{"refrec":{"BRefID":435555,"RR":"<b>El-Sherbiny, M.M.; Al-Hasawi, Z.M.; EL-Hefnawy, M.E.</b> (2025). Microphytoplankton community structure in the Gulf of Aqaba and northern Red Sea. <i>Egypt. J. Aquatic Res. 51(4)</i>: 505-516. <a href=\"https://dx.doi.org/10.1016/j.ejar.2025.09.001\" target=\"_blank\">https://dx.doi.org/10.1016/j.ejar.2025.09.001</a>","BEntID":433385,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Egypt. J. Aquatic Res. 51(4)</i>: 505-516. <a href=\"https://dx.doi.org/10.1016/j.ejar.2025.09.001\" target=\"_blank\">https://dx.doi.org/10.1016/j.ejar.2025.09.001</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"El-Sherbiny, M.M.; Al-Hasawi, Z.M.; EL-Hefnawy, M.E.","OrigTitleTranslFlag":0,"Authorstringtrunc":"El-Sherbiny, M.M.; Al-Hasawi, Z.M.; EL-Hefnawy, M.E.","Englishabstract":"Phytoplankton assemblages and species richness were examined with respect to physico-chemical parameters in Gulf of Aqaba (GoA) and northern Red Sea (NRS) during early spring (March 2018). Three stations were selected for the current study in each of the GoA and NRS. Water temperature was significantly lower (p&nbsp;&lt;&nbsp;0.05) and salinity higher (p&nbsp;&lt;&nbsp;0.01) in the GoA than in the NRS. Ammonia varied spatially, whereas nitrate, nitrite, and silicate showed vertical gradients. In contrast, phosphate concentration remained uniform. Chlorophyll-<i>a</i> was stable in the NRS but declined from south to north in the GoA. Phytoplankton density in GoA increased from station 1 to 3, whereas NRS densities exhibited minimal change. Chlorophyll-<i>a</i> and phytoplankton density were significantly correlated with temperature (r&nbsp;=&nbsp;0.57, p&nbsp;&lt;&nbsp;0.01), while community structure varied spatially as indicated by MDS anlysis. Diatoms dominated some stations, whereas dinoflagellates were numerically dominant in others. Among the 179 phytoplankton species recorded, dinoflagellates accounted for 100 (of which 27 were heterotrophic), diatoms 78, and cyanophytes one. Diatoms (including <i>Chaetoceros</i> spp. and <i>Rhizosolenia</i> spp.) and dinoflagellates (such as <i>Tripos</i> spp. and <i>Protoperidinium</i> spp.) exhibited greater diversity. Three diatom species and seven dinoflagellate species known to cause severe algal blooms worldwide were also recorded from the region.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Microphytoplankton community structure in the Gulf of Aqaba and northern Red Sea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-24 01:33:45.690819","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Microphytoplankton; Diversity; Biomass nutrients; Gulf of Aqaba; Northern Red Sea","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-12-17","DateCreate":"2025-10-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.ejar.2025.09.001"},"refs":null,"anarec":{"AnaID":435555,"PubliDate":2025,"Pagination":"505-516","XtraPublOfAnaID":null,"ISBN":null,"Volume":"51","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":226053,"SerRR":"Egyptian Journal of Aquatic Research. 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