Temporal distribution of phytoplankton in the south-western Caspian Sea during 2009-2010: a comparison with previous surveys

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dc.authoridTürkoğlu, Muhammet / 0000-0003-3084-6747
dc.contributor.authorBagheri, Siamak
dc.contributor.authorMansor, Mashhor
dc.contributor.authorTürkoğlu, Muhammet
dc.contributor.authorMakaremi, Marzieh
dc.contributor.authorBabaei, Hadi
dc.date.accessioned2025-01-27T20:58:10Z
dc.date.available2025-01-27T20:58:10Z
dc.date.issued2012
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis study focuses on spatial and temporal distribution and species composition of phytoplankton in the south-western Caspian Sea between July 2009 and March 2010. Samples were collected from 11 stations along three transects: Lisar, Anzali and Sefidrood. Among 44 identified phytoplankton species, diatoms (70.2%) and cyanophytes (25.0%) were dominant. The average phytoplankton abundance was calculated as 1.085E + 05 cells l(-1). Among the phytoplankton groups, diatom density was higher (70.2%) than two out of three of total abundance in density of 1.085E + 05 cells l(-1). Cyanophytes were the second important group (25.0%) contributing to total phytoplankton. Dinoflagellates, chlorophytes and euglenoids were other contributors to total phytoplankton. Diatoms Dactyliosolen fragilissimus and Skeletonema costatum and cyanophyte Oscillatoria sp. numerically dominated in the system. There were major changes in phytoplankton composition and average phytoplankton density was higher than those documented in 1996-1997 and 2005. The average concentrations of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) and dissolved inorganic silicate were 14.5 +/- 6.32, 1.14 +/- 0.44 and 5.10 +/- 3.98 mu M, respectively, and these concentrations were strikingly high. Increases in DIN and DIP concentrations were more than twofold compared to recorded values during the last 2 decades due to the eutrophication. Fluctuations in nutrients played an important role in the variation of phytoplankton composition and abundance. Chlorophyll-a concentrations varied between 3.22 and 16.1 mu g l(-1) and there was a significant increase in chlorophyll-a (8.13 +/- 5.72 mu g l(-1)) compared to the values in 1996-1997 (1.44 +/- 1.48 mu g l(-1)), 2001 (2.62 +/- 1.48 mu g l(-1)) and 2005 (2.14 +/- 1.94 mu g l(-1)).
dc.description.sponsorshipInland Waters Aquaculture Institute; Iranian Fisheries Research Organization (IFRO)
dc.description.sponsorshipThe authors are grateful to Sam Allen and Umur Onal for improving the English of the first and latest version of the manuscript, respectively. We would like to thank the Inland Waters Aquaculture Institute and Iranian Fisheries Research Organization (IFRO) for supporting this project. The Universiti Sains Malaysia (USM) is also gratefully acknowledged. We greatly appreciate the assistance received from M. Fallahi, A.R. Mirzajani, H. Khodaparast, J. Sabkara, E. Yosefzad, M. Saiyad-Rahim, Y. Zahmatkesh, H. Mohsen-Pour, J. Khoushhal and M. Iran-Pour in this study. This research received no specific grant from any funding agency, commercial or not-for-profit sectors.
dc.identifier.doi10.1017/S0025315412000094
dc.identifier.endpage1255
dc.identifier.issn0025-3154
dc.identifier.issn1469-7769
dc.identifier.issue6
dc.identifier.scopus2-s2.0-84864231853
dc.identifier.scopusqualityQ3
dc.identifier.startpage1243
dc.identifier.urihttps://doi.org/10.1017/S0025315412000094
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26629
dc.identifier.volume92
dc.identifier.wosWOS:000308312900002
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCambridge Univ Press
dc.relation.ispartofJournal of The Marine Biological Association of The United Kingdom
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectphytoplankton
dc.subjectabundance
dc.subjectchlorophyll-a
dc.subjectnutrient
dc.subjectCaspian Sea
dc.titleTemporal distribution of phytoplankton in the south-western Caspian Sea during 2009-2010: a comparison with previous surveys
dc.typeArticle

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