@phdthesis{Hartwich2012,
  author    = {Hartwich, Melanie},
  title     = {Short- and long-term changes of abiotic and biotic factors, and their impact on different primary consumers in Lake Constance},
  address   = {Potsdam},
  pages     = {125 S.},
  year      = {2012},
  language  = {en}
}