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@ARTICLE{Hockun:820908,
      author       = {Hockun, Katja and Mollenhauer, Gesine and Ho, Sze Ling and
                      Hefter, Jens and Ohlendorf, Christian and Zolitschka, Bernd
                      and Mayr, Christoph and Lücke, Andreas and Schefuß, Enno},
      title        = {{U}sing distributions and stable isotopes of n-alkanes to
                      disentangle organic matter contributions to sediments of
                      {L}aguna {P}otrok {A}ike, {A}rgentina},
      journal      = {Organic geochemistry},
      volume       = {102},
      issn         = {0146-6380},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2016-06172},
      pages        = {110–119},
      year         = {2016},
      abstract     = {When using biomarkers such as n-alkanes as tools for
                      paleo-environmental reconstructions, it is imperative to
                      determine their specific sources for each setting. Toward
                      that goal, we analyzed a set of various potential organic
                      matter (OM) sources such as aquatic and terrestrial plants,
                      dust, and soils from Laguna Potrok Aike (LPA) and
                      surrounding areas in southern Patagonia. We determined chain
                      length distributions and hydrogen (δD) and carbon (δ13C)
                      isotopic compositions of n-alkanes of different OM sources
                      in order to quantify their relative contributions to lake
                      sediments. Our results reveal that the mid-chain n-alkane,
                      n-C23, is predominantly produced by submerged aquatic
                      plants, whereas long-chain n-alkanes (n-C29–n-C31) are
                      derived from various terrestrial sources. We estimated their
                      relative contributions to the sediment using two approaches,
                      i.e., based on the n-alkane distributions and their δD and
                      δ13C values. Both approaches result in similar estimates of
                      aquatic and terrestrial contributions for mid- and
                      long-chain n-alkanes to the sediment. $62–73\%$ of the
                      mid-chain n-C23 alkanes originate from aquatic sources while
                      $66–77\%$ of the long-chain n-alkanes originate from dust
                      and $14–30\%$ from terrestrial plants. Our study shows
                      that mid-chain n-alkanes such as the n-C23 alkane in LPA are
                      derived mainly from aquatic macrophytes and thus have the
                      potential to record changes in lake-water isotopic
                      composition. In contrast, the n-C29 alkane reflects the
                      isotopic signal of various terrestrial sources from southern
                      Patagonia.},
      cin          = {IBG-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000392534300011},
      doi          = {10.1016/j.orggeochem.2016.10.001},
      url          = {https://juser.fz-juelich.de/record/820908},
}