Composition and distribution of the benthic fauna of the soft soils of the Far Eastern Marine Biosphere State Nature Reserve are still not sufficiently explored. In 1963, the hydrobiological monitoring in this area were conducted only in waters of the bays Sivuch’ya and Kalevala (Mikulich & Biryulina, 1970). Expedition of the Pacific Research Institute of Fisheries and Oceanography (TINRO), in the 70 ‘s, who studied the patterns of distribution of benthos in the Peter the Great Gulf, received data for six stations, located south of the island Furugelm (Klimova, 1971; Pavluchkov, 1975). Research on the southern section of the reserve is conducted by specialists of the Institute of Marine Biology (IMB) in 1980-1987 to inventory the populations of benthic invertebrates and explore some factors were mostly not published or contains a little informative and hard-to-reach theses (Gulbin & Ozolinsh, 1986, 1989; Ozolinsh, 1986).
In 1996, IMB was the first integrated ecological expedition in the South-western part of the Peter the Great Gulf and the mouth of the Tumannaya river. The main objective of research was to examine hydrological and hydrochemical parameters, the level of contamination, and the condition of the benthic and pelagic communities (Belan, 2000; Orlova et al., 2000; Shulkin & Moshchenko, 2000) but the data on the composition and structure of the benthic communities of the soft soils for all areas of the reserve are not yet available. The purpose of this article to fill a gap in the characterization of this faunal composition and main regularities of distribution of macrobenthos bottom-dwelling communities of soft soils.
Marine Reserve area is 64311.6 hectares (643.116 km2) is about 10% of the Peter the Great Gulf of the Japan Sea. It would seem, is not very much, but at the same time, the reserve area is superior to the territory of those States, such as Bahrain, Liechtenstein, Malta and two dozen others. The island and free-standing sea rock outcrops form columnar rocks – kekura occupy only about 1.5% of the area of the reserve, the rest-area (actually, reserve, named after the Marine.-Special aesthetic, scientific and historical value reserve. a total of 10 islands and more than 20 smaller islets, rocks and kekuras, often do not have their own names on the map. the largest island – Bol’shoi Pelis, its area is about 410 acres (Figure 1).
In 2006-2008, 2010, took place the hydrobiological shooting on soft soil at 119 stations and cuts in the reserve and surrounding areas 9 areas (Figure. 2). Sampling conducted from June to September from on board the m/v “Professor Nasonov”and “Vnimatel’nyi”. Tests chose of grab Van-Wines with an area of 0.25 m2 at a depth of 40 m, furthermore, at each station, produced records of macrobenthos in autonomous diving gear with square 5 m2. Soil elutriate on a sieve with mesh 0.1 mm.
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(Author: Latypov Yuri Yakovlevich