Long-term measurement of CO2 release from the aboveground parts of a hinoki forest tree in relation to air temperature

Paembonan, Samuel Arung; Hagihara, Akio; Hozumi, Kazuo

doi:10.1093/treephys/8.4.399

Cited by 64 publications

(43 citation statements)

References 5 publications

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“…Other studies report Q 10 values of 1.2 to 3 for Pinus banksiana [19], 1.5 to 3.2 for Chamaecyparis obtusa [34] and 1.9 to 2.6 for Picea abies [46]. Q 10 also varied within the trees, from 1.18 at breast height to 2.25 in the crown.…”

Section: Estimation Of Q 10mentioning

confidence: 93%

“…Stockfors and Linder [46] for Picea abies and Paembonan et al [34] for Chamaecyparis obtusa, observed a clear seasonal variation of Q 10 , but Linder and Troeng [24,25] did not find such variations in Pinus sylvestris.…”

Section: Estimation Of Q 10mentioning

confidence: 98%

“…Stockfors and Linder [46] found r G values between 0.11 and 0.2, depending on the methods used, but with the lower values for the mature-tissue method. They suggested that the use of the mature-tissue method can pose problems, since R M is assumed to be constant through the year, whereas some studies have shown that R M can acclimate to changes in temperature [25,34] or varies with [N] in the wood [28]. Moreover, similar regressions as those obtained by Method 2 were made by using total respiration instead of growth respiration (which is the result of the subtraction of maintenance respiration from total respiration) and the slopes were similar to those obtained by Method 2.…”

Section: Separation Of the Total Respiration Into Its Componentsmentioning

confidence: 99%

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Spatial and seasonal variations in stem respiration of beech trees (Fagus sylvatica)

et al. 2002

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-Stem respiration of adult beech (Fagus sylvatica L.) trees was measured in the field in eastern France at several levels in the crown and along the stem. Strong variations in respiration rates throughout the season and within the trees were mainly caused by gradients in stem temperature, growth rates and distribution of living cells. The higher respiration rates, were measured in the upper crown. During the non-growing season, maintenance respiration ranged between 7.2 and 528 µmol m -3 s -1 at breast height and in the upper crown, respectively. Q 10 increased along the stem from 1.

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Section: Estimation Of Q 10mentioning

confidence: 93%

Section: Estimation Of Q 10mentioning

confidence: 98%

Section: Separation Of the Total Respiration Into Its Componentsmentioning

confidence: 99%

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Spatial and seasonal variations in stem respiration of beech trees (Fagus sylvatica)

et al. 2002

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“…Under field conditions, the Q 10 of leaf R is higher in winter and autumn than in summer in evergreen species [Chamaecyparis obtusa (Paembonan et al 1991); Picea abies (Stockfors and Linder 1998); Eucalyptus pauciflora (Atkin et al 2000b); Pinus sylvestris (Zha et al 2003(Zha et al , 2005 and Pinus banksiana (MG Tjoelker, J Oleksyn, PB Reich unpublished data)], even when compared at the same measurement temperatures. However, Eucalyptus pauciflora showed little seasonal variation in Q 10 over much of the year (Atkin et al 2000b).…”

Section: Seasonal Variationmentioning

confidence: 99%

The hot and the cold: unravelling the variable response of plant respiration to temperature

Atkin¹,

Bruhn

Hurry

et al. 2005

Functional Plant Biol.

441

410

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This paper is part of The Evans Review series, named for Dr Lloyd Evans. The series contains reviews that are critical,state-of-the-art evaluations that aim to advance our understanding, rather than being exhaustive compilations of information, and are written by invitation.Abstract. When predicting the effects of climate change, global carbon circulation models that include a positive feedback effect of climate warming on the carbon cycle often assume that (1) plant respiration increases exponentially with temperature (with a constant Q 10 ) and (2) that there is no acclimation of respiration to long-term changes in temperature. In this review, we show that these two assumptions are incorrect. While Q 10 does not respond systematically to elevated atmospheric CO 2 concentrations, other factors such as temperature, light, and water availability all have the potential to influence the temperature sensitivity of respiratory CO 2 efflux. Roots and leaves can also differ in their Q 10 values, as can upper and lower canopy leaves. The consequences of such variable Q 10 values need to be fully explored in carbon modelling. Here, we consider the extent of variability in the degree of thermal acclimation of respiration, and discuss in detail the biochemical mechanisms underpinning this variability; the response of respiration to long-term changes in temperature is highly dependent on the effect of temperature on plant development, and on interactive effects of temperature and other abiotic factors (e.g. irradiance, drought and nutrient availability). Rather than acclimating to the daily mean temperature, recent studies suggest that other components of the daily temperature regime can be important (e.g. daily minimum and / or night temperature).In some cases, acclimation may simply reflect a passive response to changes in respiratory substrate availability, whereas in others acclimation may be critical in helping plants grow and survive at contrasting temperatures. We also consider the impact of acclimation on the balance between respiration and photosynthesis; although environmental factors such as water availability can alter the balance between these two processes, the available data suggests that temperature-mediated differences in dark leaf respiration are closely linked to concomitant differences in leaf photosynthesis. We conclude by highlighting the need for a greater process-based understanding of thermal acclimation of respiration if we are to successfully predict future ecosystem CO 2 fluxes and potential feedbacks on atmospheric CO 2 concentrations.

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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%

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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Long-term measurement of CO2 release from the aboveground parts of a hinoki forest tree in relation to air temperature

Cited by 64 publications

References 5 publications

Spatial and seasonal variations in stem respiration of beech trees (Fagus sylvatica)

Spatial and seasonal variations in stem respiration of beech trees (Fagus sylvatica)

The hot and the cold: unravelling the variable response of plant respiration to temperature

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

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