We will be conducting an ichthyoplankton survey in the waters contiguous to Kodiak Island, Alaska. This work is needed to describe larval fish assemblages on the shelf and slope in late summer and early fall, and to study the transport and early life history of larval forage fishes (ex: capelin). Zooplankton data and data on physical characteristics of the water column will also be collected. Limited trawling activities for juvenile groundfishes (age-0 pollock) and adult forage fishes (capelin) will be conducted as well to study differences in production between offshore banks and troughs and nearshore Kodiak Island.

To recover and deploy several oceanographic moorings. To complete Conductivity, Temperature, and Depth (CTD) profiler casts, California Cooperative Oceanic Fisheries Investigation (CalCOFI) Vertical Egg Tow (CalVET) and Marine Assessment Monitoring and Prediction (MARMAP) Bongo tows near the mooring sites and along the 70-meter isobath in the Bering Sea.

NPCREP bongo cruise

We will conduct fieldwork to continue a study designed to compare age-0 pollock and their prey field between two separate pollock nursery regions in the western Gulf of Alaska. We will also investigate prey switching by arrowtooth flounder, which is of interest because high abundance of other small midwater fishes (e.g., capelin, eulachon) may relieve predation-related mortality of age-0 pollock. This work is needed to more rigorously evaluate food-related merits of two important pollock nurseries, and to begin to address the potential for prey switching to act as a density-dependent community stabilizing mechanism.

The objectives of this cruise are to conduct an ichthyoplankton survey and process oriented studies in the region between Unimak Pass, the Shumagin Islands, and through Shelikof Strait to Kodiak Island, Alaska, so that we may estimate the abundance, transport, and factors influencing the survival of young walleye pollock larvae. We will also occupy stations on Line 8 to continue our 19 year time series of environmental and biological conditions in Shelikof Strait.

We will conduct an ichthyoplankton survey in the Gulf of Alaska in the vicinity of Kodiak Island, Alaska. This area is a known nursery ground for a variety of species of fish - walleye pollock, Pacific cod, rock sole, and Pacific halibut. Work is needed to describe larval fish and zooplankton assemblages in summer, and to examine the movement of water and associated biota from the slope onto the shelf. We will also conduct some trawling to describe abundances of juvenile groundfishes and small forage fishes in selected canyons and in the vicinity of Kodiak Island. Six satellite-tracked drifters will be released to study current trajectories in the vicinity of Port Lock Bank. Conductivity, Temperature, and Depth profiler casts will be made to characterize water column properties, collect nutrient and chlorophyll information, and to use to evaluate the flow field.

The objectives of this cruise were to conduct an ichthyoplankton survey and process studies in the region between the Shumagin Islands and Shelikof Strait 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 26-year time series of environmental and biological conditions in Shelikof Strait. In addition to this sampling, stations selected from the main grid for the GOA-IERP research project were occupied to deploy the neuston gear to acquire larval fish of five target species (sablefish, walleye pollock, Pacific cod, arrowtooth flounder, and Pacific Ocean perch).

The objectives of this cruise were to conduct an ichthyoplankton survey and process oriented studies in the region between the Shumagin Islands and Shelikof Strait so that we could estimate the abundance, transport, and environmental factors influencing the survival of young walleye pollock larvae. Fresh standard length measurements were obtained at each station where larval pollock occurred to supply data for a larval survival index. Standard sampling protocols were used at 6 of the Line 8 stations to continue the historical database for this area.

The objectives of this cruise are to conduct an ichthyoplankton survey and process oriented studies in the region between Unimak Pass, the Shumagin Islands, and through Shelikof Strait to Kodiak Island, Alaska, so that we may estimate the abundance, transport, and factors influencing the survival of young walleye pollock larvae. We will also occupy stations on Line 8 to continue our 20 year time series of environmental and biological conditions in Shelikof Strait.

We conducted fieldwork to continue a study designed to compare age-0 pollock and their prey field among three separate pollock nursery regions in the western Gulf of Alaska (GOA). Data resulting from the work will also be used to extend a 5-yr time series (2000, 2001, 2003, 2005, 2007) of age-0 walleye pollock abundance in one of the nurseries. This work is needed to more rigorously evaluate suitability of three important pollock nurseries, and to evaluate age-0 abundance in the western GOA during late summer (September) as a recruitment predictor.