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Makhlough, Asieh, Nasrollahzadeh Saravi, Hassan, Eslami, F, Keyhansani, A.R. (1397). Scale characteristics of the bloom event: A case study in the Iranian coastal waters of the Southern Caspian Sea. سامانه مدیریت نشریات علمی, 18(1), 124-139. doi: 10.22092/ijfs.2018.117600
Asieh Makhlough; Hassan Nasrollahzadeh Saravi; F Eslami; A.R Keyhansani. "Scale characteristics of the bloom event: A case study in the Iranian coastal waters of the Southern Caspian Sea". سامانه مدیریت نشریات علمی, 18, 1, 1397, 124-139. doi: 10.22092/ijfs.2018.117600
Makhlough, Asieh, Nasrollahzadeh Saravi, Hassan, Eslami, F, Keyhansani, A.R. (1397). 'Scale characteristics of the bloom event: A case study in the Iranian coastal waters of the Southern Caspian Sea', سامانه مدیریت نشریات علمی, 18(1), pp. 124-139. doi: 10.22092/ijfs.2018.117600
Makhlough, Asieh, Nasrollahzadeh Saravi, Hassan, Eslami, F, Keyhansani, A.R. Scale characteristics of the bloom event: A case study in the Iranian coastal waters of the Southern Caspian Sea. سامانه مدیریت نشریات علمی, 1397; 18(1): 124-139. doi: 10.22092/ijfs.2018.117600

Scale characteristics of the bloom event: A case study in the Iranian coastal waters of the Southern Caspian Sea

Iranian Journal of Fisheries Sciences
مقاله 10، دوره 18، شماره 1، فروردین 2019، صفحه 124-139    اصل مقاله (589.21 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22092/ijfs.2018.117600
نویسندگان
Asieh Makhlough1؛ Hassan Nasrollahzadeh Saravi* 1؛ F Eslami2؛ A.R Keyhansani2
1Ecology Deprt.
2Caspian Sea Ecology Research Center (CSERC), Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran
چکیده
Nutrient enrichment in water and sediments due to excessive anthropogenic activities in recent years has caused excessive algal growth in the Caspian Sea. The current study was conducted to survey the abundance of phytoplankton, its dominant species and chlorophyll-a [Chl-a] concentration in algal bloom aspect in the Iranian coastal water of Caspian Sea during four seasons from 2013 to 2014. The minimum and maximum phytoplankton abundance was recorded 73±31 and 505±55 million cells/m3 in summer and winter, respectively. The median concentration of Chl-a was increased to 5.81 mg/m3 in autumn, as compared to annual median value (2.43 mg/m3). The result indicated that bloom started in autumn and it continued falling with a low rate during winter (Chl-a :2.59 mg/m3). The three species Stephanodiscus socialis, Binuclearia lauterbornii and Thalassionema nitzschioides classified in medium bloom class (100-1000 cells/mL) in spring, summer and autumn seasons, respectively. While in winter Pseudonitzschia seriata and Dactyliosolen fragilissima was classified in medium bloom class with high relative frequency. Finally, the bloom at the regions with more than 100 cells/m3 of total phytoplankton abundance and dominant species was overlapped with the bloom regions based on Chl-a concentration. 
کلیدواژه‌ها
Phytoplankton؛ Bloom؛ Scale characteristics؛ Caspian Sea؛ Iran
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