Comparative trace element trends in Posidonia oceanica and its sediments along the Turkish-Mediterranean coast

Abstract Concentrations of eight trace elements (V, Cr, Ni, Cu, Zn, As, Cd, and Pb) were investigated in Posidonia oceanica blades and in the sediments sampled from 23 stations along the Turkish-Mediterranean Sea coast. Trace element (TE) concentration in both sediment and P. oceanica showed a statistically significant distribution among sampling stations. Most of the TE concentration in samples varied remarkably among stations without a consistent trend. Concentrations of Zn, Cd, Cu, and Pb in sediment of all of the sampling stations were determined as non-polluted based on the comparison with the sediment quality guideline index. More than quarter of the sampling stations were found as moderately or heavily polluted for Cr, Ni, and As. The mean TE concentrations found in the sediment sample in the present study were similar to the concentrations reported from the different parts of the eastern Mediterranean Sea. TE concentrations in P. oceanica were generally lower compared to the concentrations in the sediment except for Cd, Zn, and Cu. While positive correlation was found for Ni concentrations between sediment and P. oceanica samples, negative correlation was detected for V, Cr, Zn, Cu, As, and Cd concentrations between sediment and P. oceanica. The highest bioaccumulation factor in P. oceanica was calculated for Cd. The study area of the present study, especially the western sites (provinces of Antalya and Muğla) hosts millions of tourists annually and under the influence of intensive human activities in summer. Thus, coastal waters are heavily exposed to TEs and significantly positive correlations were detected between the anthropogenic TE pollutants (As, Cd, Cu, Zn, Pb, and V) and natural sourced TE (Ni and Cr).

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Elevated trace elements in Posidonia oceanica and Cymodocea nodosa at six Mediterranean volcanic seeps

10.1101/433987 ◽

2018 ◽

Author(s):

A.K. Mishra ◽

R. Santos ◽

J.M. Hall-Spencer

Keyword(s):

Sediment Quality ◽

Posidonia Oceanica ◽

Marine Biota ◽

Cymodocea Nodosa ◽

Reference Sites ◽

Reference Levels ◽

Sediment Quality Guideline ◽

Adverse Impacts ◽

Seawater Ph ◽

Quality Guideline

AbstractSeagrasses form important habitats around shallow marine CO2 seeps, providing opportunities to assess trace element (TE) accumulation along gradients in seawater pH. Here we assessed Cd, Cu, Hg, Ni, Pb and Zn levels in sediment and seagrasses at six CO2 seeps and reference sites off Italy and Greece. Some seep sediments had much higher concentrations of TEs, the extreme example being Cd at 43-fold above reference levels. Sediment Quality Guideline (SQG) scores indicated that three seeps had sediment TEs levels likely to have “Adverse impacts” on marine biota; namely Vulcano (for Hg), Ischia (for Cu) and Paleochori (for Cd and Ni). SQG indicated seep sediments of Italian seeps were adversely affected by Cu and Hg, whereas Greek CO2 seeps were affected by Cd and Ni. An increase in sediment TEs levels positively corelated with higher levels of TEs in seagrass roots of Posidonia oceanica (Zn and Ni) and Cymodocea nodosa (Zn). Differences in the bioavailability and possible toxicity of TEs helps explain why seagrasses were abundant at some CO2 seeps but not others.

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Assessment of heavy metals by sediment quality guideline in surficial sediments of Abu Qir Bay southeastern mediterranean sea, Egypt

Environmental Earth Sciences ◽

10.1007/s12665-014-3646-2 ◽

2014 ◽

Vol 73 (7) ◽

pp. 3603-3609 ◽

Cited By ~ 6

Author(s):

Maha Ahmed Mohamed Abdallah ◽

Adel Amer Mohamed

Keyword(s):

Heavy Metals ◽

Mediterranean Sea ◽

Sediment Quality ◽

Surficial Sediments ◽

Sediment Quality Guideline ◽

Quality Guideline ◽

Abu Qir Bay

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First records of six species of crustaceans for the eastern Mediterranean Sea

Crustaceana ◽

10.1163/15685403-00003953 ◽

2019 ◽

Vol 92 (11-12) ◽

pp. 1403-1414

Author(s):

Ozge Ozgen ◽

Sermin Acik ◽

Kerem Bakir

Keyword(s):

Mediterranean Sea ◽

New Record ◽

New Records ◽

Eastern Mediterranean ◽

Aegean Sea ◽

Posidonia Oceanica ◽

The Other ◽

Eastern Mediterranean Sea ◽

Crustacean Species ◽

Ecological Characteristics

Abstract This paper deals with six crustacean species associated with Posidonia oceanica (Linnaeus) Delile, 1813 meadows along the Aegean coasts of Turkey: Caprella tavolarensis, Eriopisella ruffoi, Iphimedia vicina, Astacilla mediterranea, Apseudopsis minimus and Macropodia deflexa. Apseudopsis minimus is a new record for the Turkish coast of the Aegean Sea, the other five species are new records for the eastern Mediterranean. Brief descriptions of the species and their morphological and ecological characteristics are given.

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Atmospheric trace element and major ion concentrations over the eastern Mediterranean Sea: Identification of anthropogenic source regions

Atmospheric Environment ◽

10.1016/j.atmosenv.2005.07.031 ◽

2005 ◽

Vol 39 (34) ◽

pp. 6376-6387 ◽

Cited By ~ 29

Author(s):

Gülen Güllü ◽

Güray Doğan ◽

Gürdal Tuncel

Keyword(s):

Trace Element ◽

Mediterranean Sea ◽

Eastern Mediterranean ◽

Anthropogenic Source ◽

Eastern Mediterranean Sea ◽

Ion Concentrations ◽

Major Ion ◽

Source Regions

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Occurrence of Bluntnose Sixgill Shark Hexanchus griseus (Bonnaterre, 1788) in Yeşilovacık Bay, Northeastern Mediterranean

Asian Journal of Biology ◽

10.9734/ajob/2018/v7i230050 ◽

2019 ◽

pp. 1-7

Author(s):

Deniz Ayas ◽

Deniz Ergüden ◽

Nuray Çiftçi ◽

Mısra Bakan

Keyword(s):

Mediterranean Sea ◽

Eastern Mediterranean ◽

Mediterranean Coast ◽

Shark Species ◽

Female Specimen ◽

The West ◽

Protection Measures ◽

Total Length ◽

Iskenderun Bay ◽

Specific Conservation

Aims: In this study, an individual of H. griseus was caught from the Mersin Bay and this ichthyologic note presents a new female record of H. griseus for Mersin Bay, Mediterranean coast of Turkey. This study aims to contribute to the chronological records of the species in the Mediterranean Sea. Place and Duration of Study: Yeşilovacık bay is a small bay in the west of Mersin Bay. Yeşilovacık bay which lies at approximately 36°07’n latitude, 33°37’e, longitude and about 143 km Western of in Mersin province, Turkey. Sample: On 19 March 2018 blunthose sixgill shark specimen was measured and then deposited in the Museum of the Systematic, Faculty of Fisheries, University of Mersin. Methodology: A female specimen of H. griseus with a total length (TL) of 350 cm (400 kg) was captured by a commercial trawl at a depth around of 280 m of the Yeşilovacık Bay (Northeastern Mediterranean Sea), Turkey. Total length was measured to the nearest 1 mm and the weight of the specimen was determined to the nearest kilogram. Results: Measurements of the specimen are presented and compared with the previous records of H. griseus in the Eastern Mediterranean coast of Turkey (Iskenderun Bay), which are given in Table. The identification was carried out according to the previous report. Conclusion: To date specific conservation measures are not known for this species for the Northeastern Mediterranean coast of Turkey. Thus, the effect of coastal fishery for sharks should be regularly monitored and protection measures should be taken in this region in order for this shark species to continue their conservation for the next generation.

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