| GHASEMI Amir Faraz,TAHERI Mehrshad,FOSHTOMI Maryam Yazdani,NORANIAN Majid,MIRA Seyed Sahab,JAM Armin. 2016. Gorgan Bay:a microcosm for study on macrobenthos species-environment relationships in the southeastern Caspian Sea. Acta Oceanologica Sinica, 35(4):82－88 |
| Gorgan Bay:a microcosm for study on macrobenthos species-environment relationships in the southeastern Caspian Sea |
| Gorgan Bay: a microcosm for study on macrobenthos species-environment relationships in the southeastern Caspian Sea |
| Received:May 07, 2014 Revised:November 05, 2014 |
| DOI：10.1007/s13131-015-0728-2 |
| Key words:salinity macrobenthos species-environment relationship Gorgan Bay Caspian Sea |
| 中文关键词: salinity macrobenthos species-environment relationship Gorgan Bay Caspian Sea |
| 基金项目: |
| Author Name | Affiliation | E-mail | | GHASEMI Amir Faraz | Iranian National Institute for Oceanography and Atmospheric Science(INIOAS), Tehran 1411813389, Iran | faraz_ghasemi@yahoo.com | | TAHERI Mehrshad | Iranian National Institute for Oceanography and Atmospheric Science(INIOAS), Tehran 1411813389, Iran | | | FOSHTOMI Maryam Yazdani | Iranian National Institute for Oceanography and Atmospheric Science(INIOAS), Tehran 1411813389, Iran | | | NORANIAN Majid | Iranian National Institute for Oceanography and Atmospheric Science(INIOAS), Tehran 1411813389, Iran | | | MIRA Seyed Sahab | Department of the Environment Golestan Province, Gorgan 4917145185, Iran | | | JAM Armin | Iranian National Institute for Oceanography and Atmospheric Science(INIOAS), Tehran 1411813389, Iran | |
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| Abstract: |
| The relationship between spatial patterns of macrobenthos community characteristics and environmental conditions(salinity, temperature, dissolved oxygen, organic matter content, sand, silt and clay) was investigated throughout the Gorgan Bay in June 2010. Principal components analysis(PCA) based on environmental data separated eastern and western stations. The maximum(4500 ind./m2) and minimum(411 ind./m2) densities were observed at Stas 1 and 6, respectively. Polychaeta was the major group and Streblospio gynobranchiata was dominant species in the bay. According to Distance Based Linear Models results, macrofaunal total density was correlated with silt percentage and salinity and these two factors explaining 64% of the variability while macrofaunal community structure just correlated with salinity(22% total variation). In general, western part of the bay showed the highest number of species and biodiversity while, the highest density was found at Sta. 1 and in the middle part of the bay. Furthermore, relationship between diversity indices and macrobenthic species with measured factors is also discussed. Our results confirm the effect of salinity as an important factor on distribution of macrobenthic fauna in south Caspian brackish waters. |
| 中文摘要: |
| The relationship between spatial patterns of macrobenthos community characteristics and environmental conditions(salinity, temperature, dissolved oxygen, organic matter content, sand, silt and clay) was investigated throughout the Gorgan Bay in June 2010. Principal components analysis(PCA) based on environmental data separated eastern and western stations. The maximum(4500 ind./m2) and minimum(411 ind./m2) densities were observed at Stas 1 and 6, respectively. Polychaeta was the major group and Streblospio gynobranchiata was dominant species in the bay. According to Distance Based Linear Models results, macrofaunal total density was correlated with silt percentage and salinity and these two factors explaining 64% of the variability while macrofaunal community structure just correlated with salinity(22% total variation). In general, western part of the bay showed the highest number of species and biodiversity while, the highest density was found at Sta. 1 and in the middle part of the bay. Furthermore, relationship between diversity indices and macrobenthic species with measured factors is also discussed. Our results confirm the effect of salinity as an important factor on distribution of macrobenthic fauna in south Caspian brackish waters. |
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