy and Horticulture: Faculty Publications

Corn (Zea mays L.) yields have increased in the United States since the 1930s and in other parts of the world since the 1950s and 1960s because of improvements in agricultural management and genotypes. Despite these increases, production concerns still exist. In July 2016, abnormal ear development (multi-ears per node, barbell-ears, and short-husks) was reported in cornfields that extended from the Texas Panhandle to eastern Colorado and east through Kansas, Nebraska, Iowa, and Illinois. Surveys in Nebraska farmer fields revealed significant productivity losses due to the issues, but little was known about the underlying causes. A research study was …


The Effect Of Relative Humidity On Eddy Covariance Latent Heat Flux Measurements And Its Implication For Partitioning Into Transpiration And Evaporation, Weijie Zhang, Martin Jung, Mirco Migliavacca, Rafael Poyatos, Diego G. Miralles, Tarek S. El-Madany, Marta Galvagno, Arnaud Carrara, Nicola Arriga, Andreas Ibrom, Ivan Mammarella, Dario Papale, Jamie R. Cleverly, Michael Liddell, Georg Wohlfahrt, Christian Markwitz, Matthias Mauder, Eugenie Paul-Limoges, Marius Schmidt, Sebastian Wolf, Christian Brümmer, M. Altaf Arain, Silvano Fares, Tomomichi Kato, Jonas Ardö, Walter Oechel, Chad Hanson, Mika Korkiakoski, Sébastien Biraud, Rainer Steinbrecher, Dave Billesbach, Leonardo Montagnani, William Woodgate, Changliang Shao, Nuno Carvalhais, Markus Reichstein, Jacob A. Nelson Mar 2023

The Effect Of Relative Humidity On Eddy Covariance Latent Heat Flux Measurements And Its Implication For Partitioning Into Transpiration And Evaporation, Weijie Zhang, Martin Jung, Mirco Migliavacca, Rafael Poyatos, Diego G. Miralles, Tarek S. El-Madany, Marta Galvagno, Arnaud Carrara, Nicola Arriga, Andreas Ibrom, Ivan Mammarella, Dario Papale, Jamie R. Cleverly, Michael Liddell, Georg Wohlfahrt, Christian Markwitz, Matthias Mauder, Eugenie Paul-Limoges, Marius Schmidt, Sebastian Wolf, Christian Brümmer, M. Altaf Arain, Silvano Fares, Tomomichi Kato, Jonas Ardö, Walter Oechel, Chad Hanson, Mika Korkiakoski, Sébastien Biraud, Rainer Steinbrecher, Dave Billesbach, Leonardo Montagnani, William Woodgate, Changliang Shao, Nuno Carvalhais, Markus Reichstein, Jacob A. Nelson

Department of Agricultural and Biological Systems Engineering: Faculty Publications

While the eddy covariance (EC) technique is a well-established method for measuring water fluxes (i.e., evaporation or 'evapotranspiration’, ET), the measurement is susceptible to many uncertainties. One such issue is the potential underestimation of ET when relative humidity (RH) is high (>70%), due to low-pass filtering with some EC systems. Yet, this underestimation for different types of EC systems (e.g. open-path or closed-path sensors) has not been characterized for synthesis datasets such as the widely used FLUXNET2015 dataset. Here, we assess the RH-associated underestimation of latent heat fluxes (LE, or ET) from different EC systems for 163 sites in …


Assessment Of Ring-Tailed Lemur Lemur Catta Populations In South-Western Madagascar, Sylvain Randrianjaka, Samantha Calkins, Timothy M. Sefczek, Cynthia L. Frasier, Richard Randriamampionona, Jean Claude Rakotoniaina, Lily-Arison R. De Roland, Andrea L. Baden, Edward E. Louis Jr. Feb 2023

Assessment Of Ring-Tailed Lemur Lemur Catta Populations In South-Western Madagascar, Sylvain Randrianjaka, Samantha Calkins, Timothy M. Sefczek, Cynthia L. Frasier, Richard Randriamampionona, Jean Claude Rakotoniaina, Lily-Arison R. De Roland, Andrea L. Baden, Edward E. Louis Jr.

School of Global Integrative Studies: Faculty Publications

Anthropogenic activities are negatively affecting the flora and fauna of Madagascar, including its Endangered flagship lemur species, the ring-tailed lemur Lemur catta. Population numbers at some sites are rapidly declining, yet much of the species’ habitat is insufficiently surveyed. Because widespread population assessments are critical to guiding conservation management strategies, additional data are needed to monitor L. catta population trends and to identify the limits of their geographical range. Here we report survey results confirming the presence of this species at 65 of 83 sites in southern and south-western Madagascar, including three subpopulations that were previously considered likely to …


Soybean Seed Protein Concentration Is Limited By Nitrogen Supply In Tropical And Subtropical Environments In Brazil, E. H. Figueiredo Moura Da Silva, N. Cafaro La Menza, G. G. Munareto, A. J. Zanon, Santos Carvalho, F. R. Marin Feb 2023

Soybean Seed Protein Concentration Is Limited By Nitrogen Supply In Tropical And Subtropical Environments In Brazil, E. H. Figueiredo Moura Da Silva, N. Cafaro La Menza, G. G. Munareto, A. J. Zanon, Santos Carvalho, F. R. Marin

Department of Agronomy and Horticulture: Faculty Publications

Soybean production contributes to ca. 60% of global plant-based protein used for food and feed. Brazil is the largest soybean producer and exporter, with 60% from tropical and 40% from subtropical environments. Nitrogen (N) can play an essential role in the storage of proteins in seeds; thus, it could be a key factor in increasing the quantity and quality of seeds in high-yielding soybean crops. Unlike in temperate environments, there is a gap of knowledge on whether soybean grown under tropical and subtropical climates are limited by N-fertilization to sustain the seed yield increase without detriments in seed protein concentration. …


Teaching With Collective Resilience During Covid-19: Korean Teachers And Collaborative Professionalism, Minseok Yang, Yujin Oh, Sunbin Lim, Taeyeon Kim Feb 2023

Teaching With Collective Resilience During Covid-19: Korean Teachers And Collaborative Professionalism, Minseok Yang, Yujin Oh, Sunbin Lim, Taeyeon Kim

Department of Teaching, Learning, and Teacher Education: Faculty Publications

This study applies system-focused resilience and collaborative professionalism to examine how teachers in Korea collectively developed resilience and transformed teaching during COVID-19. Using qualitative data from seven individual interviews and four focus groups, we found Korean teachers navigated complex challenges (rapidly changing policies, online teaching, exacerbated learning gaps, and excessive social pressure) and utilized contextual resources (collective autonomy and flexibility, solidity and solidarity, and collective responsibility) to develop strategies (collaborative inquiry, timely communication, and envisioning the future of schooling). The study extends teacher resilience toward more collective and communal, from the individual level, by linking resilience to collaborative systemic changes. …


New Synonyms And Records Of Costa Rican And Panamanian Dung Beetles (Coleoptera: Scarabaeidae: Scarabaeinae), Ángel Solis, Bert Kohlmann Feb 2023

New Synonyms And Records Of Costa Rican And Panamanian Dung Beetles (Coleoptera: Scarabaeidae: Scarabaeinae), Ángel Solis, Bert Kohlmann

Insecta Mundi

To better understand the dung beetle (Coleoptera: Scarabaeidae: Scarabaeinae) biodiversity of Costa Rica and Panama, new synonyms, records, distributions, and updates are presented. This paper analyzes the distribution and taxonomy of Phanaeus olsoufieffi Balthasar, 1939 in Panama and establishes the following new subjective synonym: Phanaeus panamensis Moctezuma and Halffter, 2021 = Phanaeus olsoufieffi Balthasar, 1939. Color morphs of Phanaeus pyrois Bates, 1887 in Costa Rica are analyzed. The Costa Rican distribution of Onthophagus bidentatus Drapiez, 1819 and O. marginicollis Harold, 1880 is stud­ied. Onthophagus bidentatus is recorded for Costa Rica for the first time. A population analysis of barcode mtDNA, …


Decomposition Rate As An Emergent Property Of Optimal Microbial Foraging, Stefano Manzoni, Arjun Chakrawal, Glenn Ledder Feb 2023

Decomposition Rate As An Emergent Property Of Optimal Microbial Foraging, Stefano Manzoni, Arjun Chakrawal, Glenn Ledder

Department of Mathematics: Faculty Publications

Decomposition kinetics are fundamental for quantifying carbon and nutrient cycling in terrestrial and aquatic ecosystems. Several theories have been proposed to construct process-based kinetics laws, but most of these theories do not consider that microbial decomposers can adapt to environmental conditions, thereby modulating decomposition. Starting from the assumption that a homogeneous microbial community maximizes its growth rate over the period of decomposition, we formalize decomposition as an optimal control problem where the decomposition rate is a control variable. When maintenance respiration is negligible, we find that the optimal decomposition kinetics scale as the square root of the substrate concentration, resulting …


The Waxy Mutation In Sorghum And Other Cereal Grains Reshapes The Gut Microbiome By Reducing Levels Of Multiple Beneficial Species, Qinnan Yang, Mallory J. Suhr Van Haute, Scott E. Sattler, Devin J. Rose, Anthony Juritsch, Jing Shao, Kristin A. Beede, Robert J. Schmaltz, Jeff Price, John Toy, Amanda E. Ramer-Tait, Andrew K. Benson Feb 2023

The Waxy Mutation In Sorghum And Other Cereal Grains Reshapes The Gut Microbiome By Reducing Levels Of Multiple Beneficial Species, Qinnan Yang, Mallory J. Suhr Van Haute, Scott E. Sattler, Devin J. Rose, Anthony Juritsch, Jing Shao, Kristin A. Beede, Robert J. Schmaltz, Jeff Price, John Toy, Amanda E. Ramer-Tait, Andrew K. Benson

Department of Food Science and Technology: Faculty Publications

Waxy starches from cereal grains contain >90% amylopectin due to naturally occurring mutations that block amylose biosynthesis. Waxy starches have unique organoleptic characteristics (e.g. sticky rice) as well as desirable physicochemical properties for food processing. Using isogenic pairs of wild type sorghum lines and their waxy derivatives, we studied the effects of waxy starches in the whole grain context on the human gut microbiome. In vitro fermentations with human stool microbiomes show that beneficial taxonomic and metabolic signatures driven by grain from wild type parental lines are lost in fermentations of grain from the waxy derivatives and the beneficial signatures …


Optimal Stomatal Theory Predicts Co2 Responses Of Stomatal Conductance In Both Gymnosperm And Angiosperm Trees, Anna Gardner, Mingkai Jiang, David S. Ellsworth, A. Robert Mackenzie, Jeremy Pritchard, Martin Karl Friedrich Bader, Craig V.M. Barton, Carl Bernacchi, Carlo Calfapietra, Kristine Y. Crous, Mirindi Eric Dusenge, Teresa E. Gimeno, Marianne Hall, Shubhangi Lamba, Sebastian Leuzinger, Johan Uddling, Jeffrey Warren, Göran Wallin, Belinda E. Medlyn Feb 2023

Optimal Stomatal Theory Predicts Co2 Responses Of Stomatal Conductance In Both Gymnosperm And Angiosperm Trees, Anna Gardner, Mingkai Jiang, David S. Ellsworth, A. Robert Mackenzie, Jeremy Pritchard, Martin Karl Friedrich Bader, Craig V.M. Barton, Carl Bernacchi, Carlo Calfapietra, Kristine Y. Crous, Mirindi Eric Dusenge, Teresa E. Gimeno, Marianne Hall, Shubhangi Lamba, Sebastian Leuzinger, Johan Uddling, Jeffrey Warren, Göran Wallin, Belinda E. Medlyn

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Optimal stomatal theory predicts that stomata operate to maximise photosynthesis (Anet) and minimise transpirational water loss to achieve optimal intrinsic water-use efficiency (iWUE). We tested whether this theory can predict stomatal responses to elevated atmospheric CO2 (eCO2), and whether it can capture differences in responsiveness among woody plant functional types (PFTs). We conducted a meta-analysis of tree studies of the effect of eCO2 on iWUE and its components Anet and stomatal conductance (gs). We compared three PFTs, using the unified stomatal optimisation (USO) model to account for confounding effects of leaf–air vapour pressure difference (D). We expected smaller gs, but …


Amicus Brief - Eggers V. Evnen, No. 22-2268, 8th Circuit, August 2, 2022, Anthony Schutz Jan 2023

Amicus Brief - Eggers V. Evnen, No. 22-2268, 8th Circuit, August 2, 2022, Anthony Schutz

Nebraska State Constitution

Because Nebraska’s constitutional provision for direct democracy involves voting and the exercise of the People’s legislative authority, it is subject to the principles of Reynolds v. Sims and the Fourteenth Amendment to the U.S. Constitution. This understanding of the People’s power of initiative and referendum as legislative is supported by Nebraska history, as is the severability of the two-fifths, county-distribution requirement from Article III, § 2 of the Nebraska Constitution. The county-distribution requirement fails the one-person-one-vote constraint placed upon States by the federal constitution. As a matter of statistical analysis, that requirement gives more power to voters in counties with …


A Draft Diabrotica Virgifera Virgifera Genome: Insights Into Control And Host Plant Adaption By A Major Maize Pest Insect, Brad S. Coates, Kimberly K. O. Walden, Dimpal Lata, Neetha Nanoth Vellichirammal, Robert F. Mitchell, Martin N. Andersson, Rachel Mckay, Marcé D. Lorenzen, Nathaniel Grubbs, Yu‑Hui Wang, Jinlong Han, Jing Li Xuan, Peter Willadsen, Huichun Wang, B. Wade French, Raman Bansal, Sammy Sedky, Dariane Souza, Dakota Bunn, Lance J. Meinke, Nicholas J. Miller, Blair D. Siegfried11,, Thomas W. Sappington, Hugh M. Robertson Jan 2023

A Draft Diabrotica Virgifera Virgifera Genome: Insights Into Control And Host Plant Adaption By A Major Maize Pest Insect, Brad S. Coates, Kimberly K. O. Walden, Dimpal Lata, Neetha Nanoth Vellichirammal, Robert F. Mitchell, Martin N. Andersson, Rachel Mckay, Marcé D. Lorenzen, Nathaniel Grubbs, Yu‑Hui Wang, Jinlong Han, Jing Li Xuan, Peter Willadsen, Huichun Wang, B. Wade French, Raman Bansal, Sammy Sedky, Dariane Souza, Dakota Bunn, Lance J. Meinke, Nicholas J. Miller, Blair D. Siegfried11,, Thomas W. Sappington, Hugh M. Robertson

Department of Entomology: Faculty Publications

Background Adaptations by arthropod pests to host plant defenses of crops determine their impacts on agricultural production. The larval host range of western corn rootworm, Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae), is restricted to maize and a few grasses. Resistance of D. v. virgifera to crop rotation practices and multiple insecticides contributes to its status as the most damaging pest of cultivated maize in North America and Europe. The extent to which adaptations by this pest contributes to host plant specialization remains unknown.

Results A 2.42 Gb draft D. v. virgifera genome, Dvir_v2.0, was assembled from short shotgun reads and scaffolded …


“The Drug Sellerswere Better Organized Than The Government”: A Qualitative Study Of Participants’ Views Of Drug Markets During Covid-19 And Other Big Events, Roberto Abadie Jan 2023

“The Drug Sellerswere Better Organized Than The Government”: A Qualitative Study Of Participants’ Views Of Drug Markets During Covid-19 And Other Big Events, Roberto Abadie

School of Global Integrative Studies: Faculty Publications

“Big events”, such as wars, economic crises, pandemics, or natural disasters, affect the risk environment in which people use drugs. While the impact of big events on injection risk behaviors and access to drug-treatment services is well documented, less is known about the effects of big events on drug markets. Based on self-reporting data on drug availability among people who use drugs (PWUD) in the aftermath of Hurricane Maria in Puerto Rico and during the COVID- 19 lockdown in a Midwestern US state, this study aims to document the effects of big events on drug markets. Qualitative data on the …


Boundary Spanning In The Context Of Stakeholder Engagement In Collaborative Water Management, Mark E. Burbach, Weston M. Eaton, Jodi L. Delozier Jan 2023

Boundary Spanning In The Context Of Stakeholder Engagement In Collaborative Water Management, Mark E. Burbach, Weston M. Eaton, Jodi L. Delozier

School of Natural Resources: Faculty Publications

Boundary spanners are individuals able to reach across organizational borders to build relationships and interconnections to help better manage complex problems. What is not clear, however, are the skills that allow boundary spanners to cross diverse scales, sectors, and organizations. To address this gap, we use a qualitative case study approach to examine evidence for how boundary spanning skills are implemented in the context of stakeholder engagement for addressing water challenges in agricultural settings. We employ a hybrid deductive-inductive thematic analysis approach to examine interview data collected with 25 stakeholder participants as well as direct observation of engagement behavior. Interview …