Methodological preconditions for organization of sea ecological monitoring in dumping area of dredged ground
One of the greatest spoil dumping sites in the Black Sea is situated in the deepwater area immediately adjacent to the Kerch Strait. This fact has spurred YugNIRO to conduct, since 1988, the ecological monitoring of the marine environment in this area. Huge amounts of spoils (as much as two million metres super(3) were dumped in 1989) come from the regularly dredged Kerch-Enikale Channel more than 30 km long, passing throughout the Kerch Strait, and from harbours. The range of chemical parameters to be determined from the marine monitoring generally includes the loads of biogenic elements (phosphates, silica acid, nitrogen in various forms), heavy metals (mercury, lead, cadmium, chromium, zinc, and others) oil components (fractional and overall compositions), organochlorines, detergents, synthetic surfactants. These parameters were determined in the water, bottom sediments, and in the marine flora and fauna. An average value of total oil content of marine sediment has surpassed biochemical background by a factor of 2.3. The dumping of polluted dredging spoils is responsible for the formation of a local zone some 53 km super(2) in area around the dumping ground, in which the drastic effect on marine life, especially on bottom communities has been revealed. Species diversity in the area has been reduced and macrobenthos communities utterly destroyed; the young of polychaetes and of bivalves being the first to have suffered.
| Main Authors: | , |
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| Format: | Journal Contribution biblioteca |
| Language: | Russian |
| Published: |
1994
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| Subjects: | Dumping, Dredging, Ports, Environmental monitoring, Heavy metals, Aquatic communities, Benthos, Zinc, Bottom sediments, Mercury, Lead, Cadmium, Тяжелые металлы, Порты, Свинец, Драгирование, Дампинг, |
| Online Access: | http://hdl.handle.net/1834/15781 |
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