Digital Commons Network^™

Changes In The Physiology Of Tall Fescue During Regrowth, Danny J. Donaghy, Lydia R. Turner, K. A. Adamczewski, L. L. Burkitt

IGC Proceedings (1977-2023)

No abstract provided.

Improvement Of Manure Quality And Crop Yields By Cattle Supplementation, Maimouna Cissé, M. Diaye, C. M. Dione

IGC Proceedings (1977-2023)

No abstract provided.

Measurement At Pasture Of Intake, Digestibility And Chemical Composition Of The Diet Of Nursing Ewes, Using Faecal Nirs, Maryline Boval, A. Fanchone, E. Ortega‐Jimenez, G. Alexandre

IGC Proceedings (1977-2023)

No abstract provided.

Sward Structure And Foraging Behaviour Of Cattle Grazing Reproductive Tropical Pastures, Marcelo A. Benvenutti, I. J. Gordon, Dennis P. Poppi

IGC Proceedings (1977-2023)

No abstract provided.

The Effects Of Grazing On The Vegetation Of Typical Steppe In Mongolia Plateau, Xiuxia Bao, Jin Yi, Qimuge Wuren, Yong Lian, Buda Su

IGC Proceedings (1977-2023)

No abstract provided.

Intake Rate Oscillations At The Meal Scale: The Dynamics Of Feeding Choices For Coping With Diversity On Rangelands, Cyril Agreil, Pascal Monestiez, Juan Villalba

IGC Proceedings (1977-2023)

No abstract provided.

Recording The Prehensive Bite Diversity In Cows For A Dynamic Analysis Of Foraging Behavior On Diversified Vegetation, Cyril Agreil, Michel Meuret

IGC Proceedings (1977-2023)

No abstract provided.

Interactions Of Forage Quality And Physiological State On Forage Intake Of Grazing Beef Cows In Autumn, Elaine E. Grings, A. J. Roberts

IGC Proceedings (1977-2023)

No abstract provided.

Pasture Cropping‐Integrating Livestock And Crop Production For Sustainable Management Of Rangelands In South East Australia, Warwick B. Badgery, C. Seis, Geoff D. Millar

IGC Proceedings (1977-2023)

No abstract provided.

Precision Pastoralism‐Advanced Systems For Management And Integration Of Livestock And Forage Resources In The Semi‐Arid Rangelands In South Eastern Australia, Ronald B. Hacker, T. J. Thompson, W. K. Murray, Yohannes Alemseged, P. K. Timmers

IGC Proceedings (1977-2023)

No abstract provided.

Opportunities To Use Secondary Plant Compounds To Manage Diet Selection And Gut Health Of Grazing Herbivores, Dean K. Revell, Andrew Kotze, D. T. Thomas

IGC Proceedings (1977-2023)

No abstract provided.

Investigation Of The Interaction Of Gadolinium With Several Organic Ligands And Humic Acid By Ligand Competition Using 4-(2-Pyridylazo)-Resorcinol (Par), Spencer Steinberg, Vernon Hodge, Luis Becerra-Hernandez

Chemistry and Biochemistry Faculty Research

Gd3+ forms a strongly colored complex with 4-(2-pyridylazo)-resorcinol (PAR) in aqueous solutions. We characterized the Gd3+-PAR complex in order to use it as a probe of Gd3+ speciation in the presence of environmentally relevant ligands. The formation of the Gd3+-PAR complex was investigated from pH 5 to 8 in the presence of excess PAR. The absorbance of the Gd3+-PAR complex dramatically increased from pH 5 to 8 and application of the method of continuous variation indicates that the complex was primarily 1:2 Gd(PAR)2 at pH 8. Stability constants for Gd3+ with other ligands can be quantified by competitive displacement of …

Managing Natural Grasslands In A Changing World: Grazing Ecology Insights To Accomplish Re‐Oriented Management Expectations, Paulo C. De F. Carvalho, Sila C. Da Silva, Carlos Nabinger, Anibal De Moraes, Teresa C. M. Genro

IGC Proceedings (1977-2023)

No abstract provided.

Long‐Term Soil Nitrogen And Carbon Change In Semi Steppe Rangelands Of Golestan National Park, Iran, Ramin Nourqolipour, Mohammad Jafary, M. Reza Bihamta

IGC Proceedings (1977-2023)

No abstract provided.

Observing And Measuring Water Quality Of Central California Estuaries For Steelhead Trout (Onchorynchus Mykiss), Charles Alexander Taylor

Master of Science in Environmental Sciences and Management Projects

Estuaries support abundant biodiversity but are threatened by anthropogenic influences making it a priority to effectively monitor water quality to identify if and when it becomes detrimental to aquatic life. The purpose of the study was to analyze water quality in local San Luis Obispo estuaries to measure baseline conditions to inform future studies and management and to identify if key water quality parameters such as dissolved oxygen or temperature result in stressful or lethal conditions for steelhead trout (Onchorynchus mykiss). An EXO1 multiparameter snode (probe) was used to measure dissolved oxygen (mg/l), temperature (in Celsius), conductivity (Us/cm), salinity (parts …

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 …

Eating Barbed Wire: Direct And Indirect Defensive Roles Of Non-Glandular Trichomes, Ishveen Kaur, Rupesh R. Kariyat

School of Earth, Environmental, & Marine Sciences Faculty Publications

No abstract provided.

Sea-Ice Production And Air/Ice/Ocean/Biogeochemistry Interactions In The Ross Sea During The Pipers 2017 Autumn Field Campaign, S. F. Ackley, S. Stammerjohn, T. Maksym, M. Smith, J. Cassano, P. Guest, J.-L. Tison, B. Delille, B. Loose, Peter N. Sedwick, L. Depace, L. Roach, J. Parno

OES Faculty Publications

The Ross Sea is known for showing the greatest sea-ice increase, as observed globally, particularly from 1979 to 2015. However, corresponding changes in sea-ice thickness and production in the Ross Sea are not known, nor how these changes have impacted water masses, carbon fluxes, biogeochemical processes and availability of micronutrients. The PIPERS project sought to address these questions during an autumn ship campaign in 2017 and two spring airborne campaigns in 2016 and 2017. PIPERS used a multidisciplinary approach of manned and autonomous platforms to study the coupled air/ice/ocean/biogeochemical interactions during autumn and related those to spring conditions. Unexpectedly, the …

Assessing The Influence Of International Environmental Treaty Secretariats Using A Relational Network Approach, Andrew M. Song, Owen Temby, Dongkyu Kim, Gordon M. Hickey

School of Earth, Environmental, & Marine Sciences Faculty Publications

The influential role of international treaty secretariats in coordinating bureaucracies across jurisdictional boundaries has been highlighted in recent years. While we now better understand how their influence occurs, the field still faces a substantial difficulty in answering the basic quantitative question of “how influential?” By employing network analysis, we devised and tested a survey to quantify secretariat influence within an international environmental regime. We applied the survey tool to two transboundary fisheries governance networks in North America and here focus on the Great Lakes Fishery Commission (GLFC) as our primary case study. The results demonstrate a high ability of treaty …

Effect Of Gradually Water Stress And Recovery On Photosynthesis, Transpiration, And Stomatal Conductance In Two Plantago Species, A. Rahimi, H. R. Rahimian Mashhadi, M. R. Jahansoz

IGC Proceedings (1977-2023)

No abstract provided.

Correlations Between Soil Properties And Plant Growth For Special Synthetic Soils Added With Five Components Used In High‐And‐Cut Rock Slopes, Guijuan Gao, Ruihong Han

IGC Proceedings (1977-2023)

No abstract provided.

Study On The Relationship Between Edaphon Amount And Soil Type In Desert Grassland, Ting Gao, Fengxia Li, Xiaogang Zhang

IGC Proceedings (1977-2023)

No abstract provided.

Nutrition Management In Fodder Grass Production For Fisheries In Hubei, F. Chen, J. W. Lu, X. K. Li, W. X. Li, H. X. Zhao, J. M. Lu

IGC Proceedings (1977-2023)

No abstract provided.

Long‐Term Effects Of Annual Applications Of N And S Fertilizers To Grassland On Forage Yield, Rootmass, And Soil Ph, Organic C And N On A Dark Gray Chernozem In North‐Central Saskatchewan, S. S. Malhi, M. Nyborg

IGC Proceedings (1977-2023)

No abstract provided.

Conservation Tillage Influence On Topsoil Aggregation And Carbon Content On The Loess Plateau, China, Jing Yang, Yuying Shen, Zhibiao Nan, Yining Niu, Liying Geng

IGC Proceedings (1977-2023)

No abstract provided.

Nutrient Hotspots From Patch Burning In A Namibian Rangeland, I. Zimmermann, L. Tjilumbu, G. Diekmann

IGC Proceedings (1977-2023)

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.

Effects Of Fertilizer And Plant Density On The Fresh Biomass Of Sudan Grass, Zhongsheng Zhi, Guiping Yao, Jianguang Wang, Meihua Gao, Meihua Li

IGC Proceedings (1977-2023)

No abstract provided.