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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1111/nph.15136
|2 doi
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|a pubmed25n0943.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Earles, J Mason
|e verfasserin
|4 aut
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| 245 |
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|a Extreme mid-winter drought weakens tree hydraulic-carbohydrate systems and slows growth
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 08.10.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.
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|a Rising temperatures and extended periods of drought compromise tree hydraulic and carbohydrate systems, threatening forest health globally. Despite winter's biological significance to many forests, the effects of warmer and dryer winters on tree hydraulic and carbohydrate status have largely been overlooked. Here we report a sharp and previously unknown decline in stem water content of three conifer species during California's anomalous 2015 mid-winter drought that was followed by dampened spring starch accumulation. Recent precipitation and seasonal vapor pressure deficit (VPD) anomaly, not absolute VPD, best predicted the hydraulic patterns observed. By linking relative water content and hydraulic conductivity (Kh ), we estimated that stand-level Kh declined by 52% during California's 2015 mid-winter drought, followed by a 50% reduction in spring starch accumulation. Further examination of tree increment records indicated a concurrent decline of growth with rising mid-winter, but not summer, VPD anomaly. Thus, our findings suggest a seasonality to tree hydraulic and carbohydrate declines, with consequences for annual growth rates, raising novel physiological and ecological questions about how rising winter temperatures will affect forest vitality as climate changes
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a climate change
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|a drought
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|a forest
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|a hydraulics
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|a stress
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|a water
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|a winter
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|a Water
|2 NLM
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|a Starch
|2 NLM
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|a 9005-25-8
|2 NLM
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| 700 |
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|a Stevens, Jens T
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sperling, Or
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Orozco, Jessica
|e verfasserin
|4 aut
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| 700 |
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|a North, Malcolm P
|e verfasserin
|4 aut
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| 700 |
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|a Zwieniecki, Maciej A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1984
|g 219(2018), 1 vom: 01. Juli, Seite 89-97
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:219
|g year:2018
|g number:1
|g day:01
|g month:07
|g pages:89-97
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|u http://dx.doi.org/10.1111/nph.15136
|3 Volltext
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