Find out more about the people behind Cawthron Institute.

Rasmus Gabrielsson

Freshwater Ecologist – Recreational Fisheries Management


  • PhD Candidate (part time). Otago University, 2010 – present
  • PGDip (Wildlife Management). Otago University, 2006
  • BSc (Ecology). Otago University, 2005

Role at Cawthron 

Rasmus is a freshwater ecologist with the Coastal and Freshwater Group. He is involved in both research and commercial projects in the freshwater area. Rasmus' main area of expertise is recreational fisheries management and fish ecology and behaviour. He is also completing his PhD in ecology as a part-time student while working for Cawthron.

Technical skills, experience and interests

  • Fish behaviour and ecology, with a focus on migration and recruitment patterns
  • Application of traditional fishery monitoring techniques with more recently developed tools, such as fish ear bone (otolith) microchemical analysis of hard and soft body parts and bioenergetics growth modelling, to make inferences about life history strategies in different habitats
  • Validation and development of the use of geochemical markers in otolith to identify migratory movements and natal areas of high importance to freshwater sports fish populations
  • Fish life-history strategy, migration and evolutionary adaptations
  • Fish passage investigation, monitoring and solutions
  • Recreational fisheries management and survey techniques
  • Natural resource management

Professional affiliations

  • New Zealand Freshwater Sciences Society
  • American Fisheries Society


Gabrielsson RM 2009. Evidence presented to the special tribunal hearing on behalf of Fish & Game New Zealand in respect of an application to amend the 1997 (Kawarau) Water Conservation Order with regards to the Nevis River.

View Rasmus' ResearchGate profile

Publication links

+64 3 548 2319 ext 277