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

2015-10-05
Akçay, İsmail
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.

Suggestions

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...
Spatial and Temporal Variations of Inorganic and Organic Forms of Phosphorus in the Surface and Deep Waters of Erdemli Shelf Zone of Mersin Bay
DOĞAN SAĞLAMTİMUR, NESLİHAN; Tuğrul, Süleyman (2013-01-01)
The aim of this study was to understand spatial and temporal variations of inorganic and organic forms of phosphorus in the surface and deep waters of Erdemli shelf zone of the Mersin Bay. For this goal, timeseries hydrographical and phosphorus data were obtained monthly at the three selected stations between December 2001 and December 2003. The present results have shown that the concentrations of different fractions of total phosphorus displayed a decreasing trend from nearshore to shelfbreak zone of the ...
Riverine nutrient inputs to the Mersin Bay, northeastern Mediterranean
Akçay, İsmail (2018-10-21)
In this study, biochemical (nutrients, total phosphorus (TP), biological oxygen demand) parameters were determined seasonally at downstream points of the five regional rivers (major/small ones: Ceyhan, Seyhan, Goksu, Berdan, Lamas) flowing into wide shelf zone of the northeastern (NE) Mediterranean. Long-term chemical data obtained seasonally in the 2008-2015 period were examined to assess seasonal variations in the chemical concentrations and annual mass influxes to the studied coastal sites, leading to be...
Spatial distribution and source identification of persistent organic pollutants in the sediments of the Yesilirmak River and coastal area in the Black Sea
Dinc, Burak; ÇELEBİ, AHMET; Avaz, Gulsen; Canl, Oltan; Guzel, Baris; EREN, BEYTULLAH; Yetiş, Ülkü (2021-11-01)
Surface sediments from the Yes,ilirmak River and the near coastal area in the Black Sea were collected using sediment traps to assess the spatial distributions of persistent organic pollutants and find their potential sources. Analyses were carried out to determine the concentrations of the persistent organic pollutants of seventeen polychlorinated dibenzo-p-dioxins and dibenzofurans, sixteen polycyclic aromatic hydrocarbons, seven polychlorinated biphenyls, and eight organochlorine pesticides using high-re...
Apportionment of polycyclic aromatic hydrocarbon sources in lower Fox River, USA, sediments by a chemical mass balance model
Su, Mc; Chrıstensen, Er; Karls, Jf; Kosuru, S; İmamoğlu, İpek (2000-06-01)
Four sediment cores were collected from the lower Fox River, Wisconsin, USA, to identify possible sources of polycyclic aromatic hydrocarbons (PAHs) using a chemical mass balance model. The cores, which were obtained in 1995 from areas close to Green Bay, Wisconsin, USA, had total PAH concentrations between 19.3 and 0.34 ppm. To determine historical trends of PAH inputs, Pb-210 and Cs-137 dating was used, and elemental carbon particle analysis was done to characterize particles from the combustion of coal, ...
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.