SPATIAL VARIATIONS OF PARTICULATE ORGANIC MATTER (POM) COMPOSITION AND CONCENTRATIONS IN SURFACE WATERS AND SEDIMENTS OF THE MERSIN BAY

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2015-9-8

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Akçay, İsmail

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Spatial and temporal variations of hydrophysical properties (temperature, salinity, density), eutrophication-related parameters (nutrients, Chl-a, dissolved oxygen) and particulate organic matter (POM) concentrations and composition (C/N/P) in water column and surface sediments were examined at 33 stations between April 2014 and February 2015 in Mersin Bay located at northeastern (NE) Mediterranean. Regional and seasonal distributions of nutrients in the Mersin Bay are affected by human-induced pressures. Higher concentrations in polluted coastal waters enhanced biomass (in terms of Chl-a) and POM concentrations in both spring and winter. Particulate organic carbon (POC) concentrations exceeded 100 µM in the eutrophic coastal surface waters; similar patterns were also observed in particulate organic nitrogen (PON) and total particulate phosphorus (TPP) concentrations; bulk POM concentration decreased by at least 5-10 fold in less contaminated central bay waters of the bay. However, POM content of surface sediments within the bay displayed different spatial patterns; higher concentrations of total organic carbon (TOC), total nitrogen (TN) and particulate organic phosphorus (POP) were observed in less polluted sites having muddy sediments on the bottom. Regression analysis of POM concentrations and grain-size distribution shows there is a significant and positive correlation between POM concentrations and mud content in Mersin Bay surface sediments located at NE Mediterranean.

Subject Keywords

Mersin Bay, nutrients, POM, sediment

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https://hdl.handle.net/11511/94957

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Graduate School of Marine Sciences, Thesis

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SPATIAL VARIATIONS OF PARTICULATE ORGANIC MATTER (POM) COMPOSITION AND CONCENTRATIONS IN SURFACE WATERS AND SEDIMENTS OF THE MERSIN BAY Akçay, İsmail; Tuğrul , Süleyman; Department of Oceanography (2015-10-05) Spatial and temporal variations of hydrophysical properties (temperature, salinity, density), eutrophication-related parameters (nutrients, Chl-a, dissolved oxygen) and particulate organic matter (POM) concentrations and composition (C/N/P) in water column and surface sediments were examined at 33 stations between April 2014 and February 2015 in Mersin Bay located at northeastern (NE) Mediterranean. Regional and seasonal distributions of nutrients in the Mersin Bay are affected by human-induced pressures. ...
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Citation Formats

İ. Akçay, “SPATIAL VARIATIONS OF PARTICULATE ORGANIC MATTER (POM) COMPOSITION AND CONCENTRATIONS IN SURFACE WATERS AND SEDIMENTS OF THE MERSIN BAY,” M.S. - Master of Science, Middle East Technical University, 2015.