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Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan 2020 University of Arkansas, Fayetteville

Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

The ability to recycle phosphorus (P) from wastewaters could provide a sustainable, continuous source of P that might also help protect surface water quality from P enrichment. The mineral struvite (MgNH4PO4·6H2O) is an understudied material that can be created from Pcontaining wastewater and has been shown to have agricultural fertilizer value. The objective of this study was to evaluate the effects of electrochemically precipitated struvite (ECST), chemically precipitated struvite (Crystal Green; CG), diammonium phosphate (DAP), monoammonium phosphate (MAP), rock phosphate (RP), and triple super phosphate (TSP) on corn (Zea mays) and soybean (Glycine max) response in a 79-day greenhouse ...


Sea Surface Temperature Across The Subarctic North Pacific And Marginal Seas Through The Past 20,000 Years: A Paleoceanographic Synthesis, Catherine V. Davis, Sarah E. Myhre, Curtis Deutsch, Beth Caissie, Summer Praetorius, Marisa Borreggine, Robert Thunell 2020 University of South Carolina

Sea Surface Temperature Across The Subarctic North Pacific And Marginal Seas Through The Past 20,000 Years: A Paleoceanographic Synthesis, Catherine V. Davis, Sarah E. Myhre, Curtis Deutsch, Beth Caissie, Summer Praetorius, Marisa Borreggine, Robert Thunell

Geological and Atmospheric Sciences Publications

Deglacial sea surface conditions in the subarctic North Pacific and marginal seas are the subject of increasing interest in paleoceanography. However, a cohesive picture of near-surface oceanography from which to compare inter and intra-regional variability through the last deglaciation is lacking. We present a synthesis of sea surface temperature covering the open North Pacific and its marginal seas, spanning the past 20 ka using proxy records from foraminiferal calcite (δ18O and Mg/Ca) and coccolithophore alkenones (Uk’37). Sea surface temperature proxies tend to be in agreement through the Holocene, though Uk’37 records are often interpreted as warmer than ...


Teaching With Digital 3d Models Of Minerals And Rocks, Graham DM Andrews, Gabrielle Labishak, Sarah Brown, Shelby L. Isom, Holly Danielle Pettus, Trevor Byers 2020 West Virginia University

Teaching With Digital 3d Models Of Minerals And Rocks, Graham Dm Andrews, Gabrielle Labishak, Sarah Brown, Shelby L. Isom, Holly Danielle Pettus, Trevor Byers

Faculty & Staff Scholarship

The disruption to geoscience curricula due to the COVID-19 pandemic highlights the difficulty of making mineral and rock samples accessible to students online rather than through traditional lab classes. In spring 2020, our community had to adapt rapidly to remote instruction; this transition amplified existing disparities in access to geoscience education but can be a catalyst to increase accessibility and flexibility in instruction permanently. Fortunately, a rich collection of 3D mineral and rock samples is being generated by a community of digital modelers (e.g., Perkins et al., 2019).


Constructing A Time Scale Of Biotic Recovery Across The Cretaceous–Paleogene Boundary, Corral Bluffs, Denver Basin, Colorado, U.S.A., Vincent Isakson, Mark D. Schmitz 2020 Boise State University

Constructing A Time Scale Of Biotic Recovery Across The Cretaceous–Paleogene Boundary, Corral Bluffs, Denver Basin, Colorado, U.S.A., Vincent Isakson, Mark D. Schmitz

Geosciences Faculty Publications and Presentations

The Cretaceous–Paleogene (K–Pg) boundary interval represents one of the most significant mass extinctions and ensuing biotic recoveries in Earth history. Earliest Paleocene fossil mammal faunas corresponding to the Puercan North American Land Mammal Age (NALMA) are thought to be highly endemic and potentially diachronous, necessitating precise chronostratigraphic controls at key fossil localities to constrain recovery dynamics in continental biotas following the K–Pg mass extinction. The Laramide synorgenic sedimentary deposits within the Denver Basin in east-central Colorado preserve one of the most continuous and fossiliferous records of the K–Pg boundary interval in North America. Poor exposure in ...


A Preliminary Exploration Of The Cooling Effect Of Tree Shade In Urban Landscapes, Qiuyan Yu, Wenjie Ji, Ruiliang Pu, Shawn Landry, Michael Acheampong, Jarlath O'Neil-Dunne, Zhibin Ren, Shakhawat H. Tanim 2020 New Mexico State University

A Preliminary Exploration Of The Cooling Effect Of Tree Shade In Urban Landscapes, Qiuyan Yu, Wenjie Ji, Ruiliang Pu, Shawn Landry, Michael Acheampong, Jarlath O'Neil-Dunne, Zhibin Ren, Shakhawat H. Tanim

School of Geosciences Faculty and Staff Publications

Mitigating urban heat island (UHI) effects, especially under climate change, is necessary for the promotion of urban sustainability. Shade is one of the most important functions provided by urban trees for mitigating UHI. However, the cooling effect of tree shade has not been adequately investigated. In this study, we used a simple and straightforward method to quantify the spatial and temporal variation of tree shade and examined its effect on land surface temperature (LST). We used the hillshade function in a geographic information system to quantify the spatiotemporal patterns of tree shade by integrating sun location and tree height. Relationships ...


Application Of Excitation-Emission Matrices To Fluorescent Dye Tracing Of Groundwater Flow, Cayla M. Baughn 2020 Western Kentucky University

Application Of Excitation-Emission Matrices To Fluorescent Dye Tracing Of Groundwater Flow, Cayla M. Baughn

Masters Theses & Specialist Projects

Fluorescent dye tracing of groundwater is a technique employed particularly in carbonate rock karst regions to examine karst hydrology by mapping underground flow paths. It is important to understand the hydrology of karst environments because solutionally-enlarged conduits may allow the rapid influx of contaminants into the groundwater system. Fluorescent dye tracing involves the injection of a fluorescent dye into an appropriate injection site (sinking streams, sinkholes, or even through soil flushed with water) and is followed by sampling at sites where the dye may be recovered (typically springs). Various methods exist by which sampling may occur, but all methods ultimately ...


Dealing With Transitions In Climate, Economic, And Political Conditions In Eurasia, D. S. Ojima, T. Chuluun, S. Temirbekov, T. Riley 2020 Colorado State University

Dealing With Transitions In Climate, Economic, And Political Conditions In Eurasia, D. S. Ojima, T. Chuluun, S. Temirbekov, T. Riley

International Grassland Congress Proceedings

No abstract provided.


Using Microhistological Techiques To Predict Botanical Composition Of Horse Diets On Cool‐Season Grass Pasture, Jesse Ira Morrison, S. Ray Smith, Glen E. Aiken 2020 University of Kentucky

Using Microhistological Techiques To Predict Botanical Composition Of Horse Diets On Cool‐Season Grass Pasture, Jesse Ira Morrison, S. Ray Smith, Glen E. Aiken

International Grassland Congress Proceedings

No abstract provided.


Ecological Pratacultural Construction And Sustainable: Development Strategies In Guizhou, Bentian Mo, Changsong Feng, Xinshi Lu 2020 Beijing Forestry University, China

Ecological Pratacultural Construction And Sustainable: Development Strategies In Guizhou, Bentian Mo, Changsong Feng, Xinshi Lu

International Grassland Congress Proceedings

No abstract provided.


Assessing Resource Condition In Grazing Lands: How Do Different Indicators Compare?, John G. McIvor, C. K. McDonald, Neil D. MacLeod 2020 CSIRO, Australia

Assessing Resource Condition In Grazing Lands: How Do Different Indicators Compare?, John G. Mcivor, C. K. Mcdonald, Neil D. Macleod

International Grassland Congress Proceedings

No abstract provided.


Sustainability Assessment Of Animal Production Systems In The (Sub)Tropics: Review And Prospectson Combining Life Cycle Assessment (Lca) With Other Environmental Impact Assessment Methods, Andrea C. Mayer 2020 ETH Zurich, Switzerland

Sustainability Assessment Of Animal Production Systems In The (Sub)Tropics: Review And Prospectson Combining Life Cycle Assessment (Lca) With Other Environmental Impact Assessment Methods, Andrea C. Mayer

International Grassland Congress Proceedings

No abstract provided.


Combining Agroecological Knowledge And Empirical Knowing To Build Pastoral Management Guidelines Within Multipurpose Land Use, D. Magda, N. Girardet, P. Gascouat, D. Lassalle 2020 INRA, France

Combining Agroecological Knowledge And Empirical Knowing To Build Pastoral Management Guidelines Within Multipurpose Land Use, D. Magda, N. Girardet, P. Gascouat, D. Lassalle

International Grassland Congress Proceedings

No abstract provided.


Biotools: Indicators For Biodiversity Outcomes Of Grazing Practices In The Australian Rangelands, Alexander Kutt, E. P. Vanderduys, I. J. Gordon 2020 CSIRO, Australia

Biotools: Indicators For Biodiversity Outcomes Of Grazing Practices In The Australian Rangelands, Alexander Kutt, E. P. Vanderduys, I. J. Gordon

International Grassland Congress Proceedings

No abstract provided.


Infrared Heater Arrays For Warming Grazingland Field Plots, Bruce A. Kimball, Matthew M. Conley, Shiping Wang, Xingwu Lin, Caiyun Luo, Jack Morgan, David Smith 2020 U.S. Department of Agriculture

Infrared Heater Arrays For Warming Grazingland Field Plots, Bruce A. Kimball, Matthew M. Conley, Shiping Wang, Xingwu Lin, Caiyun Luo, Jack Morgan, David Smith

International Grassland Congress Proceedings

No abstract provided.


A Test Of The Key Resource Hypothesis In The Richtersveld, South Africa, Gareth Hempson, Andrew Illius, Howard Hendricks, Susanne Vetter 2020 University of Edinburgh, UK

A Test Of The Key Resource Hypothesis In The Richtersveld, South Africa, Gareth Hempson, Andrew Illius, Howard Hendricks, Susanne Vetter

International Grassland Congress Proceedings

No abstract provided.


Soil Nutrients As Indicators Of Desertification In Northern Kenya, H. Guyo Roba, Gufu Oba 2020 Norwegian University of Life Sciences, Norway

Soil Nutrients As Indicators Of Desertification In Northern Kenya, H. Guyo Roba, Gufu Oba

International Grassland Congress Proceedings

No abstract provided.


Estimating Pastoral Pressure On Arid Rangelands Taking Into Account Herd Management Practices, Didier Genin, Ali Hanafi 2020 Université de Provence, France

Estimating Pastoral Pressure On Arid Rangelands Taking Into Account Herd Management Practices, Didier Genin, Ali Hanafi

International Grassland Congress Proceedings

No abstract provided.


New Approaches For Coping With Pastoral Risk, M. W. Demment, D. L. Coppock, R. Kaitho 2020 University of California, Davis

New Approaches For Coping With Pastoral Risk, M. W. Demment, D. L. Coppock, R. Kaitho

International Grassland Congress Proceedings

No abstract provided.


Fluorometry--An Evolving Methodology For Range Animal Ecologists, Dean M. Anderson, Gary D. Rayson 2020 U.S. Department of Agriculture

Fluorometry--An Evolving Methodology For Range Animal Ecologists, Dean M. Anderson, Gary D. Rayson

International Grassland Congress Proceedings

No abstract provided.


New Approaches To Measuring The Functional Value Of Biodiversity In Plant Communities, John Connolly, Caroline Brophy, J. A. Finn, Laura Kirwan, A. Lüscher, T. Sebastia, A. Weigelt 2020 University College Dublin, Ireland

New Approaches To Measuring The Functional Value Of Biodiversity In Plant Communities, John Connolly, Caroline Brophy, J. A. Finn, Laura Kirwan, A. Lüscher, T. Sebastia, A. Weigelt

International Grassland Congress Proceedings

No abstract provided.


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