Open Access. Powered by Scholars. Published by Universities.®

Environmental Studies Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 3241 - 3270 of 9679

Full-Text Articles in Environmental Studies

Data And Information As Our New Transport Infrastructure: An Exploration Into How The Modern Transport System Is Being Shaped By Information Communication Technology, Adam Davidson Sep 2020

Data And Information As Our New Transport Infrastructure: An Exploration Into How The Modern Transport System Is Being Shaped By Information Communication Technology, Adam Davidson

Dissertations, Theses, and Capstone Projects

This dissertation is focuses on the role that data and information has in creating and altering behavior related to transportation. To do so, it lays out a theoretical model of technological transition and then follows it up with three case studies. The theoretical model provides a structure to consider how different actors in our transportation ecosystem – users, firms, policy actors – mix with technological evolution to uphold or incrementally recreate our transportation landscape. The case studies stand on their own to highlight important findings about how data and information are impacting transportation scenarios, but collectively reinforce the theoretical models. …


Locke’S Rebellious Progeny: Phenomenology And Ethics Of Leopardi’S A-Dialectical Materialism, Paolo Pellecchia Sep 2020

Locke’S Rebellious Progeny: Phenomenology And Ethics Of Leopardi’S A-Dialectical Materialism, Paolo Pellecchia

Dissertations, Theses, and Capstone Projects

With this study I reconstruct a genealogy of the a-dialectic materialism that defines the production of 19th-century Italian author Giacomo Leopardi and with which he criticizes canonical metaphysical stances. In this regard, I consider John Locke as the first instance of a philosophical outlook that stands as an alternative to the anthropocentrism demanded by traditional metaphysics. By focusing on An Essay Concerning Human Understanding and its significant influence on Leopardi’s philosophical and aesthetic work, I emphasize how Locke’s system finds a synthetic formulation in the hypothesis, at the time highly contested yet groundbreaking, that matter might be endowed …


Many Forms Of Black Death: Coal Extraction, Transnational Activism And The Value Of Life In Colombia, Oscar H. Pedraza Vargas Sep 2020

Many Forms Of Black Death: Coal Extraction, Transnational Activism And The Value Of Life In Colombia, Oscar H. Pedraza Vargas

Dissertations, Theses, and Capstone Projects

After the murder of the president and vice president of the coal union by paramilitaries in the department of Cesár, Colombia, the union is left adrift. Its fragility is only heightened when the person who decides to take over, is killed six months later. The union has been vocal on their critique of environmental destruction produced by coal and argues that their criticism is part of the reasons why they were targeted. Not far from there, in the department of Guajira, the conglomerate in charge of Cerrejón, the largest open-pit coal mine of South America, wants to divert a creek …


Characterization Of Pm2.5 - Bound Polycyclic Aromatic Hydrocarbons In Chiang Mai, Thailand During Biomass Open Burning Period Of 2016, Duangduean Thepnuan, Somporn Chantara Sep 2020

Characterization Of Pm2.5 - Bound Polycyclic Aromatic Hydrocarbons In Chiang Mai, Thailand During Biomass Open Burning Period Of 2016, Duangduean Thepnuan, Somporn Chantara

Applied Environmental Research

Polycyclic aromatic hydrocarbons (PAHs) bounded to ambient fine particles (PM2.5) were determined for enabling health risk assessment and source identification of ambient aerosols. Daily PM2.5 samples (24 h) were collected on quartz fiber filters by using a low volume air sampler (16.7 L min-1) during smoke haze period (March - April 2016) in Chiang Mai, Thailand. An average concentration of PM2.5(n=54) was 65.3±17.6 μg m-3. The samples were extracted with dichloromethane using ultrasonication prior to PAHs analysis by GC-MS. Average concentrations of 16-PAHs, non-carcinogenic (nc) PAHs and carcinogenic (c) PAHs were 10.23±2.49, 5.48±1.70 and 4.75±1.43 ng m-3, respectively. Ratio values …


Effect Of Mixture Ratio Of Food Waste And Vetiver Grass On Biogas Production, Mayura Srikanlayanukul, Parinda Suksabye Sep 2020

Effect Of Mixture Ratio Of Food Waste And Vetiver Grass On Biogas Production, Mayura Srikanlayanukul, Parinda Suksabye

Applied Environmental Research

The objectives of this research were to study the optimum percentage ratios of food waste and vetiver grass (Vetiveria zizaniodes(L.) Nash) for biogas production and process stability in anaerobic digestion system. The nine mixture ratios of food waste (FM) and vetiver grass (VG) were 100:0, 80:20, 75:25, 66.67:33.33, 50:50, 33.33:66.67, 25:75, 20:80 and 0:100. The biogas production was subjected to anaerobic batch with working volume of 1.8 L and had digestion time 60 d at 35 ± 2 °C. High specific methane yield of 0.30 L g-1 VS removed was obtained from the fermentation at ratio of FW:VG at 80:20 …


Potential Degradation And Kinetics Of Melanoidin By Using Laccase From White Rot Fungus, Wittawat Toomsan, Pinthita Mungkarndee, Sophon Boonlue, Nguyen Thanh Giao, Sumana Siripattanakul-Ratpukdi Sep 2020

Potential Degradation And Kinetics Of Melanoidin By Using Laccase From White Rot Fungus, Wittawat Toomsan, Pinthita Mungkarndee, Sophon Boonlue, Nguyen Thanh Giao, Sumana Siripattanakul-Ratpukdi

Applied Environmental Research

This study was attempted to use laccase extracted from white rot fungus to removemelanoidin in the ethanol production wastewater. The isolated fungus producing the highest laccase was identified as Megaspororiasp. The highest degradation efficiencies of the purified and crude laccases were 48.00% and 44.60%, respectively. Both degradation kinetics well fit Michaelis-Menten model. The Michaelis constant (Km) and maximum rate of reaction (Vmax) were 0.82% melanoidin and 0.0045% melanoidin h-1 for the degradation by the purified laccase and 0.71% melanoidin and 0.0037% melanoidin h-1 for the degradation by the crude laccase. Turnover number (Kcat) of purified and crude laccases were 0.00023 …


Mpirically Derived Equation From Simple Heat Index For Calculating Wet Bulb Globe Temperature: A Case Study Of Thailand, Wutthichai Paengkaew, Atsamon Limsakul, Rittirong Junggoth, Somsak Pitaksanurat Sep 2020

Mpirically Derived Equation From Simple Heat Index For Calculating Wet Bulb Globe Temperature: A Case Study Of Thailand, Wutthichai Paengkaew, Atsamon Limsakul, Rittirong Junggoth, Somsak Pitaksanurat

Applied Environmental Research

The Wet Bulb Globe Temperature (WBGT) index is a standard for assessing environmental heat stress, but the requirement of expensive instrument with specialized maintenance is limited its use. This study aims to develop the empirical equation to estimate the WBGT from Heat Index (HI) calculated from portable temperature and humidity recorder (THR), based on the data collected at seven sites covering all regions of Thailand. Comparative analysis shows that the HI values calculated from THR (HITHR) are consistent well with those measured from the thermal environmental monitor (HIQT36) as evidenced by a highly positive correlation between them (r=0.97; p<0.01; n=4,303). These results suggest high reliability of the portable THR and its acceptance to be used instead of the standard QT36 device. Based on a simple linear regression developed to estimate WBGT from the HITHR, it was found that the model accounts for at least 90% of the variance of the observed WBGT (dependent variable). In addition, validation of the model with the statistical methods shows relatively small errors of the estimated WBGT values in comparisonto the observed values. With this evidence, the developed empirical regression equation can be used to estimate WBGT with high accuracy and confidence. Simple and easier to use for the practitioners who are involved in public health works at community level, a heat monitoring tool kit consisting of a THR, WBGT chart and recommended actions were further developed based on the results obtained. This tool kit is a low-cost and simple device which can be used by various community-level stakeholders to prevent and reduce heat injuries and deaths of risk groups, especially the elderly. This tool is necessary in light of anthropogenic-induced warming and Thailand's aging society.


Assessments Of Nipa Forest Using Landsat Imagery Enhanced With Unmanned Aerial Vehicle Photography, Tantus Piekkoontod, Bhumiphat Pachana, Karnjana Hrimpeng, Kitsanai Charoenjit Sep 2020

Assessments Of Nipa Forest Using Landsat Imagery Enhanced With Unmanned Aerial Vehicle Photography, Tantus Piekkoontod, Bhumiphat Pachana, Karnjana Hrimpeng, Kitsanai Charoenjit

Applied Environmental Research

Nipa palms are exposed by the transformation of land use and land cover changes (LULCC) due to changes to aquaculture and orchards. Modern remote sensing for environmental monitoring of LULCC has been made easier by the use of high spatial resolution images, innovative image processing and Geographic Information Systems (GIS). The expense of high-resolution satellite imagery has resulted in investigators moving to open sources (e.g., Landsat), therefore, the interpretation of images at a medium resolution can be classified simply as LULCC classes and are constrained by the detection of small-scale disturbances. This research applied Landsat imagery with very high-resolution imagery …


Optimizing The Extraction Of Phenolic Compounds With High Antioxidant Activity From Mango Seed Kernel Wastes Using Response Surface Methodology, Francis D.C Siacor, Camila F.Y. Lobarbio, Evelyn B. Taboada Sep 2020

Optimizing The Extraction Of Phenolic Compounds With High Antioxidant Activity From Mango Seed Kernel Wastes Using Response Surface Methodology, Francis D.C Siacor, Camila F.Y. Lobarbio, Evelyn B. Taboada

Applied Environmental Research

Mango seed kernels (MSK), which are waste streams in the mango processing industry, are good sources of phenolic compounds with high antioxidant, anti-bacterial, and anti-viral properties. These phenolic compounds are reported to have an increasing demand over the years in the quest for healthy ready-to-eat food and nutraceuticals. To recover these compounds from MSK, solid-liquid extraction (SLE) can simply be applied, although there is a knowledge gap in the systematic exploration of this process for mango-based phenolic compounds. In this work, phenolic compounds were extracted from MSK through SLE using ethanol-water solvent system. A statistical-based approach was used to evaluate …


Analysis And Modeling Of Physiologic Equivalent Temperature Of An Outdoor Environment, Adinife P. Azodo, Salami O. Ismaila, Femi T. Owoeye, Titus Y. Jibatswen Sep 2020

Analysis And Modeling Of Physiologic Equivalent Temperature Of An Outdoor Environment, Adinife P. Azodo, Salami O. Ismaila, Femi T. Owoeye, Titus Y. Jibatswen

Applied Environmental Research

This study developed a model that depicts the relationship, strength, and direction of the causality between the predictor variables (microclimatic variables) and a response variable (ambient temperature) interpreted for the physiologic equivalent temperature of an environment. Data collected were microclimatic variables which include air circulation, relative humidity, mean radiant and ambient temperatures over land cover materials namely tarmac, grass, soil and concrete at the premises of Federal University Wukari, Taraba state of Nigeria at a guided height of 1.1 m. The data was collected using physical measurements with respect to time of the day; morning (8:00 - 9:00 am), afternoon …


Radar Quality Index For A Mosaic Of Radar Reflectivity Over Chao Phraya River Basin, Thailand, Nattapon Mahavik, Sarintip Tantanee Sep 2020

Radar Quality Index For A Mosaic Of Radar Reflectivity Over Chao Phraya River Basin, Thailand, Nattapon Mahavik, Sarintip Tantanee

Applied Environmental Research

The weather radar is one of the tools that can provide spatio-temporal information for nowcast which is useful for hydro-meteorological disasters warning and mitigation system. The ground-based weather radar can provide spatial and temporal information to monitor severe storm over the risky area. However, the usage of multiple radars can provide more effective information over large study area where single radar beam may be blocked by surrounding terrain Even though, the investigation of the sever storm physical characteristics needs the information from multiple radars, the mosaicked radar product has not been available for Thai researcher yet. In this study, algorithm …


Relationship Between Humidity And Physiology In Warm And Humid Conditions – A Literature Review, Yuliya Dzyuban Sep 2020

Relationship Between Humidity And Physiology In Warm And Humid Conditions – A Literature Review, Yuliya Dzyuban

Research Collection School of Social Sciences

Change in precipitation patterns caused by global warming will likely increase humidity in some areas of the world. Moreover, populations in tropical climates with already high humidity levels can experience an added stress on their health and thermal comfort due to an amplifying effect of heat and moisture. Humidity is a generic term commonly used to describe moisture in the air. However, there are numerous variables that describe different properties of humid air that can be used in scientific studies. While relative humidity remains the most used, it has several shortcomings associated with its high correlation with air temperature. Thus, …


African Wildlife, Eco-Tourism & Covid, Andrew N. Rowan Aug 2020

African Wildlife, Eco-Tourism & Covid, Andrew N. Rowan

WellBeing News

African wildlife conservation faces increasing economic pressure as a result of the loss of tourism due to the pandemic and other looming threats.


Navigation Risk Evaluation Of The Northeast Passage Based On The Entropy Weight Topsis Model, Fengde Qu Aug 2020

Navigation Risk Evaluation Of The Northeast Passage Based On The Entropy Weight Topsis Model, Fengde Qu

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.


Economic Analysis Of Vessel Sox Emission Reduction Measures In The Context Of China, Peng Guan Aug 2020

Economic Analysis Of Vessel Sox Emission Reduction Measures In The Context Of China, Peng Guan

World Maritime University Dissertations

No abstract provided.


The Role Of Cost, Scale, And Property Attributes In Landowner Choice Of Stormwater Management Option., W. Bowman Cutter, Alexander Pusch Aug 2020

The Role Of Cost, Scale, And Property Attributes In Landowner Choice Of Stormwater Management Option., W. Bowman Cutter, Alexander Pusch

Pomona Economics

Cities throughout the world are experimenting with Low Impact Development (LID) strategies to replace ecosystem services degraded by urbanization. Stormwater management may need both centralized/publicly-managed infrastructure and decentralized provision by landowners. For landowners to participate in these programs they will need some latitude in the choice of techniques and siting. However, these landowner choices will affect the bundle of ecosystem services provided (such as infiltration, aesthetics, pollution filtering, and others) as well as their spatial distribution. We studied the Santa Monica (CA) stormwater regulations that require stormwater management on a large portion of development and redevelopment but allow a significant …


An Analysis Of Irrigation Policy In The Mississippi Delta, Brooklyn Mooney Aug 2020

An Analysis Of Irrigation Policy In The Mississippi Delta, Brooklyn Mooney

Honors Theses

This thesis aims to provide a sustainable irrigation alternative that could be easily adopted by farmers in the Mississippi Delta in order to improve water resource management. The Mississippi Alluvial Valley Aquifer, the groundwater system that lies under the Mississippi Delta, is being depleted at rapid rates due to industrial farming and unsustainable, outdated irrigation methods. The intent of this research is to evaluate the water scarcity problem in the Mississippi Delta by assessing water extraction rates and the progression of agriculture in the region. Then, various irrigation methods will be evaluated before a final suggestion is made. Through extensive …


The Effects Of Air Pollution On School Attendance In The United States, Debanhi G. Alrich Aug 2020

The Effects Of Air Pollution On School Attendance In The United States, Debanhi G. Alrich

Theses and Dissertations

This study employs pooled OLS and fixed effect regressions to examine the effects of ambient air pollution on self-reported school attendance in the 423 most populous counties in the United States. Information from the U.S. Census’ American Community Survey’s annual estimate is compared against county-level data for 14 common air pollutant variables. When making this comparison for the general population, we find statistically significant results for only one pollutant: ozone. We find further significant effects for the presence of ozone when respondents are grouped by race/ethnicity and by poverty ratio, indicating that effects of pollution, like many other social ills, …


Environmental Pollution, Karen Davtyan Aug 2020

Environmental Pollution, Karen Davtyan

International Programs

Earth: The home of humanity, the place where we live, where we developing, the matter that feeds us, gives us everything.


How Can Sustainable Building Practices Reduce The Environmental Impact Of Building Activities?, Aaraf Shukur Alqaisi Aug 2020

How Can Sustainable Building Practices Reduce The Environmental Impact Of Building Activities?, Aaraf Shukur Alqaisi

International Programs

Sustainability has been a very important subject lately , Due to the observable change in the environment, which drives us to seek solutions for the current situation. in this poster we will discuss some of the sustainable solutions that aims to reduce the environmental impact that relates to building & construction industry


Paradox In The Bayou: Development And Displacement In America’S Wetlands, Allison Oliver Haertling Aug 2020

Paradox In The Bayou: Development And Displacement In America’S Wetlands, Allison Oliver Haertling

LSU New Orleans Theses and Dissertations

The bayou communities situated at the southern ends of Terrebonne Parish, Louisiana possess a rich and uniquely diverse cultural heritage. However, economic factors, combined with environmental issues such as land loss from oil and gas dredging, subsidence, and rising seas, have spurred significant migration “up the bayou” in recent decades, threatening the loss of these cultures and leaving behind a population that is growing increasingly more vulnerable. This study investigates the current and anticipated social, physical and fiscal impacts of persistent land loss and population decline on lower Terrebonne Parish, as well as planning strategies for maintaining existing infrastructure and …


Assessing Undergraduate Sustainability Knowledge At California Polytechnic State University, Elysa Briens Aug 2020

Assessing Undergraduate Sustainability Knowledge At California Polytechnic State University, Elysa Briens

Master of Science in Environmental Sciences and Management Projects

Sustainability education has become an important focus of many higher education institutions (HEIs), with the inclusion of many sustainability-related learning objectives for undergraduate students. As sustainability is a new, rising discipline, an increasing number of HEIs have made efforts to assess their teaching and learning effectiveness. However, most assessments fall short in determining the relationship between sustainability curriculum and the impacts on leaning outcomes. Therefore, this study aims to assess the impact of academic setting, specifically of a structured sustainability curriculum, on undergraduate sustainability knowledge, as well as analyze the implications of perceived barriers and opportunities to implementing sustainability into …


Determinants Of The Carbon Footprint Of German Swimmers 2020., Ann-Marie Muehlbauer Aug 2020

Determinants Of The Carbon Footprint Of German Swimmers 2020., Ann-Marie Muehlbauer

Master's Theses

The current climate situation is placing our planet and future generations at risk, which demonstrates the urgency to combat climate change and conduct research to support this effort. Calculating the carbon footprint of active sport participation represents an important opportunity to conduct additional research. This study examined the environmental attitudes and practices of swim club members in Germany. The study had three goals: First, to calculate the total and partial carbon footprint of German swimmers; second, to understand how sport organizations induce participants to engage in pro-environmental behavior; and third, to analyze various factors associated with carbon footprint, such as …


Geology, Soils And Climate Of The Margaret River Wine Region, Peter J. Tille, Angela Stuart-Street, Peter S. Gardiner Aug 2020

Geology, Soils And Climate Of The Margaret River Wine Region, Peter J. Tille, Angela Stuart-Street, Peter S. Gardiner

All other publications

This report is an extract from the broader description and analysis of the Geology, soils and climate of Western Australia's wine regions. It expands on the brief descriptions in the second edition of 'Viticulture' (Coombe & Dry 2004) concerning the soils and landscapes of Western Australia’s main wine growing regions. We have tailored this report extract to the specific needs of the Margaret River wine region. It contains local soil names and soil-landscape zones and systems maps.

The wine industry recognises the importance of giving customers an understanding of the vines’ environment and how that may influence wine character …


Kudos And K.O.M.'S: The Effect Of Strava Use On Evaluations Of Social And Managerial Conditions, Perceptions Of Ecological Impacts, And Mountain Bike Spatial Behavior, Noah E. Creany Aug 2020

Kudos And K.O.M.'S: The Effect Of Strava Use On Evaluations Of Social And Managerial Conditions, Perceptions Of Ecological Impacts, And Mountain Bike Spatial Behavior, Noah E. Creany

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Smartphone based self-tracking fitness applications (apps) like Strava are increasingly becoming a part of recreation experiences in parks and protected areas (PPAs). Recreation research has employed smartphone GPS tracking (SGT) and volunteered geographic information (VGI) to study visitor behavior in PPAs, but little is understood about how smartphones or fitness apps affect visitor perceptions and behavior during their experience.

The first chapter of this thesis is a literature review of recreation survey and behavior research, social-psychology and technology use theory, gamification, and mountain bike social science and recreation-ecology research. The second chapter is formatted for submission to the Journal of …


You Are Resilient: Trauma-Informed, Strengths-Based Treatment For Low-Ses, Urban Youth, Courtney Molina Aug 2020

You Are Resilient: Trauma-Informed, Strengths-Based Treatment For Low-Ses, Urban Youth, Courtney Molina

Dissertations

The focus in this review was to explore the benefits and optimal use of trauma-informed, strengths-based care for the therapeutic treatment of low-socioeconomic status (SES), urban youth. Specific focus was given to evidence-based research on the treatment of emotional and behavioral dysregulation among low-SES, urban youth. The review was guided by the following research questions: How can emotional and behavioral dysregulation be symptoms of trauma among low-SES, urban youth; What makes trauma-informed and strengths-based care optimal for the treatment of low-SES, urban youth with dysregulation; and What are clear guidelines for providing trauma-informed, strengths-based care to low-SES, urban youth with …


Population Status, Threats, And Conservation Of Preuss's Red Colobus (Piliocolobus Preussi) And Other Diurnal Primates In The Ndokbou Forest, Littoral Region, Cameroon, Ruth Bowers-Sword Aug 2020

Population Status, Threats, And Conservation Of Preuss's Red Colobus (Piliocolobus Preussi) And Other Diurnal Primates In The Ndokbou Forest, Littoral Region, Cameroon, Ruth Bowers-Sword

Masters Theses, 2020-current

The Ebo-Makombe-Ndokbou forest block in southwest Cameroon lies within the Gulf of Guinea biodiversity hotspot, characterized by extremely high levels of species richness and endemism, including those of primates. These forests may contain one of the last populations of the Critically Endangered Preuss’s red colobus monkey (Piliocolobus preussi; PRC), which is found only in southeastern Nigeria and western Cameroon. Gun hunting for bushmeat and habitat loss and degradation from logging and agriculture are the main threats to PRC. The conservation status of PRC and other primates in the Ndokbou forest are largely unknown, with most regional research efforts occurring in …


Evaluation Of Best Practices For Urban Water Conservation And Water-Smart Growth Implementation In Utah, J. Ivy Harvey Thomson Aug 2020

Evaluation Of Best Practices For Urban Water Conservation And Water-Smart Growth Implementation In Utah, J. Ivy Harvey Thomson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Policies and programs have been utilized throughout the United States (U.S.) to reduce water use as a strategy to ensure sufficient water supplies for future demand. As governmental leaders and policy makers face increasing freshwater scarcity and supply unpredictability, along with rising costs and decreased federal funding, Best Practices (BPs) in water conservation are increasingly important to facilitate decision-making in choosing which strategies to employ. This project uses policy analysis to review and summarize various BPs, referencing both academic and professional literature. National fixture efficiency standards enacted in 1992 are credited as among the leading factors reducing indoor water use …


Cross-Boundary Stewardship For Wetland Integrity And Resilience In The Greater Rocky Mountain National Park Ecosystem, Meghan K. Tait Aug 2020

Cross-Boundary Stewardship For Wetland Integrity And Resilience In The Greater Rocky Mountain National Park Ecosystem, Meghan K. Tait

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Approximately half of the wetlands in Rocky Mountain National Park (RMNP) are degraded due to human disturbances that often occur beyond park boundaries. Like most protected areas, RMNP is part of a larger ecosystem with critical connections to surrounding lands. Therefore, more effective stewardship of wetlands within RMNP is likely to be achieved through cross-boundary cooperative efforts. Through interviews with wetland stewardship agencies and organizations and an analysis of their wetland plans and policies, barriers and opportunities for cross-boundary stewardship were identified, as well as common structures used to facilitate work across boundaries. Wetlands outside of RMNP are experiencing similar …


Influence Of Forage Diversity And Condensed Tannins On Livestock Foraging Behavior, Production And Environmental Impact, Sebastian P. Lagrange Aug 2020

Influence Of Forage Diversity And Condensed Tannins On Livestock Foraging Behavior, Production And Environmental Impact, Sebastian P. Lagrange

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Eating a combination of forages with different chemistries (i.e., nutrients, beneficial compounds such as tannins) may enhance ruminant nutrition and reduce environmental impacts relative to eating single forages. I explored the influence of offering sheep and cattle all possible combinations of tanniferous (i.e., plants with tannins; birdsfoot trefoil, sainfoin) and non-tanniferous legumes (i.e., plants without tannins; alfalfa) or their monocultures on animal performance, behavior, and methane and nitrogen (N) emissions. Offering choices among these legumes to penned sheep improved intake and diet digestibility relative to feeding monocultures. Mixtures selected by sheep were better digested than mixtures containing equal parts of …