. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . Figure 66-12. Distribution of Yoldia amygdalea based on collections taken with a grab, pipe dredge, clam dredge, and otter trawl. shallow depths off the Alaska Peninsula and Unimak Island (Figs. 66-2, 66-22, and 66-23). The greatest abundance of young of the species occurred at Stations 9, 55, and 64 (Table 66-4). Spisulapolynyma was associated with sediment types ranging from medium sand to medium silt () (Tables 66-1 and 66-2, Figs. 66-2 to 66-6, 66-22, and 66-23, Table 66-5).
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . Figure 66-12. Distribution of Yoldia amygdalea based on collections taken with a grab, pipe dredge, clam dredge, and otter trawl. shallow depths off the Alaska Peninsula and Unimak Island (Figs. 66-2, 66-22, and 66-23). The greatest abundance of young of the species occurred at Stations 9, 55, and 64 (Table 66-4). Spisulapolynyma was associated with sediment types ranging from medium sand to medium silt () (Tables 66-1 and 66-2, Figs. 66-2 to 66-6, 66-22, and 66-23, Table 66-5). Major Component of Collection: Fifty-nine percent of S. polynyma occurred in fine sand to medium silt () with 59 percent of the clams at sediment sorting values from > to (Table 66-6). Ninety-four percent of S. polynyma occurred at depths from 50 to 100 m (Table 66-7). Minor Component of Collection: Forty-one percent of the clams occurred in medium to fine sand ( ) with 5 percent of the species at sorting values of , and 3 percent at > Seven percent of S. polynyma occurred at depths of <25-50 m (medium to fine sand). Bivalve mollusks (mixed species) were most numerous at stations on the midportion of the southeastern shelf (Figs. 66-1, 66-2, and 66-24; Table 66-8); for example, Station 28 had 3,374 clams/m^, Station 29, 834/m^; Station 19, l,770/m2; Station 935, 796/m^ ; and Station 12, 482/m2. Large num- bers of clams were also found at Stations 63 and 64
Size: 2336px × 2139px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookcollectionamericana, bookleafnumber560
