Pacific Ocean Shelf Tracking (POST) Jonathan Thar POST Research Program Coordinator Vancouver Aquarium
How POST worksPOST ‘Coastal Curtains’ of hydrophones Shoreline Continental Shelf edge →
POST’s recent growth New lines: Pt. Reyes, CA and Prince William Sound (PWS), AK New lines: Pt. Reyes, CA and Prince William Sound (PWS), AK Further expansion into PWS, Puget Sound, and piloting deep-water deployments in SE Alaska Further expansion into PWS, Puget Sound, and piloting deep-water deployments in SE Alaska POST array now spans over 3000 km POST array now spans over 3000 km Ever-growing data clearinghouse capabilities Ever-growing data clearinghouse capabilities Hinchinbrook Entrance and Beartrap Bay Admiralty Inlet Chatham Strait and Cape Ommaney Cape Ommaney
Preliminary Synthesis Conclusions Juvenile salmon migration and survival through freshwater and marine migration Juvenile salmon migration and survival through freshwater and marine migration Mortality of adults migrating back to spawn Mortality of adults migrating back to spawn Extensive migrations highlighting international conservation issues (e.g. sturgeon) Extensive migrations highlighting international conservation issues (e.g. sturgeon) A tool to directly test hypotheses (e.g. how dams, sea lice, UV, wild vs. hatchery, etc. may affect survival) A tool to directly test hypotheses (e.g. how dams, sea lice, UV, wild vs. hatchery, etc. may affect survival)
Distribution Can track marine and anadromous animals 1000’s km in the ocean and 100’s km in freshwater (seamlessly) Can track marine and anadromous animals 1000’s km in the ocean and 100’s km in freshwater (seamlessly) Rate and distance of movement of both salmon and sturgeon have been truly amazing Rate and distance of movement of both salmon and sturgeon have been truly amazing Would like to be better able to identify where species go and survival bottlenecks – need increased resolution of array Would like to be better able to identify where species go and survival bottlenecks – need increased resolution of array POST is proving valuable in association with other tools (e.g. genetics, physiological testing) POST is proving valuable in association with other tools (e.g. genetics, physiological testing) Will continue to expand scope to include other species Will continue to expand scope to include other species
New applications of POST Increasing interest particularly with sablefish, halibut, lingcod, rockfish and herring. Increasing interest particularly with sablefish, halibut, lingcod, rockfish and herring. POST could assist in providing important information to assist management of these species. POST could assist in providing important information to assist management of these species.
Visualization & Communication
Societal Impact of Results to Date Societal Impacts Realized largely in the future, although current results are driving healthy discussion and debate Realized largely in the future, although current results are driving healthy discussion and debate Roles of dams in salmon migration and survival; is barging smolts down-river really beneficial? Roles of dams in salmon migration and survival; is barging smolts down-river really beneficial? Assist ecological restoration efforts by mapping life histories in regions such as Puget Sound Assist ecological restoration efforts by mapping life histories in regions such as Puget Sound Sturgeon conservation now considering international issues (e.g. US green sturgeon and Canadian white sturgeon) Sturgeon conservation now considering international issues (e.g. US green sturgeon and Canadian white sturgeon) g
Limits to Knowledge Receiver location – movement between or beyond receivers Receiver location – movement between or beyond receivers Tag size – lower limit restrictions Tag size – lower limit restrictionsSolution? Convergence of acoustic and archival technologies Convergence of acoustic and archival technologies allow animals to upload movement and interaction data from their entire life history with new generation tags and receivers allow animals to upload movement and interaction data from their entire life history with new generation tags and receivers Achievable by 2020, with developments driven by POST, TOPP and the Ocean Tracking Network Achievable by 2020, with developments driven by POST, TOPP and the Ocean Tracking Network Off shelf behaviour will also become knowable with “roving receivers” Off shelf behaviour will also become knowable with “roving receivers”