Dependence of tree-ring, earlywood and latewood indices of Scots pine and Norway spruce on climatic factors in eastern Finland

A palaeotemperature record for the Finnish Lakeland based on microdensitometric variations in tree rings

“…These findings highlight the climate-growth relationships with a notable temperature control on the late growing-season wood cell thickening in this region (Briffa et al, 2002a;Helama et al, 2012aHelama et al, , 2013a. Radial growth, by contrast, and therefore the variation of wide and narrow annual rings (and especially width of their earlywood portion) is positively depending on precipitation in the early part of the growing season (Henttonen, 1984;Miina, 2000;Helama et al, 2005aHelama et al, , 2009c. Nearly identical dendroclimatic circumstances were exemplified to prevail for Scots pine in Central Caucasus where the growth of TRW responded positively with summer (June through July) precipitation and the production of MXD reflected even more strongly the warm-season (April through October) temperatures (Brugnoli et al, 2010).…”

Specific climatic signals recorded in earlywood and latewood δ¹⁸O of tree rings in southwestern China

“…Kagawa et al (2006a,b) reported that the stored photosynthate carried over from the previous year is likely to be used for the production of earlywood in spring and early summer (i.e., at the beginning of the growing season), whereas latewood is mainly composed of photoassimilate from the current year (i.e., the summer and autumn). Therefore, the climatic signals preserved in earlywood and latewood are expected to differ because of how they respond to their immediate environment, including climate influence, physical stresses, and other factors at the time of their formation (Larson, 1969;Miina, 2000).…”

“…Investigations of earlywood and latewood density have led to significant advances in tree-ring research (Parker and Henoch, 1971;Zhang, 1997;D'Arrigo and Jacoby, 1999;Lebourgeois, 2000;Miina, 2000;Fries and Ericsson, 2009). Additionally, a smaller but growing number of studies have investigated the climatic significance of tree-ring isotopes in earlywood and latewood (Epstein and Yapp, 1976;Leavitt and Long, 1991;Brabander et al, 1999;Li et al, 2005;Kagawa et al, 2006a,b;Kress et al, 2009).…”

The effects of thinning intensity and tree size on the growth response to annual climate in Cedrus atlantica: a linear mixed modeling approach

“…However, this latter approach often ignores the departure from the assumption of independent error terms induced by the multilevel (plot, tree, year) organization of tree-ring data, thus preventing valid statistical tests (Fortin et al 2007). As a result, Miina (2000) suggested the use of linear mixed models (LMMs) for treering standardization. In this approach, the fixed part of the model incorporates the individual growth responses, whereas the random effects represent the hierarchical structure of the data.…”