Directors and Scientists

Thomas Brown

Thomas Brown Administrative Director

Thomas Brown hails from St. Anthony and holds a bachelor of science (Honours) in biology and a master's degree in fisheries resource management from Memorial University. After graduation, Tom obtained contractual employment as an aquaculture project officer with Fisheries and Oceans Canada, and went on to become Newfoundland operations manager for Tavel Limited, a dockside grading company.

In October 2003, Tom accepted a position as assistant director of the Centre for Aquaculture and Seafood Development. In 2010 Tom played an integral role in the development and creation of CFER and has since become administrative director of the Centre.

Noel Cadigan

Noel Cadigan Quantitative Fisheries Scientist

Dr. Noel Cadigan is a quantitative fisheries scientist specializing in statistical methods for fish stock assessment and sustainable fisheries. He has extensive experience in the assessment of Newfoundland fish stocks, and experience with other Canadian, American and European stocks.

He received a doctor of philosophy in statistics in 1999 at the University of Waterloo, a master of applied statistics in 1993 and a bachelor of science (Honours) in 1990 from Memorial University.

He worked with Fisheries and Oceans Canada at the Northwest Atlantic Fisheries Center in Newfoundland from 1990-2011 (with a 2-year break to pursue his studies) and focused on the assessment of Atlantic cod and other groundfish stocks.

Dr. Cadigan is a cross-appointed member in the Department of Mathematics and Statistics at Memorial University and has supervised graduate students in statistics whose research involved applications to stock assessment problems.

Marie Clément

Marie Clément Aquatic Research Scientist

Dr. Marie Clément holds a master of science in biology from the University of New Brunswick and a doctor of philosophy in zoology from the University of Guelph. Prior to joining CFER, Marie worked for the Department of Fisheries and Oceans for 11 years (2001 – 2012).

She began her career as an Atlantic salmon stock assessment biologist.

Since 2004, she has studied the effects of anthropogenic activities on riverine habitat and fish populations and the efficiency of mitigation measures (e.g., peatland exploitation, timber harvesting, dam removal and fishways passage efficiency). Using fin tissue stable isotope and otolith microchemistry analyses, she also investigated migration patterns of American eel between saline summer feeding grounds to freshwater overwintering.

Her current research interests focus on quantifying the effects of anthropogenic activities on freshwater and estuarine ecosystems, including the effects of hydro-electric dams, mining and climate change. More specifically, she is interested in bioaccumulation of mercury in food webs, instream flow requirements, sediment transport and alteration of life-history traits in fishes.

Jonathan Fisher

Jonathan Fisher Research Scientist

Dr. Jonathan Fisher is a research scientist with interests in the structure, functioning and dynamics of marine ecosystems. He has research experience in population, community and ecosystem ecology of exploited and unexploited systems in the Northwest Atlantic.

Most recently, Jonathan was a postdoctoral fellow in the Department of Biology at Queen's University and the Bedford Institute of Oceanography. He received his doctor of philosophy from the University of Pennsylvania, a master of science from Dalhousie University and a bachelor of science (Honours) from Queen's University.

Jonathan's personal webpage.

Maxime Geoffroy Research Scientist

Dr. Maxime Geoffroy is a research scientist with expertise in bioacoustics, marine ecology and biological oceanography. His research aims at better understanding the ecology of North Atlantic and Arctic pelagic fish in relation to hydrography and climate change. In addition to ship-based surveys, he uses new technology, as unmanned vehicles and active acoustic moorings, to study marine ecosystems.

Prior to working at CFER, Maxime was a postdoctoral researcher at the Department of Arctic and Marine Biology of UiT the Arctic University of Norway. He holds a PhD in oceanography and an MSc in biology from Laval University, and a degree in mechanical engineering from the University of Ottawa.

Rajeev Kumar Post-Doctoral Fellow

Dr. Rajeev Kumar joined CFER as a Post-Doctoral Fellow (PDF) in April 2017. His work is primarily focusing on state-space stock assessment models for Grand Banks American Plaice and Yellowtail Flounder. Before joining MI, Rajeev worked as a PDF at the Institute for the Oceans and Fisheries (formerly, Fisheries Center), the University of British Columbia where he developed a spatial ecosystem model for the east Pacific Ocean off northern British Columbia using Ecopath, Ecosim and Ecospace modelling suite to understand the essential role of forage fish – especially Pacific herring – in social-ecological systems. Rajeev earned his PhD in 2015 in Resource Management and Environmental Studies from UBC, developing an ecosystem model for Mille Lacs Lake, Minnesota, with an aim to provide various options for the managers in planning and sustainably managing the recreational fisheries of the lake in active collaboration with Minnesota Department of Natural Resources. Before moving to UBC, he completed his masters on Protonibea diacanthus, a large sciaenid from Mumbai waters (India), focusing on the biology and stock-assessment of the species.

Arnault Le Bris

Arnault Le Bris Research Scientist

Dr. Arnault Le Bris is a research scientist with interests in understanding and quantifying processes that drive the dynamics of marine fish and shellfish populations. His past and present work has focused on evaluating how climate variability and change affects the productivity of living marine resources, and how fish migration affects the sustainable management of fisheries resources.

Originally from the Brittany region in France, Arnault first came to Newfoundland in 2009 to pursue his doctoral studies in fisheries ecology at Memorial University of Newfoundland. Before joining CFER, he was a postdoctoral fellow at the Gulf of Maine Research Institute in Portland Maine, USA.

Arnault’s personal webpage

Sherrylynn Rowe

Sherrylynn Rowe Research Scientist

Dr. Sherrylynn Rowe is a research scientist with CFER. Prior to joining the Centre, Sherrylynn was a research scientist with Fisheries and Oceans Canada at the Bedford Institute of Oceanography.

She received a doctor of philosophy from Dalhousie University as well as a master of science and a bachelor of science (Honours) from Memorial University. Sherrylynn's recent scientific efforts have focused on stock assessment and related research involving ecology and life history of groundfish and marine invertebrates.

Her earlier studies examined linkages between spawning behaviour and population dynamics of Atlantic cod and the role of marine protected areas in enhancing lobster populations and fisheries.

Dr. Fan Zhang Research Scientist

Dr. Fan Zhang Research Scientist

Dr. Fan Zhang is a research scientist at CFER, and a junior Ocean Choice International (OCI) Industrial Research Chair in Fish Stock Assessment and Sustainable Harvest Advice for Northwest Atlantic Fisheries. His research mainly focuses on the spatio-temporal recruitment dynamics of important fish species on the Grand Banks, which will contribute to improve stock assessment models for important Northwest Atlantic Fisheries. He is interested in a holistic approach to fisheries problems by combining ecological and social aspects of fisheries systems. He aims to study fish recruitment dynamics in the context of complex adaptive social-ecological system, and most of his research involves developing and/or improving statistical and mathematical models as well as computer simulations.

Fan did his postdoctoral research with the Department of Integrative Biology, University of Guelph. He obtained a PhD degree in integrative biology from University of Guelph, a Master’s degree in fisheries resources and a Bachelor’s degree in marine biological resources and the environment from the Ocean University of China.

Dr. Nan Zheng OFI Post-Doctoral Fellow

Dr. Nan Zheng joined CFER as an OFI Post-Doctoral Fellow in September 2017. His work is primarily focusing on developing spatial stock assessment models for Grand Banks flatfish.

Nan Zheng earned his MSc. in 2013 and PhD in 2017 from the Department of Mathematics and Statistics at MUN. His MSc. work was in financial time series, and his PhD work was in semi-parametric fixed and mixed models for longitudinal discrete data. He was awarded the Dean's Award for 2013-17 as well as the titles of Fellow of the School of Graduate Studies 2013-14 and 2017-18 for his MSc. and PhD studies respectively.

Nan Zheng received his BSc. degree from Zhejiang University in China. His previous work was in general relativity, solid state physics, and optics.