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Beyond isohydricity :
Beyond isohydricity : The role of environmental variability in determining plant drought responses
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Feng, Xue (author)
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Ackerly, David D. (author)
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Dawson, Todd E. (author)
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- Manzoni, Stefano (author)
- Stockholms universitet,Institutionen för naturgeografi,Stockholm University
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McLaughlin, Blair (author)
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Skelton, Robert P. (author)
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- Vico, Giulia (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtproduktionsekologi,Department of Crop Production Ecology
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Weitz, Andrew P. (author)
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Thompson, Sally E. (author)
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(creator_code:org_t)
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- 2019-01-07
- 2019
- English.
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In: Plant, Cell and Environment. - : Wiley. - 0140-7791 .- 1365-3040. ; 42:4, s. 1104-1111
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https://rss.onlineli...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Despite the appeal of the iso/anisohydric framework for classifying plant drought responses, recent studies have shown that such classifications can be strongly affected by a plant's environment. Here, we present measured in situ drought responses to demonstrate that apparent isohydricity can be conflated with environmental conditions that vary over space and time. In particular, we (a) use data from an oak species (Quercus douglasii) during the 2012-2015 extreme drought in California to demonstrate how temporal and spatial variability in the environment can influence plant water potential dynamics, masking the role of traits; (b) explain how these environmental variations might arise from climatic, topographic, and edaphic variability; (c) illustrate, through a common garden thought experiment, how existing trait-based or response-based isohydricity metrics can be confounded by these environmental variations, leading to Type-1 (false positive) and Type-2 (false negative) errors; and (d) advocate for the use of model-based approaches for formulating alternate classification schemes. Building on recent insights from greenhouse and vineyard studies, we offer additional evidence across multiple field sites to demonstrate the importance of spatial and temporal drivers of plants' apparent isohydricity. This evidence challenges the use of isohydricity indices, per se, to characterize plant water relations at the global scale.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
Keyword
- classification
- intrinsic traits
- plant water potentials
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Feng, Xue
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Ackerly, David D ...
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Dawson, Todd E.
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Manzoni, Stefano
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McLaughlin, Blai ...
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Skelton, Robert ...
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show more...
-
Vico, Giulia
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Weitz, Andrew P.
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Thompson, Sally ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Botany
- Articles in the publication
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Plant, Cell and ...
- By the university
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Stockholm University
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Swedish University of Agricultural Sciences