. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . Figure 65-4. Distribution and biomass of total epifauna in the northeastern Bering Sea. Invertebrates included 11 phyla, 94 families, and 186 species. The phyla containing the majority of the species were MoUusca (71 species), Arthropoda (39), Echinodermata (25), and Annelida (16); Urochordata (Chordata), Ectoprocta, and Cnidaria had 10, 9, and 8 species, respectively (Tables 65-1, 65-2, and 65-3). Echinodermata were dominant in biomass ( percent). Mollusca, Arthropoda, and Urochorda
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . Figure 65-4. Distribution and biomass of total epifauna in the northeastern Bering Sea. Invertebrates included 11 phyla, 94 families, and 186 species. The phyla containing the majority of the species were MoUusca (71 species), Arthropoda (39), Echinodermata (25), and Annelida (16); Urochordata (Chordata), Ectoprocta, and Cnidaria had 10, 9, and 8 species, respectively (Tables 65-1, 65-2, and 65-3). Echinodermata were dominant in biomass ( percent). Mollusca, Arthropoda, and Urochordata contributed , , and percent of the total biomass, respectively. Fifteen species made up percent of the epifaunal biomass. The most important species were the echinoderms Asterias amurensis ( percent of the total biomass) and Leptasterias polaris aceruata ( percent) and the moWuskNeptunea heros ( percent). The 0-40 m depth stratum was dominated by Asterias amurensis and Neptunea heros; deeper stations, >40-100 m, had higher concentrations of
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