Effects of river inputs on particulate organic matter composition and distributions in surface waters and sediments of the Mersin Bay, Northeastern Mediterranean Sea

Date

2022-05-01

Author

Akçay, İsmail
Tuğrul, Süleyman
Özhan, Koray

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Terrestrial inputs-induced eutrophication in the P-depleted Northeastern (NE) Mediterranean shelf waters has led to changes in particulate organic matter (POM) composition and distributions in the water column and surface sediments. The present study aimed to understand the impacts of terrestrial nutrient and POM inputs on coastal eutrophication, bulk POM composition and concentrations in surface waters and sediments of the Mersin Bay, located at the Cilician Basin of NE Mediterranean Sea. The present results showed that the regional rivers and wastewater discharges markedly increased nutrient concentrations, leading to enhanced eutrophication and POM concentrations surface waters of the Mersin inner bay. The C/N and C/P molar ratios derived from the regressions of POM data in surface waters were 6.92 and 129, respectively. The higher C/N and C/P molar ratios in the surface sediments of productive Mersin Bay indicated selective decay of N, P-containing organic matter buried in muddy sediments. Close positive correlations were found in sediment organic matter and mud contents, indicating the crucial role of fine particles in transport and enrichment of organic matter in the muddy shelf sediments of NE Mediterranean Sea.

Subject Keywords

Mersin Bay, Northeastern Mediterranean Sea, Particulate organic matter, Sediment, Total organic carbon

URI

https://hdl.handle.net/11511/97589

Journal

Regional Studies in Marine Science

DOI

https://doi.org/10.1016/j.rsma.2022.102316

Collections

Graduate School of Marine Sciences, Article

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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 (2015-9-8) 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. H...
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Citation Formats

İ. Akçay, S. Tuğrul, and K. Özhan, “Effects of river inputs on particulate organic matter composition and distributions in surface waters and sediments of the Mersin Bay, Northeastern Mediterranean Sea,” Regional Studies in Marine Science, vol. 52, pp. 0–0, 2022, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/97589.