Bacterioplankton and bacteriobenthos in surface layer waters and sediments between the Sakhalin Island and the Eastern Asia in June 2006, supplement to: Karetnikova, E A; Garetova, L A (2009): Bacterioplankton and bacteriobenthos of the Amur Estuary and the adjacent areas in the summer of 2006. Translated from Okeanologiya, 2009, 49(3), 409-417, Oceanology, 49(3), 377-384

• Main Authors: Karetnikova, E A, Garetova, L A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2009
• Subjects: Multiple investigations; Archive of Ocean Data ARCOD; Sakhalin
• Online Access: https://dx.doi.org/10.1594/pangaea.767436; https://doi.pangaea.de/10.1594/PANGAEA.767436

This work presents results of a study of plankton and benthic microbiocenoses of the Amur River estuary. It is shown that distribution of total abundance and indicator groups of bacteriobenthos are characterized by stronger heterogeneity compared with bacterioplankton and that it depends on the Amur River runoff and bottom type. The river runoff helps by increasing overall bacterioplankton abundance in the near-mouth part of the estuary. Microorganisms utilizing low concentrations of organic matter (OM) play major role in processes of OM utilization in water and bottom sediments. Saprophytic bacteria play a significant role in OM utilization only in water at certain sampling sites in the Tatarsky Strait and Sakhalin Bay and in bottom sediments sampled in the mouth part of the estuary. Some parts of the estuary subjected to organic contamination are found according to microbiological characteristics. It is shown that fluctuation of salinity leads to change of the role of bacteria with different food demands in the microbial community.