Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea
The changes in density and biomass of macrobenthos were seasonally investigated from winter 2005 till fall 2006 in southern Caspian Sea. Samples were taken with a 225cm2 Van Veen grab from depths of 7 and 20 meters along two transects: Line 8 area (western part) and Radio Darya area (eastern p...
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| Format: | Article |
| Language: | fas |
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Iranian Fisheries Research Organization
2011-01-01
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| Series: | Majallah-i ̒Ilmī-i Shīlāt-i Īrān |
| Subjects: | |
| Online Access: | http://isfj.areo.ir/article_109969_en.html |
| _version_ | 1818583718097321984 |
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| author | M. Tavoli email ; M. Islami; S.M. Mahdavi |
| author_facet | M. Tavoli email ; M. Islami; S.M. Mahdavi |
| author_sort | M. Tavoli email ; M. Islami; S.M. Mahdavi |
| collection | DOAJ |
| description | The changes in density and biomass of macrobenthos were seasonally investigated from
winter 2005 till fall 2006 in southern Caspian Sea. Samples were taken with a 225cm2 Van
Veen grab from depths of 7 and 20 meters along two transects: Line 8 area (western part) and
Radio Darya area (eastern part). Totally, 5 classes of macrobenthos were identified of which
the most abundant populations were Polychaeta 68.7%, Oligochaeta 14.6%, Bivalvia 8.5%,
Crustacea 8.2% and Gastropoda 0.08%. The maximum density (4251.8 1419 (ME SE)
ind/m2) of macrobenthos was observed during summer in the depth of 20m of Radio Darya
area, while the minimum density (725.9 64.5 (ME SE) ind/m2) was observed during spring
in the depth of 7m in the same area. Between the two studied depths, the mean annual density
in 7m depth (2266.7 350.3 (ME SE)ind/m2), was higher from 20m depth (1977.8 290.1
(ME SE)ind/m2). The maximum biomass (475 243.8 (ME SE)g/m2), of macrobenthos
was observed during autumn in the depth of 20 meter of Radio Darya area, while the
minimum biomass (0.3 0.1 (ME SE)g/m2), was observed during winter in the depth of 7m
in the same area. Between the two studied depths, the mean annual biomass in 20m depth
(184.8 24.6 (ME SE)g/m2), was higher from 7m depth (73.7 24.6 (ME SE)g/m2).
Generally speaking, the eastern part of Chalus coast had more density and biomass compared
with the western part. |
| first_indexed | 2024-12-16T08:09:44Z |
| format | Article |
| id | doaj.art-3cecd44c3d3f4974a368ad40066b32cc |
| institution | Directory Open Access Journal |
| issn | 1026-1354 2322-5998 |
| language | fas |
| last_indexed | 2024-12-16T08:09:44Z |
| publishDate | 2011-01-01 |
| publisher | Iranian Fisheries Research Organization |
| record_format | Article |
| series | Majallah-i ̒Ilmī-i Shīlāt-i Īrān |
| spelling | doaj.art-3cecd44c3d3f4974a368ad40066b32cc2022-12-21T22:38:22ZfasIranian Fisheries Research OrganizationMajallah-i ̒Ilmī-i Shīlāt-i Īrān1026-13542322-59982011-01-01194147152Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian SeaM. Tavoli email ; M. Islami; S.M. MahdaviThe changes in density and biomass of macrobenthos were seasonally investigated from winter 2005 till fall 2006 in southern Caspian Sea. Samples were taken with a 225cm2 Van Veen grab from depths of 7 and 20 meters along two transects: Line 8 area (western part) and Radio Darya area (eastern part). Totally, 5 classes of macrobenthos were identified of which the most abundant populations were Polychaeta 68.7%, Oligochaeta 14.6%, Bivalvia 8.5%, Crustacea 8.2% and Gastropoda 0.08%. The maximum density (4251.8 1419 (ME SE) ind/m2) of macrobenthos was observed during summer in the depth of 20m of Radio Darya area, while the minimum density (725.9 64.5 (ME SE) ind/m2) was observed during spring in the depth of 7m in the same area. Between the two studied depths, the mean annual density in 7m depth (2266.7 350.3 (ME SE)ind/m2), was higher from 20m depth (1977.8 290.1 (ME SE)ind/m2). The maximum biomass (475 243.8 (ME SE)g/m2), of macrobenthos was observed during autumn in the depth of 20 meter of Radio Darya area, while the minimum biomass (0.3 0.1 (ME SE)g/m2), was observed during winter in the depth of 7m in the same area. Between the two studied depths, the mean annual biomass in 20m depth (184.8 24.6 (ME SE)g/m2), was higher from 7m depth (73.7 24.6 (ME SE)g/m2). Generally speaking, the eastern part of Chalus coast had more density and biomass compared with the western part.http://isfj.areo.ir/article_109969_en.htmlbiomass; Macrobenthos; Ecology; Caspian Sea |
| spellingShingle | M. Tavoli email ; M. Islami; S.M. Mahdavi Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea Majallah-i ̒Ilmī-i Shīlāt-i Īrān biomass; Macrobenthos; Ecology; Caspian Sea |
| title | Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea |
| title_full | Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea |
| title_fullStr | Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea |
| title_full_unstemmed | Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea |
| title_short | Spatial and temporal variability of macrobenthic communities in Chalus Shore of the Caspian Sea |
| title_sort | spatial and temporal variability of macrobenthic communities in chalus shore of the caspian sea |
| topic | biomass; Macrobenthos; Ecology; Caspian Sea |
| url | http://isfj.areo.ir/article_109969_en.html |
| work_keys_str_mv | AT mtavoliemailmislamismmahdavi spatialandtemporalvariabilityofmacrobenthiccommunitiesinchalusshoreofthecaspiansea |