Greener Journal of Biological Sciences

Greener Journal of  Biological Sciences Vol. 6 (4), pp. 068-078, August 2016.

 © 2015 Authors

Research Paper

Manuscript Number: 061016103

(DOI: http://doi.org/10.15580/GJBS.2016.4.061016103)

 

A Checklist of Phytoplanktonic Algae of Nyamuhinga Stream in Lake Kivu Basin (Eastern DR Congo)

 

^*1Bisimwa Mubwebwe Arthur, ²Ombeni Shamba Espoir,

²Munundu Mangaza Aline, ²Irenge Bayubasire Emmanuel,

³Cishugi Balagizi Janvier and ²Cubaka Kabagale Alfred

 

¹Limnology Laboratory, Department of Biology, Centre de Recherche en Sciences Naturelles de Lwiro (CRSN-Lwiro), D.S. Bukavu/DR Congo.

²Vegetable Physiology and Apply Microbiology Laboratory, Faculty of Sciences and Applied Sciences, Université Officielle de Bukavu (UOB), PO Box. 570 Bukavu, DR Congo.

³Biology Department, Section of Exact Science, Institut Supérieur Pédagogique de Kinyatsi (ISP-Kinyatsi), .PO Box.

Abstract

The phytoplankton diversity of Nyamuhinga stream was investigated at the first time from January to December 2014. It recorded a total of 135 species, belonging to four major divisions namely: Bacillariophyta (49.6%), Chlorophyta (21.5%), Cyanophyta (20.7%) and Pyrrophyta (8.2%). Comparatively, a higher number of species was recorded in the dry than in the wet season. Sixteen species of Bacillariophyta were reported during the all period of the sampling dominated quantitatively by Achnanthes lanceolata, Cyclotella kützingiana, Cyclotella meneghiniana, Cyclotella stelligera, Cymbella grossestriata, Diatoma elongatum, Diatoma vulgare, Fragilaria crotonensis, Gomphonema brunii, Gomphocymbella brunii, Navicula cocconeiformis, Nitzschia acicularis and Nitzschia pelagica. Seven species of Chlorophyta and five of Pyrrophyta were reported, but respectively dominated quantitatively by Ankistrodesmus falcatus, Cladophora rupestris, Cosmarium austral, Staurastrum dickiei, Euglena granulate and Peridinum inconspicuum. The paucity of phytoplankton composition in Nyamuhanga stream could be partly due to the poor light penetration into highly turbid water mostly in wet season.  

 

Keywords: Phytoplankton species, Community structure, Nyamuhinga stream, Season, Lake Kivu basin.

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