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

Maximo Larry Lopez Caceres, Sayako Nakano, Juan Pedro Ferrio, Mika Hayashi, Takeshi Nakatsuka, Masaki Sano, Toshiro Yamanaka, Yoshihiro Nobori

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    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 not a limitation but rather soil salinity.

    Original languageEnglish
    Pages (from-to)1-14
    Number of pages14
    JournalIsotopes in Environmental and Health Studies
    DOIs
    Publication statusAccepted/In press - 2018 Jul 14

    Fingerprint

    Tsunamis
    tree ring
    tsunami
    Soils
    Recovery
    Isotopes
    Nutrients
    Toxicity
    Coastal zones
    Nitrogen
    Carbon
    defense mechanism
    Sodium
    biomass allocation
    Availability
    foliage
    effect
    evaluation
    Water
    stable isotope

    Keywords

    • Carbon-13
    • coastal forests
    • isotope ecology
    • nitrogen-15
    • oxygen-18
    • soil salinity
    • tree-rings
    • tsunami

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Environmental Science(all)
    • Inorganic Chemistry

    Cite this

    Evaluation of the effect of the 2011 Tsunami on coastal forests by means of multiple isotopic analyses of tree-rings. / Lopez Caceres, Maximo Larry; Nakano, Sayako; Ferrio, Juan Pedro; Hayashi, Mika; Nakatsuka, Takeshi; Sano, Masaki; Yamanaka, Toshiro; Nobori, Yoshihiro.

    In: Isotopes in Environmental and Health Studies, 14.07.2018, p. 1-14.

    Research output: Contribution to journalArticle

    Lopez Caceres, Maximo Larry ; Nakano, Sayako ; Ferrio, Juan Pedro ; Hayashi, Mika ; Nakatsuka, Takeshi ; Sano, Masaki ; Yamanaka, Toshiro ; Nobori, Yoshihiro. / Evaluation of the effect of the 2011 Tsunami on coastal forests by means of multiple isotopic analyses of tree-rings. In: Isotopes in Environmental and Health Studies. 2018 ; pp. 1-14.
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    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 not a limitation but rather soil salinity.",
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