Life Sciences Commons^™

Spatial Patterns Of Range Management And Fodder Resources: How Important Is Local Reserve Biomass?, Anja Linstädter, J. Eisold, Gisela Baumann

IGC Proceedings (1997-2023)

No abstract provided.

Application Of Forage Monitoring Technology To Track Drought Occurrences: Experiences From Eastern Africa, R. Kaitho, J. Ndung'u, G. Kariuki, M. Kingamkono, J. Gutta, E. Kebebe, P. Dyke

IGC Proceedings (1997-2023)

No abstract provided.

Growth And Water Use Of Perennial Ryegrass And Tall Fescue Under Different Irrigation Treatments, R. J. Martin, Trevor L. Knight, R. N. Gillespie, M. U. Riddle, Tom J. Fraser

IGC Proceedings (1997-2023)

No abstract provided.

Gobi Forage: An Early Warning System For Livestock In The Gobi Region Of Mongolia, L. Bolor-Erdene, Jay Peter Angerer, Sean Granville-Ross, M. Urgamal, D. Narangarel, D. Tsogoo, Tim Stewart, Dennis Sheehy

IGC Proceedings (1997-2023)

No abstract provided.

Verification Of A Forage Simulation Model Used For A Livestock Early Warning System In The Gobi Region Of Mongolia, Jay Peter Angerer, L. Bolor‐Erdene, M. Urgamal, D. Tsogoo

IGC Proceedings (1997-2023)

No abstract provided.

Characterization Of Shallow Subsurface Hydrology In Large Fine-Grained Floodplains, Mary Grace Lemon

LSU Doctoral Dissertations

Floodplains are hydrologically dynamic, receiving water from overbank events, hyporheic flows, local precipitation, and regional groundwater sources. These sources are variously important contributors to the heterogeneous floodplain water pool that includes matrix water in soil micropores, mobile water in soil macropores, groundwater below the rooting zone, ephemeral to seasonal surface storage, and permanent surface water features such as oxbow lakes, sloughs, and other secondary channels. All sources may be ecologically relevant for floodplain vegetation, but the exact roles of each source in both controlling soil water and shallow groundwater recharge and in controlling floodplain water drainage are not well understood, …

Diachronic Analysis Of Vegetation In The Sylvopastoral Zone (Senegal): What Lesson To Learn From?, A. T. Diop, A. Diouf, A. Wane

IGC Proceedings (1997-2023)

No abstract provided.

The Study Of Salinity And Drought Stress Effects On Three Range Species Agropyron Intermedium, Avena Barbata And Panicum Antidotale From Iran, M. M. Sharifi Kashan, Z. Tolui

IGC Proceedings (1997-2023)

No abstract provided.

Effects Of 10 Years Of Fire And Climate Variability On Perennial Grass Cover In Shortgrass Steppe, P. L. Ford

IGC Proceedings (1997-2023)

No abstract provided.

Gross Biomass And Root/Shoot Ratio Mediated Drought Sensitivities Of Ecosystem Carbon Exchange In A Meadow Steppe, Yunbo Wang, Wei Sun, Deli Wang

IGC Proceedings (1997-2023)

According to IPCC’s Report (2007), global precipitation regimes will change largely in the future, with more annual precipitation at the mid-latitude regions. Simultaneously, due to the accelerating industrialization and use of nitrogen (N) fertilizer, significant increase in nitrogen deposition has been widely documented (Liu et al., 2013).

Water and nitrogen are the two most important limiting factors for the ecological processes of arid and semi-arid grassland ecosystems; therefore, altered precipitation regimes and enhanced nitrogen deposition are likely to change vegetation composition, ecosystem productivity, and aboveground vs belowground biomass distribution.

In addition to these long-term changes, short-term climate extremes, such …

Drought Effect On Yield Of Forages Grass Species, Michal Kvasnovský, Pavel Knot, Lucia Hodulíková, Iva Klusoňová

IGC Proceedings (1997-2023)

Climate change (rising temperatures, lengthening of the growing season, increasing evaporation) significantly affects agricultural production in traditional production areas of Central Europe, as illustrated by example better results in growing of corn on its northern or upper height limit. Changes in the amounts and timing of rainfall events will probably affect ecosystem processes, including those that control carbon (C) cycling and storage. In relation to the ongoing global warming, it is desirable to test resistance of grass species to a lack of moisture. Seasonal variation in precipitation and temperature are important controls of soil and plant processes in grasslands. (Fiala …

Drought Tolerance Screening Of Avena Species By Inducing Water Stress Conditions At Vegetative And Flowering Stage, Harish C. Pandey

IGC Proceedings (1997-2023)

Oats is the most important cereal fodder crop grown in the winter season in the north western, central India and now extending to the eastern region. In India it is grown in Punjab, Haryana, Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, Madhya Pradesh, Rajasthan, Maharashtra and Bengal. Oat is a high yielding crop and the average yield varies from 45-55 ton of green fodder per hectare. Oat is ranked sixth in world cereal production statistics following wheat, maize, rice, barley and sorghum. Mostly oats are grown as green fodder and grain to be used as a feed for cattle. Since …

Landscape-Scale Patterns Of Fire And Drought On The High Plains, Usa, Paulette L. Ford, Charles Jackson, Matthew Reeves, Benjamin Bird, David Turner

IGC Proceedings (1997-2023)

We examine 31 years (1982-2012) of temperature, precipitation and natural wildfire occurrence data for Federal and Tribal lands to determine landscape-scale patterns of drought and fire on the southern and central High Plains of the western United States. The High Plains states of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas and Wyoming have been in the midst of ongoing extreme drought, experiencing below normal precipitation and above normal temperatures for the past several years. Climate change is predicted to have multiple effects on fire regimes. Longer periods of drought conditions, coupled with hot, dry and windy weather, provide …

Economics Of Bn Hybrid Grass Production Bundelkhand Region Of India: A Case Study, Satendra Kumar, Ravi Pratap Singh, Rajiv K. Agrawal, J. B. Singh, M. M. Das, Sunil Kumar

IGC Proceedings (1997-2023)

Napier grass is also called as Elephant Grass due to its tallness and vigorous vegetative growth. The plants tiller freely and a single clump may produce more than 60 tillers under favorable climatic and soil conditions. Unfortunately, the grass coarse-textured, the leaf blade sheaths as well as sharply serrated, leaf margins. Therefore, cross was made between Bajra which is more succulent, leafy, fine-textured, palatable, fast growing and drought resistant and Napier to combine these qualities with its high yielding potential. The outcome Hybrid Napier is a perennial grass which can be retained on field for 2-3 years. Hybrid napier grass …

Influence Of Forest-To-Silvopasture Conversion And Drought On Components Of Evapotranspiration, Adam P. Coble, Alexandra R. Contosta, Richard G. Smith, Nathan W. Siegert, Matthew A. Vadeboncoeur, Katie A. Jennings, Anthony J. Stewart, Heidi Asbjornsen

Natural Resources & the Environment

The northeastern U.S. is projected to experience more frequent short-term (1-2 month) droughts interspersed among larger precipitation events. Agroforestry practices such as silvopasture may mitigate these impacts of climate change while maintaining economic benefits of both agricultural and forestry practices. This study evaluated the effects of forest-to-silvopasture (i.e., 50% thinning) conversion on the components of evapotranspiration (transpiration, rainfall interception, and soil evaporation) during the growing season of 2016. The study coincided with a late-summer drought throughout the northeastern U.S., which allowed us to also evaluate the effects of forest-to-silvopasture conversion on drought responses of multiple tree species, including Pinus strobus, …

Microhistological Analysis Of Cows' Diet During A Severe Drought In The Semi Arid Region Of North Patagonia (Argentina), E. Schmale, L. I. Lindström, M. G. Klich

IGC Proceedings (1997-2023)

The continuous use of the livestock fields of the Middle Valley of Río Negro, North Patagonia, Argentina, combined with adverse weather conditions that occur periodically, have contributed to the degradation of rangelands. The historical annual average rainfall regime in the Valle Medio of Río Negro is 303 mm but between 2002 and 2011, the average deficit was 33%. According to the Rural Society of Choele Choel, due to the decreased forage on offer, the existence of cattle in 2011 dropped to 85,000 animals, representing 50% of the normal amount for the area. During these critical times of drought, when grasslands …

Assessing Agricultural Risk Management Using Historic Crop Insurance Loss Data Over The Ogallala Aquifer, Julian Reyes, Emile Elias, Erin M.K. Haacker, Amy Kremen, Lauren Parker, Caitlin Rottler

Department of Earth and Atmospheric Sciences: Faculty Publications

Much of the agricultural production in the Ogallala Aquifer region relies on groundwater for irrigation. In addition to declining water levels, weather and climate-driven events affect crop yields and revenues. Crop insurance serves as a risk management tool to mitigate these perils. Here, we seek to understand what long-term crop insurance loss data can tell us about agricultural risk management in the Ogallala. We assess patterns and trends in crop insurance loss data from the U.S. Department of Agriculture Risk Management Agency. Indemnities, or insurance payments, totaled $22 billion from 1989–2017 for the 161 counties that overlie the Ogallala Aquifer. …

Leaf Angle And Leaf Stomata Responses To Experimental Drought In Quercus Velutina And Acer Saccharum, Brittany Nichole Casey

Graduate Theses, Dissertations, and Problem Reports

The possibility of increased severity and frequency of drought conditions, as a result of global climate variability, greatly complicates our ability to forecast future forest functions such as productivity and carbon sequestration. Assessing how tree species vary in their response to drought can aid in predicting the impact on forest ecosystems as a whole. Throughfall exclusion (TfE) experiments are potentially useful tools to simulate realistic drought conditions within intact forest ecosystems. We employed a TfE experiment during the 2018 growing season within the WV Land Trust’s Elizabeth’s Woods Nature Preserve, near Morgantown, WV, to assess the leaf angle and leaf …