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@ARTICLE{Zhu:171921,
      author       = {Zhu, Jiayun and Lücke, Andreas and Wissel, Holger and
                      Mayr, Christoph and Ohlendorf, Christian and Zolitschka,
                      Bernd},
      title        = {{C}haracterizing oxygen isotope variability and host water
                      relation of modern and subfossil aquatic mosses},
      journal      = {Geochimica et cosmochimica acta},
      volume       = {130},
      issn         = {0016-7037},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2014-05477},
      pages        = {212-228},
      year         = {2014},
      abstract     = {A field survey in southern Patagonia has shown a highly
                      significant linear correlation between δ18O values of
                      cellulose extracted from modern submerged aquatic mosses and
                      their respective host waters. The amount of aquatic moss
                      remains preserved in lake sediments is, however, often not
                      sufficient for cellulose extraction for oxygen isotope
                      analysis. By comparison, the δ18O analysis of bulk organic
                      matter of aquatic mosses requires much less material, but
                      further pretreatment due to inorganic contamination is
                      needed. In this study we extend the cellulose δ18O approach
                      to aquatic moss organic matter and aquatic vascular plants
                      in order to explore the relation between δ18O values of
                      aquatic plants and host waters. Furthermore, we focus on a
                      comparison between cellulose and pretreated organic matter
                      of subfossil aquatic mosses and vascular plants with regard
                      to their δ18O and δ13C values from Laguna Potrok Aike, a
                      southern Patagonian maar lake. Subfossil remains of two
                      representative submerged aquatic moss species and different
                      moss parts (branches and leaves) are handpicked and an
                      investigation on moss organic matter, moss cellulose and
                      cellulose from coarse plant debris is performed in pairs
                      within a moss-rich sediment section. Our results show that,
                      similar to moss cellulose, a significant linear correlation
                      exists between δ18O values of purified moss organic matter
                      and their respective host waters. Past lake water δ18O
                      values can thus be inferred from moss cellulose as well as
                      from purified moss organic matter with comparable precision.
                      Only a marginal 18O enrichment (ca. 1‰) is observed for
                      δ18O values of cellulose from aquatic vascular plants
                      compared to that of aquatic mosses, whereas δ13C values of
                      aquatic vascular plant cellulose show a pronounced 13C
                      enrichment (ca. 20‰) relative to aquatic mosses.
                      Noticeable differences in δ18O values of organic matter
                      from different moss species suggest a monospecific analysis
                      for the reconstruction of lake water δ18O values based on
                      moss organic matter. Separation of different submerged
                      aquatic moss parts (branches and leaves) is, however, not
                      necessary due to their indistinguishable δ18O values. The
                      paired investigation demonstrates a consistent variation of
                      lake water δ18O values inferred from moss organic matter,
                      moss cellulose and, within limitations, cellulose from
                      coarse plant debris. This offers the potential for combining
                      results from different moss organic fractions (cellulose,
                      purified OM) into a composite lake water δ18O record to
                      achieve high-resolution paleoenvironmental reconstructions.
                      Despite several open issues, the approach could be
                      successfully applied to other lakes worldwide where aquatic
                      moss remains are preserved.},
      cin          = {IBG-3},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {246 - Modelling and Monitoring Terrestrial Systems: Methods
                      and Technologies (POF2-246) / 255 - Terrestrial Systems:
                      From Observation to Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF2-246 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000332405700014},
      doi          = {10.1016/j.gca.2014.01.013},
      url          = {https://juser.fz-juelich.de/record/171921},
}