Institut für



Stellvertretende Institutsleitung


Katharina Wolf
Institut für Ostseefischerei

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

Juan Santos

 Juan  Santos
Alter Hafen Süd 2
18069 Rostock
+49 381 66099 122
+49 381 66099 199

Projekte und Aufgaben

  • Bycatch reduction in active and passive fisheries
  • Development and testing of fishing gear technologies to address species and size selectivity in mixed fisheries
  • Sampling scheme planning and cruise leadership in experimental sea trials
  • Quantitative and qualitative assessment of species/size selection and relative catchability of fishing gears


Fishing gears, trawl hydrodynamics and efficiency, trawl size selection, species selection in mixed fisheries, bycatch, fishing discards, fish behaviour, sampling design, programming, computer simulation, statistics (parametric and non-parametric regression tools, Mixed modelling, non-parametric inference tools [bootstrapping, jackknife, cross-validation and others], multivariate analysis)

Wissenschaftlicher Werdegang

Since Jan. 2013: Senior Researcher at the Thuenen Institute of Baltic Sea Fisheries, Rostock, Germany

2009 - 2012: Instituto Espanol de Oceanografıa, Vigo, Spain, Research technician (UE (DCR)-IEO)

  • Monitoring the behavior of Spanish fisheries operating in ICES areas in relation with future by-catch and discards EU policy
  • Selective gear design for by-catch reduction in ICES areas
  • Selectivity projects management and monitoring. Data analysis
  • Dissemination of effects of discard reduction technical measures tofishers
  • Keep track of the laws and rules applicable to Spanish fisheries in ICESareas, and coordination with European researchers in the task of applytechnical measures for by-catch reduction
  • Preparation and presentation of discards data from ICES fleets for demandinginstitutions
  • Participation in research surveys related with DCF

Sep. 2007: M.S.Marine Biology and Aquaculture, Universidade de Santiago de Compostela,Santiago de Compostela, Spain. Thesis Topic: A comparison of two methods for discards estimation incommercial fishing vessels. Adviser:Professor Manuel Aldegunde.

Oct. 2006 - Feb. 2007: Selectivity project RAI-AP-10/2006

Jul. 2006 - Oct. 2006: Spanish Discard Sampling Programme

Oct. 2005 - Mar. 2006: Selectivity project RAI-AP-21/2005

Nov. 2004 - Sep. 2005: Spanish Discard Sampling Programme

Jun. 2004 to Nov. 2005: Spanish Pelagic Longline Sampling Programme

Dec. 2002: Degree in Biology Science


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  1. Sistiaga M, Herrmann B, Brinkhof J, Larsen RB, Jacques N, Santos J, Gjøsund SH (2020) Quantification of gear inflicted damages on trawl-caught haddock in the Northeast Atlantic fishery. Mar Pollut Bull 157:111366, DOI:10.1016/j.marpolbul.2020.111366
    PDF Dokument (nicht barrierefrei) 1776 KB
  2. Eero M, Carlshamre S, Stepputtis D, Krumme U, Maioli F, Prista N, Schade FM, Santos J, Noack T, Valentinsson D, Nilsson H, Feekings JP, Storr-Paulsen M, Plikshs M, Bergström U, Hakansson KB, Radtke K (2019) Report on eastern baltic cod bycatch in non-targeted fisheries, mixing with western baltic cod in SD24, and stock situation in SDS 27-32. Copenhagen: ICES, 69 p, ICES Sci Rep 1(76), DOI:10.17895/
  3. Larsen RB, Sistiaga M, Herrmann B, Brinkhof J, Tatone I, Santos J (2019) The effect of Nordmøre grid length and angle on codend entry of bycatch fish species and shrimp catches. Can J Fish Aquat Sci 76(2):308-319, DOI:10.1139/cjfas-2018-0069
  4. Kraak SBM, Haase S, Minto C, Santos J (2019) The Rosa Lee phenomenon and its consequences for fisheries advice on changes in fishing mortality or gear selectivity. ICES J Mar Sci 76(7):2179-2192, DOI:10.1093/icesjms/fsz107
  5. Larsen RB, Herrmann B, Sistiaga M, Brinkhof J, Santos J (2018) Catch and release patterns for target and bycatch species in the Northeast Atlantic deep-water shrimp fishery: Effect of using a sieve panel and a Nordmøre grid. PLoS One 13(12):e0209621, DOI:10.1371/journal.pone.0209621
    PDF Dokument (nicht barrierefrei) 2851 KB
  6. Yulianto I, Booth H, Ningtias P, Kartaqijaya T, Santos J, Sarmintohadi, Kleinertz S, Campbell SJ, Palm HW, Hammer C (2018) Practical measures for sustainable shark fisheries: Lessons learned from an Indonesian targeted shark fishery. PLoS One 13(11):e0206437, DOI:10.1371/journal.pone.0206437
    PDF Dokument (nicht barrierefrei) 1790 KB
  7. Santos J, Herrmann B, Stepputtis D, Günther C, Limmer B, Mieske B, Schultz S, Neudecker T, Temming A, Hufnagl M, Bethke E, Kraus G (2018) Predictive framework for codend size selection of brown shrimp (Crangon crangon) in the North Sea beam-trawl fishery. PLoS One 13(7):e0200464, DOI:10.1371/journal.pone.0200464
    PDF Dokument (nicht barrierefrei) 9197 KB
  8. Santos J, Herrmann B, Mieske B, Krag LA, Haase S, Stepputtis D (2018) The efficiency of sieve-panels for bycatch separation in Nephrops trawls. Fish Manag Ecol 25(6):464-473, DOI:10.1111/fme.12323
  9. Santos J (2017) Bericht über die 725. Reise des FFS Solea vom 07.09 bis 23.09.2016 : Fahrtleitung: Juan Santos. Rostock: Thünen-Institut für Ostseefischerei, 44 p
    PDF Dokument (nicht barrierefrei) 11859 KB
  10. Santos J, Stepputtis D (2017) Report of the Cruise N 739, by the FRV Solea from 12:09 to 28:09:2017 Cruise leaders Juan Santos & Dr. Daniel Stepputtis. Rostock: Thünen-Institut für Ostseefischerei, 26 p
    PDF Dokument (nicht barrierefrei) 3106 KB

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