Distribution and abundance of moon jellyfish (Aurelia aurita) and its zooplankton food in the Black Sea

Mutlu, E
The distribution of moon jellyfish (Aurelia aurita Linnaeus, 1758) in the Black Sea was determined from plankton samples collected above the anoxic zone (maximum depth 200 m) in the summer, winter and spring during 1991-1995. Distribution was patchy. Average biomass ranged from 98 to 380 g m(-2), and abundance varied from 2 to 14 individuals m(-2). Biomass and abundance peaked in late spring and summer. The distribution was correlated with hydrographic features in the Black Sea, with higher concentrations occurring at the peripheries of anticyclonic eddies. Centers of the two main cyclonic gyres generally had a low biomass of A. aurita. From July 1992 to March 1995, the populations were largely concentrated in offshore regions. A. aurita were confined to the upper part of the mixed layer. Smaller A. aurita (less than or equal to1 cm) were present in early spring (March), and individuals reached maximum size in the summer. Release of the epyhrae occurred in spring on the northwestern shelf of the sea when the seawater temperature was 11-12 degreesC. Microscopic analysis of stomach contents showed that copepods and mollusks form their main diet.


Distribution and abundance of ctenophores, and their zooplankton food in the Black Sea. I. Pleurobrachia pileus
Mutlu, E; Bingel, F (Springer Science and Business Media LLC, 1999-12-01)
The distribution of Pleurobrachia pileus Muller, 1776 in the Black Sea was determined using plankton samples collected above the anoxic zone (maximum of 200 m) in the winter, spring, and summer of 1991 to 1995; The summer samples were collected in 1991 to 1993 (for a previous) and are included in this paper for comparative purposes. High concentrations of P. pileus were found at the northern edges of anticyclonic eddies along the southern coastal regions. The biomass and abundance of P. pileus increased fro...
Distribution of phytoplankton in the southern Black Sea in summer 1996, spring and autumn 1998
Eker-Develi, E; Kıdeyş, Ahmet Erkan (2003-03-01)
The species composition, abundance, and biomass of micro- (>15 mum) and nano- (<15 mu m) phytoplankton were studied along the southern Black Sea during June-July 1996 and March-April and September 1998. A total of 150 species were identified, similar to 50% of them being dinoflagellates. The average total phytoplankton abundance changed from 77 x 10(3) Cells l(-1) in spring to 110 x 10(3) cells l(-1) in autumn and biomass from 250 mu g l(-1) in summer to 1370 mu g l(-1) in spring. Based on the extensive sam...
Distribution of tin in the northeastern Mediterranean
Yemeni̇ci̇ğlu, Semal; Saydam, Cemal; Sali̇hoğlu, İlkay (Elsevier BV, 1987)
Concentrations of tin, one of the naturally methylated elements, was determined in sea water, sediments and organisms, collected from the Northeastern Mediterranean. A hydride generation technique was employed, in which the tin and methyltin, were converted to their hydrides. The hydrides produced were detected by atomic absorption spectrophotometer. On the average, the inorganic tin content of sea water samples ranged between 1.1–236 ng/1. Although the dominant methyltin species was dimethyltin, all forms ...
Abundance and biomass of picoplanktonic Synechococcus (Cyanobacteria) in a coastal ecosystem of the northeastern Mediterranean, the Bay of Iskenderun
POLAT, SEVİM; Uysal, Zahit (2009-01-01)
Changes in abundance and biomass of Synechococcus were studied during five cruises carried out between November 2004 and September 2005 in the Iskenderun Bay, northeastern Mediterranean. In addition, spatial and temporal variations in physico-chemical factors and Chl a were measured. Abundance ranged from 0.2 x 10(4) to 23.09 x 10(4) cells ml(-1), whereas the biomass ranged from 0.19 (1) to 23.01 mu gC l(-1) in the bay. Synechococcus was found most numerous during September 2005 in the shallower part of the...
Annual cycle of zooplankton abundance and species composition in Izmit Bay (the northeastern Marmara Sea)
Isinibilir, Melek; Kıdeyş, Ahmet Erkan; TARKAN, AHMET NURİ; Yılmaz, İsmail (2008-07-30)
The monthly abundance, biomass and taxonomic composition of zooplankton of Izmit Bay (the northeastern Marmara Sea) were studied from October 2001 to September 2002. Most species within the zooplankton community displayed a clear pattern of succession throughout the year. Generally copepods and cladocerans were the most abundant groups, while the contribution of meroplankton increased at inner-most stations and dominated the zooplankton. Both species number (S) and diversity (if) were positively influenced ...
Citation Formats
E. Mutlu, Distribution and abundance of moon jellyfish (Aurelia aurita) and its zooplankton food in the Black Sea. 2001, p. 339.