By Henri J. Dumont, Tamara A. Shiganova, Ulrich Niermann
The Mediterranean, Black, and Caspian Seas signify 3 fragmentsof the previous Tethys Sea, and are therefore of serious curiosity tounderstanding the evolution of the complete area the place Eurasia,Africa and the Arabian Peninsula meet. Fishing job and maritimetraffic throughout the Dardanelles and Bosporus, and through the Lenin Canalto the Caspian Sea, have drastically intensified. additionally, all majorEuropean rivers at the moment are associated through canals, which means that ships cannavigate from the mouth of the Volga to the Baltic, from the Danubeto the Rhine, and from there to all different significant ecu Rivers. Suchan anastomosed procedure not just permits ships to move among basins:biota persist with of their wake, and therefore the Black Sea and Caspian faunaand plant life, lengthy sequestered of their closed basins, are suddenlygiven a chance to "escape". nonetheless, alien invadersincreasingly locate their option to the 3 seas,as stowaways in ballastwater tanks or connected to the hulls. many of the rookies expandedto huge, immense numbers within the receiving surroundings, the place they might causegreat financial harm. The ebook offers an up to date evaluate ofthe scenario within the Ponto-Caspian with reference to the jelly invasionsthat were perturbing the neighborhood pelagic ecosystems seeing that theearly Nineteen Eighties, contrasting that with organic invasions in other places, totry and determine common underlying ideas.
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Extra info for Aquatic invasions in the Black, Caspian, and Mediterranean seas: the ctenophores Mnemiopsis leidyi and Beroe in the Ponto-Caspian and other aquatic invasions
Schumacher, 1999. Evidence for a substantial increase in gelatinous zooplankton in the Bering Sea, with possible links to climate change. Fisheries and Oceanography 8: 296-306. Brodeur, R. , H. Sugisaki & G. L. Hunt Jr, 2002. Increases in jellyﬁsh biomass in the Bering Sea: implications for the ecosystem. Marine Ecology Progress Series 233: 89-103. Brusca, R. , 1990. Invertebrates. Sinauer Associates, USA: 922 pp. Burrell, V. G. & W. A. Van Engel, 1976. Predation by and distribution of a ctenophore, Mnemiopsis leidyi A.
2000, 2001), and southern regions (A. Kideys, Institute of Marine Research, Turkey, personal communication) in August 1999. Here, we analyze the dynamics of B. cf ovata, the annual and seasonal variability of the development of both M. leidyi and B. cf ovata, and their inﬂuence on the pelagic northeastern Black Sea biota. Ctenophores Mnemiopsis leidyi and Beroe cf ovata and their influence 35 2. , 34 hauls). The expeditions of the R/V “Aqvanavt” were conducted in the Russian part of the Black Sea, from Kerch Strait to Sochi using a grid of stations accepted by the Institute of Oceanology, Russian Academy of Sciences, in cooperation with the Department of Hydrophysics, Southern Branch of Institute of Oceanology, Russian Academy of Sciences, and Azov Sea Research Institute for Fisheries (Fig.
An increase in the biomass of jellyﬁsh that may be related to climate changes has been reported for the western Bering Sea in the early 1990s. Since these jellyﬁsh increased in the same period as the M. leidyi bloom in the Black Sea, the discussion on the jellyﬁsh increase in the Bering Sea is presented here: The arctic Bering Sea is the most northern semi enclosed sea of the Paciﬁc Ocean between east Siberia and Alaska and the Aleutian Islands, connected with the North Polar Sea by the street of Bering.