Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers
Effects of ambient and elevated temperature and atmospheric carbon dioxide concentration ([CO 2 ]) on CO 2 assimilation rate and the structural and phenological development of shoots during their first growing season were studied in 45-year-old Norway spruce trees ( Picea abies (L.) Karst.) enclosed...
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fthighwire:oai:open-archive.highwire.org:treephys:29/4/461 2023-05-15T17:44:58+02:00 Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers Hall, Marianne Räntfors, Mats Slaney, Michelle Linder, Sune Wallin, Göran 2009-04-01 00:00:00.0 text/html http://treephys.oxfordjournals.org/cgi/content/short/29/4/461 https://doi.org/10.1093/treephys/tpn047 en eng Oxford University Press http://treephys.oxfordjournals.org/cgi/content/short/29/4/461 http://dx.doi.org/10.1093/treephys/tpn047 Copyright (C) 2009, Oxford University Press Article TEXT 2009 fthighwire https://doi.org/10.1093/treephys/tpn047 2009-03-30T07:49:34Z Effects of ambient and elevated temperature and atmospheric carbon dioxide concentration ([CO 2 ]) on CO 2 assimilation rate and the structural and phenological development of shoots during their first growing season were studied in 45-year-old Norway spruce trees ( Picea abies (L.) Karst.) enclosed in whole-tree chambers. Continuous measurements of net assimilation rate (NAR) in individual buds and shoots were made from early bud development to late August in two consecutive years. The largest effect of elevated temperature ( T E ) was manifest early in the season as an earlier start and completion of shoot length development, and a 1–3-week earlier shift from negative to positive NAR compared with the ambient temperature ( T A ) treatments. The largest effect of elevated [CO 2 ] ( C E ) was found later in the season, with a 30% increase in maximum NAR compared with trees in the ambient [CO 2 ] treatments ( C A ), and shoots assimilating their own mass in terms of carbon earlier in the C E treatments than in the C A treatments. Once the net carbon assimilation compensation point (NACP) had been reached, T E had little or no effect on the development of NAR performance, whereas C E had little effect before the NACP. No interactive effects of T E and C E on NAR were found. We conclude that in a climate predicted for northern Sweden in 2100, current-year shoots of P. abies will assimilate their own mass in terms of carbon 20–30 days earlier compared with the current climate, and thereby significantly contribute to canopy assimilation during their first year. Text Northern Sweden HighWire Press (Stanford University) Norway Tree Physiology 29 4 461 481 |
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HighWire Press (Stanford University) |
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English |
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Article |
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Article Hall, Marianne Räntfors, Mats Slaney, Michelle Linder, Sune Wallin, Göran Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers |
topic_facet |
Article |
description |
Effects of ambient and elevated temperature and atmospheric carbon dioxide concentration ([CO 2 ]) on CO 2 assimilation rate and the structural and phenological development of shoots during their first growing season were studied in 45-year-old Norway spruce trees ( Picea abies (L.) Karst.) enclosed in whole-tree chambers. Continuous measurements of net assimilation rate (NAR) in individual buds and shoots were made from early bud development to late August in two consecutive years. The largest effect of elevated temperature ( T E ) was manifest early in the season as an earlier start and completion of shoot length development, and a 1–3-week earlier shift from negative to positive NAR compared with the ambient temperature ( T A ) treatments. The largest effect of elevated [CO 2 ] ( C E ) was found later in the season, with a 30% increase in maximum NAR compared with trees in the ambient [CO 2 ] treatments ( C A ), and shoots assimilating their own mass in terms of carbon earlier in the C E treatments than in the C A treatments. Once the net carbon assimilation compensation point (NACP) had been reached, T E had little or no effect on the development of NAR performance, whereas C E had little effect before the NACP. No interactive effects of T E and C E on NAR were found. We conclude that in a climate predicted for northern Sweden in 2100, current-year shoots of P. abies will assimilate their own mass in terms of carbon 20–30 days earlier compared with the current climate, and thereby significantly contribute to canopy assimilation during their first year. |
format |
Text |
author |
Hall, Marianne Räntfors, Mats Slaney, Michelle Linder, Sune Wallin, Göran |
author_facet |
Hall, Marianne Räntfors, Mats Slaney, Michelle Linder, Sune Wallin, Göran |
author_sort |
Hall, Marianne |
title |
Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers |
title_short |
Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers |
title_full |
Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers |
title_fullStr |
Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers |
title_full_unstemmed |
Carbon dioxide exchange of buds and developing shoots of boreal Norway spruce exposed to elevated or ambient CO2 concentration and temperature in whole-tree chambers |
title_sort |
carbon dioxide exchange of buds and developing shoots of boreal norway spruce exposed to elevated or ambient co2 concentration and temperature in whole-tree chambers |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://treephys.oxfordjournals.org/cgi/content/short/29/4/461 https://doi.org/10.1093/treephys/tpn047 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
http://treephys.oxfordjournals.org/cgi/content/short/29/4/461 http://dx.doi.org/10.1093/treephys/tpn047 |
op_rights |
Copyright (C) 2009, Oxford University Press |
op_doi |
https://doi.org/10.1093/treephys/tpn047 |
container_title |
Tree Physiology |
container_volume |
29 |
container_issue |
4 |
container_start_page |
461 |
op_container_end_page |
481 |
_version_ |
1766147658105225216 |