Research article - Peer-reviewed, 2011
Blue intensity in Pinus Sylvestris tree rings: A manual for a new palaeoclimate proxyCampbell, Rochelle; McCarroll, Danny; Robertson, Iain; Loader, Neil J.; Grudd, Håkan; Gunnarson, Björn
AbstractMinimum 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 Pious 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.
KeywordsDendrochronology; Scots pine; x-ray density; resin extraction; Fennoscandia
Published inTree-Ring Research
2011, volume: 67, number: 2, pages: 127-134
Publisher: TREE-RING SOC
Loader, Neil J.
Swedish University of Agricultural Sciences, Department of Forest Ecology and Management
UKÄ Subject classification
Environmental Sciences related to Agriculture and Land-use
URI (permanent link to this page)