• Journal title: Scientific Journal of Environmental Sciences
  • ISSN: 2322-5017 (online)
  • Publisher: Sjournals
  • Country of publisher: iran, islamic republic of
  • Platform/Host/Aggregator: Sjournals
  • Date added to EuroPub: 2017/Feb/20

Subject and more

  • LCC Subject Category: Soil Sciences, Environmental Sciences, Environmental Toxicology, Epidemiology,
  • Publisher's keywords: Chorophyll ‘a’, water nutrient, Primary productivity, Amadi-Ama Creek, Bonny Estuary, Nigeria
  • Language of fulltext: english
  • Full-text formats available: PDF


    B.B. Otene*| Department of Fisheries and Aquatic Environment,Rivers State University of Science and Technology, Port Harcourt., S.I. Iorchor| Department of Fisheries, Akperan Oshi College of Agriculture, Yandev,Gboko, Benue State.




water nutrients dynamicsand use of chlorophyll‘a’ in the determination of primary productivity of Amadi-Ama creeks wereinvestigated for 2years(January 2009-December, 2010). Water samples collected were analyzed followingthe standard limnological methods of APHA. Data were analyzed using samplestatistical method of mean and subjected to ANOVA for significant difference atp≤0.05.All the parameters investigated exhibited significant differencespatially,temporally and seasonally except nitrate. The estimation of thephytoplankton biomass by chlorophyll ‘a’ ranged from 0.0-4.50mg/l. Theproductivity of the creek measured by chlorophyll ‘a’ increased in the dryseason than the wet season and also highest in station 3.The observedchlorophyll’a’ value of the creek placed it between mesotrophic to eutrophicstatus.It was observed that chlorophyll‘a’ value increased with increase inwater nutrients especially phosphate.

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