Are We Still Fishing Down the Food Web?

Thursday, August 21, 2014: 8:20 AM-5:20 PM
203 (Centre des congrès de Québec // Québec City Convention Centre)
Just over fifteen years ago in their seminal work, Dan Pauly and his colleagues coined the phrase “fishing down the food web”.  That phrase described how fisheries systematically target fish species lower and lower in the food web as they deplete higher trophic levels.  This can have dramatic impacts on an ecosystem.  However, this view is not shared by all fisheries biologists.  The American Institute of Research Fisheries Biologist would like to bring the debate to Quebec.  The objective of this symposium will be to hear both sides of the “fishing down the food web” argument.  We will bring together experts with various outlooks on the topic including one of the original authors of the idea, Villy Christensen.  The symposium will look at the impacts of mean trophic level of the catch and its utility as an ecosystem indicator.  While we may not be able to answer the question of whether or not we are still fishing down the food web, hopefully we can avoid eating jellyfish and plankton soup.
Sean M. Lucey and Steven X. Cadrin
Sean M. Lucey
Sean M. Lucey , Steven X. Cadrin and Richard Beamish
Sean M. Lucey

Steven X. Cadrin

Sean M. Lucey

Sean M. Lucey

Steven X. Cadrin

Richard Beamish, Ph.D

8:20 AM
Fishing Down through the Food Web
Villy Christensen, University of British Columbia

9:00 AM
How Do Fisheries Affect Marine Food Webs?
Trevor A. Branch, University of Washington

Trophic Levels in Fishbase and Sealifebase (Withdrawn)
10:00 AM
Thursday Morning Break

10:30 AM
Trade-Offs Between Supportive and Provisioning Ecosystem Services of Forage Species in Marine Food Webs
Timothy E. Essington, University of Washington; Steve Munch, SWFSC

11:10 AM
Bioeconomic Drivers of Exploitation Dynamics in Trophic Systems
James E. Wilen, University of California, Davis

11:50 AM
What's Trending in the Gulf of Mexico?
Kim de Mutsert, George Mason University

12:10 PM
Thursday Lunch

1:30 PM
Are We Catching What They Eat? - Assessing Mean Trophic Level of Fisheries Catch and Predator Consumption Globally
Konstantine J. Rountos, Stony Brook University; Michael Frisk, Stony Brook University; Ellen K. Pikitch, Stony Brook University

1:50 PM
Using Fish Diets As Ecosystem Indicators: Are Fish Feeding Down the Food Web on Georges Bank?
Brian E. Smith, National Marine Fisheries Service, Northeast Fisheries Science Center; Sean M. Lucey, National Marine Fisheries Service

2:10 PM
Using Trophic Interactions to Better Understand the Ecology of Latent Resources of the Northwest Atlantic Shelf Break Ecosystem
Michael Lowe, Woods Hole Oceanographic Institution; Gareth Lawson, Woods Hole Oceanographic Institution; Michael Fogarty, National Marine Fisheries Service; Jason Link, National Marine Fisheries Service; Brian Smith, National Marine Fisheries Service

2:30 PM
Is Fishing for Squid, Fishing Down the Food Web?
Michelle Staudinger, USGS, Northeast Climate Science Center

2:50 PM
Interactions Between Jellyfish and Marine Fish and Fisheries
Rick Brodeur, Northwest Fisheries Science Center

3:10 PM
Thursday Afternoon Break

3:40 PM
Summer Jellyfish Blooms in the Northern California Current: Modeling the Impacts upon Fish Production and Evaluating the Evidence
James Ruzicka, Oregon State University; Elizabeth Daly, Oregon State University; Rick Brodeur, Northwest Fisheries Science Center

4:00 PM
Trends in the Structure of Marine Ecosystems: An Analysis of Trawl Survey Data
Richard Bell, NRC/NEFSC/NMFS; Jeremy S. Collie, University of Rhode Island; Michael Fogarty, National Marine Fisheries Service; Trevor A. Branch, University of Washington; Coilin Minto, Galway-Mayo Institute of Technology; Daniel Ricard, Institute of Hydrobiology

4:20 PM
Is the Mean Trophic Level Useful for Fisheries Management in the Northeast US?
Gavin Fay, NOAA Fisheries; Scott Large, NOAA Fisheries

4:40 PM
A Tale of Two Systems: Testing the Robustness of Mean Trophic Level of the Catch As an Ecosystem Indicator
Sean M. Lucey, National Marine Fisheries Service; Sarah K. Gaichas, National Marine Fisheries Service; Kerim Y. Aydin, NOAA Alaska Fisheries Science Center

5:00 PM
Panel Discussion

See more of: Symposium Proposals