Biofilm diatom community structure: Influence of temporal and substratum variability

Show simple item record Patil, J.S. Anil, A.C. 2008-02-22T04:36:13Z 2008-02-22T04:36:13Z 2005
dc.identifier.citation Biofouling, Vol.21; 189-206p.
dc.description.abstract Diatoms, which are early autotrophic colonisers, are an important constituent of the biofouling community in the marine environment. The effects of substratum and temporal variations on the fouling diatom community structure in a monsooninfluenced tropical estuary were studied. Fibreglass and glass coupons were exposed every month for a period of 4 days and the diatom population sampled at 24 h intervals, over a period of 14 months. The planktonic diatom community structure differed from the biofilm community. Pennate diatoms dominated the biofilms whilst centric diatoms were dominant in the water column. Among the biofilm diatoms, species belonging to the genera Navicula, Amphora, Nitzschia, Pleurosigma and Thalassionema were dominant. On certain occasions, the influence of planktonic blooms was also seen on the biofilm community. A comparative study of biofilms formed on the two substrata revealed significant differences in density and diversity. However species composition was almost constant. In addition to substratum variations, the biofilm diatom community structure also showed significant seasonal variations, which were attributed to physico-chemical and biological changes in both the water and substratum. Temporal variations in the tychopelagic diatoms of the water were also observed to exert an influence on the biofilm diatom community. Variations in diatom communities may determine the functional ecosystem of the benthic environment.
dc.language.iso en
dc.publisher Taylor and Francis
dc.rights Copyright [2005]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
dc.subject biofilms
dc.subject substrata
dc.subject fouling organisms
dc.subject colonization
dc.subject dominant species
dc.subject temporal variations
dc.subject community composition
dc.title Biofilm diatom community structure: Influence of temporal and substratum variability
dc.type Journal Article

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