scholarly journals Distribution and transfer of trace metals in the Aegean Seawater (Eastern Mediterranean Basin)

2000 ◽  
Vol 1 (2) ◽  
pp. 5 ◽  
Author(s):  
F. VOUTSINOU-TALIADOURI ◽  
C. ZERI ◽  
A. MORIKI
Keyword(s):  
Trace Metals ◽  
Trace Metal ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
The Black Sea ◽  
The South ◽  
Metal Concentrations ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

Recent measurements of dissolved Cd, Cu, Ni and Mn in 324 water samples of the Aegean Sea fill the gap of missing knowledge in this part of the Eastern Mediterranean and try to identify their main input sources and spreading pathways. The analyses indicate that trace metal concentrations in the North and South Aegean Sea are generally in good agreement with those reported for the Western Mediterranean Sea. In the North Aegean Sea the trace metal distribution patterns differentiate mainly according to the existing water masses. Hence, a strong influence of the Black Sea Water, enriched in trace metals, is clearly recorded for Mn. Concentrations of this metal are one order of magnitude higher in the surface layer than those of the deeper waters. This feature is followed to a lesser degree also by Cd, Cu and Ni. Trace metal concentrations in the South Aegean Sea reveal almost constant values throughout the watercolumn similar to those observed in the North Aegean Sea below the depth of 100 m. Manganese values in the South Aegean Sea are considerably lower comparing with the North Aegean ones, showing relatively enhanced surface values which decrease with depth.

scholarly journals High resolution simulations on the North Aegean Sea seasonal circulation

2003 ◽  
Vol 21 (1) ◽  
pp. 251-265 ◽  
Author(s):  
V. H. Kourafalou ◽  
K. Barbopoulos
Keyword(s):  
High Resolution ◽  
Sea Water ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Ocean Model ◽  
The Black Sea ◽  
The North ◽  
Seasonal Characteristics ◽  
North Aegean ◽  
North Aegean Sea

Abstract. The seasonal characteristics of the circulation in the North Aegean Sea are examined with the aid of a climatological type simulation (three-year run with perpetual year forcing) on a fine resolution grid (2.5 km by 2.5 km). The model is based on the Princeton Ocean Model with a parameterisation of plume dynamics that is employed for the input of waters with hydrographic properties that are different than the properties of basin waters, as the Black Sea Water (BSW) outflow through the Dardanelles Strait and riverine sources. The model is nested with a sequence of coarser regional and basin-wide models that provide for the long-term interaction between the study area and the Eastern Mediterranean at large. The results are employed to discuss the response of the North Aegean to the important circulation forcing mechanisms in the region, namely wind stress, heat and salt fluxes, buoyancy due to rivers and the BSW outflow (which is low in salinity and occasionally low in temperature) and the interaction with the Southern Aegean. The high resolution allows for the detailed representation of the complicated topography that presides in the region. This helps produce a rich eddy field and it allows for variability in the pathways of BSW that has implications in the basin hydrography and circulation.Key words. Oceanography: general (continental shelf processes; numerical modeling)

scholarly journals A three dimensional, full life cycle, anchovy and sardine model for the North Aegean Sea (Eastern Mediterranean): Validation, sensitivity and climatic scenario simulations

2021 ◽  
Vol 22 (3) ◽  
pp. 653
Author(s):  
ATHANASIOS GKANASOS ◽  
EUDOXIA SCHISMENOU ◽  
KOSTAS TSIARAS ◽  
STYLIANOS SOMARAKIS ◽  
MARIANNA GIANNOULAKI ◽  
...  
Keyword(s):  
Temperature Increase ◽  
Eastern Mediterranean ◽  
Larval Growth ◽  
Somatic Growth ◽  
Aegean Sea ◽  
Fish Growth ◽  
Prey Concentration ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

We present the development of a 3D full-lifecycle, individual-based model (IBM) for anchovy and sardine, online coupled to an existing hydrodynamic/biogeochemical low-trophic level (LTL) model for the North Aegean Sea. It was built upon an existing 1D model for the same species and area, with the addition of a horizontal movement scheme. In the model, both species evolve from the embryonic stage (egg+yolk sac larva) to the larval, juvenile, and adult stages. Somatic growth is simulated with the use of a “Wisconsin” type bioenergetics model and fish populations with an adaptation of the ‘super individuals’ (SI) approach. For the reference simulation and model calibration, in terms of fish growth and population biomass, the 2000-2010 period was selected. Interannual biomass variability of anchovy was successfully represented by the model, while the simulated biomass of sardine exhibited low variability and did not satisfactorily reproduce the observed interannual variability from acoustic surveys. The spatial distribution of both species’ biomass was in relatively good agreement with field data. Additional single-species simulations revealed that species compete for food resources. Temperature sensitivity experiments showed that both species reacted negatively to a temperature increase. Anchovy, in particular, was more affected since its spawning and larval growth periods largely overlap with the period of maximum yearly temperature and low prey concentration. Finally, simulation experiments using IPCC climatic scenarios showed that the predicted temperature increase and zooplankton concentration decrease in the future will negatively affect anchovy, resulting in sardine prevalence.

scholarly journals Development, application and evaluation of a 1-D full life cycle anchovy and sardine model for the North Aegean Sea (Eastern Mediterranean)

PLoS ONE ◽  
2019 ◽  
Vol 14 (8) ◽  
pp. e0219671 ◽  
Author(s):  
Athanasios Gkanasos ◽  
Stylianos Somarakis ◽  
Kostas Tsiaras ◽  
Dimitrios Kleftogiannis ◽  
Marianna Giannoulaki ◽  
...  
Keyword(s):  
Life Cycle ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
The North ◽  
Full Life Cycle ◽  
North Aegean ◽  
Full Life ◽  
North Aegean Sea ◽  
Development Application

Temporal Variations in Fine Sand Assemblages in the North Aegean Sea (Eastern Mediterranean)

2004 ◽  
Vol 89 (2) ◽  
pp. 175-187 ◽  
Author(s):  
Evdokia Kourelea ◽  
Dimitrios Vafidis ◽  
Chariton-Charles Chintiroglou ◽  
Georgios Trontsios ◽  
Louis Chicharo
Keyword(s):  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Fine Sand ◽  
Temporal Variations ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

scholarly journals New Fisheries-related data from the Mediterranean Sea (April 2014)

2014 ◽  
Vol 15 (1) ◽  
pp. 213 ◽  
Author(s):  
K. STERGIOU ◽  
D.C. BOBORI ◽  
F.G. EKMEKÇİ ◽  
M. GÖKOĞLU ◽  
P.K. KARACHLE ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Feeding Habits ◽  
Aegean Sea ◽  
Northern Greece ◽  
Related Data ◽  
The North ◽  
North Aegean ◽  
The Mediterranean ◽  
North Aegean Sea

As part of its policy, Mediterranean Marine Science started from 2014 to publish a new series of collective article with fisheries-related data from the Mediterranean Sea. In this first collective article we present length frequencies and weight-length relationships for the northern brown shrimp Farfantepenaeus aztecus in the eastern Mediterranean, length-weight relationships for 10 fish species in the North Aegean Sea, the feeding habits for 11 sparid fishes in the North Aegean Sea, a review of the existing literature on the feeding and reproduction of common carp Cyprinus carpio in Anatolia (Turkey) and mouth dimensions and the relationships between mouth area and length for seven freshwater fishes from Lake Volvi (Northern Greece).

Food-web traits of the North Aegean Sea ecosystem (Eastern Mediterranean) and comparison with other Mediterranean ecosystems

2010 ◽  
Vol 88 (2) ◽  
pp. 233-248 ◽  
Author(s):  
K. Tsagarakis ◽  
M. Coll ◽  
M. Giannoulaki ◽  
S. Somarakis ◽  
C. Papaconstantinou ◽  
...  
Keyword(s):  
Food Web ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Mediterranean Ecosystems ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

Variability of mesozooplankton spatial distribution in the North Aegean Sea, as influenced by the Black Sea waters outflow

2009 ◽  
Vol 78 (4) ◽  
pp. 557-575 ◽  
Author(s):  
Ioanna Siokou-Frangou ◽  
Soultana Zervoudaki ◽  
Epaminondas D. Christou ◽  
Vassilis Zervakis ◽  
Dimitrios Georgopoulos
Keyword(s):  
Spatial Distribution ◽  
Black Sea ◽  
Aegean Sea ◽  
The Black Sea ◽  
The North ◽  
North Aegean ◽  
North Aegean Sea

The occurrence of the Atlantic penaeid prawn Farfantepenaeus aztecus (Ives, 1891) in the Thermaikos Gulf (Aegean Sea, eastern Mediterranean): considerations on the potential establishment and impact on the autochthonous Melicertus kerathurus (Forskål, 1775)

Crustaceana ◽  
2014 ◽  
Vol 87 (14) ◽  
pp. 1606-1619 ◽  
Author(s):  
Kosmas Kevrekidis
Keyword(s):  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Western Atlantic ◽  
The North ◽  
Levantine Sea ◽  
Farfantepenaeus Aztecus ◽  
Penaeid Prawn ◽  
North Aegean ◽  
Abiotic And Biotic Factors ◽  
North Aegean Sea

The penaeid prawn Farfantepenaeus aztecus (Ives, 1891), of western Atlantic origin, has been recently recorded in a lagoonal environment in the Thermaikos Gulf (North Aegean Sea) increasing the number of alien decapods in the Aegean Sea to 29. The present work reports the finding of F. aztecus in offshore waters on the trawling ground of the Thermaikos Gulf. The presence of this alien species in the area is probably due to ships’ ballast water or to expansion northward from the Levantine Sea where it was recently reported. The life cycle characteristics and several properties of the Atlantic species along with the abiotic and biotic factors of the Thermaikos indicate that the species will eventually be established successfully in the gulf. However, the potential establishment of F. aztecus in the Thermaikos Gulf raises concerns over the fate of the autochthonous penaeid prawn Melicertus kerathurus (Forskål, 1775) in the North Aegean Sea.

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