Blue Intensity In Pinus sylvestris Tree Rings: A Manual for A New Palaeoclimate Proxy

Abstract Minimum blue intensity is a reflected light imaging technique that provides an inexpensive, robust and reliable surrogate for maximum latewood density. In this application it was found that temperature reconstructions from resin-extracted samples of Pinus sylvestris (L.) from Fennoscandia provide results equivalent to conventional x-ray densitometry. This paper describes the implementation of the blue intensity method using commercially available software and a flat-bed scanner. A calibration procedure is presented that permits results obtained by different laboratories, or using different scanners, to be compared. In addition, the use of carefully prepared and chemically treated 10-mm-diameter cores are explored; suggesting that it may not be necessary to produce thin laths with the rings aligned exactly perpendicular to the measurement surface.

[1]  J. Rolfe,et al.  Multiple stable isotopes from oak trees in southwestern Scotland and the potential for stable isotope dendroclimatology in maritime climatic regions , 2008 .

[2]  D. McCarroll,et al.  Stable isotopes in tree rings. , 2004 .

[3]  K. Treydte,et al.  Climate signals in tree-ring width, density and δ13C from larches in Eastern Siberia (Russia) , 2008 .

[4]  P. Sheppard,et al.  Solving the magnification irony in microscope-based reflected light image analysis of conifer tree rings , 2006 .

[5]  F. Telewski,et al.  Measuring Maximum Latewood Density By Image Analysis At The Cellular Level , 2007 .

[6]  P. Fratzl,et al.  Effect of growth rate on mean microfibril angle and cross-sectional shape of tracheids of Norway spruce , 2004, Trees.

[7]  K. Briffa,et al.  Radiodensitometric-dendroclimatological conifer chronologies from Lapland (Scandinavia) and the Alps (Switzerland) , 2008 .

[8]  M. Parker,et al.  The Use of Engelmann Spruce Latewood Density for Dendrochronological Purposes , 1971 .

[9]  D. McCarroll,et al.  A critical evaluation of multi‐proxy dendroclimatology in northern Finland , 2011 .

[10]  A. Rindby,et al.  Batch measurements of wood density on intact or prepared drill cores using x-ray microdensitometry , 2001, Wood Science and Technology.

[11]  W. Müller‐Stoll.  Photometrische Holzstruktur-Untersuchungen , 1947, Planta.

[12]  Fritz H. Schweingruber,et al.  Tree-ring width and density data around the Northern Hemisphere: Part 1, local and regional climate signals , 2002 .

[13]  F. Schweingruber.  Tree Rings: Basics and Applications of Dendrochronology , 1988 .

[14]  L. Graumlich,et al.  Reflected-light image analysis of conifer tree rings for reconstructing climate , 1996 .

[15]  A. Kirdyanov,et al.  The Relationship Between Variability of Cell Wall Mass of Earlywood and Latewood Tracheids in Larch Tree-Rings, the Rate of Tree-Ring Growth and Climatic Changes , 2003 .

[16]  J. Lindeberg.  X-ray Based Tree Ring Analyses , 2004 .

[17]  M. K. Cleaveland.  Climatic Response of Densitometric Properties in Semiarid Site Tree Rings , 1986 .

[18]  Risto Jalkanen,et al.  Blue intensity in Pinus sylvestris tree-rings: developing a new palaeoclimate proxy , 2007 .

[19]  李幼升,et al.  Ph , 1989 .

[20]  Adrian Luckman,et al.  Blue Reflectance Provides a Surrogate for Latewood Density of High-latitude Pine Tree Rings , 2002 .

[21]  D. Eckstein,et al.  Climatic signal of earlywood vessels of oak on a maritime site. , 2003, Tree physiology.

[22]  H. Grudd.  Torneträsk tree-ring width and density ad 500–2004: a test of climatic sensitivity and a new 1500-year reconstruction of north Fennoscandian summers , 2008 .

[23]  Charles J. Robinove,et al.  Digital image measurement of the area and anatomical structure of tree rings , 1986 .

[24]  Michael Friedrich,et al.  The 12,460-Year Hohenheim Oak and Pine Tree-Ring Chronology from Central Europe—A Unique Annual Record for Radiocarbon Calibration and Paleoenvironment Reconstructions , 2004, Radiocarbon.