Institute of

Baltic Sea Fisheries


Katharina Wolf
Institute of Baltic Sea Fisheries

Alter Hafen Süd 2
18069 Rostock
Phone: +49 381 8116 102
Fax: +49 381 8116 199

Juan Santos

Alter Hafen Süd 2
18069 Rostock
+49 381 8116 122
+49 381 8116 199

Fields of activity

  • 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

Research interests

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)

Scientific background

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


Results 1 - 10 of 20

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  1. 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
  2. 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 fsz107:in Press, DOI:10.1093/icesjms/fsz107
  3. 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 document (limited accessibility) 2851 kb
  4. 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 document (limited accessibility) 1790 kb
  5. 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 document (limited accessibility) 9197 kb
  6. 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
  7. 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 document (limited accessibility) 11859 kb
  8. 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 document (limited accessibility) 3106 kb
  9. Alonso-Fernandez A, Otero J,, Banon R, Compelos JM, Santos J, Mucientes G (2017) Sex ratio variation in an exploited population of common octopus: ontogenic shifts and spatio-temporal dynamics. Hydrobiologia 794(1):1-16, DOI:10.1007/s10750-016-3065-3
  10. Santos J (2016) Bericht über die 709. Reise des FFS Solea vom 09.09 bis 26.09.2015 : Fahrtleitung: Juan Santos. Rostock: Thünen-Institut für Ostseefischerei, 16 p

Results 1 - 10 of 20

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