Composition and dynamics of the Black Sea benthopelagic plankton and its contribution to the near-shore plankton communities

PLoS One. 2014 Jun 19;9(6):e99595. doi: 10.1371/journal.pone.0099595. eCollection 2014.

Abstract

At a shallow (7 m) near-shore sampling site in the Black Sea we analyzed composition, abundance, and biomass of benthopelagic organisms and the contribution these animals make to the total plankton. The site was monitored across several years (1996-2001; 2006-2007) whilst for 1999-2000 the seasonal variations were analysed. A total of 321 samples from Golubaja Bay near Novorossiysk (44°34'31.04″ N, 37°58'45.11″ E) in 1996-2007 were taken with a Judey net. The benthopelagic fauna was represented by 69 taxa, a diversity comparable to similar shelf areas. The benthopelagic component played an important role in near-shore plankton communities in the Black Sea accounting for 50% of the total zooplankton biomass at night during all seasons. Abundance and biomass of the benthopelagic animals showed seasonal fluctuations, the highest biomass being recorded during winter (>75% of the total zooplankton biomass) and early spring due to large amphipods, whilst the highest abundances occur during late summer because of numerous young stages of various taxa. Amphipods, mysids, and decapods are the main contributors to the plankton biomass and abundances. Both night and daytime samples are strongly recommended for the adequate description of the near-shore plankton communities.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amphipoda / physiology*
  • Animal Distribution / physiology*
  • Animals
  • Biomass
  • Black Sea
  • Decapoda / physiology*
  • Ecosystem
  • Photoperiod
  • Population Dynamics
  • Russia
  • Seasons
  • Zooplankton / physiology*

Grants and funding

The studies were supported by the Ministry of Education and Science of the Russian Federation and by the Program for a Basic Research of the Presidium of the Russian Academy of Sciences. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.