Tidal Influence on Nutrients Status and Phytoplankton Population of Okpoka Creek, Upper Bonny Estuary, Nigeria
Joint Authors
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-31
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Earth Science , Water and Environment
Abstract EN
Okpoka Creek of the Upper Bonny Estuary in the Niger Delta is a tidal creek receiving organic anthropogenic effluents from its environs.
The study investigated the influence of tides (low and high) on the species composition, diversity, abundance, and distribution of phytoplankton.
The surface water and phytoplankton samples were collected monthly from May 2004 to April 2006 at both tides from ten stations according to standard methods.
Phytoplankton was identified microscopically.
Species diversity was calculated using standard indices.
Data analyses were done using analysis of variance, Duncan multiple range, and descriptive statistics.
Phosphate and ammonia exceeded international acceptable levels of 0.10 mg/L for natural water bodies indicating high nutrient status, organic matter, and potential pollutants.
A total of 158 species of phytoplankton were identified.
Diatoms dominated the phytoplankton (62.9%).
Diversity indices of diatoms were 1.5±0.03 (Margalef) and 0.8±0.01 (Shannon).
Pollution-indicator species such as Navicula microcephala, Nitzschia sigma, Synedra ulna (diatoms), Cladophora glomerata (green alga), Euglena acus (euglenoid), Anabeana spiroides (blue-green alga), and Ceratium furca (dinoflagellate) were recorded at either only low, high or both tides.
Concerted environmental surveillance on Upper Bonny Estuary is advocated to reduce the inflow of pollutants from the Bonny Estuary into this Creek caused by tidal influence.
American Psychological Association (APA)
Davies, O. A.& Ugwumba, O. A.. 2013. Tidal Influence on Nutrients Status and Phytoplankton Population of Okpoka Creek, Upper Bonny Estuary, Nigeria. Journal of Marine Sciences،Vol. 2013, no. 2013, pp.1-16.
https://search.emarefa.net/detail/BIM-1007142
Modern Language Association (MLA)
Davies, O. A.& Ugwumba, O. A.. Tidal Influence on Nutrients Status and Phytoplankton Population of Okpoka Creek, Upper Bonny Estuary, Nigeria. Journal of Marine Sciences No. 2013 (2013), pp.1-16.
https://search.emarefa.net/detail/BIM-1007142
American Medical Association (AMA)
Davies, O. A.& Ugwumba, O. A.. Tidal Influence on Nutrients Status and Phytoplankton Population of Okpoka Creek, Upper Bonny Estuary, Nigeria. Journal of Marine Sciences. 2013. Vol. 2013, no. 2013, pp.1-16.
https://search.emarefa.net/detail/BIM-1007142
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1007142