Results 91 to 100 of about 203,784 (224)

About units and units systems of the ecological values

open access: yesRUDN Journal of Ecology and Life Safety, 2009
At present exist several approaches to classification of characteristics (classes) estimation of ecosystem and geosphere cover of the Earth. At norm-setting and standardizations of man-caused influence to environment it is offered to choose the biotic ...
V N Zykov
doaj  

Environmental Heterogeneity Drives Secondary Metabolite Diversity from Mesquite Pods in Semiarid Regions

open access: yesEcologies
Secondary metabolites (SM) in plants play crucial pharmacological, ecological, and nutritional roles for humans, wildlife, and livestock. Environmental Heterogeneity (EH) encompasses the variability of biotic and abiotic factors that influence biological
Alfredo Esparza-Orozco   +10 more
doaj   +1 more source

AgGym: An agricultural biotic stress simulation environment for ultra-precision management planning [PDF]

open access: yesarXiv
Agricultural production requires careful management of inputs such as fungicides, insecticides, and herbicides to ensure a successful crop that is high-yielding, profitable, and of superior seed quality. Current state-of-the-art field crop management relies on coarse-scale crop management strategies, where entire fields are sprayed with pest and ...
arxiv  

Heavy Metal Concentrations in some Biotic and Abiotic Components of the Olezoa Wetland Complex (Yaoundé-Cameroon, West Africa) [PDF]

open access: bronze, 2005
Théophile Fonkou   +6 more
openalex   +1 more source

Effects of zooplankton abundance on the spawning phenology of winter-spawning Downs herring (Clupea harengus).

open access: yesPLoS ONE
We have investigated phenological shifts in autumn- and winter-spawning Atlantic herring (Clupea harengus) in the Eastern English Channel and the Southern North Sea (Downs component), in relation to temperature and the availability of potential ...
Paul Marchal   +5 more
doaj   +1 more source

INTEGRATION OF COMPONENTS FOR THE SIMULATION OF BIOTIC AND ABIOTIC STRESSES IN MODEL-BASED YIELD FORECASTING SYSTEMS

open access: yes, 2017
The raising global demand for agricultural products and the exacerbated inter-annual fluctuations of food productions due to climate change are increasing world food price volatility and threatening food security in developing countries. In this context, the availability of reliable operational yield forecasting systems would allow policy makers to ...
openaire   +3 more sources

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