Retrospective bioindication of stratospheric ozone and ultraviolet radiation using hydroxycinnamic acid derivatives of herbarium samples of an aquatic liverwort

  1. Otero, S. 2
  2. Núñez-Olivera, E. 2
  3. Martínez-Abaigar, J. 2
  4. Tomás, R. 2
  5. Huttunen, S. 1
  1. 1 University of Oulu
    info

    University of Oulu

    Oulu, Finlandia

    ROR https://ror.org/03yj89h83

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Environmental Pollution

ISSN: 0269-7491

Año de publicación: 2009

Volumen: 157

Número: 8

Páginas: 2335-2344

Tipo: Artículo

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DOI: 10.1016/J.ENVPOL.2009.03.025 SCOPUS: 2-s2.0-67649268186 WoS: WOS:000267586200021 GOOGLE SCHOLAR

Otras publicaciones en: Environmental Pollution

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Resumen

We analyzed bulk UV absorbance of methanolic extracts and levels of five UV-absorbing compounds (hydroxycinnamic acid derivatives) in 135 herbarium samples of the liverwort Jungermannia exsertifolia subsp. cordifolia from northern Europe. Samples had been collected in 1850-2006 (96% in June-August). Both UV absorbance and compound levels were correlated positively with collection year. p-Coumaroylmalic acid (C1) was the only compound showing a significant (and negative) correlation with stratospheric ozone and UV irradiance in the period that real data of these variables existed. Stratospheric ozone reconstruction (1850-2006) based on C1 showed higher values in June than in July and August, which coincides with the normal monthly variation of ozone. Combining all the data, there was no long-term temporal trend from 1850 to 2006. Reconstructed UV showed higher values in June-July than in August, but again no temporal trend was detected in 1918-2006 using the joint data. This agrees with previous UV reconstructions. © 2009 Elsevier Ltd. All rights reserved.