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@ARTICLE{Heyng:171930,
      author       = {Heyng, Alexander and Mayr, Christoph and Lücke, Andreas
                      and Wissel, Holger and Striewski, Bernd},
      title        = {{L}ate {H}olocene hydrologic changes in northern {N}ew
                      {Z}ealand inferred from stable isotope values of aquatic
                      cellulose in sediments from lake {P}upuke},
      journal      = {Journal of paleolimnology},
      volume       = {51},
      number       = {4},
      issn         = {0921-2728},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2014-05484},
      pages        = {485-497},
      year         = {2014},
      abstract     = {Isotopic records of aquatic cellulose are becoming
                      increasingly important for palaeohydrological
                      reconstructions, but widespread application of this climate
                      proxy is hampered by minerogenic contamination that affects
                      oxygen isotope measures in cellulose. Few records of
                      isotopes in aquatic cellulose are available from
                      palaeoclimate archives in the Southern Hemisphere. In this
                      study, we used a new bulk cellulose extraction method and
                      determined the oxygen (δ18O) and carbon (δ13C) isotope
                      values in cellulose from a Holocene lake sediment core
                      segment (7.2–1.1 cal ka BP) from Lake Pupuke, Auckland,
                      New Zealand. Isotope values from modern, potential sources
                      of sedimentary cellulose revealed the aquatic origin of the
                      cellulose extracted from the core, and hence enabled
                      inference of past lake water δ18O values from the δ18O of
                      measured cellulose in the core. A shift to a more positive
                      water balance in the lake was identified around 2.8 cal ka
                      BP by a decrease in inferred lake water δ18O values. At
                      that time, greater epilimnetic primary productivity is
                      indicated by the higher δ13C values of sedimentary
                      cellulose. Greater divergence between the δ13C values of
                      cellulose and bulk organic matter suggests stronger
                      stratification of the lake, likely caused by greater
                      freshwater input. We discuss a possible link to a solar
                      minimum that occurred at that time.},
      cin          = {IBG-3},
      ddc          = {930},
      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:000333057800003},
      doi          = {10.1007/s10933-014-9769-3},
      url          = {https://juser.fz-juelich.de/record/171930},
}