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@ARTICLE{Celen:186612,
      author       = {Celen, M. and Karpuzcu, M. and Onkal Engin, G. and
                      Tetzlaff, B. and Wendland, F.},
      title        = {{M}odelling total phosphorus input pathways in the {P}orsuk
                      reservoir catchment in {T}urkey},
      journal      = {Environmental earth sciences},
      volume       = {72},
      number       = {12},
      issn         = {1866-6299},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {FZJ-2015-00685},
      pages        = {5019 - 5034},
      year         = {2014},
      abstract     = {As a country in the Mediterranean region, Turkey must face
                      the effects of climate change on water quality and quantity.
                      Decision support systems are accepted as useful and
                      practical tools for the protection and management of water
                      resources. The need for such tools is rapidly emerging in
                      conjunction with industrial developments in Turkey. Against
                      this background, the empirical area-differentiated
                      phosphorus model MEPhos developed for the mid-European site
                      conditions was transferred and adapted for a representative
                      study area in Turkey, the Porsuk reservoir catchment.
                      Adaption included the development of a model approach to
                      consider the P input into surface waters from septic tanks.
                      For this purpose, several field campaigns were carried out
                      to define characteristic P emission coefficients for septic
                      tanks. In addition, the soil phosphorus content of the top
                      soil was defined to generate reliable input data for the
                      modelling of the P input into surface water via soil erosion
                      in agricultural areas. According to the MEPhos model
                      results, mean annual phosphorous loads of all types of point
                      sources dominate with a percentage of around 57 $\%.$
                      Erosion contributes to 40 $\%$ of the total P load and
                      displays the most significant diffuse input pathway. The
                      validation studies conducted between 2007 and 2011 showed a
                      satisfying agreement with the observed values. After
                      validation, the efficiency of measures to reduce P inputs
                      into the Porsuk reservoir was analysed. It was found that
                      most measures to prevent soil erosion seem to be
                      appropriate, whereas measures to reduce P input from point
                      sources seem to be less efficient},
      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:000345407000025},
      doi          = {10.1007/s12665-014-3371-x},
      url          = {https://juser.fz-juelich.de/record/186612},
}