Changes of Eutrofication Indicator Parameters (TP, DIN, Chl-a and TRIX) in the Cilician Basin (Northeast Mediterranean)

Date

2011-01-01

Author

TUĞRUL, SÜLEYMAN
Uysal, Zahit
Erdogan, Emine
Yucel, Nebil

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

245
views

0
downloads

Eutrophication processes and changes in coastal ecosystem are determined by the coastal/open sea interactions and rates of nutrient pollution. The Cilician Basin shelf waters are affected not only by intense industrial activities and increased population, but also by complex atmosphere-sea-land interactions. There is a recognizable difference between water qualities of Mersin bay coastal and the Cilician open waters depleted in nutrients. Eutrophic conditions have developed in the eastern bay shallow waters heavily polluted by land-based inputs during the last few decades. In the present study, basic chemical parameters measured seasonally in water column during the 8 field surveys, as a part of TUBITAK project, in the period of November 2005-September 2007, have been evaluated. Cilician coastal waters were always poor in reactive phosphate (0.02-0.05 mu M) throughout the year. However, there is a distinct decrease and seasonal changes in total phosphorus (TP) levels from the polluted inner bay (0.15-0.20 mu M) to the Cilician open waters (0.05-0.07 mu M). The surface TRIX index values, computed from % dissolved oxygen saturation, dissolved inorganic nitrogen, TP and chlorophyll-a concentrations, increase from <2 (oligotrophic property) in the Cilicial open water to levels of 3-6 in the pollutted coastal zone. In the shallow zone between Mersin Harbour and Seyhan delta, where large amounts of nutrients are discharged and TRIX values consistently >4 (showing tendency from mesotrophic to eutrophic propery), biomass level is high and the Secchi Disc depth varies between 1.5-3 meters.

Subject Keywords

Chlorophyll-a, Cilician Basin, Total phosphorus, TRIX index

URI

https://hdl.handle.net/11511/30112

Journal

EKOLOJI

DOI

https://doi.org/10.5053/ekoloji.2011.805

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Effects of water temperature on summer periphyton biomass in shallow lakes: a pan-European mesocosm experiment Mahdy, Aldoushy; Hilt, Sabine; Filiz, Nur; Beklioğlu, Meryem; Hejzlar, Josef; Ozkundakci, Deniz; Papastergiadou, Eva; Scharfenberger, Ulrike; Sorf, Michal; Stefanidis, Kostas; Tuvikene, Lea; Zingel, Priit; Sondergaard, Martin; Jeppesen, Erik; Adrian, Rita (2015-07-01) Periphyton communities play an important role in shallow lakes and are controlled by direct forces such as temperature, light, nutrients, and invertebrate grazing, but also indirectly by planktivorous fish predation. We performed a pan-European lake mesocosm experiment on periphyton colonization covering five countries along a north/south geographical/temperature gradient (Estonia, Germany, Czech Republic, Turkey, and Greece). Periphyton biomass on artificial polypropylene strips exposed at 50 cm water dept...
Variation in growth, reproduction, and resource allocation in an aquatic plant,Vallisneria spinulosa: the influence of amplitude and frequency of water level fluctuations Li, Lei; Ding, Mingming; Jeppesen, Erik (Springer Science and Business Media LLC, 2020-09-01) Water level fluctuations (WLF), one of the most affected ecological drivers by climate change, are dominant forces controlling submerged macrophyte performance and distribution in freshwater ecosystems. Submerged macrophytes are prominent components of shallow lakes, predicting their response to WLF is therefore crucial for the management and conservation of these valuable and vulnerable ecosystems. We conducted an experiment in 15 outdoor mesocosms to explore the influence of WLF on the performance ofValli...
Assessment of Dewatering Requirements and their Anticipated Effects on Groundwater Resources: A Case Study from the Caldag Nickel Mine, Western Turkey Peksezer-Sayit, Ayse; Cankara-Kadioglu, Cigdem; Yazıcıgil, Hasan (2015-06-01) Dewatering requirements of three open pits located in western Turkey and the impact of dewatering on groundwater resources were evaluated using a three-dimensional numerical groundwater flow model. The groundwater was modeled using MODFLOW software and the dewatering was simulated using the MODFLOW Drain Package. The drain cell configurations were determined by pit boundaries; invert elevations of drains corresponded to the bench elevations in the mining schedule, which varied dynamically among the three pi...
Patterns of Seasonal Stability of Lake Phytoplankton Mediated by Resource and Grazer Control During Two Decades of Re-oligotrophication Fu, Hui; Yuan, Guixiang; Özkan, Korhan; Johansson, Liselotter Sander; Sondergaard, Martin; Lauridsen, Torben L.; Jeppesen, Erik (Springer Science and Business Media LLC, 2020-09-01) Human-induced changes in external nutrient loading affect the phytoplankton community and abundance directly by changing the amount of nutrients available, but also indirectly through changes in the zooplankton (that is, grazer) community structure, mediated in part by changes in the fish community structure and biomass. Such shifts affect the species dynamics and community succession of lake phytoplankton communities, and they may ultimately influence community stability. However, the relative importance o...
Formation of Zn- and Fe-sulfides near hydrothermal vents at the Eastern Lau Spreading Center: implications for sulfide bioavailability to chemoautotrophs Hsu-Kim, Heileen; Mullaugh, Katherine M.; Tsang, Jeffrey J.; Yücel, Mustafa; Luther, George W. (2008-05-19) Background: The speciation of dissolved sulfide in the water immediately surrounding deep-ocean hydrothermal vents is critical to chemoautotrophic organisms that are the primary producers of these ecosystems. The objective of this research was to identify the role of Zn and Fe for controlling the speciation of sulfide in the hydrothermal vent fields at the Eastern Lau Spreading Center (ELSC) in the southern Pacific Ocean. Compared to other well-studied hydrothermal systems in the Pacific, the ELSC is notabl...

Citation Formats

S. TUĞRUL, Z. Uysal, E. Erdogan, and N. Yucel, “Changes of Eutrofication Indicator Parameters (TP, DIN, Chl-a and TRIX) in the Cilician Basin (Northeast Mediterranean),” EKOLOJI, pp. 33–41, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30112.