An impact perspective on pan-European drought sensitivity

2015 ◽  
pp. 345-350 ◽  
Keyword(s):  
Drought Sensitivity

MAPK‐like protein 1 positively regulates maize seedling drought sensitivity by suppressing ABA biosynthesis

2020 ◽  
Vol 102 (4) ◽  
pp. 747-760 ◽  
Author(s):  
Dan Zhu ◽  
Ying Chang ◽  
Ting Pei ◽  
Xiuyan Zhang ◽  
Lan Liu ◽  
...  
Keyword(s):  
Maize Seedling ◽  
Drought Sensitivity ◽  
Aba Biosynthesis

Comparative drought sensitivity of co‐occurring white spruce and paper birch in interior Alaska

2021 ◽  
Author(s):  
Patrick F. Sullivan ◽  
Annalis H. Brownlee ◽  
Sarah B.Z. Ellison ◽  
Sean M.P. Cahoon
Keyword(s):  
White Spruce ◽  
Drought Sensitivity ◽  
Interior Alaska ◽  
Paper Birch

scholarly journals Norway Spruce Seedlings from an Eastern Baltic Provenance Show Tolerance to Simulated Drought

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 82
Author(s):  
Roberts Matisons ◽  
Oskars Krišāns ◽  
Āris Jansons ◽  
Toms Kondratovičs ◽  
Didzis Elferts ◽  
...  
Keyword(s):  
Water Deficit ◽  
Norway Spruce ◽  
Soil Type ◽  
Photochemical Reactions ◽  
Commercial Application ◽  
Important Species ◽  
Fluorescence Parameters ◽  
Drought Sensitivity ◽  
Irrigation Intensity ◽  
Eastern Baltic

In Northern Europe, an increase in heterogeneity of summer precipitation regime will subject forests to water deficit and drought. This is particularly topical for Norway spruce (Picea abies Karst.), which is a drought sensitive, yet economically important species. Nevertheless, local populations still might be highly plastic and tolerant, supporting their commercial application. Accordingly, the tolerance of Norway spruce seedlings from an Eastern Baltic provenance (western part of Latvia) to artificial drought according to soil type was assessed in a shelter experiment. To simulate drought, seedlings were subjected to reduced amounts (0%, 25%, 50%, 75%, and 100%) of naturally occurring precipitation (irrigation intensity). Three soil types (oligotrophic mineral, mesotrophic mineral, and peat) were tested. Seedling height, chlorophyll a concentration, and fluorescence parameters were measured. Both growth and photochemical reactions were affected by the irrigation intensity, the effect of which experienced an interacted with soil type, implying complex controls of drought sensitivity. Seedlings were more sensitive to irrigation intensity on mesotrophic mineral soil, as suggested by growth and photosynthetic activity. However, the responses were nonlinear, as the highest performance (growth and fluorescence parameters) of seedlings occurred in response to intermediate drought. On peat soil, which had the highest water-bearing capacity, an inverse response to irrigation intensity was observed. In general, fluorescence parameters were more sensitive and showed more immediate reaction to soil water deficit than concentration of chlorophyll on mesotrophic mineral and peat soils, while the latter was a better indicator of seedling performance on oligotrophic soil. This indicated considerable plastic acclimation and hence tolerance of seedlings from the local Norway spruce population to drought, though drought sensitivity is age-dependent.

Changes in the drought sensitivity of US maize yields

Nature Food ◽  
2020 ◽  
Vol 1 (11) ◽  
pp. 729-735 ◽  
Author(s):  
David B. Lobell ◽  
Jillian M. Deines ◽  
Stefania Di Tommaso
Keyword(s):  
Drought Sensitivity ◽  
Maize Yields

Stress-testing groundwater and baseflow drought sensitivity to recharge

2021 ◽  
Author(s):  
Jost Hellwig ◽  
Michael Stoelzle ◽  
Kerstin Stahl
Keyword(s):  
Fractured Rock ◽  
Drought Severity ◽  
Severe Drought ◽  
Stress Tests ◽  
Drought Sensitivity ◽  
The North ◽  
Groundwater Response ◽  
Dry Spells ◽  
Groundwater Drought ◽  
Fractured Rock Aquifers

<p>Groundwater is the main source of freshwater and maintains streamflow during drought. Potential future groundwater and baseflow drought hazards depend on the systems' sensitivity to altered recharge conditions. We performed groundwater model experiments using three different generic stress tests to estimate the groundwater- and baseflow drought sensitivity to changes in recharge. The stress tests stem from a stakeholder co-design process that specifically followed the idea of altering known drought events from the past, i.e. asking whether altered recharge could have made a particular event worse. Here we show that groundwater responses to the stress tests are highly heterogeneous across Germany with groundwater heads in the North more sensitive to long-term recharge and in the Central German Uplands to short-term recharge variations. Baseflow droughts are generally more sensitive to intra-annual dynamics and baseflow responses to the stress tests are smaller compared to the groundwater heads. The groundwater drought recovery time is mainly driven by the hydrogeological conditions with slow (fast) recovery in the porous (fractured rock) aquifers. In general, a seasonal shift of recharge (i.e., less summer recharge and more winter recharge) will therefore have low effects on groundwater and baseflow drought severity. A lengthening of dry spells might cause much stronger responses, especially in regions with slow groundwater response to precipitation. Water management may need to consider the spatially different sensitivities of the groundwater system and the potential for more severe groundwater droughts in the large porous aquifers following prolonged meteorological droughts, particularly in the context of climate change projections indicating stronger seasonality and more severe drought events.</p>

Nickel toxicity in two durum wheat cultivars differing in drought sensitivity

1996 ◽  
Vol 19 (12) ◽  
pp. 1611-1627 ◽  
Author(s):  
T. Pandolfini ◽  
R. Gabbrielli ◽  
M. Ciscato
Keyword(s):  
Durum Wheat ◽  
Wheat Cultivars ◽  
Nickel Toxicity ◽  
Drought Sensitivity

scholarly journals Contrasting Signals of the Westerly Index and North Atlantic Oscillation over the Drought Sensitivity of Tree-Ring Chronologies from the Mediterranean Basin

Atmosphere ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 644 ◽  
Author(s):  
Pablo Casas-Gómez ◽  
Raúl Sánchez-Salguero ◽  
Pedro Ribera ◽  
Juan C. Linares
Keyword(s):  
North Atlantic Oscillation ◽  
Tree Ring ◽  
North Atlantic ◽  
Tree Species ◽  
Ring Width ◽  
Pinus Nigra ◽  
Western Mediterranean ◽  
Drought Severity ◽  
Drought Sensitivity ◽  
Westerly Index

Extreme drought events are becoming increasingly frequent and extended, particularly in Mediterranean drought-prone regions. In this sense, atmospheric oscillations patterns, such as those represented by the North Atlantic Oscillation (NAO) index and the Westerly Index (WI) have been widely proven as reliable proxies of drought trends. Here, we used the Standardized Precipitation–Evapotranspiration Index (SPEI), as a reliable indicator of drought, to investigate the drought sensitivity of tree-ring width data (TRW) from several long-lived tree species (Abies borisii-regis, Abies cilicica, Abies pinsapo, Cedrus atlantica, Cedrus libanii, Pinus nigra, Pinus heldreichii). NAO and WI relations with TRW were also investigated in order to identify potential non-stationary responses among those drought proxies. Our temporal and spatial analyses support contrasting Mediterranean dipole patterns regarding the drought sensitivity of tree growth for each tree species. The spatial assessment of NAO and WI relationships regarding SPEI and TRW showed on average stronger correlations westward with non-stationary correlations between annual WI index and TRW in all species. The results indicate that the drought variability and the inferred drought-sensitive trees species (e.g., C. atlantica) are related to the NAO and the WI, showing that TRW is a feasible proxy to long-term reconstructions of Westerly Index (WI) variability in the Western Mediterranean region. Spatial variability of drought severity suggests a complex association between NAO and WI, likely modulated by an east–west Mediterranean climate dipole.

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