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@ARTICLE{Dojani:56249,
      author       = {Dojani, S. and Lakatos, M. and Rascher, U. and Wanek, W.
                      and Lüttge, U. and Büdel, B.},
      title        = {{N}itrogen input by cyanobacterial biofilms on an inselberg
                      into a tropical rainforest in {F}rench {G}uiana},
      journal      = {Flora},
      volume       = {202},
      issn         = {1618-0585},
      address      = {München},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-56249},
      pages        = {521 - 529},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Inselbergs are isolated rock outcrops displaying high
                      heterogeneity in both soil formation and microclimatic
                      condition with high variation in plant biodiversity.
                      Vegetation patterns on inselbergs in the humid tropics range
                      from rocks covered with dense biofilms predominated by
                      cyanobacteria to high forest on deep soils. Along a similar
                      transect, we investigated N supply to the vegetation using
                      element and isotopic analyses of soil and biofilm samples
                      from an inselberg in French Guiana. An increase in N content
                      related to total dry weight $(N\%)$ in soils from the
                      inselberg peak to surrounding habitats was related to
                      changes in stable isotope composition (delta N-15). At the
                      inselberg peak cyanobacterial biofilms on bare rocks and
                      soils within small vegetation islands had similar delta N-15
                      values of -1.9 parts per thousand and - 1.3 parts per
                      thousand while delta N-15 of soils progressively increased
                      towards the primary rainforest up to 6 parts per thousand.
                      From the peak towards the base of the inselberg, the density
                      of higher plants and soil depth increased. Hence, soil N
                      cycling and N losses to the environment resulted in a
                      progressive increase of soil delta N-15. The distribution of
                      $N\%,$ delta N-15 and delta C-13 values suggest that the
                      main N supply for soils at and nearby the inselberg is
                      derived from cyanobacterial N-2 fixation through leaching
                      processes. (c) 2007 Elsevier GmbH. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000249447400003},
      doi          = {10.1016/j.flora.2006.12.001},
      url          = {https://juser.fz-juelich.de/record/56249},
}