TAILIEUCHUNG - Effects of sewage pollution the structure of the community of Ulva lactuca, Enteremorpha linza and rocky macrofauna in Diflliman of sinop
Untreated sewage and domestic wastes from the Sinop outfall enter the D›flliman region. The effect of this on the distribution of Ulva lactuca, Enteromorpha linza and benthic macrofauna and on enviromental parameters was determined. | Turk J Biol 25 (2001) 93-102 © T†BÜTAK Effects of Sewage Pollution the Structure of the Community of Ulva lactuca, Enteremorpha linza and Rocky Macrofauna in DÝßliman of Sinop Levent BAT, Mehmet AKBULUT, Murat SEZGÜN, Mehmet ‚ULHA University of Ondokuz MayÝs, Sinop Fisheries Faculty, Department of Basic Sciences, Sinop - TURKEY Received: Abstract : Untreated sewage and domestic wastes from the Sinop outfall enter the DÝßliman region. The effect of this on the distribution of Ulva lactuca, Enteromorpha linza and benthic macrofauna and on enviromental parameters was determined. Increases in the growth of opportunistic green algae such as Ulva lactuca and Enteromorpha linza in response to increased nutrient supply in the DÝßliman coastal ecosystems in Sinop are reported in the present study. The results of this study show that organic enrichment also increases, with Mytilus galloprovincialis (Mollusca), Erichthonius brasiliensis, Echinogammarus olivii and Amphitoes ramondi, Idotea baltica and Sphaeroma serratum (Crustacea) being the most abundant species. Key Words: Organic content, Ulva lactuca, Enteromorpha linza, biomass, quadrat Introduction During the past few decades, marine coastal areas all over the world have been exposed to many environmental hazards. The most potentially threatening of these have been the widespread use of various persistent pollutants and poisonous chlorinated compounds, heavy metals and residual nuclear wastes. However eutrophication, defined as an increase in nutrients leading to an increase in the growth of plants such as phytoplankton or opportunistic green macroalgae such as Ulva and Enteremorpha spp, is also now perceived as a serious threat (1-3). It is now increasingly apparent that nutrient enrichment is about to cause or indeed has already brought about eutrophication on a permanent basis in some coastal waters and even in entire sea areas (1, 4-7). There are good reasons to believe that eutrophication will become
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