Institute of

Baltic Sea Fisheries


Marie Austerhoff
Institut für Ostseefischerei

Alter Hafen Süd 2
18069 Rostock
Phone: +49 381 66099 102
Fax: +49 381 66099 199

Isabella Kratzer

 Isabella  Kratzer

until June 30th, 2021

Research Interests

  • Modification of fishing gear to reduce unwanted by-catch
  • Behavior of fish, seabirds and marine mammals
  • Ecosystem service interaction (fisheries vs. biodiversity)
  • Science communication

Scientific background

11/2020 - 06/2021: Project Gillnet modifications to reduce bycatch (PEARLNET_OP)

2017-07/2020: Project "Gill net fisheries: Development of alternative management approaches (STELLA)"

2015 - 2016: secondary education studies for Biology/Physics, University of Rostock and employment as student assistant in the working group Didactics of Physics

2014 - 2015: research assistant at the Royal Netherlands Institute for Sea Research, Yerseke

2012 - 2013: student assistant at TI-OF in the project “Pulse beam trawl” and participation in various cruises

2010 - 2012: Master in “Aquaculture”, University of Rostock. Master thesis: “Pulse beam trawling vs. traditional beam trawling in German shrimp fishery: a comparative study“

2007 - 2012: Bachelor in “Mechanical Engineering”, University of Rostock. Bachelor thesis at the Politecnico di Milano: „High-temperature fracture properties of a structural steel“


hits: 5

  1. Kratzer I (2021) Gillnet modifications to reduce bycatch of harbor porpoises. DTU Aqua National Institute of Aquatic Resources, 172 p, Lyngby, Techn Univ of Denmark, Section for Ecosystem Based Marine Management, PhD Thesis
  2. Kratzer I, Brooks ME, Bilgin S, Ozdemir S, Kindt-Larsen L, Larsen F, Stepputtis D (2021) Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery. Fish Res 243:106088, DOI:10.1016/j.fishres.2021.106088
  3. Chladek J-C, Stepputtis D, Hermann A, Kratzer I, Ljungberg P, Rodriguez-Tress P, Santos J, Svendsen JC (2021) Using an innovative net-pen-based observation method to assess and compare fish pot-entrance catch efficiency for Atlantic cod (Gadus morhua). Fish Res 236:105851, DOI:10.1016/j.fishres.2020.105851
  4. Kratzer I, Schäfer I, Stoltenberg A, Chladek J-C, Kindt-Larsen L, Larsen F, Stepputtis D (2020) Determination of optimal acoustic passive reflectors to reduce bycatch of odontocetes in gillnets. Front Mar Sci 7:539, DOI:10.3389/fmars.2020.00539
    pdf document (limited accessibility) 1067 kb
  5. Kratzer I (2012) Pulse beam trawling vs. traditional beam trawling in German shrimp fishery: a comparative study. Rostock: Univ Rostock, 114 p, Rostock, Univ, Masterarbeit, 2012