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@ARTICLE{Weidner:13852,
author = {Weidner, K. and Heinich, I. and Helle, G. and Loffler, J.
and Neuwirth, B. and Schleser, G.H. and Vos, H.},
title = {{C}onsequences of larch budmonth outbreaks on the chlimate
significance of ring width and stable isotopes of larch},
journal = {Trees},
volume = {24},
issn = {0931-1890},
address = {Berlin},
publisher = {Springer},
reportid = {PreJuSER-13852},
pages = {399 - 409},
year = {2010},
note = {The authors wish to thank the staff of the Potsdam Dendro
Laboratory at the Helmholtz-Zentrum Deutsches
Geoforschungszentrum and the ICG-5 of the Forschungszentrum
Juelich GmbH, namely Carmen Burger, Werner Laumer and Holger
Wissel for their active assistance within this project. We
also thank Dr. Ulf Buntgen (WSL, Birmensdorf, CH) for his
support during the field work. This research was partly
funded by the EU FP5 project ISONET (Contract EV
K2-2001-00237) and EU FP6 project MILLENNIUM (GOCE 017008).},
abstract = {Tree-ring widths and stable carbon and oxygen isotopes of
five European larch trees from Lotschental, Switzerland were
investigated for the period 1900-2004. The objective was to
test the suitability of each of these parameters for
high-frequency climate reconstructions. This is of special
interest with regard to the problem of cyclic larch budmoth
(LBM) infestations of alpine larch trees. The results
clearly demonstrate that tree-ring width chronologies are
not suitable for high-frequency reconstructions because
infestations lead to variably reduced tree-ring increments,
largely suppressing climate signals. On the other hand, the
stable isotope chronologies proved less affected by larch
budmoth outbreaks, independent of the strength of the
infestations. The correlation of the carbon isotopes with
summer temperatures was especially high (r = 0.73) and with
precipitation lower but nevertheless significant (r =
-0.43). Oxygen isotopes were also correlated with summer
temperature (r = 0.46); however, a certain perturbation of
normal oxygen isotope signatures due to LBM outbreaks was
evident. Contrary to tree-ring widths, none of the LBM
outbreaks caused a significant disturbance of the current
year's isotopic climate signal and, most importantly, there
were no delayed effects in the following years. Thus, stable
carbon isotopes in tree-ring chronologies of the European
larch provide an excellent opportunity for high-frequency
temperature reconstructions.},
keywords = {J (WoSType)},
cin = {IEK-7},
ddc = {580},
cid = {I:(DE-Juel1)IEK-7-20101013},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK491},
shelfmark = {Forestry},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000277645700001},
doi = {10.1007/s00468-010-0421-1},
url = {https://juser.fz-juelich.de/record/13852},
}