The study in the southeastern part of the Caspian Sea on the shores of the Caspian and valuable in the region where the desalination devices in order to transfer Caspian Sea water to central plateau was considered to be carried out. Sampling monthly and 8 stations including Station 1, Station 2, 3 and 4 stations at a depth of 5 meters, Stations 5 and 6 at a depth of 10 meters and stations 7 and 8 was conducted at a depth of 15 meters. A total of 157 species of phytoplankton were detected from 8 phylum namely Bacillariophyta with 75 species, Cyanophyta (23 species), Pyrrophyta (26 species), Chlorophyta (19 species), Euglenophyta (10 species), and the Chrysophyta, and Haptophyta each respectively with 1, 1 and 2 species were identified. So that Bacillariophyta the most frequent species accounted for 48%. The density and biomass of phytoplankton in different stations showed the highest density of stations 4 with an average of 12.2×106 ± 1.5×106 N/m3 cells and biomass belong to one station with an average of 4.3 ± 4.34 mg/m3, respectively. an‎d significant differences were found in terms of biomass at several stations (p<0.05) and there is not significant different based on density (p>0.05). The density and biomass of phytoplankton in different months showed that the highest density and biomass in March with the average cell 20×106±1.2×106 N/m3 and 52.93±2.8 mg/m3 and the lowest density and biomass of hit the post with an average number 1.5×106±0.9×106 N/m3 and 3.7±3.1 mg/m3, respectively. an‎d significant differences were found in terms of density and biomass at various month (p<0.05). The results showed that zooplankton species were identified that phyla of Haloplankton 8, Copepoda two species Acartia tonsa and Ectinosoma continnum, two species of Cladocera, Podon polyphemoides, Bosmina longirostris, two species of protozoa, Tentinopsis tubulosa and Foraminifora sp. , the Rotatoria including Asplanchna priodonta and Keratalla tropicusa species and groups of Merovplankton of Bivalvia, Bivalvia larvae and Cirripedia includes Balaus nauplius and were Balanus cypris. A. tonsa species with about 72%, accounted for the highest frequency than other species. The amount of density and biomass of zooplankton in the months of April to March showed a decreasing trend is the density and biomass. The results showed that the highest density and biomass of September respectively 2710±402.2 N/m3 and 20.1±2.8 mg/m3 and the lowest density and biomass of March thus, with an average of 301.4±227.1 N/m3 and 2.2±1.6 mg/m3, and significant differences were found in terms of density and biomass in different months (p<0.05) . Mean changes in density and biomass jelly fish in groups and different months showed the greatest amount of compression in the months of November and December and the lowest was recorded in December. The results show that a positive correlation between the density and biomass in spring and summer jelly fish there but in October biomass and density, which can depend on the size of the comb jelly. No significant differences were observed in terms of density and biomass in different months (p>0.05). Of benthic invertebrate total of 24 species were identified 4 classes of Polychaeta category 4 species, Bivalvia of one species, category Crustacea in the category identified 18 species and a Olygochaeta were recorded. Results showed that Streblospio gynobranschiata highest frequency with a mean (standard error ±) 5/58 ± 1247 N/m2, respectively. The results showed that 75% of crustacean species diversity and category accounted for 17% poly kits and other ranks each with 4% of species richness formed. Species of S. gynobranschiata, Hypania, Hypaniola kowaleweskii and Hediste diverticular made kits of seeds and Cerastoderma glaucum from the category Bivalvia and other species of the genus are crustacean. The lowest in May, with an average of 113 ± 209 N/m2 and the highest in January with an average of 94 ± 890 N/m2 was recorded. No significant difference was found between the density of benthic macro-invertebrates at different stations (P>0.05). The results showed that most of the white fish (Rutilus kutum) catch accounted for the carp and mullet. The amount of white fish catch Fishing blades showed the lowest catches in January and February and the highest was caught in April.In vitro evaluation of white fish with other bio-based groups, multivariate analysis revealed that the four classes based on the similarity Pearson coefficient was formed in different months Zooplankton- groups Mnemiopsis in the first class, first class -phytoplnkton in second class, third class white fish in third class and fourth class of the third class were Benthos. In vitro evaluation of catching mullet with other bio-based groups, multivariate analysis revealed that the similarity coefficient of Pearson in different months have 4 sessions. The highest correlation was found between mullet with Benthos. The amount of fishing Carp Fishing blades showed the lowest and the highest catch was caught in an avalanche that no catch was in November.In vitro evaluation of carp fishing with other bio-based groups, multivariate analysis revealed that the similarity coefficient of Pearson in different months of the same white fish that it would be migration because of the fish and a source of Ecology (Ecological Niche) is common.

فيتوپلانكتون , زئوپلانكتون , شانه دار , بي مهرگان كفزي , ماهيان استخواني , درياي خزر , مازندران - گهرباران

تهران موسسه تحقيقات علوم شيلاتي كشور

مصور (رنگي)، جدول، نمودار (بخشي رنگي)

موسسه تحقيقات علوم شيلاتي كشور 51798

ص. ع. به انگليسي: Mohammad Ali Afraei Bandpei. Study of relationship between biotic parameters and abundance and catch of different fish species (Kutum, Mugil, Carp) in the Southeastern of the Caspian Sea (Mazandaran - Goharbarn) , [همكاران طرح] فرخ پرافكنده، محمد رامين، ابوالقاسم روحي، حسن فضلي، حسن نصراله زاده ساروي، عبداله هاشميان، فرشته اسلامي، نوربخش خداپرست، فرامرز لالوئي، مهدي نادري جلودار، فاطمه السادات تهامي ... , كتابنامه: ص. 73- 77

ماهي‌ها -- درياي خزر , ماهي سفيد , كپور , كفال , پلانكتون‌هاي گياهي -- درياي خزر , بن‌زيان , شانه‌داران -- درياي خزر , ماهي‌ها -- درياي خزر-- تغذيه

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