Survey of diversity, distribution, abundance and biomass of macrobenthic fauna in the southern Caspian Sea
This project were investigated seasonally from march 2008 up to one year, in southern Caspian Sea iranian coast /Sampling was carried out at 8 stations of between 5 and 100 m depth and taken in triple with a 0/1m² van Veen grab/Total twenty four species and one family and one order were identified, presenting low dominance and frequency/ polychaeties 56%,oligochaetes 39% bivalves <1% amphipodes1% Cumacea and diptera and cirrepedia %1 of whole macrobenthos compositions/ Polychaetes and oligochaeta dominated, representing 95% of the whole fauna/Average of species were 11/8 species per grab/max 21 species / grab were found in Tonkabon stations at 100 meter depths and minmum 4 species/grab in 20 m in Bandar anzali /Maxmiun density were 4783 n/m^2 in spring and minmum 3177 n/m^2 in winter/Highest density were recorded in Amirabad stations and lowest in nooshar/ Maximum density showed in east, mimun in middle area of sea The biomass of benthos adventages in west/Average biomass of whole area were 6/932 gr/m^2/Mean total organic matter were 3/11±1/1 and silt- clay 62/92±6/12precent and Mean dissolve oxygen and salinity were 8/3±0/15 mg/l and salinity 12/2 ±0/4 ppm and water tempreture were 14/9±0/18ْC/ Mean grain size, fine sand, very fine sand, silt and clay contents were among the main factors related to the patterns of macrofaunal distribution, density and diversity and dominance of trophic groups.
| Main Authors: | , , , , , , , , , , |
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| Format: | monograph biblioteca |
| Language: | Persian |
| Published: |
Iranian Fisheries Science Research Institute
2012
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| Subjects: | Ecology, Iran, Caspian Sea, Tonkabon, Bandar Anzali, Macrobenthos, Disturbiotion, Diversity, Productions, Survey, Abundance, Biomass, Macrobenthic Fauna, Sampling, Species, Polychaeties, Oligochaetes, Bivalves, Dissolved oxygen, Salinity, Temperature, |
| Online Access: | http://hdl.handle.net/1834/39722 |
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