Distribution of Zooplankton Biomass
in the Barents Sea in Autumn 1997

E. I. Musaeva and V. I. Gagarin

Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia

Received June 17, 1998; in final form, November 30, 1999

Abstract—Samples of zooplankton were collected in the Barents Sea during cruise 11 of R/V Akademik
S.Vavilov in September–October 1997. Three different sampling methods were used: 30-l big bottle, Judey net,
and BR net. The analysis revealed >40 species of zooplankton. The greatest species diversity occurred in the
zones of junction of waters of different origin. Within the 100-m upper water layer, the zooplankton biomass
was rather high: 32 g/m² on average. The highest biomass was observed in the northeastern part of the region
under study and over the shelf of Russkaya Gavan’ Bay (Novaya Zemlya Island). The lowest biomass occurred
in the southern part and in the region of the Gusinaya Bank. The mean autumn value of the zooplankton biomass
in the 100-m upper layer (321 mg/m³) slightly exceeded the multiannual average for the summer period
(200mg/m³).

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