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Download Aquatic Invasions in the Black, Caspian, and Mediterranean by Henri J. Dumont, Tamara A. Shiganova, Ulrich Niermann PDF

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By Henri J. Dumont, Tamara A. Shiganova, Ulrich Niermann

The Mediterranean, Black, and Caspian Seas, the rivers and canals that attach them, and the large quantity of transport within the zone, characterize a conduit for aquatic invasion, whose effects are just now starting to be understood. This booklet presents an up to date review of jelly invasions within the Ponto-Caspian that have affected neighborhood ecosystems because the early Eighties, contrasting that with different organic invasions, looking for underlying principles.

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Extra info for Aquatic Invasions in the Black, Caspian, and Mediterranean Seas

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M. Y. Vinogradov, 1991. Long-term changes in the biomass of plankton in open areas of the Black Sea. Oceanology 31: 716-721. Stockwell D. A, T. E. Whitledge, S. I. Zeeman, K. O. Coyle, J. M. Napp, R. D. Brodeur, A. I. Pinchuk & G. R. , 2001. Anomalous conditions in the SE Bering Sea, 1997: nutrients, phytoplankton, and zooplankton. Fisheries and Oceanography 10: 99-116. Tkach, A. , A. D Gordina, U. Niermann, A. E. Kideys & V. E. Zaika, 1998. Changes in feeding parameters of fish larvae in the Black Sea during last decade comparing 1950-1960s.

Concentrates (from 30 to 40 ml) were fixed in formaldehyde or glutaraldehyde (2% final concentration). Cells were identified and enumerated under a light microscope 1-2 months after collection. In some cruises phytoplankton cells were enumerated in non-fixed concentrates upon collection. Microplankton was collected in 5 l water bottles taken from different depths during surveys or from bottles of a rosette of CTD “Sea Bird”. , 1977), using acridin staining. Heterotrophic flagellates were stained by primuline and studied by epifluorescence (Caron, 1983).

In addition, we analyzed data on ichthyoplankton obtained in an ichthyoplankton survey of the Azov Sea Research Institute for Fisheries from Kerch Strait to Tuapse in August 15-19, 1999 (29 stations, 24 hauls) and in a cruise of the R/V “Aqvanavt” in March 2000 (25 stations), April 2001 (50 stations, 150 hauls). 1 m2 opening, 180 µm mesh size), while jelly - and ichthyoplankton were collected by a Bogorov-Rass net (1 m2 opening, 500 µm mesh size). The samplings were performed from the upper boundary of the anoxic layer to the surface.

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