Dependence of the aboveground respiration of hinoki cypress (Chamaecyparis obtusa) on tree size

Yokota, Taketo; Ogawa, Kazuharu; Hagihara, Akio

doi:10.1093/treephys/14.5.467

Cited by 30 publications

(23 citation statements)

References 13 publications

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“…The exponent f has been controversial, and various values have been reported based on studies of both animals and plants (15). Recently, it was suggested that f = 1 for relatively small plants, based on data for a 10 6 -fold range of body mass (16), including measurements using a whole-plant chamber (18,19). If f = 1, this means that whole-plant respiration scales isometrically with body mass, which may be reasonable in the case of herbaceous plants and small trees because nearly all of their cells, even those in the stems, should be active in respiration.…”

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confidence: 99%

“…Most data on whole-plant respiration have been acquired using indirect methods of estimation, limited to small plants, or focused on a narrow range of body sizes (2,5,15,16,18,19,(23)(24)(25)(26). Furthermore, most studies of plant metabolic scaling have been based on the aboveground parts and have ignored respiration of the roots, which is very difficult to measure (23).…”

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confidence: 99%

“…Accurate and efficient methods using whole-plant chambers to measure respiration rates have recently been developed (5,18,19,(24)(25)(26) and can be applied to assess metabolic scaling (Fig. 1).…”

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Mixed-power scaling of whole-plant respiration from seedlings to giant trees

Mori

Yamaji

Ishida

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

184

259

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The scaling of respiratory metabolism with body mass is one of the most pervasive phenomena in biology. Using a single allometric equation to characterize empirical scaling relationships and to evaluate alternative hypotheses about mechanisms has been controversial. We developed a method to directly measure respiration of 271 whole plants, spanning nine orders of magnitude in body mass, from small seedlings to large trees, and from tropical to boreal ecosystems. Our measurements include the roots, which have often been ignored. Rather than a single power-law relationship, our data are fit by a biphasic, mixed-power function. The allometric exponent varies continuously from 1 in the smallest plants to 3/4 in larger saplings and trees. The transition from linear to 3/4-power scaling may indicate fundamental physical and physiological constraints on the allocation of plant biomass between photosynthetic and nonphotosynthetic organs over the course of ontogenetic plant growth.allometry | metabolic scaling | mixed-power function | whole-plant respiration | simple-power function F rom the smallest seedlings to giant trees, the masses of vascular plants span 12 orders of magnitude in mass (1). The growth rates of most plants, which are generally presented in terms of net assimilation rates of CO 2 , are believed to be controlled by respiration (2, 3). Furthermore, many of the CO 2 -budget models of plant growth and carbon dynamics in terrestrial ecosystems are based on whole-plant respiration rates in relation to plant size (2, 4-7). Thus far, however, there have been few studies of wholeplant respiration over the entire range of plant size from tiny seedlings to large trees. The purpose of the present study was to quantify the allometric scaling of metabolism by directly measuring whole-plant respiration over a representative range of sizes.For the past century, the scaling of metabolic rate with body size has usually been described using an allometric equation, or simple power function, for the form (8-17)where Y is the respiratory metabolic rate (μmol s −1 ), F is a constant (μmol s −1 kg -f ), M is the body mass (kg), and f is the scaling exponent. The exponent f has been controversial, and various values have been reported based on studies of both animals and plants (15). Recently, it was suggested that f = 1 for relatively small plants, based on data for a 10 6 -fold range of body mass (16), including measurements using a whole-plant chamber (18,19). If f = 1, this means that whole-plant respiration scales isometrically with body mass, which may be reasonable in the case of herbaceous plants and small trees because nearly all of their cells, even those in the stems, should be active in respiration. However, it was suggested that f = 3/4 based originally on empirical studies of animal metabolism (8). This idea is consistent with the mechanistic models of resource distribution in vascular systems (10, 11), including the pipe model (20, 21) and models based on space-filling, hierarchical, fractal-like networks of br...

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Mixed-power scaling of whole-plant respiration from seedlings to giant trees

Mori

Yamaji

Ishida

et al. 2010

Proc. Natl. Acad. Sci. U.S.A.

184

259

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“…The respiration was nondestructively measured monthly throughout a year (from May 2007 to April 2008) with a modified enclosed standing tree method (cf. Ninomiya & Hozumi 1983a, Yokota et al 1994. The aerial parts of each sample tree were enclosed in a cylindrical chamber made of 0.1 to 0.2 mm thick polyvinyl chloride film.…”

Section: Methodsmentioning

confidence: 99%

“…bankruptcy (Yokota & Hagihara 1996). On the other hand, Ninomiya & Hozumi (1981), Ogawa et al (1985) and Yokota et al (1994) all found that the annual respiration of individual trees is proportional to their mass in young conifer stands (<10 yr old). In a broad summary of studies covering many species, Reich et al (2006) also showed that whole-plant respiration rate scales are approximately proportional to total mass.…”

Section: Size-dependence Of Metabolismmentioning

confidence: 99%

Seasonal variation in the size-dependent respiration of mangroves Kandelia obovata

Hoque¹,

Sharma²,

Suwa³

et al. 2010

Mar. Ecol. Prog. Ser.

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Despite the potential importance of mangrove forests in carbon cycling and coastal ecology, information on mangrove respiration is scanty. Aboveground nighttime respiration of mangrove Kandelia obovata trees at the northernmost limit of their distribution was measured monthly throughout a year to investigate size-dependence and seasonal variation in respiration. Six sample trees of different sizes were selected from a completely closed canopy stand. Respiration rate (r) of K. obovata trees at a monthly mean temperature increased with increasing mass (m). This tendency was described by means of the power function r = fm h , where f is the multiplying coefficient and h is the scaling exponent. The exponent values ranged from 0.723 to 1.085. In the cool winter (dormant season), the exponent h was close to 1.0, while in the warm summer (growing season) the exponent was closer to 3/4. Respiration varies more between seasons in small-sized trees than in large-sized trees. The relative increase in respiration from the winter dormant season to the summer growing season was large in the small-sized trees compared with that in the large-sized trees. The variation in respiration between the 2 seasons is explained on the basis of theories about resource harvesting and transport. Separation of summer respiration into growth and maintenance components is suggested to better understand the dependence of respiration on size and temperature.

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