backResearcher Profile

Dr. Stephen John Walsh

Job Title: Research Scientist
Employer: Fisheries and Oceans Canada
Place of Birth: St. John's, Newfoundland, Canada
Public School attended: St. Teresa's Elementary
High School attended: Gonzaga
Further Education: Memorial University of Newfoundland (B.Sc., M.Sc.), University of Bergen, Norway (Ph.D.).
Geographic focus of research: Newfoundland, UK, Norway, USA

Brief synopsis of current research:
I am currently involved in research on the biology, ecology and stock assessment on Yellowtail flounder on the Grand Banks. I have two main areas of interest: the first deals with research on 1) oceanic nursery areas for flatfish and how they recruit to the adult population; 2) maturity and reproduction in commercial groundfish species and 3) and movements and migrations. The second deals with research into natural fish behaviour and fish behaviour reactions to fishing gears through use of laboartory experiments and field studies using acoustic tags and underwater cameras.

Mailing address:
Northwest Atlantic Fisheries Centre, P.O. Box 5667, St. John's, NF, A1C 5X1
Phone: (709)772-5478; Fax: (709)772-4188

E-mail:
walsh@athena.nwafc.nf.ca

Recent Publications:

Walsh S. J 1992 Factors influencing distribution of juvenile yellowtail flounder on the Grand Bank of Newfoundland. Neth. J. Sea Res. 29: 193-203.

Walsh S. J and W.M. Hickey 1993. Behavioural reactions of demersal fish to bottom trawls at various light conditions. ICES Mar. Sci. Symp. 196:68-76.

Walsh S.J. 1994 Recruitment variability in populations of long rough dab (American plaice) Hippoglossoides platessoides (Fabricius) in the North Atlantic. Neth. J. Sea. Res. 32: 421-431.

Walsh S.J. 1996 Life history and ecology of long rough dab, Hippoglossoides platessoides (F) in the Barents Sea. J. Sea Res.36: 285-310.

O.R. Godø, S.J. Walsh and A. Engås 1999. Investigating density dependent catchability in bottom trawl surveys. ICES J. mar. Sci. .56:292-298

Comments:
After the first day I walked into a biology class in Grade 10 (I was suppose to be taking 2nd year physics), I knew what I wanted to be: a biologist. Naturally being surrounded by an ocean, the focus narrowed down to marine biology by the time I finished my undergraduate studies. From a marine perspective, the development in acoustic, electronic and underwater camera technologies have acclerated our understanding of fish populations movements and fish behaviour. More and more aquatic science graduates should have a firm mathematical, statistical and computer background to supplement their biology background and also a background in animal behaviour if they are interested in studying large mobile aquatic organisms. This is especially true if you are interested in graduate level research. One promising area of research that is slowly making inroads into some Canadian universities with large programs in aquatic science is hydroacoustics which will permit better understanding of fish behaviour. Canada has several excellent universities with aquatic programs.