Species Composition and Distribution of Zooplankton from Northeastern Sakhalin Shelf (sea of Okhotsk)
Oceanology(2018)
摘要
The species composition, density, biomass, and distribution of zooplankton of the northeastern Sakhalin shelf, Sea of Okhotsk (Chaivo, Pil’tunskii, and Morskoi regions) were studied in October 2014. Zooplankton was represented by 15 taxonomic groups, which were dominated by Copepoda (13 species). The average density and biomass was highest in the Chaivo region (14112 ± 4322 ind./m 3 , 395 ± 107 mg/m 3 ) and in the Pil’tunskii region (16692 ± 10707 ind./m 3 , 346 ± 233 mg/m 3 ); the abundance of detected taxonomic groups was minimal (8–12). The average density and biomass of zooplankton was up to 4304 ± 2441 ind./m 3 , 133 ± 77 mg/m 3 in the Morskoi region and increased with depth; the abundance of taxa was maximum (15). Four species of copepods made up the majority of the density and biomass of zooplankton: Acartia hudsonica , Eurytemora herdmani , Pseudocalanus newmani , and Oithona similis . In the Chaivo region, species of the genera Acartia , Eurytemora , and Oithona dominated and subdominated; in Pil’tunskii region, species of the genera Acartia and Oithona dominated and subdominated; and in the Morskoi region, species of the genera Oithona , Pseudocalanus , and Acartia dominated and subdominated.
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