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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1111/nph.15024
|2 doi
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|a pubmed24n0935.xml
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|a (DE-627)NLM280569262
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|a (NLM)29397028
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Rowland, Lucy
|e verfasserin
|4 aut
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| 245 |
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|a Drought stress and tree size determine stem CO2 efflux in a tropical forest
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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
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|2 rdacarrier
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|a Date Completed 01.10.2019
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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 CO2 efflux from stems (CO2_stem ) accounts for a substantial fraction of tropical forest gross primary productivity, but the climate sensitivity of this flux remains poorly understood. We present a study of tropical forest CO2_stem from 215 trees across wet and dry seasons, at the world's longest running tropical forest drought experiment site. We show a 27% increase in wet season CO2_stem in the droughted forest relative to a control forest. This was driven by increasing CO2_stem in trees 10-40 cm diameter. Furthermore, we show that drought increases the proportion of maintenance to growth respiration in trees > 20 cm diameter, including large increases in maintenance respiration in the largest droughted trees, > 40 cm diameter. However, we found no clear taxonomic influence on CO2_stem and were unable to accurately predict how drought sensitivity altered ecosystem scale CO2_stem , due to substantial uncertainty introduced by contrasting methods previously employed to scale CO2_stem fluxes. Our findings indicate that under future scenarios of elevated drought, increases in CO2_stem may augment carbon losses, weakening or potentially reversing the tropical forest carbon sink. However, due to substantial uncertainties in scaling CO2_stem fluxes, stand-scale future estimates of changes in stem CO2 emissions remain highly uncertain
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a drought
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|a growth respiration
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|a maintenance respiration
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|a stem CO2 efflux
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|a tropical rainforests
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|a woody tissue respiration
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|a Carbon Dioxide
|2 NLM
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|a 142M471B3J
|2 NLM
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|a da Costa, Antonio C L
|e verfasserin
|4 aut
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|a Oliveira, Alex A R
|e verfasserin
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|a Oliveira, Rafael S
|e verfasserin
|4 aut
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|a Bittencourt, Paulo L
|e verfasserin
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|a Costa, Patricia B
|e verfasserin
|4 aut
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|a Giles, Andre L
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|a Sosa, Azul I
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|a Coughlin, Ingrid
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|a Godlee, John L
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|a Vasconcelos, Steel S
|e verfasserin
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|a Junior, João A S
|e verfasserin
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|a Ferreira, Leandro V
|e verfasserin
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|a Mencuccini, Maurizio
|e verfasserin
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|a Meir, Patrick
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 218(2018), 4 vom: 03. Juni, Seite 1393-1405
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:218
|g year:2018
|g number:4
|g day:03
|g month:06
|g pages:1393-1405
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|u http://dx.doi.org/10.1111/nph.15024
|3 Volltext
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|d 218
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|e 4
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|h 1393-1405
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