Changes in species diversity and abundance of the main components of the Black Sea pelagic community during the last decade

Shiganova, TA
Kideys, AE
Gücü, Ali Cemal
Niermann, U
Khoroshilov, VS
The changes in species diversity and abundance of ichthyo- and zooplankton in the northern (mainly in the north-eastern) and southern regions of the Black Sea were analysed prior to and after the Mnemioysis leidyi invasion. In addition, long-term changes in species diversity and abundance of gelatinous animals were briefly considered for understanding the extent of their influence on the pelagic community.
NATO TU Black Sea Project Ecosystem Jodeling as a Management Tool for the Black Sea


Changes in biodiversity of phytoplankton, zooplankton, fishes and macrobenthos in the Southern Caspian Sea after the invasion of the ctenophore Mnemiopsis Leidyi
Roohi, Aboulghasem; Kıdeyş, Ahmet Erkan; Sajjadi, Ameneh; Hashemian, Abdolla; Pourgholam, Reza; Fazli, Hasan; Khanari, Ali Ganjian; Eker-Develi, Elif (2010-07-01)
Monitoring for 6 years (2001-2006) showed that the population explosion of the alien ctenophore Mnemiopsis leidyi in the southern Caspian Sea coincided with a decline in the abundance and species number of mesozooplankton. While this decline appeared to have reduced the nourishment of sprat (also known as kilka), it seemed to have affected phytoplankton favorably mainly due to the decrease in grazing pressure. During 2001-2002, when M. leidyi abundance and biomass were at their highest levels, abundance of ...
Increased Chlorophyll Levels in the Southern Caspian Sea Following an Invasion of Jellyfish
Kıdeyş, Ahmet Erkan; Elif, Eker-Develi; Mélin, Frédéric; Doug, Beare (2008-01-01)
A significant correlation was observed between satellite derived chlorophyll a (Chl a) concentrations and the biomass of the invasive comb jellyfish Mnemiopsis leidyi in the southern Caspian Sea. By consuming the herbivorous zooplankton, the predatory ctenophore M. leidyi may have caused levels of Chl a to rise to very high values (∼9 mg m−3) in the southern Caspian Sea. There might also be several other factors concurrent with predation effects of M. leidyi influencing Chl a levels in this region, such as ...
First Genomic Insights into Pre-pottery Neolithic of Upper Mesopotamia
Altınışık, Nefize Ezgi; Aydoğan, Ayça; Kazancı, Duygu Deniz; Vural, Kıvılcım Başak; Koptekin, Dilek; Özkan, Mustafa; Gemici, Hasan Can; Karamurat, Cansu; Erdal, Ömür Dilek; Götherström, Anders; Sürer, Elif; Atakuman, Çiğdem; Erim, Aslı; Özer, Füsun; Somel, Mehmet; Erdal, Yılmaz Selim (2021-06-01)
Recent studies showed that Neolithic populations in southwest Asia included distinct gene pools in the Levant, in Central Anatolia, and in the Zagros. Further, genomic comparisons suggested that all three populations adopted sedentism and farming without major admixture or replacement from other regions. Meanwhile, the population genetic characteristics of the geographic midpoint of these regions, namely upper Mesopotamia, has not been investigated so far. Here in this study, we present the first genomic da...
Güraslan, Ceren; Fach Salihoğlu, Bettina; Department of Oceanography (2016-10-21)
Black Sea anchovy (Engraulis encrasicolus ponticus) undertake extensive (~1000km long) overwintering migration in autumn from northern spawning grounds to the overwintering areas located at the south-eastern coasts of the Black Sea. When arriving at the Anatolian coast, they support important fisheries in Turkey. Black Sea anchovy is known to experience stock variability quite frequently including stock collapses, which are believed to be closely linked with environmental conditions. Therefore, it is of imp...
Evolution of the Neotethyan branches in the Eastern Mediterranean Petrology and ages of oceanic basalts
Göncüoğlu, Mehmet Cemal; Sayıt, Kaan; Uzunçimen Keçeli, Seda (null; 2015-10-27)
The Anatolian Peninsula in the Eastern Mediterranean includes remnants of the Proto-, Paleo-, Neo- and Para-Tethys oceans. From these, the Neotethys with its various branches has been studied relatively well. Disregarding the embayments of the major oceanic strands, three main oceanic branches are distinguished by the presence of ophiolitic suture belts, separating terranes of continental crust origin (Fig. 1). From S to N these are the Southern branch of Neotethys, the ...
Citation Formats
T. Shiganova, A. Kideys, A. C. Gücü, U. Niermann, and V. Khoroshilov, “Changes in species diversity and abundance of the main components of the Black Sea pelagic community during the last decade,” Zori Rossii, UKRAINE, 1998, vol. 47, Accessed: 00, 2020. [Online]. Available: