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Employee information:

Name: Lodewijk Walraven van
Department: Marine Ecology (MEE)
Email: Lodewijk.van.Walraven(at)nioz.nl
Telephone: +31 (0)222 369 534

About:

Lodewijk van Walraven

PhD student - Marine Ecology

 

 Research interests

Zooplankton ecology & taxonomy, with a focus on gelatinous plankton (jellyfish and comb jellies). My main interests are:

  • Trophic relationships and competition of gelatinous zooplankton with (larval) fish
  • Investigating species composition and seasonal patterns of gelatinous zooplankton in poorly-studied areas
  • Long term changes in phenology of zooplankton
  • Invasive species, especially the invasive ctenophore Mnemiopsis leidyi
  • Benthic - pelagic coupling (for example the role of jellyfish polyps in bloom formation or the impact of predation by gelatinous zooplanktivores on meroplanktonic larvae of benthic fish/shellfish).

Expertise

Gelatinous zooplankton ecology & taxonomy

Wadden Sea benthos identification

North Sea and Wadden Sea fish identification

 CV

2010 - 2014 PhD student Royal Netherlands Institute for Sea Research
2010 MSc degree in Marine Biology, University of Groningen
2009 - 2010 Research assistant at NIOZ, involved in monitoring of gelatinous zooplankton abundance as well as several other projects.
2009 Research internship for MSc. at NIOZ on gelatinous zooplankton predators in the Wadden Sea
2007 - 2008 Research internship for MSc. at Wageningen Institute for Marine Resources and Ecosystem Studies (IMARES),IJmuiden, Netherlands on fisheries induced evolution in plaice (Pleuronectes platessa).
2008 Bachelor in Biology with a specialization in Marine Biology, University of Groningen

 Project

  • Project title: 

    GELMESOZOOPLANKTON: Natural and anthropogenic impact on North Sea gelatinous zooplankton population dynamics: implications for ecosystem structure and functioning

     

  • Period: 01/09/2010 – 01/09-2014
  • Funded by:  
    • Stichting Deltares

       

    • Royal NIOZ
  • Co-promotores:             
    • Dr. ir. Henk W. van der Veer (NIOZ)
    • Dr. Victor Langenberg (Deltares)
  • Promotor: Prof. Dr. Theunis Piersma (RuG)

 

Publications

  • van Walraven L, Mollet FM, van Damme CJG and AD Rijnsdorp (2009) Fisheries-induced evolution in growth, maturation and reproductive investment of the sexually dimorphic North Sea plaice (Pleuronectes platessa L.). Journal of Sea Research. doi:10.1016/j.seares.2009.07.003
  • van Walraven L, Langenberg VT and HW van der Veer  (2013) Seasonal occurrence of the invasive ctenophore Mnemiopsis leidyi in the western Dutch Wadden Sea. Journal of Sea Research. doi:10.1016/j.seares.2013.02.003

If you need a copy, send me an email. 

Student projects

 

Current project(s):

Floor Driessen (Master student)

'Distribution and identification of scyphozoan polyps in Dutch coastal waters'; University of Groningen, The Netherlands

Helga van der Jagt (Master student)

Influence of temperature and salinity on Mnemiopsis leidyi, a DEB approach; University of Wageningen, The Netherlands

At the moment I am looking for students for the following project(s):
Quantifying predation by Mnemiopsis leidyi on bivalve veligers in Dutch coastal waters (6 months, click for description)

If you are interested, please contact me.

 Outreach