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- W1964584290 endingPage "1015" @default.
- W1964584290 startingPage "1001" @default.
- W1964584290 abstract "Background and Aims Extreme climatic events such as severe droughts are expected to increase with climate change and to limit grassland perennity. The present study aimed to characterize the adaptive responses by which temperate herbaceous grassland species resist, survive and recover from a severe drought and to explore the relationships between plant resource use and drought resistance strategies. Methods Monocultures of six native perennial species from upland grasslands and one Mediterranean drought-resistant cultivar were compared under semi-controlled and non-limiting rooting depth conditions. Above- and below-ground traits were measured under irrigation in spring and during drought in summer (50 d of withholding water) in order to characterize resource use and drought resistance strategies. Plants were then rehydrated and assessed for survival (after 15 d) and recovery (after 1 year). Key Results Dehydration avoidance through water uptake was associated with species that had deep roots (>1·2 m) and high root mass (>4 kg m−3). Cell membrane stability ensuring dehydration tolerance of roots and meristems was positively correlated with fructan content and negatively correlated with sucrose content. Species that survived and recovered best combined high resource acquisition in spring (leaf elongation rate >9 mm d−1 and rooting depth >1·2 m) with both high dehydration avoidance and tolerance strategies. Conclusions Most of the native forage species, dominant in upland grassland, were able to survive and recover from extreme drought, but with various time lags. Overall the results suggest that the wide range of interspecific functional strategies for coping with drought may enhance the resilience of upland grassland plant communities under extreme drought events." @default.
- W1964584290 created "2016-06-24" @default.
- W1964584290 creator A5001642298 @default.
- W1964584290 creator A5034930268 @default.
- W1964584290 creator A5056406774 @default.
- W1964584290 creator A5063308487 @default.
- W1964584290 creator A5086581767 @default.
- W1964584290 date "2015-04-07" @default.
- W1964584290 modified "2023-10-18" @default.
- W1964584290 title "What functional strategies drive drought survival and recovery of perennial species from upland grassland?" @default.
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- W1964584290 doi "https://doi.org/10.1093/aob/mcv037" @default.
- W1964584290 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4640119" @default.