Evaluation of the effect of the 2011 Tsunami on coastal forests by means of multiple isotopic analyses of tree-rings

Isotopes in Environmental and Health Studies
Maximo Larry Lopez CaceresYoshihiro Nobori

Abstract

The March 2011 Mega-Tsunami in eastern Japan damaged at different degrees the black pine (Pinus thunbergii) forests along the coast. In order to evaluate the recovery of black pine four years later, tree-ring samples from 9 trees for the period 2002-2014 were analyzed for ring growth and stable isotopes (δ13C, δ15N and δ18O). The results showed that annual tree-ring width decreased approximately 70 % from the year 2011 to 2014 compared to the period previous to the tsunami (2002-2010). The multiple isotopic analyses showed that the reduction in growth was caused by soil salinity that prompted stomatal closure and an abrupt increase of tree-ring δ13C. Sea water deposition in the soil did not affect tree-ring δ18O values. Two years after the tsunami, decreasing tree-ring δ13C values caused by apparently photosynthetic recovery did not translate into radial tree-growth, indicating a possible shift in carbon allocation to foliage and mainly roots as a defense mechanism to sodium toxicity. The dual δ13C-δ18O model explains neither the limited growth nor the subsequent recovery in δ13C. Similarly tree-ring δ15N indicated that there was no difference in nitrogen availability before and after the tsunami, suggesting that nutrients were...Continue Reading

References

Feb 14, 2002·Plant, Cell & Environment·R. Munns
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Paul M. HasegawaHans J. Bohnert
Nov 16, 2005·Analytical Chemistry·Julia B GaudinskiRoderick E Wasylishen
May 1, 2008·Annual Review of Plant Biology·Rana Munns, Mark Tester
Jan 29, 2011·Isotopes in Environmental and Health Studies·Chitoshi MizotaYoshihiro Nobori
Oct 19, 2011·Rapid Communications in Mass Spectrometry : RCM·M Larry Lopez CaceresYoshihiro Nobori
Oct 19, 2012·Tree Physiology·John Roden, Rolf Siegwolf
Sep 7, 2016·Plant Science : an International Journal of Experimental Plant Biology·Most Jannatul FardusiLuis Serrano
Mar 1, 2003·Functional Plant Biology : FPB·Manuela M ChavesJoão S Pereira

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Citations

Dec 6, 2020·The Science of the Total Environment·Gilberto BindaDamiano Monticelli

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