Abstract Title

Session S-09D: Salmon Recovery: Implementation and Progress II

Presenter/Author Information

Hans DaubenbergerFollow

Keywords

Species and Food Webs

Start Date

1-5-2014 5:00 PM

End Date

1-5-2014 6:30 PM

Description

The Port Gamble S’Klallam Tribe partnered with NOAA Fisheries’ Northwest Fisheries Science Center in the spring of 2011 to evaluate the status of the Puget Sound’s nearshore pelagic foodweb. The Tribe’s primary interest in this undertaking was to investigate the hypothesis currently guiding salmon recovery within the nearshore habitats of the Hood Canal and Eastern Strait of Juan de Fuca. The Port Gamble S’Klallam Tribe conducted hydroacoustic surveys in conjunction with surface trawls in 2011 and again in 2012. The hydroacoustic sampling employed the use of a BioSonics DT-X Scientific Echosounder with a 200 kHz split beam digital transducer. The transducer was mounted on a towed body with a side-looking orientation. In 2011 and 2012 hydroacoustic sampling was conducted south from Tala Point to the Duckabush River estuary on the west side of Hood Canal, and north from Seabeck Bay to Foulweather Bluff on the east side of Hood Canal. In 2012, hydroacoustic sampling was also conducted in Port Ludlow Bay, Kilisut Harbor and the Port Townsend Canal. Hydroacoustic data was collected using BioSonics Visual Acquisition software and was analyzed using Myriax Echoview software. The product of the analysis is a geospatial snapshot of single target (fish) densities at ~1000 meter intervals. When plotted, the hydroacoustic data from 2011 and 2012 resulted in uneven density distributions of single target detections. In 2011, the highest densities occurred in Tala Point, Twin Spits, Hannon Point, Port Gamble Bay, Spring Creek, Nordstrom Creek, Unnamed Pocket Estuary (Lat. 47.776373, Long. -122.746410), Broad Spit, Frenchmans Point, and Pleasant Harbor. In 2012, the highest densities occurred in Kilisut Harbor, Port Townsend Canal, Port Ludlow, Tala Point, Twin Spits, Hannon Point, Port Gamble Bay, Spring Creek, Nordstrom Creek, Cougar-Kinman Creek, Big Beef Creek, Zelatched Point, Broad Spit, Frenchmans Point, Point Whitney, Jackson Cove, Turner Creek, and Pleasant Harbor.

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May 1st, 5:00 PM May 1st, 6:30 PM

Mapping Nearshore Nodal Habitat of Juvenile Salmonids within the Hood Canal and Admiralty Inlet

Room 6C

The Port Gamble S’Klallam Tribe partnered with NOAA Fisheries’ Northwest Fisheries Science Center in the spring of 2011 to evaluate the status of the Puget Sound’s nearshore pelagic foodweb. The Tribe’s primary interest in this undertaking was to investigate the hypothesis currently guiding salmon recovery within the nearshore habitats of the Hood Canal and Eastern Strait of Juan de Fuca. The Port Gamble S’Klallam Tribe conducted hydroacoustic surveys in conjunction with surface trawls in 2011 and again in 2012. The hydroacoustic sampling employed the use of a BioSonics DT-X Scientific Echosounder with a 200 kHz split beam digital transducer. The transducer was mounted on a towed body with a side-looking orientation. In 2011 and 2012 hydroacoustic sampling was conducted south from Tala Point to the Duckabush River estuary on the west side of Hood Canal, and north from Seabeck Bay to Foulweather Bluff on the east side of Hood Canal. In 2012, hydroacoustic sampling was also conducted in Port Ludlow Bay, Kilisut Harbor and the Port Townsend Canal. Hydroacoustic data was collected using BioSonics Visual Acquisition software and was analyzed using Myriax Echoview software. The product of the analysis is a geospatial snapshot of single target (fish) densities at ~1000 meter intervals. When plotted, the hydroacoustic data from 2011 and 2012 resulted in uneven density distributions of single target detections. In 2011, the highest densities occurred in Tala Point, Twin Spits, Hannon Point, Port Gamble Bay, Spring Creek, Nordstrom Creek, Unnamed Pocket Estuary (Lat. 47.776373, Long. -122.746410), Broad Spit, Frenchmans Point, and Pleasant Harbor. In 2012, the highest densities occurred in Kilisut Harbor, Port Townsend Canal, Port Ludlow, Tala Point, Twin Spits, Hannon Point, Port Gamble Bay, Spring Creek, Nordstrom Creek, Cougar-Kinman Creek, Big Beef Creek, Zelatched Point, Broad Spit, Frenchmans Point, Point Whitney, Jackson Cove, Turner Creek, and Pleasant Harbor.