D. Nwankwo, T. I. Owoseni, D. A. Usilo, I. Obinyan, A. Uche
{"title":"The Hydrochemistry and Plankton Dynamics of a Closed Eutrophic Tropical Lagoon","authors":"D. Nwankwo, T. I. Owoseni, D. A. Usilo, I. Obinyan, A. Uche","doi":"10.4314/DAI.V20I3-4.48143","DOIUrl":null,"url":null,"abstract":"The hydrochemistry and plankton dynamics of the Kuramo lagoon was investigated between November 2000 andAugust 2001. Whereas the lagoon remains low brackish (S°/oo 7.8) all through thesampling period, the dissolved oxygen (DO) and biochemical oxygen demand (BOD5) values ( 21mgl-1) indicated stress. Although nutrient levels at the lagoon were high (NO3- N > 1.58 mgl-1; PO4-P 449.9 mgl-1), heavy metal values were low (Fe < 1.91 mgl-1, Cu < 0.32 mgl-1, Pb Trace). The occurrence ofNitzschia palea, Cyclotella meneghiniana, Gomphonema parvulum, Pinnularia pyrum, P. gibba (diatoms), Euglena viridis,Lepocinclis texta (euglenoids), Microcystis aeruginosa, M. flos-aquae (cyanobacteria), Brachionus","PeriodicalId":50577,"journal":{"name":"Discovery and Innovation","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2009-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Discovery and Innovation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/DAI.V20I3-4.48143","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The hydrochemistry and plankton dynamics of the Kuramo lagoon was investigated between November 2000 andAugust 2001. Whereas the lagoon remains low brackish (S°/oo 7.8) all through thesampling period, the dissolved oxygen (DO) and biochemical oxygen demand (BOD5) values ( 21mgl-1) indicated stress. Although nutrient levels at the lagoon were high (NO3- N > 1.58 mgl-1; PO4-P 449.9 mgl-1), heavy metal values were low (Fe < 1.91 mgl-1, Cu < 0.32 mgl-1, Pb Trace). The occurrence ofNitzschia palea, Cyclotella meneghiniana, Gomphonema parvulum, Pinnularia pyrum, P. gibba (diatoms), Euglena viridis,Lepocinclis texta (euglenoids), Microcystis aeruginosa, M. flos-aquae (cyanobacteria), Brachionus
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