Ocean Science Journal

The Korean Society of Oceanography (한국해양학회)
권호 표지

Polychaete Taxocenes Variability Associated with Sediment Pollution Loading in the Peter the Great Bay (the East Sea/Japan Sea)

  • Belan Tatyana A. (Far Eastern Regional Hydrometeorological Research Institute (FERHRI)) ;
  • Moschenko Alexander A. (Institute of Marine Biology, FEBRAS)
  • Published : 2005.03.31
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Abstract

Variations in species diversity and abundance of polychaete taxocenes that occurred in 1980-1989 under different contamination levels of bottom sediments were studied in three areas of Peter the Great Bay. The most polluted area was shown to be the Golden Horn Inlet where contaminant contents in the bottom sediments exceed the threshold values of negative biota alterations. Amursky Bay is characterized by a moderate level of contamination, while Ussuriysky Bay has the lowest level of contamination. Pollutant contents vary considerably within the same areas and their separate patches are polluted differently. An integral index characterizing the contamination of bottom sediments is proposed. This index is an average grade of the rank value of contaminant contents in sediments. The index was used to compare the contamination level and data on polychaete species diversity and abundance. The highest species diversity of polychaetes is found in the least affected zones. Monotonous decrease of the species number, as well as decrease in the indices of diversity and evenness, is correlated with pollution level increases. Significant growth of the average polychaete biomass and polychaete density is observed in the case of an increase of contamination from low to moderate levels. Conversely, the biomass and abundance of polychaetes decline following an increase in contamination.

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