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2023

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Articles 181 - 210 of 449

Full-Text Articles in Natural Resources Management and Policy

Ecological And Environmental Changes And Protection Measures Of Lakes In China, Ganlin Zhang, Xiaohong Gu, Tao Zhao, Yunlin Zhang, Ligang Xu Mar 2023

Ecological And Environmental Changes And Protection Measures Of Lakes In China, Ganlin Zhang, Xiaohong Gu, Tao Zhao, Yunlin Zhang, Ligang Xu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Lakes (including artificial reservoirs) are important surface water resources, and they are also an important part of the earth surface system consisting of "mountains, waters, forests, fields, lakes, grassland and desert". Based on the lake survey data and long-term monitoring data collected by the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences as well as other institutions, this paper systematically analyzed the overall status and long-term trends of the ecological and environmental changes of natural and artificial lakes in China, focused on the ecological and environmental status and changes of typical lakes in the five major lake zones …

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Achievement Of Wetland Protection And Restoration And Development Strategies In China, Hui Zhu, Haitao Wu, Xiaoxu Xing, Tian Xie, Changchun Song, Guodong Wang, Ming Jiang Mar 2023

Achievement Of Wetland Protection And Restoration And Development Strategies In China, Hui Zhu, Haitao Wu, Xiaoxu Xing, Tian Xie, Changchun Song, Guodong Wang, Ming Jiang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Wetland provides various ecological functions, and wetland protection and restoration directly affect national security, sustainability of economy and society, as well as human well-being. This study has systematically summarized the current status of wetland resource and the achievement of wetland protection in China, and the conclusions will provide scientific support for the policy making in wetland protection and management. The area of wetland in China was 41.2×104 km2 based on remote sensing monitoring in 2020, which lead the first in Asia. Since the 18th National Congress of the Communist Party of China (CPC), the area of wetland has showed a …

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Changes And Protection Suggestions In Water Resources And Ecological Environment In Arid Region Of Northwest China, Yaning Chen, Zhongqin Li, Jianhua Xu, Yanjun Shen, Xiaoxu Xing, Tian Xie, Zhi Li, Linshan Yang, Haiyan Xi, Chenggang Zhu, Gonghuan Fang, Jianhua Si, Yuanming Zhang Mar 2023

Changes And Protection Suggestions In Water Resources And Ecological Environment In Arid Region Of Northwest China, Yaning Chen, Zhongqin Li, Jianhua Xu, Yanjun Shen, Xiaoxu Xing, Tian Xie, Zhi Li, Linshan Yang, Haiyan Xi, Chenggang Zhu, Gonghuan Fang, Jianhua Si, Yuanming Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The arid region of Northwest China is one of the driest regions in the world and is characterized with severe water scarcity. Water shortage is the most critical natural factor limiting the high-quality economic and social development and ecological security in the arid region of Northwest China. Based on the long-term monitoring data from the field stations of Chinese Academy of Sciences, observation data of meteorological stations, water resources bulletin and the remote sensing data, this study systematically analyzes the basic characteristics of water resources and ecological environment in the arid region of Northwest China, assesses the changing trends of …

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Thoughts And Suggestions On Oasis Ecological Construction And Agricultural Development In Hexi Corridor, Wenzhi Zhao, Heng Ren, Jun Du, Rong Yang, Qiyue Yang, Hu Liu Mar 2023

Thoughts And Suggestions On Oasis Ecological Construction And Agricultural Development In Hexi Corridor, Wenzhi Zhao, Heng Ren, Jun Du, Rong Yang, Qiyue Yang, Hu Liu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Oasisization is an external manifestation of the temporal and spatial evolution of oasis in arid areas, and the regional water carrying capacity is the key to restricting oasis agriculture and ecological protection in arid areas. The Hexi Corridor is not only an important passage from the east to the west in China, but also an important carrier of regional development; it is not only an important ecological barrier in Northwest China, but also a typical irrigated agricultural area. After more than 60 years of construction, the Hexi Corridor has made remarkable achievements in social progress, traffic conditions, ecological construction and …

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Status Quo Of Research And Suggestions On Reduction Of Non-Co2 Greenhouse Gas Emission From Chinese Farmland, Guangbin Zhang, Jing Ma, Hua Xu, Xiaoyuan Yan Mar 2023

Status Quo Of Research And Suggestions On Reduction Of Non-Co2 Greenhouse Gas Emission From Chinese Farmland, Guangbin Zhang, Jing Ma, Hua Xu, Xiaoyuan Yan

Bulletin of Chinese Academy of Sciences (Chinese Version)

The mitigation of greenhouse gas (GHG) emissions is of great significance for controlling global warming. In 2014, the CH4 and N2O emissions from farmland accounted for 4.3% of the total GHG emissions in China. After the carbon peak target in 2030, fossil energy in China will be gradually replaced by clean energy, and then the contribution of CH4 and N2O emissions from farmland will be enlarged, leaving that the urgency and importance of emission reduction becomes increasingly prominent. However, available technologies of emission mitigation have not been fully adopted and promoted due to the …

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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 …

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Allocation Of U.S. Biomass Production To Food, Feed, Fiber, Fuel And Exports, Christopher L. Lant, Suman Paudel, Kaeli Mueller, Grace Larson, Gustavo A. Ovando-Montejo, Jennifer E. Givens Mar 2023

Allocation Of U.S. Biomass Production To Food, Feed, Fiber, Fuel And Exports, Christopher L. Lant, Suman Paudel, Kaeli Mueller, Grace Larson, Gustavo A. Ovando-Montejo, Jennifer E. Givens

Environment and Society Faculty Publications

This paper analyzes the end uses—food, feed, fiber, fuel, and exports—of biomass production in the U.S. in 1997, 2002, 2007, and 2012. They are also analyzed at the state level in 2012. Biomass production is measured as human appropriation of net primary production (HANPP), an ecological footprint measured as carbon fixed through photosynthesis, derived from data on crop, timber and grazing yields. HANPP was allocated to end uses using publicly available sources from the U.S. Department of Agriculture and internet-based sources publishing data on agricultural trade. HANPP was 717–834 megatons (MT) of carbon per year, which comprised 515–615 MT of …

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Lpa Guide To Environmental Hurdles, Sarah Everhart, Briana Hope Mar 2023

Lpa Guide To Environmental Hurdles, Sarah Everhart, Briana Hope

Purdue Road School

Compliance with the National Environmental Policy Act (NEPA) is a federal requirement when utilizing federal funding for transportation projects. Attendees will learn about environmental hurdles, common schedule challenges, that can be encountered in a project and how to best mange them. Specifically, Section 106 (cultural resources), T&E species, 4(f), Public Involvement, and Environmental Justice.

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Drought Affects Sex Ratio And Growth Of Painted Turtles In A Long-Term Study In Nebraska, Larkin A. Powell, Ellen P. Dolph, Charrissa R. Neil Mar 2023

Drought Affects Sex Ratio And Growth Of Painted Turtles In A Long-Term Study In Nebraska, Larkin A. Powell, Ellen P. Dolph, Charrissa R. Neil

School of Natural Resources: Faculty Publications

Climate forecasts suggest the Great Plains of North America have increased risk of droughts during global warming. Environmental factors have potential to influence turtle populations in aquatic habitats through temperature-dependent sex determination and influences on food availability. Long-term studies are critical to evaluate the influence of climatic variation on turtles. We used a 12-year set of mark-recapture data collected from painted turtles (Chrysemys picta, n = 162) in a pond in Keith County, Nebraska during 2005–2016 to assess variation in sex ratio and growth dynamics. Southwest Nebraska experienced two periods of drought during our study (Palmer Hydrologic Drought …

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Fallacies In The Design Of Climate Change Policies: A Response To Richard Epstein, Richard L. Revesz Mar 2023

Fallacies In The Design Of Climate Change Policies: A Response To Richard Epstein, Richard L. Revesz

Texas A&M Law Review

This Essay criticizes Professor Richard Epstein’s approach to climate change regulation, which he characterizes as one involving taking modest steps at first, observing the results of these steps, and then using the lessons learned to inform the next steps. Epstein’s approach depends critically on a particular class of damage function determining how greenhouse gas emissions cause harm—specifically, damage functions that lack discontinuities. And it also depends on the ability to observe in real time how the function occurs. Neither of these conditions are met with respect to climate change. The Essay also shows that Epstein’s approach is further undermined by …

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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 …

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How The Covid-19 Pandemic Changed Patterns Of Green Infrastructure Use: A Scoping Review, Amanda Bristowe, Megan Heckert Mar 2023

How The Covid-19 Pandemic Changed Patterns Of Green Infrastructure Use: A Scoping Review, Amanda Bristowe, Megan Heckert

Geography & Planning Faculty Publications

The use of green infrastructure (GI) has been established as a way to alleviate stress and the COVID-19 pandemic has placed a new emphasis on the importance of GI as both a coping mechanism and a source of recreation. This scoping review seeks to address whether the COVID-19 pandemic affected the use of GI, specifically the ways in which the pandemic altered visitation patterns and the frequency of the use of GI. This review identifies studies that explore the relationship between the COVID-19 pandemic and GI use and assesses whether the pandemic has altered the use of GI, including whether …

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Gloria - A Globally Representative Hyperspectral In Situ Dataset For Optical Sensing Of Water Quality, Moritz K. Lehmann Feb 2023

Gloria - A Globally Representative Hyperspectral In Situ Dataset For Optical Sensing Of Water Quality, Moritz K. Lehmann

School of Natural Resources: Faculty Publications

The development of algorithms for remote sensing of water quality (RSWQ) requires a large amount of in situ data to account for the bio-geo-optical diversity of inland and coastal waters. The GLObal Reflectance community dataset for Imaging and optical sensing of Aquatic environments (GLORIA) includes 7,572 curated hyperspectral remote sensing reflectance measurements at 1nm intervals within the 350 to 900nm wavelength range. In addition, at least one co-located water quality measurement of chlorophyll α, total suspended solids, absorption by dissolved substances, and Secchi depth, is provided. The data were contributed by researchers affiliated with 59 institutions worldwide and come from …

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The Ecology Of Human-Caused Mortality For A Protected Large Carnivore, John F. Benson, Kyle D. Dougherty, Paul Beier, Walter M. Boyce, Bogdan Cristescu, Daniel J. Gammons, David K. Garcelon, J. Mark Higley, Quinton E. Martins, Anna C. Nisi, Seth P. D. Riley, Jeff A. Sikich, Thomas R. Stephenson, T. Winston Vickers, Greta M. Wengert, Christopher C. Wilmers, Heiko U. Wittmer, Justin A. Dellinger Feb 2023

The Ecology Of Human-Caused Mortality For A Protected Large Carnivore, John F. Benson, Kyle D. Dougherty, Paul Beier, Walter M. Boyce, Bogdan Cristescu, Daniel J. Gammons, David K. Garcelon, J. Mark Higley, Quinton E. Martins, Anna C. Nisi, Seth P. D. Riley, Jeff A. Sikich, Thomas R. Stephenson, T. Winston Vickers, Greta M. Wengert, Christopher C. Wilmers, Heiko U. Wittmer, Justin A. Dellinger

School of Natural Resources: Faculty Publications

Mitigating human-caused mortality for large carnivores is a pressing global challenge for wildlife conservation. However, mortality is almost exclusively studied at local (within-population) scales creating a mismatch between our understanding of risk and the spatial extent most relevant to conservation and management of wide-ranging species. Here, we quantified mortality for 590 radio-collared mountain lions statewide across their distribution in California to identify drivers of human-caused mortality and investigate whether human-caused mortality is additive or compensatory. Human-caused mortality, primarily from conflict management and vehicles, exceeded natural mortality despite mountain lions being protected from hunting. Our data indicate that human-caused mortality is …

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Occupancy And Abundance Of A West African Mangabey Species (Cercocebus Atys Audebert, 1797) In Forest Patch Habitat, Kellie Laity, April Conway, Sonia M. Hernandez, John P. Carroll, Dessalegn Ejigu Feb 2023

Occupancy And Abundance Of A West African Mangabey Species (Cercocebus Atys Audebert, 1797) In Forest Patch Habitat, Kellie Laity, April Conway, Sonia M. Hernandez, John P. Carroll, Dessalegn Ejigu

School of Natural Resources: Faculty Publications

Sooty mangabeys are Old World primates from the Upper Guinea Rainforests of West Africa. They suffer from habitat degradation due to deforestation and hunting for the bush-meat trade. Tiwai Island and adjacent small islands are a small protected area surrounded by the Moa River that is known for its high diversity of primate species. We evaluated the occupancy and abundance of sooty mangabeys on Tiwai Island and the surrounding islands using camera traps during 2008–2011. Over two seasons, we obtained a naïve occupancy rate of 0.77 for Tiwai Island but only 0.19 for surrounding smaller islands. We used Abundance-Induced Heterogeneity …

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Drought Stress Prediction And Propagation Using Time Series Modeling On Multimodal Plant Image Sequences, Sruti Das Choudhury, Sinjoy Saha, Ashok Samal, Anastasios Mazis, Tala Awada Feb 2023

Drought Stress Prediction And Propagation Using Time Series Modeling On Multimodal Plant Image Sequences, Sruti Das Choudhury, Sinjoy Saha, Ashok Samal, Anastasios Mazis, Tala Awada

School of Natural Resources: Faculty Publications

The paper introduces two novel algorithms for predicting and propagating drought stress in plants using image sequences captured by cameras in two modalities, i.e., visible light and hyperspectral. The first algorithm, VisStressPredict, computes a time series of holistic phenotypes, e.g., height, biomass, and size, by analyzing image sequences captured by a visible light camera at discrete time intervals and then adapts dynamic time warping (DTW), a technique for measuring similarity between temporal sequences for dynamic phenotypic analysis, to predict the onset of drought stress. The second algorithm, HyperStressPropagateNet, leverages a deep neural network for temporal stress propagation using hyperspectral imagery. …

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Rhino Conservation In Africa, Andrew N. Rowan Feb 2023

Rhino Conservation In Africa, Andrew N. Rowan

WellBeing News

The recovery of white rhinos from a small population of 20 animals in 1895 to tens of thousands today is a major conservation success story, but we are again facing a rapid decline in the numbers of both species of African rhinoceros due mainly to poaching. Demand for rhino horn, mainly from the Far East, has led to an epidemic of poaching. The healthy population of white rhinos in South Africa’s Kruger National Park has fallen from just under 12,000 individuals in 2010 to around 2,200 in 2022. At the current rate of decline, white rhinos will be eliminated from …

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Sexual Selection As A Tool To Improve Student Reasoning Of Evolution, Sarah K. Spier, Joseph Dauer Feb 2023

Sexual Selection As A Tool To Improve Student Reasoning Of Evolution, Sarah K. Spier, Joseph Dauer

School of Natural Resources: Faculty Publications

There is an emphasis on survival-based selection in biology education that can allow students to neglect other important evolutionary components, such as sexual selection, reproduction, and inheritance. Student understanding of the role of reproduction in evolution is as important as student understanding of the role of survival. Limiting instruction to survival- based scenarios (e.g., effect of food on Galapagos finch beak shape) may not provide students with enough context to guide them to complete evolutionary reasoning. Different selection forces can work in concert or oppose one another, and sexual selection can lead to the selection of trait variants that are …

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Trophically Integrated Ecometric Models As Tools For Demonstrating Spatial And Temporal Functional Changes In Mammal Communities, Rachel A. Short, Jenny L. Mcguire, P. David Polly, A. Michelle Lawing Feb 2023

Trophically Integrated Ecometric Models As Tools For Demonstrating Spatial And Temporal Functional Changes In Mammal Communities, Rachel A. Short, Jenny L. Mcguire, P. David Polly, A. Michelle Lawing

Natural Resource Management Faculty Publications

We are in a modern biodiversity crisis that will restructure community compositions and ecological functions globally. Large mammals, important contributors to ecosystem function, have been affected directly by purposeful extermination and indirectly by climate and land-use changes, yet functional turnover is rarely assessed on a global scale using metrics based on functional traits. Using ecometrics, the study of functional trait distributions and functional turnover, we examine the relationship between vegetation cover and locomotor traits for artiodactyl and carnivoran communities. We show that the ability to detect a functional relationship is strengthened when locomotor traits of both primary consumers (artiodactyls, n …

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Fossil Fuel Divestment In U.S. Higher Education: Endowment Dependence And Temporal Dynamics, Alexander R. Barron, Rachel C. Venator, Ella V.H. Carlson, Jane K. Andrews, Junwen Ding, David Deswert Feb 2023

Fossil Fuel Divestment In U.S. Higher Education: Endowment Dependence And Temporal Dynamics, Alexander R. Barron, Rachel C. Venator, Ella V.H. Carlson, Jane K. Andrews, Junwen Ding, David Deswert

Environmental Science and Policy: Faculty Publications

Since 2012, students and others have pushed U.S. Higher Education Institutions (HEIs) to divest their endowments from fossil fuel producing industries. In the past decade, fossil fuel divestment has become the fastest growing divestment movement in history, with over 140 U.S. HEIs announcing divestment commitments. We conduct a quantitative analysis of the three phases of U.S. 4-year HEI divestment announcements (as well as rejections of divestment) to better understand the dynamics. Announcements began (2012-2017) with a number of schools divesting, followed by a second phase where new divestment announcements slowed. The current phase, which began around 2019, shows a renewed …

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An Evaluation Of Avian Influenza Virus Whole-Genome Sequencing Approaches Using Nanopore Technology, Hon S. Ip, Sarah Uhm, Mary Lea Killian, Mia K. Torchetti Feb 2023

An Evaluation Of Avian Influenza Virus Whole-Genome Sequencing Approaches Using Nanopore Technology, Hon S. Ip, Sarah Uhm, Mary Lea Killian, Mia K. Torchetti

United States Department of Agriculture Wildlife Services: Staff Publications

As exemplified by the global response to the SARS-CoV-2 pandemic, whole-genome sequencing played an important role in monitoring the evolution of novel viral variants and provided guidance on potential antiviral treatments. The recent rapid and extensive introduction and spread of highly pathogenic avian influenza virus in Europe, North America, and elsewhere raises the need for similarly rapid sequencing to aid in appropriate response and mitigation activities. To facilitate this objective, we investigate a next-generation sequencing platform that uses a portable nanopore sequencing device to generate and present data in real time. This platform offers the potential to extend in-house sequencing …

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Assessing Ecosystem Health Through Contaminants In The Tijuana River National Estuarine Research Reserve, Nancy Torres Jan 2023

Assessing Ecosystem Health Through Contaminants In The Tijuana River National Estuarine Research Reserve, Nancy Torres

Theses

Although the Tijuana River Estuary (TRE) remains the largest, most-intact coastal wetland in Southern California, it has a history of major changes, much of this related to its location immediately north of the US / Mexico Border. One of the primary challenges is cross-border flows from the rapidly growing city of Tijuana, Baja California, Mexico, and the delivery of wastewater, debris, and sediment to sensitive coastal wetland ecosystems. There is a need to more fully investigate these environmental changes to assess the ecosystem health of the Tijuana River Estuary over time, especially related to pollution impacts. This can inform an …

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Development Of A Benchmark Eddy Flux Evapotranspiration Dataset For Evaluation Of Satellite-Driven Evapotranspiration Models Over The Conus, John M. Volk, Justin Huntington, Forrest S. Melton, Richard Allen, Martha C. Anderson, Joshua B. Fisher, Ayse Kilic, Gabriel Senay, Gregory Halverson, Kyla Knipper, Blake Minor, Christopher Pearson, Tianxin Wang, Yun Yang, Steven Evett, Andrew N. French, Richard Jasoni, William Kustas Jan 2023

Development Of A Benchmark Eddy Flux Evapotranspiration Dataset For Evaluation Of Satellite-Driven Evapotranspiration Models Over The Conus, John M. Volk, Justin Huntington, Forrest S. Melton, Richard Allen, Martha C. Anderson, Joshua B. Fisher, Ayse Kilic, Gabriel Senay, Gregory Halverson, Kyla Knipper, Blake Minor, Christopher Pearson, Tianxin Wang, Yun Yang, Steven Evett, Andrew N. French, Richard Jasoni, William Kustas

School of Natural Resources: Faculty Publications

A large sample of ground-based evapotranspiration (ET) measurements made in the United States, primarily from eddy covariance systems, were post-processed to produce a benchmark ET dataset. The dataset was produced primarily to support the intercomparison and evaluation of the OpenET satellite-based remote sensing ET (RSET) models and could also be used to evaluate ET data from other models and approaches. OpenET is a web-based service that makes field-delineated and pixel-level ET estimates from well-established RSET models readily available to water managers, agricultural producers, and the public. The benchmark dataset is composed of flux and meteorological data from a variety of …

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Regenerative Agriculture - A Literature Review On The Practices And Mechanisms Used To Improve Soil Health, Ravjit Khangura, David Ferris, Cameron Wagg, Jamie Bowyer Jan 2023

Regenerative Agriculture - A Literature Review On The Practices And Mechanisms Used To Improve Soil Health, Ravjit Khangura, David Ferris, Cameron Wagg, Jamie Bowyer

Natural Resources Research Articles

Conventional farming practices can lead to soil degradation and a decline in productivity. Regenerative agriculture (RA) is purported by advocates as a solution to these issues that focuses on soil health and carbon sequestration. The fundamental principles of RA are to keep the soil covered, minimise soil disturbance, preserve living roots in the soil year round, increase species diversity, integrate livestock, and limit or eliminate the use of synthetic compounds (such as herbicides and fertilisers). The overall objectives are to rejuvenate the soil and land and provide environmental, economic, and social benefits to the wider community. Despite the purported benefits …

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Sediment Transport And Geomorphological Evolution In The Northern Gulf Of Mexico, Kelli Moran Jan 2023

Sediment Transport And Geomorphological Evolution In The Northern Gulf Of Mexico, Kelli Moran

LSU Doctoral Dissertations

This dissertation explores the mechanisms driving sediment transport and deposition on the continental shelf and within the bays of the northern Gulf of Mexico via a suite of geophysical methods and sediment cores on a variety of timescales. This dissertation is comprised of three main chapters, each focusing on a different location, environment, and process but tied together using geophysical survey, a thematic focus on geomorphic change and sediment transport within the deltaic cycle and deltaic plain environments, and the implications this change poses for both past and future sediment transport and environmental change in response to sea level change. …

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Diversity, Distribution, And Methodological Considerations Of Haemosporidian Infections Among Galliformes In Alaska, Faith De Amaral, Robert E. Wilson, Sarah A. Sonsthagen, Ravinder Sehgal Jan 2023

Diversity, Distribution, And Methodological Considerations Of Haemosporidian Infections Among Galliformes In Alaska, Faith De Amaral, Robert E. Wilson, Sarah A. Sonsthagen, Ravinder Sehgal

School of Natural Resources: Faculty Publications

Using samples spanning 10-degrees of latitude in Alaska, we provide the first comparative assessment of avian haemosporidia distribution of Arctic Alaska with subarctic host populations for four species of grouse and three species of ptarmigan (Galliformes). We found a high overall prevalence for at least one haemospordian genus (88%; N = 351/400), with spruce grouse (Canachites canadensis) showing the highest prevalence (100%; N = 54/ 54). Haemoproteus and Plasmodium lineages were only observed within grouse, while Leucocytozoon species were found within both grouse and ptarmigan. Further, different Leucocytozoon lineages were obtained from blood and tissue samples from the …

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National Development And The Sustainability Of Mining In The Atacama Desert, Chile, Dakota Soleil Osgood Jan 2023

National Development And The Sustainability Of Mining In The Atacama Desert, Chile, Dakota Soleil Osgood

Capstone Collection

As climate change continues to intensify on a global scale, efforts have been made to implement renewable energies and progressive technologies. These tools are critical in the shift towards a more sustainable practice, and yet analysis of localized impacts from the development of these mechanisms is inadequate. Chile has been and continues to be a leading country in mineral extraction, with an economic history founded in the mining industry. The establishment of mining in Chile as a progressive tool has aided the social and economic development of the nation. Consequences of mining extraction, however, include intensive environmental degradation, human rights …

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Making Minnesota A Model For Energy Storage Policy, Max Meyer Jan 2023

Making Minnesota A Model For Energy Storage Policy, Max Meyer

Minnesota Journal of Law, Science & Technology

No abstract provided.

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Characteristics Of Anglers And Angling Preferences In Utah: Results From The 2021-2022 Utah Angler Survey, Jordan Smith, Chase C. Lamborn, Will Rempel, Zachary D. Miller Jan 2023

Characteristics Of Anglers And Angling Preferences In Utah: Results From The 2021-2022 Utah Angler Survey, Jordan Smith, Chase C. Lamborn, Will Rempel, Zachary D. Miller

Environment and Society Faculty Publications

In the face of a diminishing resource base and increased demand from anglers, the state of Utah is looking for biologically feasible, economical, and publicly supported solutions to address the angling supply and demand mismatch. Using data from an extensive year-long survey effort, the report details information about the characteristics, behaviors, and preferences of Utah’s licensed. The report also details the types of motivations that are fundamental to the Utah fishing experience. The findings show anglers can be classified by their motivations into five relatively distinct groups – Explorers, Social Anglers, Catch Focused Anglers, Ambivalent Anglers, …

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Habitat Fragmentation Reduces Survival And Drives Source–Sink Dynamics For A Large Carnivore, Anna C. Nisi, John F. Benson, Richard King, Christopher C. Wilmers Jan 2023

Habitat Fragmentation Reduces Survival And Drives Source–Sink Dynamics For A Large Carnivore, Anna C. Nisi, John F. Benson, Richard King, Christopher C. Wilmers

School of Natural Resources: Faculty Publications

Rigorous understanding of how environmental conditions impact population dynamics is essential for species conservation, especially in mixed-use landscapes where source–sink dynamics may be at play. Conservation of large carnivore populations in fragmented, human-dominated landscapes is critical for their long-term persistence. However, living in human-dominated landscapes comes with myriad costs, including direct anthropogenic mortality and sublethal energetic costs. How these costs impact individual fitness and population dynamics are not fully understood, partly due to the difficulty in collecting long-term demographic data for these species. Here, we analyzed an 11-year dataset on puma (Puma concolor) space use, mortality, and reproduction …

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