Results 31 to 40 of about 119,922 (306)

Tree-Grass interactions dynamics and Pulse Fires: mathematical and numerical studies

, 2015
Savannas are dynamical systems where grasses and trees can either dominate or coexist. Fires are known to be central in the functioning of the savanna biome though their characteristics are expected to vary along the rainfall gradients as observed in Sub-
Bowong, S., Couteron, P., Dumont, Y., Tamen, A. Tchuinté, Tewa, J. J.   +4 more
core   +2 more sources

Strong evidence for negligible methyl chloroform (CH3CCl3) emissions from biomass burning [PDF]

, 2007
With the phase-out of industrial methyl chloroform (MCF) production, the atmospheric burden of this ozone-depleting gas has rapidly declined. Therefore any non-industrial sources are taking on greater significance in the MCF budget.
Andersen, MPS, Blake, DR, Blake, NJ, Meinardi, S, Rowland, FS, Simpson, IJ   +5 more
core  

First assessment of the plant phenology index (PPI) for estimating gross primary productivity in African semi-arid ecosystems

, 2019
The importance of semi-arid ecosystems in the global carbon cycle as sinks for CO2 emissions has recently been highlighted. Africa is a carbon sink and nearly half its area comprises arid and semi-arid ecosystems.
Abdi, A. M., Ardo, J., Boke-Olen, N., Eklundh, L., Jin, H., Lehsten, V., Tagesson, T.   +6 more
core   +1 more source

Does crop-livestock integration lead to improved crop production in the savanna of West Africa? [PDF]

, 2010
Integrated crop-livestock farming in the Guinea savanna of West Africa is often assumed to lead to synergies between crop and livestock production, thereby improving the overall productivity and resilience of agricultural production.
Berkhout, E.D., Dercon, S., Diels, J., Franke, A.C., Iwuafor, E.N.O., Nziguheba, G., Plas, I., van der   +6 more
core   +2 more sources

Parasitoid complex of fall armyworm, spodoptera frugiperda, in Ghana and Benin [PDF]

, 2020
Open Access Journal; Published online: 21 Jan 2020The fall armyworm, Spodoptera frugiperda, a moth originating from the American continent, has recently invaded most African countries, where it is seriously threatening food security as a pest of cereals.
Agboyi, L.K., Beseh, P., Buddie, A., Cafa, G., Clottey, V.A., Day, R., Glikpo, R., Goergen, G., Kenis, M., Mensah, S.A., Offord, L., Rwomushana, I.   +11 more
core   +1 more source

Examining the Impact of Row Planting on Labor Use for Sustainable Food Production Among Maize Farmers in Rural Ghana

Agribusiness, EarlyView.
ABSTRACT Smallholder farmers are reverting to traditional production methods due to the high opportunity costs and unintended consequences of new technologies. This study focuses on row planting technology, which is labor‐intensive and slow without mechanized operations.
Emmanuel Tetteh Jumpah, Habtamu Alem, Abdulai Adams, Tomáš Ratinger, Miroslava Bavorová   +4 more
wiley   +1 more source

Vascular Flora of Hooper Branch Savanna Nature Preserve, Iroquois County, Illinois [PDF]

, 2002
INHS Technical Report prepared for Illinois Department of Natural Resources, Division of Natural ...
Busemeyer, Daniel T., Carroll, Connie J., Ebinger, John E., Feist, Mary Ann, Hunter, Katherine J., Larimore, Richard L., Marcum, Paul B., Phillippe, Loy R.   +7 more
core  

Modular Electronic Microrobots With Onboard Sensor‐Program‐Steered Locomotion

Advanced Intelligent Systems, EarlyView.
Modular electronic smartlet microrobots integrate ambient‐light energy harvesting, photodetection, programmable CMOS control, and bubble‐based actuation within a sub‐millimeter fold‐up architecture. A 58‐bit on‐board CMOS chiplet enables sensor–program steered switching between independently addressable actuators, achieving closed‐loop 2D navigation in
Vineeth K. Bandari, Yeji Lee, Pranathi Adluri, Daniil Karnaushenko, Dmitriy D. Karnaushenko, John S. McCaskill, Oliver G. Schmidt   +6 more
wiley   +1 more source

Determining the optimal inoculant rate to maximize soybean productivity in the Guinea Savanna agro-ecological zone of Ghana

Scientific Reports
Soybean productivity in sub-Saharan Africa is often constrained by low soil fertility and limited biological nitrogen fixation (BNF). This study evaluated the effects of different rhizobial inoculant rates (0, 5, 7.5, 10, and 12.5 g kg−1 seed) on growth,
Abdul-Latif Abdul-Aziz, Bashiru Haruna, Jacob Ulzen, Issah Alidu Abukari, Abdulai Haruna, Rashidatu Abdulai, Alhassan Yamyolya Baako, Ibrahim Salifu Yusif   +7 more
doaj   +1 more source

Reflecting on research produced after more than 60 years of exclosures in the Kruger National Park

Koedoe: African Protected Area Conservation and Science, 2022
Herbivores are a main driver of ecosystem patterns and processes in semi-arid savannas, with their effects clearly observed when they are excluded from landscapes.
Corli Wigley-Coetsee, Tercia Strydom, Danny Govender, David I. Thompson, Navashni Govender, Judith Botha, Chenay Simms, Adolf Manganyi, Laurence Kruger, Jacques Venter, Cathy Greaver, Izak P. Smit   +11 more
doaj   +1 more source