Published 4 issues per year
ISSN Print: 1521-9429
ISSN Online: 1940-4328
Indexed in
A study of the composition and seasonal variation of the epilithic diatoms of Lake Ladik (Samsun, Turkey)
ABSTRACT
The composition and seasonal variations of the epilithic diatoms of Lake Ladik were studied using samples collected from one station between June 2000 and May 2001. Fifty-one taxa were identified belonging to the Bacillariophyta in the epilithon. Aulacoseria distans (Ehr.) Simonsen, Cymbella affinis Kütz., C. prostrata (Berkeley) Cleve, Navicula cryptocephala Kütz, N. halophila, (Grun.) Cleve, N. veneta Kütz. and Surirella linearis W. Smith have become common organisms. Cluster analysis was applied to the epilithic algae community. The seasonal variations of the samples were classified according to their similarity levels. Samples were collected and species richness and diversity (Shannon-Wiener, H) were measured monthly. The results of the analysis supported the results of the counting method. Temperature and light climate that affect the population density were found to be an important factor in explaining the seasonal variation observed in Lake Ladik.