Tuesday, January 14th
9am–5pm Contributed talks -- European and American surveys.
9am–9:15 Sven Kupschus, CEFAS An overview of European surveys.
9:15–9:30 Rick Rideout, DFO An Overview of Fisheries and Oceans Canada’s Multispecies Bottom Trawl Surveys in the Newfoundland and Labrador Region: Survey Coverage Issues and Implications for the Provision of Science Advice.
9:30–9:45 Michael Martin, AFSC An overview of NOAA Fisheries Surveys.
9:45–10:00 Anne Hollowed, AFSC SSC perspective on trade-offs among trawl survey schemes in federal waters off Alaska under varying funding scenarios.
10:00–10:15 Kotaro Ono, IMR A spatiotemporal operating model for simulation testing Alaskan bottom trawl survey effort and design.
TOR I. The current processes used in dealing with unavoidable reductions in survey effort and examine the existing coping strategies (e.g. spatial coverage, survey frequency, or sampling density) and their qualitative consequences.
10:30–10:45 Kristin Marshall, NWFSC Understanding trade-offs with survey frequency using Management Strategy Evaluation (MSE): a Pacific Hake case study.
10:45–11:00 Owen Hamel NWFSC The effect of survey frequency and intensity on U.S. West Coast groundfish stock assessments.
11:15–11:30 Ned Laman, AFSC Effect of reducing sampling density on design- and model-based estimates of abundance from groundfish surveys in the Gulf of Alaska.
11:30–11:45 Gwladys Lambert, CEFAS Reducing effort in a stratified fixed station survey – impact on survey indices and assessment of a data rich and data-limited stock.
TOR II. Develop key quality metrics that can be used to describe “total survey uncertainty” for survey derived indices of abundance for common survey designs.
11:45–12pm Jim Thorson, AFSC Measuring the impact of increased ageing effort: theory and case-study demonstration
12:00–12:15 Stan Kotwicki, AFSC The effect of variable sampling efficiency on the reliability of observation error as a measure of uncertainty in abundance indices from scientific surveys.
12:15–1:15 LUNCH NOAA Cafeteria
1:15–1:30 Elaina Jorgensen, AFSC Systematic reduction in survey effort and the effect on variance of fish abundance.
1:30–1:45 Peter Munro, AFSC Comparing three estimators of change in trawl survey mean catch per unit effort (CPUE) the Mean Squared Error (MSE) of the estimate under different simulated scenarios.
1:45–2:00 Paul Spencer, AFSC Variance propagation from fishery-independent surveys to the stock assessment outputs.
TOR III. Define “changes to survey designs” that require inter-survey calibration and what changes can be resolved by a model-based approach to index generation.
2:00–2:15 Paul Von Szalay, AFSC A Comparison of Bottom Trawl Sampling Strategies in the Gulf of Alaska: Design vs. Model-Based Approaches.
2:15–2:30 Kresimir Williams, AFSC Cameras vs Catch: potential effects of implementing open codend tows for acoustic midwater fish surveys.
2:30–2:45 Jason Conner, AFSC Effect of reducing the sampling density of the eastern Bering Sea shelf survey by comparing three station allocation designs (simple random, stratified random, random-start systematic) using design-based and model-based estimators of mean and variance.
2:45–3:00 Jennifer Blaine, WDFW Puget Sound scientific bottom trawling: sampling design changes and consequences.
TOR IV. Develop methods that can provide quantitative decision-making tools describing the impacts on the quality of the survey deliverables and advisory products.
3:15–3:30 Meaghan Bryan, AFSC The Impact of survey frequency and intensity on detecting environmental anomalies and shifts in abundance.
3:30–3:45 Curry Cunningham, UAF Implications of changes in bottom trawl survey effort on the quality of stock assessment results.
3:45–4:00 Sven Kupschus, CEFAS Resampling survey data to assess the effects of survey changes on management metrics from assessments.
4:00–4:15 Lauren Rogers, AFSC Evaluation of a survey with an adaptive sampling domain to capture climate-driven shifts in larval fish distributions
4:15–4:30 Jon Richar, AFSC Considering changes in sampling density and survey frequency, and their effects on eastern Bering Sea crab population time series.
4:30–4:45 Chris Rooper DFO Accounting for habitat variables to improve abundance indices in Alaska trawl surveys with an emphasis on results from averaging multiple modeling methodologies.
4:45–5:00 Nicola Walker, CEFAS Is the North Sea IBTS oversampled – computer-based study of the effects of reduced sampling on stock assessments?
5:00–5:15 Cynthia Yeung, AFSC Survey Effort Reduction Impacts on the Assessment of the Thermal State of the Bering Sea Ecosystem.
5:15–5:30pm Discussion, formulating specific topics for sub-working groups. Dividing into sub-working groups
6:00pm No-host Social and Welcome