title: Phytoplankton community structure in local water types at a coastal site in north-western Bay of Bengal.
abstract: A comprehensive analysis on seasonal distribution of phytoplankton community structure and their interaction with environmental variables was carried out in two local water types (type 1 < 30 m isobath and Type 2 > 30 m isobath) at a coastal site in north-western Bay of Bengal. Phytoplankton community was represented by 211 taxa (146 marine, 37 fresh, 2 brackish, 20 marine-fresh, and 6 marine-brackish-fresh) belonging to seven major groups including 45 potential bloom forming and 22 potential toxin producing species. The seasonal variability depicted enrichment of phytoplankton during pre-monsoon in both water types. Total phytoplankton abundance pattern observed with inter-annual shift during monsoon and post-monsoon period at both water types. In both water types, diatom predominance was observed in terms of species richness and abundance comprising of centric (82 sp.) and pennate (58 sp.) forms. Pennate diatoms, Thalassiothrix longissima and Skeletonema costatum preponderated in both the water types. The diatom abundance was higher in type 1 in comparison to type 2. In general, SiO4 found to fuel growth of the dominant phytoplankton group, diatom in both the water types despite comparative lower concentration of other macronutrients in type 2.
authors.affiliation: Indian National Centre for Ocean Information Services (INCOIS), "Ocean Valley", Pragathi Nagar (BO), Nizapmpet (SO), Hyderabad, 500090, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Baliarsingh
authors.affiliation: Department of Marine Sciences, Berhampur University, Brahmapur, Odisha, 760007, India.|Wetland Research and Training Centre, Chilika Development Authority, Barkul, Balugaon, Odisha, 752030, India.
authors.forename: Suchismita
authors.initials: S
authors.lastname: Srichandan
authors.affiliation: Indian National Centre for Ocean Information Services (INCOIS), "Ocean Valley", Pragathi Nagar (BO), Nizapmpet (SO), Hyderabad, 500090, India. aneesh@incois.gov.in.
authors.forename: Aneesh A
authors.initials: AA
authors.lastname: Lotliker
authors.affiliation: Department of Marine Sciences, Berhampur University, Brahmapur, Odisha, 760007, India.
authors.forename: K C
authors.initials: KC
authors.lastname: Sahu
authors.affiliation: Indian National Centre for Ocean Information Services (INCOIS), "Ocean Valley", Pragathi Nagar (BO), Nizapmpet (SO), Hyderabad, 500090, India.
authors.forename: T
authors.initials: T
authors.lastname: Srinivasa Kumar
mesh_terms: D061006:Bays / Q000737:chemistry*; D044822:Biodiversity; D017377:Diatoms / Q000145:classification / Q000254:growth & development; D004784:Environmental Monitoring / Q000379:methods*; D005618:Fresh Water / Q000737:chemistry*; D019156:Indian Ocean; D010839:Phytoplankton / Q000145:classification / Q000254:growth & development*; D012621:Seasons; D012623:Seawater / Q000737:chemistry*; D013045:Species Specificity; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D014874:Water Pollutants, Chemical
keywords: Bay of Bengal; Chlorophyll-a; Diatom; Nutrient; Phytoplankton; Water type