Diurnal and seasonal changes in stem increment and water use by yellow poplar trees in response to environmental stress.
Identifieur interne : 004466 ( Main/Exploration ); précédent : 004465; suivant : 004467Diurnal and seasonal changes in stem increment and water use by yellow poplar trees in response to environmental stress.
Auteurs : Samuel B. Mclaughlin [États-Unis] ; Stan D. Wullschleger ; Miloslav NosalSource :
- Tree physiology [ 0829-318X ] ; 2003.
Descripteurs français
- KwdFr :
- Arbres (croissance et développement), Arbres (physiologie), Eau (physiologie), Environnement (MeSH), Liriodendron (croissance et développement), Liriodendron (physiologie), Rythme circadien (physiologie), Saisons (MeSH), Tiges de plante (croissance et développement), Tiges de plante (physiologie), Transpiration des plantes (physiologie).
- MESH :
- croissance et développement : Arbres, Liriodendron, Tiges de plante.
- physiologie : Arbres, Eau, Liriodendron, Rythme circadien, Tiges de plante, Transpiration des plantes.
- Environnement, Saisons.
English descriptors
- KwdEn :
- MESH :
- chemical , physiology : Water.
- growth & development : Liriodendron, Plant Stems, Trees.
- physiology : Circadian Rhythm, Liriodendron, Plant Stems, Plant Transpiration, Trees.
- Environment, Seasons.
Abstract
To evaluate indicators of whole-tree physiological responses to climate stress, we determined seasonal, daily and diurnal patterns of growth and water use in 10 yellow poplar (Liriodendron tulipifera L.) trees in a stand recently released from competition. Precise measurements of stem increment and sap flow made with automated electronic dendrometers and thermal dissipation probes, respectively, indicated close temporal linkages between water use and patterns of stem shrinkage and swelling during daily cycles of water depletion and recharge of extensible outer-stem tissues. These cycles also determined net daily basal area increment. Multivariate regression models based on a 123-day data series showed that daily diameter increments were related negatively to vapor pressure deficit (VPD), but positively to precipitation and temperature. The same model form with slight changes in coefficients yielded coefficients of determination of about 0.62 (0.57-0.66) across data subsets that included widely variable growth rates and VPDs. Model R2 was improved to 0.75 by using 3-day running mean daily growth data. Rapid recovery of stem diameter growth following short-term, diurnal reductions in VPD indicated that water stored in extensible stem tissues was part of a fast recharge system that limited hydration changes in the cambial zone during periods of water stress. There were substantial differences in the seasonal dynamics of growth among individual trees, and analyses indicated that faster-growing trees were more positively affected by precipitation, solar irradiance and temperature and more negatively affected by high VPD than slower-growing trees. There were no negative effects of ozone on daily growth rates in a year of low ozone concentrations.
DOI: 10.1093/treephys/23.16.1125
PubMed: 14522718
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Precise measurements of stem increment and sap flow made with automated electronic dendrometers and thermal dissipation probes, respectively, indicated close temporal linkages between water use and patterns of stem shrinkage and swelling during daily cycles of water depletion and recharge of extensible outer-stem tissues. These cycles also determined net daily basal area increment. Multivariate regression models based on a 123-day data series showed that daily diameter increments were related negatively to vapor pressure deficit (VPD), but positively to precipitation and temperature. The same model form with slight changes in coefficients yielded coefficients of determination of about 0.62 (0.57-0.66) across data subsets that included widely variable growth rates and VPDs. Model R2 was improved to 0.75 by using 3-day running mean daily growth data. Rapid recovery of stem diameter growth following short-term, diurnal reductions in VPD indicated that water stored in extensible stem tissues was part of a fast recharge system that limited hydration changes in the cambial zone during periods of water stress. There were substantial differences in the seasonal dynamics of growth among individual trees, and analyses indicated that faster-growing trees were more positively affected by precipitation, solar irradiance and temperature and more negatively affected by high VPD than slower-growing trees. There were no negative effects of ozone on daily growth rates in a year of low ozone concentrations.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">14522718</PMID><DateCompleted><Year>2005</Year><Month>07</Month><Day>11</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0829-318X</ISSN><JournalIssue CitedMedium="Print"><Volume>23</Volume><Issue>16</Issue><PubDate><Year>2003</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Diurnal and seasonal changes in stem increment and water use by yellow poplar trees in response to environmental stress.</ArticleTitle><Pagination><MedlinePgn>1125-36</MedlinePgn></Pagination><Abstract><AbstractText>To evaluate indicators of whole-tree physiological responses to climate stress, we determined seasonal, daily and diurnal patterns of growth and water use in 10 yellow poplar (Liriodendron tulipifera L.) trees in a stand recently released from competition. Precise measurements of stem increment and sap flow made with automated electronic dendrometers and thermal dissipation probes, respectively, indicated close temporal linkages between water use and patterns of stem shrinkage and swelling during daily cycles of water depletion and recharge of extensible outer-stem tissues. These cycles also determined net daily basal area increment. Multivariate regression models based on a 123-day data series showed that daily diameter increments were related negatively to vapor pressure deficit (VPD), but positively to precipitation and temperature. The same model form with slight changes in coefficients yielded coefficients of determination of about 0.62 (0.57-0.66) across data subsets that included widely variable growth rates and VPDs. Model R2 was improved to 0.75 by using 3-day running mean daily growth data. Rapid recovery of stem diameter growth following short-term, diurnal reductions in VPD indicated that water stored in extensible stem tissues was part of a fast recharge system that limited hydration changes in the cambial zone during periods of water stress. There were substantial differences in the seasonal dynamics of growth among individual trees, and analyses indicated that faster-growing trees were more positively affected by precipitation, solar irradiance and temperature and more negatively affected by high VPD than slower-growing trees. 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Wullschleger</name></noCountry><country name="États-Unis"><region name="Tennessee"><name sortKey="Mclaughlin, Samuel B" sort="Mclaughlin, Samuel B" uniqKey="Mclaughlin S" first="Samuel B" last="Mclaughlin">Samuel B. Mclaughlin</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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