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@ARTICLE{Anhuf:834459,
      author       = {Anhuf, Dieter and Schleser, Gerhard, Hans},
      title        = {{T}ree ring studies in the tropics and subtropics},
      journal      = {Erdkunde},
      volume       = {71},
      number       = {1},
      issn         = {0014-0015},
      address      = {Bonn},
      publisher    = {Geographisches Inst., Univ. Bonn},
      reportid     = {FZJ-2017-04410},
      pages        = {1 - 4},
      year         = {2017},
      abstract     = {According to the Intergovernmental Panel on Climate Change
                      the global surface temperature has continuously risen since
                      1861. Increasing temperatures combined with changing
                      precipitation patterns are strong indications for a more
                      active and more intense hydrological cycle in the coming
                      decades. In this respect, it is undisputed that the tropical
                      regions are important for the global climate system. The
                      reaction of tropical forests to enhanced atmospheric CO2
                      concentrations plays a pivotal role for the land carbon and
                      the land water cycle. Currently our understanding of the
                      physiological reactions such as growth response of tropical
                      trees to rising atmospheric CO2 concentration, partly
                      related to water-use-efficiency (WUE) and climate change is
                      still rather poor and controversially discussed (Frank et
                      al. 2015). Modifications in their carbon uptake and
                      transpiration rate have inevitably global consequences. It
                      is still unclear if tropical trees assimilate more CO2 with
                      constant or slightly reduced water losses in a CO2 richer
                      world or if the carbon gain remains almost unchanged with
                      reduced transpiration.Tree-rings are well suited for
                      environmental investigations with much potential for
                      verifications of their well-being. Tree rings are mostly
                      annually resolved, contain environmental information, are
                      easily sampled and as such valuable archives. Growth
                      limiting factors control the development of trees allowing
                      the derivation of transfer functions that relate tree growth
                      to tree physiological quantities as well as climatic
                      parameters (Cook and Kairiukstis 1992; Fritts 1976).Up to
                      now hemispheric investigations using tree rings are mainly
                      based on data sets of mid and high latitude sites or Nordic
                      tree-line sites. Investigations based on trees of tropical
                      or subtropical regions are comparatively rare. This has
                      several causes. One reason is the difficulty to identify
                      tree-rings or growth increments of annual resolution.
                      Consequently, it is often demanding to construct reliable
                      data sets, i.e. chronologies of annual time resolution, for
                      extracting climatic signals and/or tree physiological
                      parameters. Therefore, tropical or subtropical trees have
                      only just recently come into focus of environmentalists and
                      climatologists. Subsequently tree-ring widths chronologies
                      of tropical tree ensembles are anything but numerous and
                      chronologies, e.g. regarding stable isotopes are almost
                      non-existent.},
      cin          = {IBG-3},
      ddc          = {910},
      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:000402315800001},
      doi          = {10.3112/erdkunde.2017.01.06},
      url          = {https://juser.fz-juelich.de/record/834459},
}