Scientists from the NWFSC conducted an inter-vessel calibration (IVC) with a Fisheries and Oceans Canada (DFO) vessel (Sir John Franklin) as well as lead investigations into the Simrad EK80 scientific echosounder system, advanced technologies, and associated ecosystem components (e.g., research focused on rockfish and krill) in support of the Pacific hake (Merluccius productus) stock assessment.

Our routine ecosystem survey will make hydrographic measurements with a CTD, collect water samples for chemical analyses with a Niskin bottle rosette, and collect zooplankton samples with towed plankton nets at an array of stations along transect lines.

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The following are specific objectives for the spring CalCOFI. Continuously sample pelagic fish eggs using the Continuous Underway Fish Egg Sampler (CUFES). The data will be used to estimate the distributions and abundances of spawning hake, anchovy, mackerel, and early spawning pacific sardine. Continuously sample multi-frequency acoustic backscatter using the Simrad EK80 and the Simrad ME70. The data will be used to estimate the distributions and abundances of coastal pelagic fishes (e.g., sardine, anchovy, and mackerel), and krill species. Continuously sample sea-surface temperature, salinity, and chlorophyll-a using a thermosalinometer and fluorometer. These data will be used to estimate the physical oceanographic habitats for target species. Continuously sample air temperature, barometric pressure, and wind speed and direction using an integrated weather station. Sample profiles of seawater temperature, salinity, chlorophyll-a, nutrients, and phytoplankton using a CTD with water-sampling rosette and other instruments at prescribed stations. Measurements of extracted chlorophyll and phaeophytin will be obtained with a fluorometer. Nutrients will be measured with an auto-analyzer. Sample the light intensity in the photic zone using a standard secchi disk in conjunction with a daytime CTD station. Sample plankton using a CalBOBL (CalCOFI Bongo Oblique) at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton and zooplankton species. Sample plankton using a Manta (neuston) net at prescribed stations. These data will be used to estimate the distributions and abundances of ichthyoplankton species. Sample the vertically integrated abundance of fish eggs using a Pairovet net at prescribed stations. These data will be used to quantify the abundances and distributions of fish eggs. Sample plankton using a PRPOOS (Planktonic Rate Processes in Oligotrophic Ocean Systems) net at all prescribed CalCOFI stations on lines 90.0 and 80.0 as well as stations out to and including station 70.0 on lines 86.7 and 83.3 and station 81.8 46.9. PRPOOS will not be towed on SCCOOS stations. These data will be used in analyses by the LTER (Long Term Ecological Research) project. Continuously sample profiles of currents using the RDI/Teledyne Acoustic Doppler Current Profiler. This will be dependent on the ability to synchronize the ADCP’s output with the EK80 and ME70. The EK80 and ME70 will hold priority over the ADCP. Continuously observe, during daylight hours, seabirds and marine mammals. These data will be used to estimate the distributions and abundances of seabirds and marine mammals.

Operating area: Transect sampling in coninental shelf and slope waters from Crescent City, California (41.9*N) to La Push, Washington (47.9*N) including long transect lines out to 200 nm off Crescent City, CA and Newport, OR. Summary of Objectives: Hydrographic measurements with a CTD, collect water samples for chemical analyses with a Niskin bottle rosette, and collect zooplankton samples with towed plankton nets at an array of stations along transect lines.

2021 Joint U.S.and Canada Integrated Ecosystem and Pacific Hake Acoustic Trawl Survey

This survey is a continuation of long-term studies of the Northern California Current (NCC) pelagic ecosystem and includes study of broad-scale patterns of hydrography, phytoplankton and zooplankton and ocean acidification/hypoxia in the NCC Large Marine Ecosystem off Oregon and Washington. Ecosystem studies were initiated in 1996, and studies of ocean acidification/hypoxia were initiated in 2010.

Scientists from the NOAA/NWFSC and DFO-Canada conducted a full acoustic-trawl survey of Pacific hake (Merluccius productus) from approximately Point Conception California up to Dixon Entrance Alaska. This dataset only includes the raw acoustic data collected by the NOAA/NWFSC vessel.

NWFSC will conduct acoustic and visual surveys of marine mammals from 15-29 October 2021 along the Washington, Oregon, and Canadian coasts in order to determine the occurrence, diet, and health of Southern Resident killer whales.

This survey will be the U.S. contribution to the International Year of the Salmon’s (IYS’s) Pan Pacific Survey of high seas salmon habitats. The entire IYS Pan Pacific Survey will use 4 ships (including the NOAA Ship Bell M. Shimada) to sample Pacific salmon and their ecosystems across a grid of stations spanning the North Pacific Ocean from 50°E to 135°W. The overarching goal of this survey is to understand how increasingly extreme climate and associated physical environmental variability influence the abundance, distribution, growth, and survival of Pacific salmon in winter, and the ecosystem that supports salmon. To achieve this goal, we will measure or sample physical habitat characteristics, zooplankton, and fish across a grid of stations in the western Gulf of Alaska. The expected project period for this cruise is February 1, 2022, through March 7, 2022 on the NOAA Ship Bell M. Shimada.