Effects of organic pollution on biological communities of marine biofilm on hard substrata

Environmental Pollution
Carlos Sanz-LázaroIoannis Karakassis

Abstract

We examined the effect of organic enrichment on diatom and bacterial assemblages of marine epilithic biofilms on two locations in the Mediterranean, one situated in Spain and the other in Greece. Total organic carbon, total organic nitrogen, stable isotopes (δ(13)C and δ(15)N) and chlorophyll a indicated significant incorporation of organic wastes, increased primary production and trophic niche modifications on the biofilms close to the organic enrichment source. In Spain, where the organic load was higher than in Greece, diatom and, to some extent, bacterial assemblages varied following the organic enrichment gradient. The taxonomic richness of diatom and bacterial communities was not influenced by organic enrichment. Classical community parameters showed consistent patterns to organic pollution in both locations, whereas community assemblages were only influenced when organic pollution was greatest. The successional patterns of these communities were similar to other epilithic communities. The modification of community assemblages induced by organic pollution may affect ecological functions.

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Citations

May 14, 2016·Environmental Pollution·Haiying LuLinzhang Yang
Jun 27, 2017·Journal of Environmental Management·Carlos Sanz-Lazaro, Pablo Sanchez-Jerez
Oct 29, 2017·Environmental Science and Pollution Research International·Pasqualina LaganàSanti Delia
Oct 29, 2020·Environmental Science and Pollution Research International·Fanyue MengQingqing Cao
Aug 21, 2019·Marine Pollution Bulletin·Sergey M GolubkovAlexei V Tiunov

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