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ESSIM Ecosystem-Based Management on the Eastern Scotian Shelf. Tana Worcester Centre for Science Advice Maritimes Region, Canada The ESSIM Area …a shared commitment to work together for our ocean and our future… ESSIM Objectives Governance Ecosystem Maintain: • Biodiversity Use • Human Productivity • Habitat Ecosystem Objectives Conserve community diversity and habitat integrity. Prevent introduction & spread of invasive species. Maintain a healthy trophic structure. Protect and recover species-at-risk. Lessons Learned Broad objectives can be useful. Should be relevant across a range of scales and activities. Dialogue between science, managers and stakeholders is essential. Objectives will evolve over time. Don’t get bogged down in semantics! Habitat Characterization Surficial Geology Benthic Disturbance Scope for Growth Ecologically Significant Species and Areas Laurentian Channel & slope The Noodles Deep holes of Canso area Canso Bank Deep holes north of Banquereau Bank Banquereau Bank - fish sub-populations Eastern Shoal Middle Bank The Bull Pen, the Cow Pen and the Owl Emerald Basin and The Patch Gully Trough Sable Island Area Sambro Bank Emerald Bank & Western Bank Haldimand Canyon Shortland Canyon The Gully ^ Logan Canyon Cod Blue Whale Clams / Scallops Corals Scotian Slope/Shelf Break Lessons Learned Ecosystem characterization is useful in developing scientific understanding. It is also time and resource intensive. How will it be used for management? e.g., development of an ecosystem model to be used in scenario testing? e.g., development of a decision-support tool for conflict resolution? e.g., used in MPA network design? Impact Analysis Noise Shipping Drilling,Seismic Cables, Waste Lessons Learned Lots of information available on the impacts of specific activities – still work to be done. Cumulative effects are harder to monitor, map and evaluate. GIS can be a helpful tool for impact analysis and decision-making, but need better georeferencing of human activities. Need indicators that apply across a variety of activity types. Indicators and Reference Points Lessons Learned Long-time series data are a valuable resource – use what you have. Determine what types of information managers actually use to make decisions. Trends or rates of change can be useful when limits and thresholds aren’t known. Weight of evidence approach can provide a strong basis for decisions. However, theory/modelling is also required. DFO Maritimes Science Role Provision of chemical, physical and biological data. Oceanographic modelling. Research on impacts: aquaculture, fisheries (by-catch, benthic impacts), oil and gas. Data management.