NDLI: Some like it hot and some like it cold, but not too much: plant responses to climate extremes

Content Provider	Springer Nature Link
Author	Orsenigo, Simone Mondoni, Andrea Rossi, Grazia Abeli, Thomas
Copyright Year	2014
Abstract	Current climatic models predict increasing frequency and magnitude of extreme climatic events (ECEs). Ecological studies recognize the importance of these extremes as drivers of plant growth and mortality, as well as drivers of ecological and evolutionary processes. Here we review observational and experimental studies on ECEs on herbaceous plants and shrubs. Extreme events considered were heat waves, drought, advanced or delayed snowmelt, heavy rainfalls, frosts, pulsed watering and flooding. We analysed 39 studies dealing with direct response of plant to ECEs in different ecosystems, with a particular focus on cold ecosystems (alpine and arctic). Although the number of studies increases every year, the understanding of ecological consequences of ECEs is fragmentary. In general, ECEs affected negatively on physiological processes (efficiency of photosystem II, stomatal conductance and leaf water potential), productivity and reproduction, and had consequences on population demography and recruitment several years after ECE. Indeed, the plant responses to ECEs were species specific and depended on the plant life stage and the timing of ECE. In fact, the magnitude of the effect of ECEs decreased over the growing season. Drought had the most severe effect on plants, while heat waves had minor effect if water was available. The overlap of different ECEs had an additive effect (e.g. drought associated to heat-waves). In general, both neutral or positive plant responses were found and acclimation is possible. In some cases, ECEs exert a strong selective pressure on plant species.
Starting Page	677
Ending Page	688
Page Count	12
File Format	PDF
ISSN	13850237
Journal	Plant Ecology
Volume Number	215
Issue Number	7
e-ISSN	15735052
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-06-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Snowmelt Drought Extreme weather events Frost events Heat waves Rainfall Herbaceous plants Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Plant Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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