Vol. 53 - Alaska Resources Library and Information Services

made them imperfect in areas (Fig. 3.13, 3.14).
Stations were grouped
in broad depth intervals of 20-40 m, 41-60 m, and 61-80 m because
narrower depth intervals were not common in all transect lines A
to F. In fact, depths to 80 m were only collected on lines A to C,
while D and E went only to 70 m and F had a deepest station at 63 m
(Fig. 3.13).
The longshore pattern of distribution is one of relatively low
densities inside 40 m with peak abundance of about 2,000 larvae/100 m²
on the E line off Port Moller (Fig. 3.14).
Virtually no larvae were
found from mid Unimak Island through Black Hills, a distance of about
180 km. In contrast, densities between 41-60 m reached 6600 larvae/100
m² by the C line off Izembek Lagoon (Fig. 3.13), and averaged
6,300 to over 12,500 m 2 up to Cape Seniavin within this depth interval
(Table 3.2; Fig. 3.13).
Larvae were not found, or only in very low
densities, farther offshore between 61-80 m from Unimak Island to Black
Hills (Fig. 3.14).
However, abundance off Nelson Lagoon and Port
Moller was very high at depths from 61-70 m, and averaged 15,300
larvae/100 m 2 on the E line with a range from 8,800-24,700/100 m 2
(Fig. 3.14; Table 3.2).
Summary:
1) Larval densities in June were very low nearshore
from 10-12 km off the coast throughout the entire study area.
2) Peak
abundance occurred 25-30 km offshore from Amak Island to Cape Seniavin.
3) Abundance declined farther offshore in water of 61-80 m depth in the
western portion (stratum I) of the sampling area (Fig. 3.13),
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