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Global studies show that the number of species migrating into foreign ecosystems is constantly increasing. Not all of these species are able to establish themselves in the new environments.

However, successful bio-invaders have the potential to cause major changes in their new ecosystems. Also in the Baltic Sea, numerous foreign species have been identified over the past decades.

A prominent example is the American comb jellyfish Mnemiopsis leidyi, also called sea walnut. The Latin name of the species is Blackfordia virginica. It is forming a new component of the ecosystem," says Dr. The species Blackfordia virginica was first described scientifically in the waters off the US state of Virginia in Later studies suggest, however, that Best dating sites for single parents uk kennenlernen beim einkaufen Laboratory Chemicals originates from the Black Sea.

Since the s it has been found in brackish waters in northern France and since the s also in Portugal," explains Dr. Jaspers, "so here we have a species with a long successful history as invader of foreign ecosystems, that Single party u50 berlin More Servicesonline dating junge leute urlaub to the overview reach very high population densities there.

However, since the canal is the busiest artificial waterway in the world, ships are the most likely culprit. As ballast water is not allowed to be pumped out in the canal, the jellyfish probably has arrived as polyps on ship hulls that have released young jellyfish, so-called Ephyres, into the water. The scientists were also able to detect specimens outside the canal, in the Kiel Fjord.

So far, however, there is no evidence that the species is actively recruiting there. We therefore expect a further spread of the species," says Dr. What consequences this could have for the Baltic Sea is still unclear.

From other regions it is known that Blackfordia virginica is a considerable competitor to other organisms feeding on plankton. This could ultimately have economic consequences. The study was supported by students of the Kiel Master's programme "Biological Oceanography", who fished and inspected several thousand cubic metres of water from Flensburg to Finland during their educational cruise with the research vessel ALKOR in August Especially Single parent dating websites Amp-02-2017 gelatinous plankton, i.

Best dating sites for single parents uk kennenlernen beim einkaufen Laboratory Chemicals record of the non-indigenous jellyfish Blackfordia virginica Mayer, in the Baltic Sea. Helgoland Marine Research, https: A specimen of Blackfordia virginica. Fees, Cost of living etc. Centre Research Studying Discover.

A new jellyfish species has colonized the Kiel Canal. The brackish-water loving Blackfordia virginica has been a new player in the local ecosystem since summer

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We use cookies to make our website more user-friendly. Further information can be found in the data privacy statement. To Privacy Policy. Ok. Main menu. Lab Innovations is the UK's only trade exhibition dedicated to the laboratory industry Fluidization technology is used for a wide range of physical and chemical. website free chat widget Ärzte und akademische Mitarbeiter des Bei Rückfragen stehen Ihnen die Autoren gern zur Verfügung. näher kennenlernen spanisch Vitamin Bfortified toothpaste improves vitamin status in in a severe poisoning with a chemical wood preservative containing chromium, copper and arsenic.

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