Results 31 to 40 of about 58,207 (328)

Progress and bottlenecks in the early domestication of the perennial oilseed Silphium integrifolium, a sunflower substitute [PDF]

open access: yes, 2018
Silflower (Silphium integrifolium Michx.) is in the early stages of domestication as a perennial version of oilseed sunflower, its close relative. Grain crops with deep perennial root systems will provide farmers with new alternatives for managing soil ...
Crews, Timothy E.   +6 more
core   +2 more sources

Dynamics of hydrological droughts propagation in mountainous catchments

open access: yesMiscellanea Geographica, 2022
Abstract In the study, hydrological drought was identified assuming that the occurrence of river low-flow is a symptom of drought, and is also a good estimator of its progress. The research was conducted in the upper Dunajec river catchment, for which a series of daily discharges from 20 gauging stations during the period 1989–2018 were ...
Malwina Kozek, Edmund Tomaszewski
openaire   +2 more sources

Estimating propagation probability from meteorological to ecological droughts using a hybrid machine learning copula method [PDF]

open access: yesHydrology and Earth System Sciences, 2023
The impact of droughts on vegetation is essentially manifested as the transition of water shortage from the meteorological to ecological stages. Therefore, understanding the mechanism of drought propagation from meteorological to ecological drought is ...
T. Jiang   +8 more
doaj   +1 more source

A precipitation recycling network to assess freshwater vulnerability : challenging the watershed convention [PDF]

open access: yes, 2019
Water resources and water scarcity are usually regarded as local aspects for which a watershed-based management appears adequate. However, precipitation, as a main source of freshwater, may depend on moisture supplied through land evaporation from ...
Keune, Jessica, Miralles, Diego
core   +2 more sources

The effect of climate type on timescales of drought propagation in an ensemble of global hydrological models [PDF]

open access: yesHydrology and Earth System Sciences, 2018
Drought is a natural hazard that occurs at many temporal and spatial scales and has severe environmental and socioeconomic impacts across the globe.
A. I. Gevaert   +3 more
doaj   +1 more source

Effect of Vegetative Propagation Materials on Globe Artichoke Production in Semi-Arid Developing Countries: Agronomic, Marketable and Qualitative Traits [PDF]

open access: yes, 2017
: In Tunisia, globe artichoke is mainly propagated by underground dormant axillary buds (ovoli), which are removed from the field in August during the quiescence period. The high cost of in vitro-plants and the absence of specialized nurseries were among
Bouzaein, Ghaith   +4 more
core   +1 more source

Automation of hydrological drought typology to study drought propagation in a tropical catchment [PDF]

open access: yes, 2021
Understanding how droughts propagate through the hydrological cycle from precipitation to streamflow and groundwater is important for improving water and risk management policies. At the catchment scale, the analysis of drought propagation and classification into drought types is usually done manually, which can be time consuming and difficult to ...
Beatriz Quesada-Montano   +5 more
openaire   +1 more source

The Spread of Multiple Droughts in Different Seasons and Its Dynamic Changes

open access: yesRemote Sensing, 2023
Investigating the propagation and influencing mechanism that transitions a meteorological drought to a hydrological drought in a changing environment is crucial for understanding the formation process and mechanism of hydrological drought.
Shuang Zhu   +4 more
doaj   +1 more source

From meteorological to hydrological drought using standardised indicators [PDF]

open access: yes, 2016
Drought monitoring and early warning (M & EW) systems are a crucial component of drought preparedness. M & EW systems typically make use of drought indicators such as the Standardised Precipitation Index (SPI), but such indicators are not widely used in ...
Barker, Lucy J.   +3 more
core   +2 more sources

Drought Propagation Patterns under Naturalized Condition Using Daily Hydrometeorological Data

open access: yesAdvances in Meteorology, 2018
Drought propagation pattern forms a basis for establishing drought monitoring and early warning. Due to its regional disparity, it is necessary and significant to investigate the pattern of drought propagation in a specific region.
Jianzhu Li   +4 more
doaj   +1 more source

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