Distribution of gelatinous Macrozooplankton in the southern Black sea during 1996 1999

Date

2001-01-01

Author

Kıdeyş, Ahmet Erkan

Metadata

Show full item record

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

Item Usage Stats

162
views

0
downloads

In this study, spatial and temporal distributions of three gelatinous macrozooplankton, the scyphozoan Aurelia aurita and the ctenophores Pleurobrachia pileus and Mnemiopsis leidyi, were evaluated using the data obtained from seven southern Black Sea cruises carried out from 1996 to 1999. A comparison of nets used for the sampling of gelatinous macrozooplankton illustrated the superiority of the Hensen net with a larger mesh size (300 mum) over the Nansen net (112 mum). P. pileus was mainly concentrated below the mixed layer, while A. aurita and M. leidyi were generally confined to surface waters. Horizontally, P. pileus was associated with deep, offshore waters. P. pileus also displayed the least interannual variation of the three species. Biomass of A. aurita and M. leidyi varied substantially seasonally and inter-annually. In September 1999, the average biomass of M. leidyi was at its lowest level (12 g wet weight m(-2)) since its explosive development at the end of the 1980s. This was associated with the appearance of the new predatory ctenophore Beroe ovata, which appeared in the Black Sea at the end of the 1990s.

Subject Keywords

Biomass, Explosive, Temporal distribution, Mesh size, Mixed layer

URI

https://hdl.handle.net/11511/29972

Journal

Marine Biology

DOI

https://doi.org/10.1007/s002270100602

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Distribution of the alien ctenophore Mnemiopsis leidyi in the Caspian Sea in August 2001 Kıdeyş, Ahmet Erkan (2003-01-01) In this study, spatial and vertical distributions of the invasive ctenophore Mnemiopsis leidyi in the Caspian Sea were evaluated by using data collected at 41 stations during the August 2001 cruise. A comparison of data from different depths revealed that M. leidyi were generally confined to surface waters. The maximum size of the ctenophore was only 41-45 mm, and the bulk of individuals (85.5%) were < 10 mm in length. The average and maximum biomasses of M. leidyi were calculated as 120 and 351 g wet weigh...
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...
Assessment of temporal variation and sources of PCBs in the sediments of Mediterranean Sea, Mersin Bay, Turkey Gedik, Kadir; İmamoğlu, İpek (Elsevier BV, 2011-01-01) Information on temporal distribution of polychlorinated biphenyls (PCBs) in the coastal sediments of Mediterranean Sea, Mersin was compiled using data published between 1980 and 2009, and the present study. The first congener specific PCB results from the region yield concentration levels of Sigma(41) PCBs in sediments ranging from 0.61 to 1.04 ng g(-1). Sediment profiles show penta-, hexa- and hepta-chlorobiphenyls, specifically, #149 and 153 as the most abundant congeners in all samples. Comparison of tot...
Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W -> lv and Z -> ll Cross Sections Aad, G.; et. al. (2012-07-05) AQCD analysis is reported of ATLAS data on inclusive W-+/- and Z boson production in pp collisions at the LHC, jointly with ep deep-inelastic scattering data from HERA. The ATLAS data exhibit sensitivity to the light quark sea composition and magnitude at Bjorken x similar to 0:01. Specifically, the data support the hypothesis of a symmetric composition of the light quark sea at low x. The ratio of the strange-to-down sea quark distributions is determined to be 1:00(-0:28)(+0.25) at absolute four-momentum t...

Citation Formats

A. E. Kıdeyş, “Distribution of gelatinous Macrozooplankton in the southern Black sea during 1996 1999,” Marine Biology, pp. 535–547, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/29972.