Seasonal variation of branch respiration of a treeline forming (Betula ermanii Cham.) and a montane (Fagus crenata Blume) deciduous broad-leaved tree species on Mt. Fuji, Japan

Gansert, Dirk; Backes, Katharina; Ozaki, Tomoaki; Kakubari, Yoshitaka

doi:10.1078/0367-2530-00030

Cited by 16 publications

(18 citation statements)

References 49 publications

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“…Strong relationships between E A and temperature (T) have been reported (e.g. Levy and Jarvis 1998;Damesin et al 2002;Gansert et al 2002). However, the relationship between E A and T has also been reported to be unclear (Edwards and McLaughlin 1978;Kakubari 1988;Kaipiainen et al 1998).…”

Section: Introductionmentioning

confidence: 92%

Stem respiration and carbon dioxide efflux of young Populus deltoides trees in relation to temperature and xylem carbon dioxide concentration

et al. 2007

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Oxidative respiration is strongly temperature driven. However, in woody stems, efflux of CO(2) to the atmosphere (E (A)), commonly used to estimate the rate of respiration (R (S)), and stem temperature (T (st)) have often been poorly correlated, which we hypothesized was due to transport of respired CO(2) in xylem sap, especially under high rates of sap flow (f (s)). To test this, we measured E (A), T (st), f (s) and xylem sap CO(2) concentrations ([CO(2)*]) in 3-year-old Populus deltoides trees under different weather conditions (sunny and rainy days) in autumn. We also calculated R (S) by mass balance as the sum of both outward and internal CO(2) fluxes and hypothesized that R (S) would correlate better with T (st) than E (A). We found that E (A) sometimes correlated well with T (st), but not on sunny mornings and afternoons or on rainy days. When the temperature effect on E (A) was accounted for, a clear positive relationship between E (A) and xylem [CO(2)*] was found. [CO(2)*] varied diurnally and increased substantially at night and during periods of rain. Changes in [CO(2)*] were related to changes in f (s) but not T (st). We conclude that changes in both respiration and internal CO(2) transport altered E (A). The dominant component flux of R (S) was E (A). However, on a 24-h basis, the internal transport flux represented 9-18% and 3-7% of R (S) on sunny and rainy days, respectively, indicating that the contribution of stem respiration to forest C balance may be larger than previously estimated based on E (A) measurements. Unexpectedly, the relationship between R (S) and T (st) was sometimes weak in two of the three trees. We conclude that in addition to temperature, other factors such as water deficits or substrate availability exert control on the rate of stem respiration so that simple temperature functions are not sufficient to predict stem respiration.

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Section: Introductionmentioning

confidence: 92%

Stem respiration and carbon dioxide efflux of young Populus deltoides trees in relation to temperature and xylem carbon dioxide concentration

et al. 2007

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“…The depletion of soluble sugars can cause respiration rates to decline in response to sustained hot temperatures, and on the other hand, accumulation of soluble sugars in cold-exposed plants can cause respiration rates to increase (Atkin and Tjoelker, 2003;Atkin et al, 2005;Kruse et al, 2011). This phenomenon of thermal acclimation has been observed in many tree species for leaves and roots, but it has rarely been examined for stems (but see Paembonan et al, 1991;Gansert et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…However, it indicated growth R s accounted for 80% of total F s in March, two months before any change in diameter was registered by dendrometers. Although cambial reactivation has been adduced to explain high F s before growth is observed (Rambal et al, 2004;Gaumont-Guay et al, 2006;Gruber et al, 2009), it is more likely that maintenance R s acclimated to low temperatures and caused high rates of F s in March (Paembonan et al, 1991;Gansert et al, 2002;Atkin andTjoelker, 2003).Anumberof mechanisms required to maintain stem functionality during winter might up regulate the respiratory metabolism (Cavender-Bares, 2005). Seasonal acclimation of maintenance R s to temperature and water stress can affect the partitioning of R s into growth and maintenance in climatic regions with ample seasonal variations in temperature and soil water availability.…”

Section: Seasonal Changes In Stem Co2 Effluxmentioning

confidence: 99%

Stem CO2 efflux and its contribution to ecosystem CO2 efflux decrease with drought in a Mediterranean forest stand

Rodríguez‐Calcerrada

Martin‐StPaul

Lempereur

et al. 2014

Agricultural and Forest Meteorology

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Keywords:Water deficit Respiration acclimation Carbohydrate Carbon balance Forest decline Net ecosystem exchangeThe rate of metabolic processes demanding energy in tree stems changes in relation with prevailing climatic conditions. Tree water availability can affect stem respiration through impacts on growth, phloem transport or maintenance of diverse cellular processes, but little is known on this topic. Here we monitored seasonal changes in stem CO2 efflux(F s ), radial growth, sap flow and non-structural carbohydrates in trees of Quercus ilex in a Mediterranean forest stand subjected since 2003 to either partial (33%) throughfall exclusion (£) or unchanged throughfall (C). F s increased exponentially during the day by an effect of temperature, although sap flow attenuated the increase in F s during the day time. Over the year, F s also increased exponentially with increasing temperatures, but F s computed at a standard temperature of 15 °C (F s 15 ) varied by almost 4-fold among dates. F s 15 was the highest after periods of stem growth and decreased as tree water availability decreased, similarly in Cand E treatments. The decline in F s 15 was not linked to a depletion of soluble sugars, which increased when water stress was higher. The proportion of ecosystem respiration attributed to the stems was highest following stem growth (23.3%) and lowest during the peak of drought (6.5%). High within-year variability in F s 15 makes unadvisable to pool annual data of F s vs. temperature to model F s at short time scales (hours to months) in Mediterranean-type forest ecosystems. We demonstrate that water availability is an important factor governing stem C0 2 efflux and suggest that trees in Mediterranean environments acclimate to seasonal drought by reducing stem respiration. Stem respiratory rates do not seem to change after a long-term increase in drought intensity, however.

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“…1.0 mg CO 2 g −1 h −1 ( Sveinbjörnsson et al, 1996). We found maximum values of mass-based wood respiration in branches which were five times lower than these reported measurements taken on the main stem, but comparable to branch respiration rates measured in a relatedBetula species ( Künstle and Mitscherlich, 1976, as cited in Gansert et al, 2002). When comparing night-time data, foliage respiration rates were, on average, five times higher than wood respiration as found elsewhere (e.g.…”

Section: Birchmentioning

confidence: 35%

Seasonal controls on net branch CO2 assimilation in sub-Arctic Mountain Birch (Betula pubescens ssp. czerepanovii (Orlova) Hamet-Ahti)

Poyatos¹,

Gornall²,

Mencuccini³

et al. 2012

Agricultural and Forest Meteorology

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Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Agricultural and Forest Meteorology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reected in this document. Changes may have been made to this work since it was submitted for publication. A denitive version was subsequently published in Agricultural and Forest Meteorology, 158-159, 2012, 10.1016/j.agrformet.2012.009. Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Keywords:Arctic; Branch bags; Light response curve; Phenology; Photosynthesis; Respiration; State of acclimation. Highlights:We measured growing season branch-level CO 2 fluxes in sub-Arctic Mountain Birch. Photosynthetic parameters dynamically acclimated to temperature within 5-7 days. Whole-branch respiration was higher during shoot growth and leaf expansion. Cumulative CO 2 fluxes averaged 640 g CO 2 m −2 across the two measured sites. Abstract:Forests at northern high latitudes are experiencing climate-induced changes in growth and productivity, but our knowledge on the underlying mechanisms driving seasonal CO 2 fluxes in northern boreal trees comes almost exclusively from ecosystem-level studies on evergreen conifers. In this study, we measured growing season whole-branch CO 2 exchange in a deciduous tree species of the tundra-taiga ecotone, Mountain Birch (Betula pubescens ssp. czerepanovii (Orlova) HametAhti), at two locations in northern Fennoscandia: Abisko (Sweden) and Kevo (Finland). We identified strong seasonal and environmental controls on both photosynthesis and respiration by analysing the parameters of light response curves. Branch-level photosynthetic parameters showed a delayed response to temperature, and, at Kevo, they were well described by sigmoid functions of the state of acclimation (S). Temperature acclimation was slower (time constant, τ = 7 days) for maximum photosynthesis (βbr) than for quantum efficiency (αbr) (τ = 5 days). High temperature-independent values of the respiration parameter (γbr) during leaf and shoot expansion were consistent with associated higher growth respiration rates. The ratio γbr/βbr was positively related to temperature, a result consistent with substrate-induced variations in leaf respiration rates at the branch level. Differences in stand structure and within-site variation in the active period of C uptake determined the spatiotemporal patterns in net assimilation amongst branc...

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Seasonal variation of branch respiration of a treeline forming (Betula ermanii Cham.) and a montane (Fagus crenata Blume) deciduous broad-leaved tree species on Mt. Fuji, Japan

Cited by 16 publications

References 49 publications

Stem respiration and carbon dioxide efflux of young Populus deltoides trees in relation to temperature and xylem carbon dioxide concentration

Stem respiration and carbon dioxide efflux of young Populus deltoides trees in relation to temperature and xylem carbon dioxide concentration

Stem CO2 efflux and its contribution to ecosystem CO2 efflux decrease with drought in a Mediterranean forest stand

Seasonal controls on net branch CO2 assimilation in sub-Arctic Mountain Birch (Betula pubescens ssp. czerepanovii (Orlova) Hamet-Ahti)

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