Study on daily phytoplankton net primary production and correlation with its components in coastal zone of the southern Caspian Sea

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NASROLLAHZADEH SARAVI H.; MAKHLOUGH A.; VAHEDI F.; ROOHI A.; NOORI P.

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Journal: Iranian Scientific Fisheries Journal Year:2020 | Volume:29 | Issue:5 Page(s): 161-174

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Title

Study on daily phytoplankton net primary production and correlation with its components in coastal zone of the southern Caspian Sea

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Keywords

Environmental parametersQ1

Net primary productionQ1

Iranian CoastsQ3

Caspian SeaQ1

Abstract

Primary production is an important component in the biological cycle in terms of carbon storage and a key indicator for evaluating of ecosystem function. In this study, Net primary production and its components were investigated in the coastal zone of Iranian basin of Caspian Sea during four seasons from 2018 to 2019. In addition, the effective environmental factors on spatial-temporal distributions of Net primary production have been studied. As a results, mean (± SD) of Chl-a, euphotic depth (Zeu), active photosynthetic radiation (PAR), maximum primary production per unit of Chl-a (P B opt) and daily Net primary production (DNPP) were obtained 2. 54± 3. 23 mg/m 3, 28. 9± 6. 8m, 40. 42± 16. 84 2 Einstein/m. day, 5. 05± 1. 11 mgC/mgChl-a. h and 2. 04± 0. 73 gC/m 2. day. The value of DNPP in the central region was more than the western and eastern regions. It probably is due to effects of wind and waves turbulent on re-suspension of sediment and decrease of light penetration in water column in the western and eastern regions. The seasonal variation of Net primary production was in order: autumn>summer>spring> winter. The significant higher NPP in autumn than other seasons (p< 0. 05, ANOVA-test), primarily caused by Chl-a and P B optic. Based on regression and PCA tests, temporal-spatial changes of DNPP has been significantly affected by the two variables of Chl-a and PBoptic. In general, the classification of trophic state based on Net primary production showed that 52% of the data had trophic states in the range of oligo-mesotroph and mesotroph (49%) to eutroph (3%) and 48% of the data were in the oligotroph group (mainly in the eastern region).

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APA: Copy

NASROLLAHZADEH SARAVI, H., MAKHLOUGH, A., VAHEDI, F., ROOHI, A., & NOORI, P.. (2020). Study on daily phytoplankton net primary production and correlation with its components in coastal zone of the southern Caspian Sea. IRANIAN SCIENTIFIC FISHERIES JOURNAL, 29(5 ), 161-174. SID. https://sid.ir/paper/374872/en

Vancouver: Copy

NASROLLAHZADEH SARAVI H., MAKHLOUGH A., VAHEDI F., ROOHI A., NOORI P.. Study on daily phytoplankton net primary production and correlation with its components in coastal zone of the southern Caspian Sea. IRANIAN SCIENTIFIC FISHERIES JOURNAL[Internet]. 2020;29(5 ):161-174. Available from: https://sid.ir/paper/374872/en

IEEE: Copy

H. NASROLLAHZADEH SARAVI, A. MAKHLOUGH, F. VAHEDI, A. ROOHI, and P. NOORI, “Study on daily phytoplankton net primary production and correlation with its components in coastal zone of the southern Caspian Sea,” IRANIAN SCIENTIFIC FISHERIES JOURNAL, vol. 29, no. 5 , pp. 161–174, 2020, [Online]. Available: https://sid.ir/paper/374872/en

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