Oxygen isotope ratios of oak in east England: implications for reconstructing the isotopic composition of precipitation

Robertson, Iain; Waterhouse, J.; Barker, A. J.; Carter, A.H.C.; Switsur, V. R.

doi:10.1016/s0012-821x(01)00399-5

Cited by 108 publications

(75 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Significant correlations between time series of d 18 O from tree-ring cellulose and temperature, humidity, or precipitation d 18 O have previously been noted at an annual resolution by many researchers working in a range of environments (Luckman & Gray 1990;Lipp et al 1993;Buhay & Edwards 1995;Saurer, Aellen & Siegwolf 1997;Saurer, Borella & Leuenberger 1997;Anderson et al 1998Anderson et al , 2002Saurer, Cherubini & Siegwolf 2000;Robertson et al 2001). Although the many factors that can influence the d 18 O of the moisture prior to uptake by the roots of trees may be somewhat constant when viewed as annual means, changes can be highly variable over shorter time spans.…”

Section: Discussionmentioning

confidence: 88%

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Wright

Leavitt

2005

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 88%

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Wright

Leavitt

2005

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

“…Hill et al (1995) also showed that oxygen atoms of carbohydrates in stem tissue are rapidly exchanged with stem water that directly derives from root, before being re-synthesized into cellulose at xylem. Recent field observations, however, have revealed that δ 18 O of tree-ring cellulose is actually affected by the relative humidity in the growing season to a certain degree, although it is mainly controlled by δ 18 O of precipitation (Saurer et al, 1997;Anderson et al, 1998;Robertson et al, 2001). recently compiled a mechanistic model for interpretation of isotope ratios in tree-ring cellulose, where the fraction of oxygen that undergoes exchange with stem water before cellulose synthesis was estimated as 0.42 by comparison of the modeled and observed δ 18 O of tree-ring cellulose.…”

Section: Introductionmentioning

confidence: 99%

“…Especially in a forest with a heavy snow cover, precipitation in winter may take more than several months to penetrate into the root depths (Robertson et al, 2001). It is also necessary to investigate within-site and between-species variations of δ 18 O signal in order to clarify whether a small-scale heterogeneity in soil texture and/or root distribution affect isotopic ratios of water assimilated by a tree (Meinzer et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Oxygen and carbon isotopic ratios of tree-ring cellulose in a conifer-hardwood mixed forest in northern Japan

et al. 2004

View full text Add to dashboard Cite

Oxygen and carbon isotopic ratios (δ 18 O and δ 13 C) were analyzed for cellulose extracted from tree rings of 5 oak trees (Quercus crispula) and 4 fir trees (Abies sachalinensis) standing in a 1 ha plot of a sub-boreal conifer-hardwood mixed forest, northern Japan. 18 O, the inter-annual variations in δ 13 C did not possess any common trends among individual trees for either Q. crispula or A. sachalinesis, suggesting that the ecological effects, such as spatial heterogeneities in δ 13 C and/or concentration of CO 2 in canopy air and/or competition for light with neighboring trees, regulate the δ 13 C of photosynthetic products in each tree. Seasonal variations of the δ 18 O and δ 13 C within annual tree rings of Q. crispula showed random and cyclic characteristics, respectively. The difference between the annual patterns of δ 18 O and δ 13 C supports the idea that δ 18 O is controlled by some environmental factors, which change from year to year, but δ 13 C is primarily governed by physiological conditions of the tree itself, which repeat regularly in every growing season. The historical variation in δ 18 O of tree-ring cellulose in Q. crispula has negative correlations with those in both of winter and summer precipitation amounts, whereas it does not show any relationship with temperature, probably due to multiple source areas of water vapor for the precipitation at the studied area. Because the δ 18 O of precipitation in northern Japan is positively correlated with air temperature, the correlation between δ 18 O and winter precipitation suggests that, in a year of heavy snowfall, the soil in this forest retains larger amount of lower δ 18 O water derived from snowmelt, which is taken by roots of Q. crispula in summer. On the other hand, the negative correlation with summer precipitation cannot be elucidated by the δ 18 O of rainfall, but must be explained by a higher relative humidity in the growing season in a year of larger summer rainfall. Our results confirm the potential of δ 18 O of tree-ring cellulose to reconstruct past climate in a forest with a heavy snowfall, and suggest the importance of the hydrological knowledge in an atmosphere-soil-plant system for the utilization of treering δ 18 O in paleoenvironmental purposes.

show abstract

“…δ 13 C air ) used to calculate foliar (2002 y) and tree-ring isotopic discrimination chronologies (from 1920 to 2002 y) were extrapolated by recent works of Francey et al (1999) and Robertson et al (2001). Based on these data, we have recomputed the long term time course of tree-rings Δ 13 C values.…”

Section: Isotopic Analysismentioning

confidence: 99%

Tree-ring Δ13C reveals the impact of past forest management on water-use efficiency in a Mediterranean oak coppice in Tuscany (Italy)

Matteo¹,

Angelis²,

Brugnoli³

et al. 2010

Ann. For. Sci.

View full text Add to dashboard Cite

Abstract• The effects of thinning and heavy stand density reduction was investigated in Turkey oak (Quercus cerris L.) forests of central Italy, to evaluate the physiological responses and the growth status of trees that survived a past coppice cut and thinning to convert the stand to high-forest.• The working hypothesis was that a strong decrease in stand density would cause a decreasing in canopy-intrinsic water-use efficiency (measured as the ratio of CO 2 assimilation to stomatal conductance, A/g), thus an increase in tree-ring carbon isotopic discrimination (Δ 13 C).• The tree-ring Δ 13 C of the remaining trees ("survivors") was found to have significantly (P < 0.05) raised between year two and year seven since the coppice stand was thinned (high-forest conversion thinnings). This effect was mostly caused by a large decrease in tree-rings Δ 13 C at control site which was characterized by high density and competition by trees. An increase in survivors tree-rings Δ 13 C probably indicates an improved water availability, possibly induced by a decrease in competition and in stand density or a decrease in the precipitation intercepted by the canopy (i.e., a stronger increase in g over A since a decrease in A is highly unlikely). A change in foliar nitrogen, foliar Δ 13 C and content in chlorophylls was also recorded seven years after thinning.• Thinnings carried out to convert old abandoned coppices into high-forest stands induce short-term stimulation of Turkey oak growth by increasing light and water availability. We were able to make a detailed reconstruction of the impact of past silvicultural treatment on the stand using a tree-ring wood Δ 13 C time-series. Mots-clés :Quercus cerris / isotopes du carbone / cernes / accroissement de la surface terrière / traitements sylvicoles / taillis abandonnés Résumé -Le Δ 13 C des cernes révèle l'impact de la gestion forestière passée sur l'efficience d'utilisation de l'eau dans un taillis de chêne méditerranéen en Toscane (Italie).• Les effets de l'éclaircie et de la réduction importante de la densité du peuplement ont été étudiés dans des forêts de chêne de Turquie (Quercus cerris L.) de l'Italie centrale, afin d'évaluer les réac-tions physiologiques et l'état de croissance des arbres qui ont survécu à une coupe de taillis et à une éclaircie pour la conversion du peuplement en futaie.• L'hypothèse de travail était qu'une forte diminution de la densité du peuplement entraînerait une baisse de l'efficience intrinsèque d'utilisation de l'eau de la canopée (mesurée par le rapport de l'assimilation de CO 2 à la conductance stomatique, A/g), donc par une augmentation de la discrimination isotopique du carbone dans les cernes (Δ 13 C).• Les Δ 13 C des cernes des arbres restants (« survivants ») ont été trouvés significativement (P < 0, 05) augmentés entre deux ans et sept ans après que le peuplement de taillis a été éclairci (conversion en futaie). Cet effet a été principalement causé par une importante diminution du Δ 13 C des cernes dans le peuplement témoin qui se caracté...

show abstract

Oxygen isotope ratios of oak in east England: implications for reconstructing the isotopic composition of precipitation

Cited by 108 publications

References 38 publications

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Oxygen and carbon isotopic ratios of tree-ring cellulose in a conifer-hardwood mixed forest in northern Japan

Tree-ring Δ13C reveals the impact of past forest management on water-use efficiency in a Mediterranean oak coppice in Tuscany (Italy)

Contact Info

Product

Resources

About

Oxygen isotope ratios of oak in east England: implications for reconstructing the isotopic composition of precipitation

Cited by 108 publications

References 38 publications

Needle cell elongation and maturation timing derived from pine needle cellulose δ18O

Needle cell elongation and maturation timing derived from pine needle cellulose δ18O

Oxygen and carbon isotopic ratios of tree-ring cellulose in a conifer-hardwood mixed forest in northern Japan

Tree-ring Δ13C reveals the impact of past forest management on water-use efficiency in a Mediterranean oak coppice in Tuscany (Italy)

Contact Info

Product

Resources

About

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O