INVESTIGATION ON SEASONAL ABUNDANCE OF MNEMIOPSIS LEIDYI, PLANKTONIC COMMUNITY AND SOME OF ENVIRONMENTAL PARAMETERS IN THE SOUTHERN PART OF CASPIAN SEA AND FINDING THEIR RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS (PCA)

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NASROLLAHZADEH SARAVI HASSAN; MAKHLOUGH ASIEH; ROSHANTABARI MOZHGAN; MOKARAMI ALI

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Journal: JOURNAL OF MARINE BIOLOGY Year:2013 | Volume:4 | Issue:16 Page(s): 43-57

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Title

INVESTIGATION ON SEASONAL ABUNDANCE OF MNEMIOPSIS LEIDYI, PLANKTONIC COMMUNITY AND SOME OF ENVIRONMENTAL PARAMETERS IN THE SOUTHERN PART OF CASPIAN SEA AND FINDING THEIR RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS (PCA)

Author(s)

NASROLLAHZADEH SARAVI HASSAN | MAKHLOUGH ASIEH | ROSHANTABARI MOZHGAN | MOKARAMI ALI | Issue Writer Certificate

Keywords

ENVIRONMENTAL PARAMETERSQ2

PHYTOPLANKTONQ2

ZOOPLANKTONQ2

MNEMIOPSIS LEIDYIQ3

CASPIAN SEAQ2

IRANQ2

Abstract

The study investigated the relationship between some of biological parameters (p hytoplankton, ZOOPLANKTON and MNEMIOPSIS LEIDYI abundance) and some ENVIRONMENTAL PARAMETERS (temperature, salinity and water clearness) in the southern CASPIAN SEA during 2009 to 2010. Sampling was performed in four seasons (spring, summer, autumn and winter) and at eight transects perpendicular to the coast. PHYTOPLANKTON and ENVIRONMENTAL PARAMETERS samples were collected using Niskin. ZOOPLANKTON and MNEMIOPSIS LEIDYI samples provided by net. Total of 384 PHYTOPLANKTON and water samples and 160 ZOOPLANKTON and MNEMIOPSIS LEIDYI samples were collected at the euphotic zone from depths of 5, 10, 20, 50 and 100 m. According to results, minimum and maximum values of PHYTOPLANKTON biomass were observed in summer and winter, respectively. During spring and winter, the abundance of ZOOPLANKTON was in highest level and conversely the minimum values observed during summer and autumn with obvious increasing in M. leidyi abundance. Maximum temperature and salinity were observed in summer and autumn, respectively. Result on PCA analysis in summer showed that decreasing of salinity had positive effect on M. leidyi and ZOOPLANKTON abundance especially coppepoda and cirripedia groups. In this season, PHYTOPLANKTON biomass was affected by temperature and salinity. However, with considering PCA analysis in autumn, PHYTOPLANKTON biomass was correlated with PC1 which had a principal rule as compared to ZOOPLANKTON. In this season, M. leidyi abundance was correlated with temperature and salinity of water. M. leidyi abundance was negatively correlated with water transparency during the two periods of time. It can be due to mucus excretion of M. leidyi which may decrease transparency of the water. In this study for the first time the dynamic population of M. leidyi is used as key factor in the CASPIAN SEA ecosystem events, however the interaction of different factors such as biotic and ENVIRONMENTAL PARAMETERS may also have effect on changes of dynamic of ZOOPLANKTON abundance and its groups composition.

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APA: Copy

NASROLLAHZADEH SARAVI, HASSAN, MAKHLOUGH, ASIEH, ROSHANTABARI, MOZHGAN, & MOKARAMI, ALI. (2013). INVESTIGATION ON SEASONAL ABUNDANCE OF MNEMIOPSIS LEIDYI, PLANKTONIC COMMUNITY AND SOME OF ENVIRONMENTAL PARAMETERS IN THE SOUTHERN PART OF CASPIAN SEA AND FINDING THEIR RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS (PCA). JOURNAL OF MARINE BIOLOGY, 4(16), 43-57. SID. https://sid.ir/paper/174659/en

Vancouver: Copy

NASROLLAHZADEH SARAVI HASSAN, MAKHLOUGH ASIEH, ROSHANTABARI MOZHGAN, MOKARAMI ALI. INVESTIGATION ON SEASONAL ABUNDANCE OF MNEMIOPSIS LEIDYI, PLANKTONIC COMMUNITY AND SOME OF ENVIRONMENTAL PARAMETERS IN THE SOUTHERN PART OF CASPIAN SEA AND FINDING THEIR RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS (PCA). JOURNAL OF MARINE BIOLOGY[Internet]. 2013;4(16):43-57. Available from: https://sid.ir/paper/174659/en

IEEE: Copy

HASSAN NASROLLAHZADEH SARAVI, ASIEH MAKHLOUGH, MOZHGAN ROSHANTABARI, and ALI MOKARAMI, “INVESTIGATION ON SEASONAL ABUNDANCE OF MNEMIOPSIS LEIDYI, PLANKTONIC COMMUNITY AND SOME OF ENVIRONMENTAL PARAMETERS IN THE SOUTHERN PART OF CASPIAN SEA AND FINDING THEIR RELATIONSHIP USING PRINCIPAL COMPONENT ANALYSIS (PCA),” JOURNAL OF MARINE BIOLOGY, vol. 4, no. 16, pp. 43–57, 2013, [Online]. Available: https://sid.ir/paper/174659/en

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