Results 41 to 50 of about 20,778 (248)

Estimating Grazing Pressure from Satellite Time Series Without Reliance on Total Production

Remote Sensing
Accurately assessing grazing impacts is essential for sustaining alpine grasslands. Conventional approaches often rely on total forage productivity, an indirect and uncertain proxy for forage availability.
Yan Shi, Jay Gao, Gary Brierley, Xilai Li, Jin-Sheng He   +4 more
doaj   +1 more source

Fast rotational intensive grazing

, 2017
The increased demand for meat is driven by a rising human population, and a dramatic growth in meat consumption per person. Farmers and scientists have sought to curb the adverse environmental impacts of livestock by increasing production efficiency, and reducing its contribution to human consumption.
Catalan, María, Palomo, Gonzalo, Moreno, Gerardo   +2 more
openaire   +1 more source

Grazing modulates plant and soil microbial diversity by changing soil nutrients in desert steppe

Global Ecology and Conservation
Grassland plays a key role in global ecological balance. Grazing, being the tool by which humans utilize grasslands, impacts biodiversity. Using a long-term grazing experimental platform in the desert steppe of Inner Mongolia, this study explored the ...
Bo Fan, Zihan Wang, Zhongwu Wang, Qian Wu, Pablo Gregorini, Guodong Han   +5 more
doaj   +1 more source

Carbon budgets for an irrigated intensively grazed dairy pasture and an unirrigated winter-grazed pasture [PDF]

Biogeosciences, 2016
Abstract. Intensification of pastoral agriculture is occurring rapidly across New Zealand, including increasing use of irrigation and fertiliser application in some regions. While this enables greater gross primary production (GPP) and livestock grazing intensity, the consequences for the net ecosystem carbon budget (NECB) of the pastures are poorly ...
John E. Hunt, Johannes Laubach, Matti Barthel, Anitra Fraser, Rebecca L. Phillips   +4 more
openaire   +4 more sources

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Grazing Intensity and Spatial Heterogeneity in Bare Soil in a Grazing-Resistant Grassland [PDF]

Rangeland Ecology & Management, 2012
Abstract We used very large scale aerial (VLSA) photography to quantify spatial patterns in bare soil in the northeastern Colorado shortgrass steppe. Using three pairs of pastures stocked at moderate (0.6 animal unit months lAUM] · ha -1 ) versus very heavy (1.2 AUM · ha -1 ) rates, we detected greater bare soil under very heavy (mean  =  22.5 ...
David J. Augustine, D. rrance Te Booth, Samuel E. Cox, Justin D. Derner   +3 more
openaire   +1 more source

Chemical State Detection and Charge Transfer in Complex Oxide Heterostructures via In Situ Auger Electron Spectroscopy

Advanced Functional Materials, EarlyView.
In situ Auger Electron Spectroscopy resolves oxidation states with high fidelity during the pulsed laser deposition of multivalent perovskite manganate and vanadate heterostructures. The chemical‐state signature is carried by the valence‐electron population of the transition‐metal cation, read out through the relative intensities of Auger fine ...
Harish Kumarasubramanian, Jayakanth Ravichandran   +1 more
wiley   +1 more source

Demonstrating Vibrational Current Generation With a Self‐Assembled Bioelectret

Advanced Functional Materials, EarlyView.
Vacuum‐deposited films of the plant‐derived molecule, Baicalein, form a self‐assembled bioelectret exhibiting spontaneous orientation polarization and a giant surface potential. The films induce alternating current during the vibration of a movable electrode without charging treatments. Hydrocarbon protection enhances the air stability of the Baicalein
Kouki Akaike, Yukihiro Shimoi, Qingshuo Wei, Yutaro Ono, Satomi Hosono, Yoichi Yamada, Haruhisa Akiyama, Shunsuke Tanaka   +7 more
wiley   +1 more source

Long-term yak-grazing alters the plant fine-root resource acquisition strategies in Tibetan alpine meadow

Ecological Indicators
Understanding how fine-root resource acquisition strategies respond to yak grazing is critical for comprehending the structure and functioning of alpine meadow ecosystems.
Haiyang Gong, Tserang Donko Mipam, Josep Peñuelas, Jordi Sardans, Youcun Suo, Nan Jia, Heng Huang, Wei Wang, Qingping Zhou, Zhiqiang Wang   +9 more
doaj   +1 more source

Non‐Monotonic Changes in the Thermal Conductivity of Conjugated Polymer Films with Increasing Levels of Chemical Doping

Advanced Functional Materials, EarlyView.
Thermal conductivity changes non‐monotonically as regioregular (RR) and regiorandom (RRa) P3HT films are doped with F4TCNQ as a function of the extent to which P3HT is doped: an increase in thermal conductivity is observed upon lightly doping P3HT compared to the undoped film, followed by a decrease in the heavily doped regime. ABSTRACT The performance
Reid W. Wilson, Xinping Shi, Diego Garcia Vidales, Abigail Slimp, Zerina Mehmedović, Alexander F. Simafranca, Eric C. Wu, Sarah H. Tolbert, Richard B. Wilson, Benjamin J. Schwartz   +9 more
wiley   +1 more source