African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Nutrient, benthic algae relationships in the Sinop Karagol-Aksaz Marsh, Turkey

Ridvan Erdal Sivaci
Department of Biology, Faculty of Adıyaman Art and Science, Adıyaman University, Adıyaman, Turkey.
Email: [email protected], [email protected]

  •  Accepted: 03 April 2013
  •  Published: 11 April 2013


Investigation of nutrient and composition of benthic algae from chosen random sampling station on Karagöl-Aksaz Marsh were researched between November 2005 and November 2006. In addition, some physical and chemical parameters (soluble reactive phosphorus, total phosphorus, NH4, NO3, Cl, chlorophyll-a (Chl-a), carotenoid, pH, O2) were measured. Benthic algae diversity was calculated by using the Shannon-Weaver (H') and evenness (J) index. (H') indices varied from 1.03 to 1.48, and (J) from 0.42 to 0.67. Cluster analysis produced the three major groups, A-B swamp-wet and C swamp-dry, and occurs at the highest level of similarity. The analyses were recognized at the 0.4 dissimilarity level. A total of 55 benthic algae taxa were identified in Kargöl-Aksaz Marsh lake. Although the species of genus Gomphosphaeria spp., Dictyosphaeriumspp., Navicula spp., and Gomphonema spp. constituted the main composition of the benthic flora, the species belonging to genus Sellaphora spp., Frustulia spp., Pinnularia spp. and Stauroneis spp. were found to be less numerous. The flora as a whole increased in March, April and May (swamp-wet) and decreased in July and August (swamp-dry).


Key words: Marsh, benthic algae, cluster, diversity, nutrient.