@article{HiltWankeScharnweberetal.2015,
  author    = {Hilt, Sabine and Wanke, Thomas and Scharnweber, Inga Kristin and Brauns, Mario and Syvaranta, Jari and Brothers, Soren M. and Gaedke, Ursula and K{\"o}hler, Jan and Lischke, Betty and Mehner, Thomas},
  title     = {Contrasting response of two shallow eutrophic cold temperate lakes to a partial winterkill of fish},
  series = {Hydrobiologia : acta hydrobiologica, hydrographica, limnologica et protistologica},
  volume    = {749},
  journal   = {Hydrobiologia : acta hydrobiologica, hydrographica, limnologica et protistologica},
  number    = {1},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {0018-8158},
  doi       = {10.1007/s10750-014-2143-7},
  pages     = {31 -- 42},
  year      = {2015},
  abstract  = {Food-web effects of winterkill are difficult to predict as the enhanced mortality of planktivorous fish may be counterbalanced by an even higher mortality of piscivores. We hypothesised that a winterkill in a clear and a turbid shallow lake would equalise their fish community composition, but seasonal plankton successions would differ between lakes. After a partial winterkill, we observed a reduction of fish biomass by 16 and 43\% in a clear-water and a turbid small temperate lake, respectively. Fish biomass and piscivore shares (5\% of fish biomass) were similar in both lakes after this winterkill, but young-of-the-year (YOY) abundances were higher in the turbid lake. Top-down control by crustaceans was only partly responsible for low phytoplankton biomass at the end of May following the winterkill in both lakes. Summer phytoplankton biomass remained low in the clear-water lake despite high abundances of YOY fish (mainly roach). In contrast, the crustacean biomass of the turbid lake was reduced in summer by a high YOY abundance (sunbleak and roach), leading to a strong increase in phytoplankton biomass. The YOY abundance of fish in shallow eutrophic lakes may thus be more important for their summer phytoplankton development after winterkill than the relative abundance of piscivores.},
  language  = {en}
}
@article{LattemannKoehler2008,
  author    = {Lattemann, Christoph and K{\"o}hler, Thomas},
  title     = {Trust or control : governance concepts for virtual organizations},
  year      = {2008},
  language  = {en}
}
@book{PetscheZapfKoehler2007,
  author    = {Petsche, Hans-Joachim and Zapf, Antje and K{\"o}hler, Thomas},
  title     = {Die neuen Medien und die kulturelle Vielfalt Europa : empirische-vergleichende Erhebung unter Studierenden Deutschlands, Polens, Spaniens, Tschechiens und Ungarns ; Zweiter Halbband: Vergleichende Darstellung der Erhebungsdaten},
  series = {Network Cultural Diversity and New Media},
  volume    = {11,2},
  journal   = {Network Cultural Diversity and New Media},
  publisher = {trafo},
  address   = {Berlin},
  isbn      = {978-3-89626-735-1},
  pages     = {281 S.},
  year      = {2007},
  language  = {de}
}
@book{PetscheZapfKoehler2007,
  author    = {Petsche, Hans-Joachim and Zapf, Antje and K{\"o}hler, Thomas},
  title     = {Die neuen Medien und die kulturelle Vielfalt Europa : empirische-vergleichende Erhebung unter Studierenden Deutschlands, Polens, Spaniens, Tschechiens und Ungarns ; erster Halbband: Konzeptionelle Ansatz und ausgew{\"a}hlte Ergebnisse},
  series = {Network Cultural Diversity and New Media},
  volume    = {11,1},
  journal   = {Network Cultural Diversity and New Media},
  publisher = {trafo},
  address   = {Berlin},
  isbn      = {978-3-89626-731-3},
  pages     = {148 S.},
  year      = {2007},
  language  = {de}
}
@book{MisochKoehler2006,
  author    = {Misoch, Sabina and K{\"o}hler, Thomas},
  title     = {Neue Medien in der Lehrerbildung : Beobachtungen zur aktuellen Nutzung an der Universit{\"a}t Potsdam},
  isbn      = {3-939469- 11-4},
  year      = {2006},
  language  = {de}
}
@book{ErberKoehlerLattemannetal.2005,
  author    = {Erber, Georg and K{\"o}hler, Thomas and Lattemann, Christoph and Preissl, Brigitte and Rentmeister, Jahn},
  title     = {Rahmenbedingungen f{\"u}r eine Breitbandoffensive in Deutschland : Studie f{\"u}r die Deutsche Telekom AG},
  publisher = {DIW},
  address   = {Berlin},
  pages     = {83 S.},
  year      = {2005},
  language  = {de}
}
@article{Koehler2005,
  author    = {K{\"o}hler, Thomas},
  title     = {Virtuelle Identit{\"a}t},
  isbn      = {3-89626-523-7},
  year      = {2005},
  language  = {de}
}
@article{Koehler2004,
  author    = {K{\"o}hler, Thomas},
  title     = {Elektronische Produkte},
  year      = {2004},
  language  = {de}
}
@misc{KoehlerBoerner2004,
  author    = {K{\"o}hler, Thomas and B{\"o}rner, Claudia},
  title     = {Medienkompetenz am Gymnasium entwickeln},
  year      = {2004},
  language  = {de}
}
@misc{Koehler2004,
  author    = {K{\"o}hler, Thomas},
  title     = {Mangold, R., Lehrbuch Medienpsychologie ; G{\"o}ttingen, Hofgrefe, 2004},
  year      = {2004},
  language  = {de}
}