This research area is focused on improving and reducing uncertainty in stock assessment models of important commercial fish species in the Bering Sea through the collection of fisheries oceanographic indices. Data from the survey will be used to test the hypothesis - In the eastern Bering Sea young-of-the-year (YOY) condition scaled by abundance is an accurate and precise predictor of walleye pollock recruitment and can be used for stock assessment purposes. A SBE 49 was deployed synoptically with Bongo, CalVET and Tucker trawls used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

This research area is focused on improving and reducing uncertainty in stock assessment models of important commercial fish species in the Bering Sea through the collection of fisheries oceanographic indices. Data from the survey will be used to test the hypothesis - In the eastern Bering Sea young-of-the-year (YOY) condition scaled by abundance is an accurate and precise predictor of walleye pollock recruitment and can be used for stock assessment purposes. A SBE 49 was deployed synoptically with Bongo, CalVET and Tucker trawls used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

The primary objective was to conduct an assessment of eggs and larvae of Walleye Pollock (Gadus chalcogrammus) over the eastern Bering Sea shelf. The data collected will be used to examine the interactions among climate, weather, and ichthyoplankton distribution and abundance. This work is needed to describe larval fish assemblages and determine how physical and biological factors affect the transport and survival of fish larvae. The survey is a collaboration between two Alaska Fisheries Science Center (AFSC) programs, Ecosystems and Fisheries Oceanography Coordinated Investigations (Eco-FOCI), and Ecosystem Monitoring and Assessment (EMA). A SBE 49 was deployed synoptically with Bongo, CalVET and Tucker trawls used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

The primary objectives of this cruise will be to deploy and recover moorings in several locations in the Gulf of Alaska and the Bering Sea. Upon leaving Seward, 5 moorings will be deployed in the Gulf of Alaska in and around Gore Point. A SBE 19Plus was deployed synoptically with gear used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

The primary objective is to conduct an assessment of eggs and larvae of walleye pollock (Theragra chalcogramma) over the eastern Bering Sea shelf. We will also examine the interactions among climate, weather, and ichthyoplankton distribution and abundance. This work is needed to describe larval fish assemblages and determine how physical and biological factors affect the transport and survival of fish larvae. The cruise is a collaboration between two AFSC Programs, The Fisheries Oceanography Coordinated Investigations Program (FOCI) and the Ecosystem Monitoring and Assessment Program (EMA). A SBE 19Plus was deployed synoptically with gear used to sample icythoplankton and zooplankton at these locations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

The primary objective of this cruise will be mooring operations – including recoveries, deployments and searches - in the Gulf of Alaska and Bering Sea. Additionally, there will be biological sampling at mooring sites and the 70 m isobath line. A SBE 19Plus was deployed synoptically with gear used to sample icythoplankton and zooplankton at these locations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

This research area is focused on improving and reducing uncertainty in stock assessment models of important commercial fish species in the Bering Sea through the collection of fisheries oceanographic indices.

The objectives of the cruise were to conduct a trawl survey for YOY pollock from Prince William Sound to Unimak Island. PWS stations were not occupied during the survey due to lost time. Two cross shelf lines of CTDs were occupied to provide information on cross shelf flow. A short series of gear comparison tows were conducted in Kalsin Bay to compare catch composition and lengths of fishes collected in the anchovy trawl (Stauffer trawl) and the CanTrawl. Zooplankton was sampled using bongo nets. A SBE 49 was deployed synoptically with Bongo, CalVET and Tucker trawls used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

The objectives of the cruise were to conduct a trawl survey for YOY pollock from Prince William Sound to Unimak Island. PWS stations were not occupied during the survey due to lost time. Two cross shelf lines of CTDs were occupied to provide information on cross shelf flow. A short series of gear comparison tows were conducted in Kalsin Bay to compare catch composition and lengths of fishes collected in the anchovy trawl (Stauffer trawl) and the CanTrawl. Zooplankton was sampled using bongo nets. A SBE 49 was deployed synoptically with Bongo, CalVET and Tucker trawls used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.

The objectives of this cruise were to conduct an ichthyoplankton survey and process studies in the region between the Shumagin Islands and Shelikof Strait and then from SE Kodiak to the Kenai Peninsula so that we could estimate the abundance, transport, and factors influencing the survival of young walleye pollock larvae. We also occupied six of the stations on Line 8 to continue our 27-year time series of environmental and biological conditions in Shelikof Strait. In addition to this sampling, 43 stations selected from the grid for the GOA-IERP research project were occupied on the shelf break as well as on the NE side of Kodiak Island to acquire larval fish of five target species (sablefish, walleye pollock, Pacific cod, arrowtooth flounder, and Pacific Ocean perch). A SBE 19Plus was deployed synoptically with gear used to sample icythoplankton and zooplankton at selected stations. Temperature and Conductivity were measured and Salinity and Sigma-T were derived from these measurements. While the SeaCAT measures values on the down and upcasts, only the upcasts are used.