Education

Ph.D. in Zoology and Statistics, 1995, University of Toronto

Description

I am a fisheries scientist who is interested in fisheries ecology and assessment and management of fisheries resources of commercial and recreational importance.  

 

Education:

Ph.D. in Zoology and Statistics, 1995, University of Toronto, Canada.

M.S. in Fish Ecology, 1991, University of Toronto, Canada.

B. Agric. in Fisheries Science, 1983, Qingdao Ocean University, China   

Employment:

School of Marine Sciences, University of Maine, Orono

Professor (9/1/2007 - present)

Associate Professor (9/1/2003 –8/31/2007)

Assistant Professor (7/1/2000 – 8/31/2003)           

Memorial University of Newfoundland, Canada

Adjunct Professor of Biology Department (May 2001 – present)

Assistant Professor (July 1997 – August 2000)

NSERC Associate Chair in Fisheries Conservation (July 1997 – August 2000)           

New South Wales (NSW) Fisheries Department, Cronulla, NSW, Australia

Fisheries Population Dynamicist (January 1995 – July 1997)

Research interests

My study is focused on quantitative fisheries ecology, stock assessment and management. I study how fishing and environmental factors may affect the dynamics of fish populations and fish communities and develop new approaches to modeling the dynamics of fish populations and conducting stock assessment. My current research interests include: evaluating fish life history and environmental impcats;  developing stock assessment framework for invertebrate (e.g., American lobster, sea urhcin, sea cucumber, crabs, etc.) and finfish (groundfish and pelagic fish) species of commercial importance in Maine and otehr parts of the world; fisheries ecosystem modeling;  designing fisheries-dependent and fisheries-independent survey programs; conducting risk analysis of alternative management strategies; studying quality and quantity of fisheries data and their impacts on stock assessment; developing Bayesian stock assessment approach robust to outliers and erroneous priors; and assimilating fisheries data of different sources in stock assessment. Much of my work has been interdisciplinary, involving fisheries biology, ecology, mathematical and statistical modeling, management policy and computer simulations.

Publications

• Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y., P. Breen, and N. Andrew. 2000. Impacts of outliers and mis-specification of priors on Bayesian fisheries stock assessment. Canadian Journal of Fisheries and Aquatic Sciences (in press)
• Fisheries Research
  Chen, Y. and D. A. Jackson. 2000. An empirical study on estimators for linear regression analyses in fisheries. Fisheries Research (in press)
• Aquatic Living Resources
  Chen, Y. and H. H. Harvey. 1999. Spatial structuring of length-at-age of the benthivorous white sucker (Catostomus commersoni) in relation to environmental variables. Aquatic Living Resources 12:351-362.
• Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y. and D. Fournier. 1999. Impacts of atypical data on Bayesian inference and robust Bayesian approach in fisheries. Canadian Journal of Fisheries and Aquatic Sciences 56:1525-1533
• Freshwater and Marine Research
  Chen, Y. and S. Kennelly. 1999. Growth of spanner crab, Ranina ranina, off the east coast of Australia. Freshwater and Marine Research 50:319-325
• Fishery Bulletin
  Chen, Y. and S. Montgomery. 1999. Modelling the dynamics of rock lobster, Jasus verreauxi, stock in New South Wales, Australia. Fishery Bulletin 97:25-38.
• Aquatic Sciences
  Chen, Y., G. Liggins, and R. West. 1998. A yield-per-recruit model for sequential fisheries and its application in evaluating the management strategy of changing incidental inshore fishing mortality. Aquatic Sciences 60:130-144.
• Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y. and N. Andrew. 1998. Parameter estimation in modelling the dynamics of fish stock biomass: are currently used observation-error estimators reliable? Canadian Journal of Fisheries and Aquatic Sciences 55:749-760.
• Aquatic Living Resources
  Chen, Y. 1997. A comparison study of age- and length-structured yield-per-recruit models. Aquatic Living Resources 10:271-280.
• Canadian Journal of Fisheries and Aquatic Sciences
  Paloheimo, J. E. and Y. Chen. 1996. Estimating fishing mortality and cohort sizes. Canadian Journal of Fisheries and Aquatic Sciences 53:1572-1579.
• fish mortality rates with a cohort-based model. Transactions of the American Fisheries Society
  Chen, Y. and J. E. Paloheimo. 1994. Robust regression approach to estimating fish mortality rates with a cohort-based model. Transactions of the American Fisheries Society 50:2421-2428.
• NSW Fisheries Research Institute
  Chen, Y. and S. Montgomery. 1996. Stock assessment of rock lobster, Jasus verreauxi, in New South Wales using a biomass dynamic model. In: An Assessment of the NSW Eastern Rock Lobster Fishery for 1995/96 (by S. Montgomery and Y. Chen). NSW Fisheries Research Institute.
• NSW abalone fishery. In N.L.
  Chen, Y. and N. L. Andrew. 1997. A biomass-dynamic model for NSW abalone fishery. In N.L.
• NSW Fisheries Research Institute
  Andrew, D.G. Worthington, R.C. Chick, P.A. Brett, and Y. Chen: An assessment of the NSW abalone fishery in 1996. NSW Fisheries Research Institute.
• NSW rock lobster fishery
  Chen, Y. and S. Montgomery. 1997. A biomass dynamic model for NSW rock lobster fishery.
• NSW Fisheries Research Institute.
  S. Montgomery, J. Craig, M. Tanner, and Y. Chen: An Assessment of the NSW Eastern Rock Lobster Fishery for 1996/97. NSW Fisheries Research Institute.
• Canadian Stock Assessment Secretariat Research Document 99/115.
  Chen, Y. and L. G. S. Mello. 1999. Developing an overall indicator for monitoring temporal variation in fish size at age and its application to cod in the Northwest Atlantic, NAFO subdivision 3Ps. Canadian Stock Assessment Secretariat Research Document 99/115.
• 1999 Fisheries Research
  Chen, Y. and G. S. Mello. 1999. Growth and maturation of cod (Gadus morhua) of different year classes in NAFO Subdivision 3Ps in Northwest Atlantic. Fisheries Research 42:87-101
• 1998 Fisheries Research
  Chen, Y. and J. E. Paloheimo. 1998. Can a more realistic model error structure improve parameter estimation in modelling the dynamics of fish populations? Fisheries Research 38:9-17.
• 1997 Fishery Bulletin
  Andrew, N. and Y. Chen. 1997. Optimal sampling for estimating the size structure and mean size of individuals caught in an abalone fishery. Fishery Bulletin 95:403-413.
• 1997 Fisheries Research
  Chen, Y. and G. Gordon. 1997. Assessing at-sea discarding using a length-structured yield-per-recruit model. Fisheries Research 30:43-55.
• 1997ta Fisheries Research
  Chen, Y., G. Liggins, K. Graham, and S. Kenelley. 1997. Modelling length-dependent offshore distribution of redfish, Centroberyx affinis. Fisheries Research 29:39-54.
• 1996 Fisheries Research
  Chen, Y. 1996. A Monte Carlo study on impacts of the size of subsample catch on estimation of fish stock parameters. Fisheries Research 26:207-223.
• Transactions of the American Fisheries Society
  Chen, Y. and D. A. Jackson. 1995. Robust estimation of mean and variance in fisheries. Transactions of the American Fisheries Society 124:401-412. Chen, Y. and H. H. Harvey. 1995. Growth, abundance, and food supply of white sucker, Catostomus commersoni. Transactions of the American Fisheries Society 124:262-271.
• 1995 Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y. and J. E. Paloheimo. 1995. A robust regression analysis of recruitment in fisheries. Canadian Journal of Fisheries and Aquatic Sciences 52: 993-1006.
• 1994 Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y. and H. H. Harvey. 1994. Maturation of white sucker, Catostomus commersoni, populations in Ontario. Canadian Journal of Fisheries and Aquatic Sciences 51:2066-2076.
• Aquatic Sciences
  Chen, Y. and J. E. Paloheimo. 1994. Estimation of fish length and age at 50% maturity using a logistic type model. Aquatic Sciences 56:206-219.
• 1994 Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y., D. A. Jackson, and J. E. Paloheimo. 1994. Robust regression approach to analyzing fisheries data. Canadian Journal of Fisheries and Aquatic Sciences 51:1420-1429.
• 1993 Canadian Journal of Fisheries and Aquatic Sciences
  Paloheimo, J. E. and Y. Chen. 1993. Estimation of effective effort from catch-at-age data. Canadian Journal of Fisheries and Aquatic Sciences 50:2421-2428.
• 1992 Canadian Journal of Fisheries and Aquatic Sciences
  Chen, Y., D. A. Jackson, H. H. Harvey. 1992. A comparison of von Bertalanffy and polynomial functions in modelling fish growth data. Canadian Journal of Fisheries and Aquatic Sciences 49:1228-1235.

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