The ?<sup>13</sup>C of Scots pine (<i>Pinus sylvestris L.</i>) needles: spatial 
and temporal variations

Brendel, Oliver; Handley, Linda L.; Griffiths, Howard

doi:10.1051/forest:2003001

Cited by 23 publications

(19 citation statements)

References 32 publications

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“…In the lower and middle canopy, SLA decreased with increasing L B (P<0.001), referring probably to growing effects of hydraulic constraints due to longer path length within branches. The data obtained in two pine species confirms the effects of hydraulic limitations related to branch length (Brendel et al 2003;Samuelson et al 2003): there was a positive relationship between foliar δ 13 C and trunkneedle distance on the branch. In the upper canopy we observed an opposite trend − SLA increased with increasing L B (P<0.01).…”

Section: Radial Variation and Variation With Branch Orderssupporting

confidence: 82%

Spatial variation in sapwood area to leaf area ratio and specific leaf area within a crown of silver birch

Sellin

Kupper

2006

Trees

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Spatial variation in sapwood area to leaf area ratio (Huber value, HV) and specific leaf area (SLA) was examined in branches of closed-canopy trees of silver birch (Betula pendula Roth). HV increased basipetally within a crown and decreased with increasing branch order, but exhibited no significant radial trend along a primary branch. HV was primarily determined by branch position in a crown and branch diameter at the sampling point, being independent of the size of the tree and branch. Greater HV in the lower-crown branches is considered a means to mitigate differences in hydraulic transport capacity between the branches located in different canopy layers. Beside branch position and sampling location on a branch, SLA depended significantly on several other variables characterising tree and branch size. SLA increased basipetally within a crown and along a primary branch, but exhibited no significant trend with branch orders. Because height caused leaf area (A L ) to diminish more rapidly than leaf dry weight, A L primarily determined the vertical variation in SLA.

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Section: Radial Variation and Variation With Branch Orderssupporting

confidence: 82%

Spatial variation in sapwood area to leaf area ratio and specific leaf area within a crown of silver birch

Sellin

Kupper

2006

Trees

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“…3a and c), which were correlated with the effect of rainfall and the change in the relative fractions of structural and nonstructural carbohydrates with the variation in d 13 C (Li et al 2007). Similar results were reported by Brendel et al (2003) in Pinus sylvestris L. The lack of significant differences in the specific leaf area or dry matter content of the current-year-old needles between the two years for both age groups of trees (Fig. 3) indicated that leaf morphology was insensitive to the rainfall variation, because of longterm adaptation in leaf morphology.…”

Section: Differences In Iwue Between the Dry And Wet Yearssupporting

confidence: 91%

Intrinsic water use efficiency in wet and dry years at young and old plantations of Pinus sylvestris var. mongolica in semiarid China

Song

Zhu

et al. 2015

Journal of Forest Research

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Rainfall is the most important factor influencing the growth and survival of Mongolian pine (Pinus sylvestris var. mongolica), but the responses of these trees to extremes of rainfall are still poorly understood. Intrinsic water use efficiency (iWUE, as proxied by d 13 C), specific leaf area, dry matter content, soil water content and groundwater level were measured in 18-year-old and 38-year-old Mongolian pine stands (young and old) during two conservative years with extreme rainfalls (280 mm, 2009; and 580 mm, 2010). The results indicated that young trees displayed higher d 13 C values of current-year-old needles in 2009 than in 2010, but no difference was detected in old trees. For both age groups of trees, no significant differences were observed in the specific leaf area and dry matter content of current-year-old needles between the two years. These results suggested that the iWUE of young trees was more sensitive to the extreme rainfall than that of the old trees. The groundwater level remained within vertical root distributions for old trees. In 2009, the mean d 13 C value of the current-year-old needles was higher in young trees than in old trees, but this pattern was reversed in 2010. In conclusion, young trees improved iWUE to acclimate to extremely low rainfall, whereas old trees maintained a lower iWUE, possibly because of the uptake of groundwater.

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“…Stems and roots usually have d 13 C values 2-5& higher than leaves (Leavitt and Long 1986;Medina et al 1986;Damesin and Lelarge 2003). If juvenile leaves used the more 13 C-enriched carbon stored in the stems during leaf expansion, then their d 13 C values would be consequently more positive (Brendel et al 2003). With progress of the growing season, the decrease of foliar d 13 C values is associated with a change in the relative proportion and activity of in vitro phosphoenolpyruvate carboxylase (PEPC) and ribulose bisphosphate carboxylase-oxygenase (Rubisco) in leaves .…”

Section: Temporal Variation and Leaf Developmentmentioning

confidence: 97%

Temporal variation of δ13C of larch leaves from a montane boreal forest in Mongolia

Tsujimura

Sugimoto

et al. 2007

Trees

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This paper reports the temporal variation (2002)(2003)(2004) in foliar d 13 C values, which are indicative of long-term integrated photosynthetic and water use characteristics, of Siberian larch (Larix sibirica Ledeb.) trees in a montane forest at Mongonmorit, NE Mongolia. At the stand, the d 13 C value for understory shaded leaves was more negative by 2& on average than that for sunlit leaves sampled concurrently from open and sun-exposed environments in a forest gap. The d 13 C value of both sunlit and shaded leaves showed pronounced intra-but relatively small inter-seasonal variations. The d 13 C value was more positive for juvenile than mature leaves. We conjecture that juvenile leaves may derive carbon reserves in woody tissues (e.g., stems). Regardless of leaf habitats, the d 13 C value was also affected by insect herbivores occurred in mid summer of 2003, being more negative in newly emerging leaves from the twigs after defoliation than in non-defoliated mature leaves. This pattern seems to contrast with that for the juvenile leaves in the early growing season. We surmise that the newly emerging leaves used stored organic carbon that was depleted due to fractionation during remobilization and translocation for leaf regrowth. There was also intra-and inter-seasonal variation in the foliar N concentrations and C:N ratios. A good positive (negative) correlation between the foliar d 13 C values and N concentrations (C:N ratios) was also observed for both sunlit and shaded leaves, suggesting that the relationship between water and nitrogen use is a crucial factor affecting the plant carbon-water relationship in this mid latitude forest with a cold semiarid climate. Our isotopic data demonstrate that the larches in NE Mongolia exhibits relatively higher water use efficiency with a distinct withinseason variability.

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The ?¹³C of Scots pine (Pinus sylvestris L.) needles: spatial and temporal variations

Cited by 23 publications

References 32 publications

Spatial variation in sapwood area to leaf area ratio and specific leaf area within a crown of silver birch

Spatial variation in sapwood area to leaf area ratio and specific leaf area within a crown of silver birch

Intrinsic water use efficiency in wet and dry years at young and old plantations of Pinus sylvestris var. mongolica in semiarid China

Temporal variation of δ13C of larch leaves from a montane boreal forest in Mongolia

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The ?13C of Scots pine (Pinus sylvestris L.) needles: spatial and temporal variations

Cited by 23 publications

References 32 publications

Spatial variation in sapwood area to leaf area ratio and specific leaf area within a crown of silver birch

Spatial variation in sapwood area to leaf area ratio and specific leaf area within a crown of silver birch

Intrinsic water use efficiency in wet and dry years at young and old plantations of Pinus sylvestris var. mongolica in semiarid China

Temporal variation of δ13C of larch leaves from a montane boreal forest in Mongolia

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The ?¹³C of Scots pine (Pinus sylvestris L.) needles: spatial and temporal variations