@article{BaumannJahnke1986,
  author    = {Baumann, Marcus and Jahnke, J.},
  title     = {Marine Planktonalgen der Arktis I. Die Haptophycee Phaeocystis pouchetii / Baumann, M. ; Jahnke, J.},
  series = {Mikrokosmos. 75 (1986), H. 9},
  journal   = {Mikrokosmos. 75 (1986), H. 9},
  isbn      = {0026-3680},
  pages     = {262 -- 265},
  year      = {1986},
  language  = {de}
}
@article{BaumannKraemer1986,
  author    = {Baumann, Marcus and Kr{\"a}mer, M.},
  title     = {Marine Planktonalgen der Arktis II. Diatomeen / Baumann, M. ; Kr{\"a}mer, M.},
  series = {Mikrokosmos. 75 (1986), H. 10},
  journal   = {Mikrokosmos. 75 (1986), H. 10},
  isbn      = {0026-3680},
  pages     = {306 -- 310},
  year      = {1986},
  language  = {de}
}
@article{BaumannJahnke1986,
  author    = {Baumann, Marcus and Jahnke, J.},
  title     = {Die marine Planktonalge Phaeocystis globosa / Jahnke, J. ; Baumann, M.},
  series = {Mikrokosmos. 75 (1986), H. 12},
  journal   = {Mikrokosmos. 75 (1986), H. 12},
  isbn      = {0026-3680},
  pages     = {357 -- 359},
  year      = {1986},
  language  = {de}
}
@article{SmithBaumannWilsonetal.1987,
  author    = {Smith, Walker O. and Baumann, Marcus and Wilson, David L. and Aletsee, Ludwig},
  title     = {Phytoplankton biomass and productivity in the marginal ice zone of the Fram Strait during summer 1984},
  series = {Journal of geophysical research},
  volume    = {Vol. 92},
  journal   = {Journal of geophysical research},
  number    = {Iss. C7},
  issn      = {2156-2202 (E-Journal); 2169-9291 (E-Journal); 0148-0227 (Print); 2169-9275 (Print)},
  pages     = {6777 -- 6786},
  year      = {1987},
  language  = {en}
}
@article{JahnkeBaumann1987,
  author    = {Jahnke, J. and Baumann, Marcus},
  title     = {Differentiation between Phaeocystis pouchetii (Har.) Lagerheim and Phaeocystis globosa Scherffel},
  series = {Hydrobiological bulletin},
  volume    = {Vol. 21},
  journal   = {Hydrobiological bulletin},
  number    = {Iss. 2},
  issn      = {0165-1404 (Print); 1573-5125 (E-Journal)},
  pages     = {141 -- 147},
  year      = {1987},
  language  = {en}
}
@inproceedings{Baumann1989,
  author    = {Baumann, Marcus},
  title     = {Primary production and phytoplankton growth in the marginal ice zone of the Fram Strait and the interpretation of the field data with autecological experiments (Abstract)},
  series = {Oceanography and biology of Arctic seas : selected papers from the ICES Symposium on Marine Sciences of the Arctic and Subarctic Regions, held in Santander, 28 - 30 September 1987. (Rapports et proc{\`e}s-verbaux des r{\´e}unions / Conseil International pour l'Exploration de la Mer ; 188)},
  booktitle = {Oceanography and biology of Arctic seas : selected papers from the ICES Symposium on Marine Sciences of the Arctic and Subarctic Regions, held in Santander, 28 - 30 September 1987. (Rapports et proc{\`e}s-verbaux des r{\´e}unions / Conseil International pour l'Exploration de la Mer ; 188)},
  editor    = {Hempel, G.},
  publisher = {International Council for the Exploration of the Sea},
  address   = {Copenhagen},
  organization    = {Symposium on Marine Sciences of the Arctic and Subarctic Regions <1987, Santander>},
  pages     = {128},
  year      = {1989},
  language  = {en}
}
@article{AletseeBaumann1991,
  author    = {Aletsee, Ludwig and Baumann, Marcus},
  title     = {A laboratory incubator equipped with facilities to automatically simulate natural irradiance},
  series = {Boletim do Instituto Oceanogr{\´a}fico / Universidade de S{\~a}o Paulo},
  volume    = {Vol. 39},
  journal   = {Boletim do Instituto Oceanogr{\´a}fico / Universidade de S{\~a}o Paulo},
  number    = {No. 2},
  issn      = {1982-436X; 0080-6331},
  pages     = {155 -- 159},
  year      = {1991},
  language  = {en}
}
@article{TuegBaumann1994,
  author    = {T{\"u}g, Helmut and Baumann, Marcus},
  title     = {Problems of UV-B radiation measurements in biological research : critical remarks on current techniques and suggestions for improvements},
  series = {Geophysical research letters},
  volume    = {Vol. 21},
  journal   = {Geophysical research letters},
  number    = {Iss. 8},
  issn      = {1944-8007 (E-Journal); 0094-8276 (Print)},
  pages     = {689 -- 692},
  year      = {1994},
  language  = {en}
}
@article{MedlinLangeBaumann1994,
  author    = {Medlin, L. K. and Lange, M. and Baumann, Marcus},
  title     = {Genetic differentiation among three colony-forming species of Phaeocystis : further evidence for the phylogeny of the Prymnesiophyta},
  series = {Phycologia},
  volume    = {Vol. 33},
  journal   = {Phycologia},
  number    = {Iss. 3},
  issn      = {0031-8884},
  pages     = {199 -- 212},
  year      = {1994},
  language  = {en}
}
@incollection{MedlinBarkerBaumannetal.1994,
  author    = {Medlin, L. K. and Barker, G. L. A. and Baumann, Marcus and Hayes, P. K.},
  title     = {Molecular biology and systematics},
  series = {The Haptophyte Algae (Special volume / Systematics Association : 51)},
  booktitle = {The Haptophyte Algae (Special volume / Systematics Association : 51)},
  publisher = {Clarendon Press},
  address   = {Oxford},
  isbn      = {0-19-857772-9},
  pages     = {393 -- 411},
  year      = {1994},
  language  = {en}
}
@article{TuegBaumann1995,
  author    = {T{\"u}g, Helmut and Baumann, Marcus},
  title     = {Reply to the comments by R.L. McKenzie and P.V. Johnston on our paper "Problems of UV-B radiation measurements in biological research: Critical Remarks on current techniques and suggestions for improvements"},
  series = {Geophysical research letters},
  volume    = {Vol. 22},
  journal   = {Geophysical research letters},
  number    = {Iss. 9},
  issn      = {1944-8007 (E-Journal); 0094-8276 (Print)},
  pages     = {1159 -- 1160},
  year      = {1995},
  language  = {en}
}
@inproceedings{BrandiniBaumann1997,
  author    = {Brandini, Frederico P. and Baumann, Marcus},
  title     = {The potential role of melted 'brown ice' as sources of chelators and ammonia to the surface waters of the Weddell Sea, Antarctica},
  series = {Proceedings of the NIPR Symposium on Polar Biology : 10},
  booktitle = {Proceedings of the NIPR Symposium on Polar Biology : 10},
  address   = {Tokyo},
  organization    = {National Institute of Polar Research},
  issn      = {0914-563X},
  pages     = {1 -- 13},
  year      = {1997},
  language  = {en}
}
@article{Baumann1996,
  author    = {Baumann, Marcus},
  title     = {Algenbl{\"u}ten \& Treibhauseffekt : Wechselwirkungen mit anthropogenen Aktivit{\"a}ten},
  series = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  volume    = {18},
  journal   = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  number    = {81},
  issn      = {0172-1623},
  pages     = {6 -- 11},
  year      = {1996},
  language  = {de}
}
@article{MeinersBaumann1997,
  author    = {Meiners, Klaus and Baumann, Marcus},
  title     = {Lokale Beitr{\"a}ge zum globalen Klimaschutz},
  series = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  volume    = {19},
  journal   = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  number    = {84},
  issn      = {0172-1623},
  pages     = {6 -- 12},
  year      = {1997},
  language  = {de}
}
@article{BaumannGronsfeldSchuetzLembach1997,
  author    = {Baumann, Marcus and Gronsfeld, A. and Sch{\"u}tz-Lembach, G.},
  title     = {Nachdenklichkeit {\"u}ber Nachhaltigkeit : wie uns ein neues Wort alte Probleme neu entdecken l{\"a}ßt},
  series = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  volume    = {19},
  journal   = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  number    = {87},
  issn      = {0172-1623},
  pages     = {6 -- 11},
  year      = {1997},
  language  = {de}
}
@article{BaumannPeschel1998,
  author    = {Baumann, Marcus and Peschel, G.},
  title     = {Aktuelle Entwicklungen zur Luftreinhaltung in der Stadt Aachen},
  series = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  volume    = {20},
  journal   = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  number    = {91},
  issn      = {0172-1623},
  pages     = {22 -- 29},
  year      = {1998},
  language  = {de}
}
@article{BaumannPeschel1998,
  author    = {Baumann, Marcus and Peschel, G.},
  title     = {Das Klima Aachens, lokale Anspr{\"u}che und globale Auswirkungen},
  series = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  volume    = {20},
  journal   = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  number    = {93},
  issn      = {0172-1623},
  pages     = {26 -- 33},
  year      = {1998},
  language  = {de}
}
@article{WiezorekBaumann1999,
  author    = {Wiezorek, E. and Baumann, Marcus},
  title     = {Stadt{\"o}kologie in der Stadtplanung: der "Stadt{\"o}kologische Beitrag" Aachen},
  series = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  volume    = {21},
  journal   = {Wechselwirkung : Wissenschaft \& vernetztes Denken},
  number    = {97},
  issn      = {0172-1623},
  pages     = {28 -- 37},
  year      = {1999},
  language  = {de}
}
@techreport{SchoeningSelmerBaumann2012,
  author    = {Sch{\"o}ning, Michael Josef and Selmer, Thorsten and Baumann, Marcus},
  title     = {Schlussbericht zum Projekt "Bio-LAPS" : Optimierung des Betriebs eines Biogasfermenters mit Hilfe eines Feldeffekt-Biosensors auf Basis eines lichtadressierbaren potentiometrischen Sensors (LAPS) : Laufzeit: 01.09.2008 bis 31.01.2012 : F{\"o}rderkennzeichen 07NR264 bzw.22026407},
  publisher = {BMELV},
  address   = {Berlin},
  pages     = {44 S.},
  year      = {2012},
  language  = {de}
}
@article{HuckSchiffelsHerreraetal.2013,
  author    = {Huck, Christina and Schiffels, Johannes and Herrera, Cony N. and Schelden, Maximilian and Selmer, Thorsten and Poghossian, Arshak and Baumann, Marcus and Wagner, Patrick and Sch{\"o}ning, Michael Josef},
  title     = {Metabolic responses of Escherichia coli upon glucose pulses captured by a capacitive field-effect sensor},
  series = {Physica Status Solidi (A)},
  volume    = {210},
  journal   = {Physica Status Solidi (A)},
  number    = {5},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {0031-8965},
  doi       = {10.1002/pssa.201200900},
  pages     = {926 -- 931},
  year      = {2013},
  abstract  = {Living cells are complex biological systems transforming metabolites taken up from the surrounding medium. Monitoring the responses of such cells to certain substrate concentrations is a challenging task and offers possibilities to gain insight into the vitality of a community influenced by the growth environment. Cell-based sensors represent a promising platform for monitoring the metabolic activity and thus, the "welfare" of relevant organisms. In the present study, metabolic responses of the model bacterium Escherichia coli in suspension, layered onto a capacitive field-effect structure, were examined to pulses of glucose in the concentration range between 0.05 and 2 mM. It was found that acidification of the surrounding medium takes place immediately after glucose addition and follows Michaelis-Menten kinetic behavior as a function of the glucose concentration. In future, the presented setup can, therefore, be used to study substrate specificities on the enzymatic level and may as well be used to perform investigations of more complex metabolic responses. Conclusions and perspectives highlighting this system are discussed.},
  language  = {en}
}