Digital Commons Network^™

Patagonian Aridification At The Onset Of The Mid‐Miocene Climatic Optimum, Robin B. Trayler, Matthew J. Kohn, M. Susana Bargo, José I. Cuitiño, Richard F. Kay, Caroline A. E. Strömberg, Sergio F. Vizcaíno

Geosciences Faculty Publications and Presentations

Fossil‐rich sediments of the Santa Cruz Formation, Patagonia, Argentina, span the initiation of the Miocene Climatic Optimum (MCO), the most recent period of warm and wet conditions in the Cenozoic. These conditions drove the expansion of tropical and subtropical ecosystems to much higher latitudes, with the fossiliferous Santa Cruz Formation recording one of the southernmost examples. We collected new carbon and oxygen isotope compositions of herbivore tooth enamel from fossils ~17.4 to 16.4 Ma in age to investigate ecological and climatic changes across the initiation of the MCO. Enamel δ¹³C values are consistent with a C₃‐dominated …

Agate Fossil Beds National Monument, Paleontological Resources Management Plan (Public Version), Scott Kottkamp, Vincent L. Santucci, Justin S. Tweet, Jessica De Smet, Ellen Stark

United States National Park Service: Publications

Executive Summary

Since Agate Springs Ranch was founded by James H. Cook in 1887, exquisite examples of transitional Miocene mammalian fauna have been found along this stretch of the Niobrara River valley. Collectively these paleontological discoveries, along with the existing archeological and historical Native American collection, were the basis for establishing Agate Fossil Beds National Monument (AGFO) as a unit of the National Park System (NPS). The fossil remains from the Harrison and Anderson Ranch formations span a short, but important, time period within the Miocene Epoch. AGFO has provided science with an intimate look into North American mammalian evolution …

A 23 M.Y. Record Of Low Atmospheric Co2, Ying Cui, Brian A. Schubert, A. Hope Jahren

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Current atmospheric CO2 concentration is known to be higher than it has been during the past ~800 k.y. of Earth history, based on direct measurement of CO2 within ice cores. A comparison to the more ancient past is complicated by a deficit of CO2 proxies that may be applied across very long spans of geologic time. Here, we present a new CO2 record across the past 23 m.y. of Earth history based on the δ¹³C value of terrestrial C3 plant remains, using a method applicable to the entire ~400 m.y. history of C3 photosynthesis on land. Across the …

Strategies For Preparing And Delivering An Effective Online Presentation, Kenneth L. Brown, Claire L. Mcleod

Geology and Environmental Geoscience Faculty Publications

No abstract provided.

Study On Seasonal Change Of Cu In System Of Soil‐Grass‐Livestock On The Meadow Around Qinghai Lake, Xuehui Zhou, Hongshan Yang, Genzhu Chang, Xiaolin Miao, Jishan Chen

IGC Proceedings (1977-2023)

No abstract provided.

Plant Community And Soil Nutrient Characteristics Of Trampling Disturbance In A Kobresia Humilis Community Along The Road In Naqu, Tibet, Jinhua Zhang

IGC Proceedings (1977-2023)

No abstract provided.

Evaluating Airsoft Electric Guns For Control Of Invasive Brown Treesnakes, Adam J. Knox, Björn Lardner, Amy Yackel Adams, Robert N. Reed

United States Geological Survey: Staff Publications

Firearms are often used in lethal control of invasive vertebrates, but safety and regulatory aspects limit the circumstances under which they can be used. During August 2016 at the Brown Treesnake Project laboratory on Guam, we evaluated hobby‐grade Airsoft Electric Guns (AEGs; a lower powered, less‐hazardous, and less‐regulated alternative to firearms) for capture and control of small animals, with specific emphasis on invasive brown treesnakes (Boiga irregularis). Tests of AEGs differing in power with ammunition (plastic pellets) masses ranging from 0.20 to 0.39 g, fired at gelatin blocks from distances of 4, 8, and 12 m, showed that …

Effects Of Grass Growth Stage On Metabolisable Energy Concentration Of Fresh Grass, Tianhai Yan, C. P. Ferris, M. G. Porter, C. S. Mayne

IGC Proceedings (1977-2023)

No abstract provided.

Nitrogen, Phosphorus And Potassium Utilization And Their Nutrient Cycling In A Beef‐Forage Production System, Yusuke Tabata, Masayuki Kitagawa, Kazato Oishi, Hajime Kumagai, Shinichi Kume, Hiroyuki Hirooka

IGC Proceedings (1977-2023)

No abstract provided.

Nitrogen Losses Through Denitrification From A Grazed Pasture As Affected By The Use Of Anitrification Inhibitor, W. Sun, Jiafa Luo, S. Lindsey, Sterwart F. Ledgard

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Grazing On Soil Structure And Consequences For Soil Mechanical And Hydraulic Propertiesin Inner Mongolia, A. Reszkowska, J. Krümmelbein, S. Peth, L. Gan, X. Peng, R. Horn

IGC Proceedings (1977-2023)

No abstract provided.

The Soil Improvement Effect Of Afforestation In Grassland--Take Gegentala Grassland As Example, Zhongju Meng, Yong Gao, Deren Yan

IGC Proceedings (1977-2023)

No abstract provided.

Residue Effects Of Animal Manures On Forage Production And Soil Fertility After Receiving Longterm Of Manure Application, Fu‐Hsing Hsu, Kuoyuan Hong, Chihsin Lu

IGC Proceedings (1977-2023)

No abstract provided.

Biological Ways To Improve The Production Of Forage Pea For Use In The Animal Feed Industry, D. Egamberdieva, L. Gafurova

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Nitrogen Fertilization And Cutting Management On The Chemical Composition Of Panicum Maximum Jacq In West Cameroon, B. Boukila, E. Tedonkeng Pamo, F. Tendonkeng, C. N. Meduke

IGC Proceedings (1977-2023)

No abstract provided.

Chemical Composition Of Panicum Maximum Planted With Different Manure Sources, O. M. Arigbede, Jimoh A. Olanite, Alaba O. Jolaosho, Olufemi S. Onifade, U. Y. Anele, A. O. Amole

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Boron Fertilizer On Density, Growth, Seed Yield And Nutrient Concentrations Of Centrosema Pubescens Grown In Humid Subtropical Areas Of Yunnan In China, Meifen Huang, Zhanxing He, Jiaxiang Kui, Yi Zheng, Ziwei Zhou, Kehui Lin

IGC Proceedings (1977-2023)

No abstract provided.

Proceedings For Conservation Of Fragile Karst Resources, Crawford Hydrology Laboratory, The George Wright Society, Mammoth Cave National Park

Conservation of Fragile Karst Resources Proceedings

A Workshop on Sustainability and Community in support of UNESCO science programs August 18-20, 2020

Foliar Application Of Low Concentrations Of Titanium Dioxide And Zinc Oxide Nanoparticles To The Common Sunflower Under Field Conditions, Marek Kolenčík, Dávid Ernst, Martin Urík, Ľuba Ďurišová, Marek Bujdoš, Martin Šebesta, Edmund Dobročka, Samuel Kšiňan, Ramakanth Illa, Qian Yu, Huan Feng, Ivan Černý, Veronika Holišová, Gabriela Kratošová

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Nano-fertilisers have only recently been introduced to intensify plant production, and there still remains inadequate scientific knowledge on their plant-related effects. This paper therefore compares the effects of two nano-fertilisers on common sunflower production under field conditions. The benefits arising from the foliar application of micronutrient-based zinc oxide fertiliser were compared with those from the titanium dioxide plant-growth enhancer. Both the zinc oxide (ZnO) and titanium dioxide (TiO₂) were delivered by foliar application in nano-size at a concentration of 2.6 mg·L⁻¹. The foliar-applied nanoparticles (NPs) had good crystallinity and a mean size distribution under 30 nm. …

N‐P‐K Balance In A Milk Production System On A C. Nlemfuensis Grassland And A Biomass Bank Of P. Purpureum Ct‐115 Clone, Gustavo Crespo, Idalmis Rodríguez, Omar Martínez

IGC Proceedings (1977-2023)

No abstract provided.

Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza

Computer Information Technology Faculty Publications

In this chapter, novel subsurface soil sensing approaches are presented for monitoring and real-time decision support system applications. The methods, materials, and operational feasibility aspects of soil sensors are explored. The soil sensing techniques covered in this chapter include aerial sensing, in-situ, proximal sensing, and remote sensing. The underlying mechanism used for sensing is also examined as well. The sensor selection and calibration techniques are described in detail. The chapter concludes with discussion of soil sensing challenges.

Decision Agriculture, Abdul Salam, Usman Raza

Computer Information Technology Faculty Publications

In this chapter, the latest developments in the field of decision agriculture are discussed. The practice of management zones in digital agriculture is described for efficient and smart faming. Accordingly, the methodology for delineating management zones is presented. Modeling of decision support systems is explained along with discussion of the issues and challenges in this area. Moreover, the precision agriculture technology is also considered. Moreover, the chapter surveys the state of the decision agriculture technologies in the countries such as Bulgaria, Denmark, France, Israel, Malaysia, Pakistan, United Kingdom, Ukraine, and Sweden. Finally, different field factors such as GPS accuracy and …

Improving The Sustainability And Mitigating Environmental Impacts Of Grazed Grassland, H. J. Di, K. C. Cameron

IGC Proceedings (1977-2023)

No abstract provided.

Effect Of Nitrogen Fertilisation And Cutting Frequency On The Yield And Regrowth Of Panicum Maximum Jacq In West Cameroon, E. Tedonkeng Pamo, B. Boukila, C. N. Meduke, F. Tendonkeng

IGC Proceedings (1977-2023)

No abstract provided.

Intensive Grazing Leads To Degradation And Spatial Homogenization Of Topsoils In Two Major Steppetypes In Inner Mongolia, P. R. China, M. Wiesmeier, M. Steffens, A. Kölbl, I. Kögel-Knabner

IGC Proceedings (1977-2023)

No abstract provided.

Soil Quality Assessment In Rangelands Using A Minimum Data Set, Seyed Ata Rezaei, Susan S. Andrews

IGC Proceedings (1977-2023)

No abstract provided.

Seasonal Nutrition Content Changes Of Stockpiled And Standing Leymus Cinereus Forage, Barry L. Perryman, L. B. Bruce, K. Conley, L. Schmelzer, T. Wuligi

IGC Proceedings (1977-2023)

No abstract provided.

Use Of Biofertilizer In The Formation Of Joined Pastures With Brachiaria Decumbens And Stylosanthes Sp, L. M. Paiva, H. J. Fernandes, V. A. C. Dos Santos, F. P. De Oliveira, P. S. F. Trevisan, A. V. De Almeida

IGC Proceedings (1977-2023)

No abstract provided.

Productivity Potential And Seasonality Of Five Grass Species Under Varying Nitrogen Levels At Three Latitudes In Ireland, D. Mcgilloway, Trevor J. Gilliland

IGC Proceedings (1977-2023)

No abstract provided.

Preliminary Investigations On Columbus Grass (Sorghum Almum Parodi) For Fodder In Semi‐Arid Nigeria: Effects Of Nitrogen Fertilizer On Growth Components And Herbage Yield, B. S. Malami, H. M. Tukur, N. B. Ibrahim

IGC Proceedings (1977-2023)

No abstract provided.