8MF03 Seacat data

공공데이터포털

The primary objective of this cruise will be the recovery and deployment of moorings in the Gulf of Alaska and Bering Sea.

4MF03 SeaCAT Data

공공데이터포털

We will conduct an ichthyoplankton survey in the Bering Sea in the vicinity of Unimak Island, Alaska. This work is needed to describe larval fish assemblages in the Bering Sea (slope, outer shelf, and middle shelf) in spring. In particular, this area is a known spawning ground for walleye pollock, and abundances of pollock larvae at this time of year are high. Zooplankton data and data on physical characteristics of the water column will also be collected.

1MF08 SeaCAT Data

공공데이터포털

We will conduct bottom trawl sampling in Bering Canyon to collect ripe adult Greenland halibut (Reinharditus hippoglossides), and we will conduct an ichthyoplankton survey in the same vicinity to collect ichthyoplankton. This work is needed to describe Greenland halibut spawning ecology, as well as the distribution of eggs and larvae over the slope and in Bering Canyon in winter. The work will also be used in the study of transport and early life history of this species. Data on physical characteristics of the water column will also be collected. We will also deploy 2 oceanographic instrumentation moorings, one in Bering Canyon and one on the EBS shelf in the vicinity to Unimak Island.

6MF07 SeaCAT Data

공공데이터포털

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.

5MF05 SeaCAT Data

공공데이터포털

Eco-FOCI will conduct an ichthyoplankton survey in the Bering Sea in the vicinity of Unimak Island, Alaska. This work is needed to describe larval fish and zooplankton assemblages in the Bering Sea - outer shelf, middle shelf - in the spring. In particular, this area is a known spawning ground for walleye pollock, northern rocksole, Pacific cod, and Alaska plaice, and abundances of larvae at this time of year are high. Data on physical characteristics of the water column will also be collected. Satellite tracked drifters will be released in the Unimak Island vicinity to study depth-discrete current trajectories and to test an oceanographic model of water movements for use in studies of larval transport.

8MF07 Seacat data

공공데이터포털

NPCREP bongo cruise

7MF03 Seacat data

공공데이터포털

The late-summer FOCI cruise is designed to address biological and methodological questions regarding age-0 walleye pollock in the western Gulf of Alaska. The primary cruise objective is to map age-0 pollock density over an area of high environmental heterogeneity, and to relate variations in fish density with environmental variability to provide some insight regarding pollock habitat suitability.

3MF02 SeaCAT Data

공공데이터포털

To conduct an ichthyoplankton survey in the Bering Sea in the vicinity of Unimak Island, Alaska. This work is needed to describe larval fish assemblages in the Bering Sea (slope, outer shelf, and middle shelf) in spring. Zooplankton data and data on physical characteristics of the water column will also be collected. The primary objective of this cruise was to examine community structure and transport of fish larvae and plankton on the continental shelf, slope, and deep water areas of the southeastern Bering Sea and Unimak Pass. Hydrographic, nutrient, and microzooplankton samples were also collected.

2DY11 SeaCAT Data

공공데이터포털

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).

4MF07 SeaCAT Data

공공데이터포털

We will conduct an ichthyoplankton survey in the Bering Sea in the vicinity of Pribilof Canyon, Alaska. This work is needed to describe larval fish and zooplankton assemblages in the Bering Sea - basin, slope, outer shelf - in spring. In particular, this area is a potential conduit for transport larvae of slope-spawning fishes (Greenland halibut, arrowtooth flounder, rockfish) to the continental shelf. Data on physical characteristics of the water column will also be collected. Satellite tracked drifters may be released in Bering and/or the Pribilof Canyon vicinity to study depth-discrete current trajectories.