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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.16051
|2 doi
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|a pubmed24n1115.xml
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|a (NLM)34927319
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|a DE-627
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|e rakwb
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|a eng
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1 |
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|a Hikino, Kyohsuke
|e verfasserin
|4 aut
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| 245 |
1 |
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|a High resilience of carbon transport in long-term drought-stressed mature Norway spruce trees within 2 weeks after drought release
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|c 2022
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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 24.02.2022
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|a Date Revised 24.02.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2021 The Authors. Global Change Biology published by John Wiley & Sons Ltd.
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|a Under ongoing global climate change, drought periods are predicted to increase in frequency and intensity in the future. Under these circumstances, it is crucial for tree's survival to recover their restricted functionalities quickly after drought release. To elucidate the recovery of carbon (C) transport rates in c. 70-year-old Norway spruce (Picea abies [L.] KARST.) after 5 years of recurrent summer droughts, we conducted a continuous whole-tree 13 C labeling experiment in parallel with watering. We determined the arrival time of current photoassimilates in major C sinks by tracing the 13 C label in stem and soil CO2 efflux, and tips of living fine roots. In the first week after watering, aboveground C transport rates (CTR) from crown to trunk base were still 50% lower in previously drought-stressed trees (0.16 ± 0.01 m h-1 ) compared to controls (0.30 ± 0.06 m h-1 ). Conversely, CTR below ground, that is, from the trunk base to soil CO2 efflux were already similar between treatments (c. 0.03 m h-1 ). Two weeks after watering, aboveground C transport of previously drought-stressed trees recovered to the level of the controls. Furthermore, regrowth of water-absorbing fine roots upon watering was supported by faster incorporation of 13 C label in previously drought-stressed (within 12 ± 10 h upon arrival at trunk base) compared to control trees (73 ± 10 h). Thus, the whole-tree C transport system from the crown to soil CO2 efflux fully recovered within 2 weeks after drought release, and hence showed high resilience to recurrent summer droughts in mature Norway spruce forests. This high resilience of the C transport system is an important prerequisite for the recovery of other tree functionalities and productivity
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|a Journal Article
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|a Picea abies
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|a 13C labeling
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|a climate change
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| 650 |
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|a forest ecosystem
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| 650 |
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|a phloem
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| 650 |
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|a photosynthesis
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| 650 |
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|a recovery
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| 650 |
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|a soil CO2 efflux
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| 650 |
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|a stem CO2 efflux
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| 650 |
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|a watering
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| 650 |
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|a Carbon
|2 NLM
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| 650 |
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|a 7440-44-0
|2 NLM
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| 700 |
1 |
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|a Danzberger, Jasmin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Riedel, Vincent P
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Rehschuh, Romy
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ruehr, Nadine K
|e verfasserin
|4 aut
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| 700 |
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|a Hesse, Benjamin D
|e verfasserin
|4 aut
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| 700 |
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|a Lehmann, Marco M
|e verfasserin
|4 aut
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| 700 |
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|a Buegger, Franz
|e verfasserin
|4 aut
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| 700 |
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|a Weikl, Fabian
|e verfasserin
|4 aut
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| 700 |
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|a Pritsch, Karin
|e verfasserin
|4 aut
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| 700 |
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|a Grams, Thorsten E E
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 28(2022), 6 vom: 14. März, Seite 2095-2110
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:28
|g year:2022
|g number:6
|g day:14
|g month:03
|g pages:2095-2110
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|u http://dx.doi.org/10.1111/gcb.16051
|3 Volltext
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