. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . 175" 170 165" 160" Figure 66-13. Qualitative distribution of Yoldia amygdalea taken in tiie southeastern Bering Sea by van Veen grab (Feder et al., 1980). (554 and 1,380 clams/m^ , respectively) on the outer shelf and Station 71 (774 clams/m^) and Station 83 (574 clams/m^) on the central shelf. Of the 28 species of bivalve mollusks collected in the southeastern Bering Sea, 12 were found in at least 18 percent of the stations sampled by grab (Feder et al. 1980): Nucula tenu
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . 175" 170 165" 160" Figure 66-13. Qualitative distribution of Yoldia amygdalea taken in tiie southeastern Bering Sea by van Veen grab (Feder et al., 1980). (554 and 1,380 clams/m^ , respectively) on the outer shelf and Station 71 (774 clams/m^) and Station 83 (574 clams/m^) on the central shelf. Of the 28 species of bivalve mollusks collected in the southeastern Bering Sea, 12 were found in at least 18 percent of the stations sampled by grab (Feder et al. 1980): Nucula tenuis (77 percent of the stations sampled), Axinopsida serricata (56 percent), Thyasira flexuosa (39 percent), Nuculana fossa (36 percent), Yoldia scissurata (28 percent), Tellina lutea (28 per- cent), Cyclocardia crebricostata (25 percent), Yoldia amygdalea (23 percent), Macoma calcarea (23 per- cent), Clinocardium ciliatum (21 percent), Spisula polynyma (20 percent), and Serripes groenlandicus (18 percent). Bivalve (mixed species) biomass was generally greatest at stations on the inshore portion of the southeastern shelf (Figs. 66-1, 66-2, and 66-25, Table 66-9); for example. Station 5 had g/m^ ; Station 9, g/m^ ; Station 22, g/m^; Sta- tion 41, g/m^; Station 60, g/m^ ; and Sta- tion 59, g/m^. Large biomass values were also noted on the mid-portion of the shelf at Station 28, g/m^ ; Station 63, g/m^ g/m^ and Station 64, g/m^. DISCUSSION Station 71, Although bivalve mollusks and other infaunal species have patchy distribution, it is often possible to predict their occurrence on the basis of sediment particle size, sediment sorting (Sanders 1958, 1960; Stoker 1973, 1978; Shevtsov 1964), and depth. The data presented in this section suggest that, in general, the distribution of the bivalves Nucula tenuis, Nuculana fossa, Yoldia amygdalea, Cyclocardia crebricostata, Clinocardium ciliatum, Spisula polynyma, Tellina lutea, and Maco
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