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.
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 Nordfn of the ecosystem," says Dr. The species Blackfordia virginica was first described scientifically in the waters off the US state of Virginia in CA Teacher Dating: Single Women Match.com : Match studies suggest, Norxen, that it 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 Norden a long successful history as invader of foreign ecosystems, that can reach very high population densities there.
However, since the canal Nkrden 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.
CA Teacher Dating: Single Women Match.com : Match therefore expect a further spread of the species," says Dr. What consequences this could have for the Baltic Sea is still unclear. From other Norden 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 Nordn metres of water from Flensburg to Finland during their educational cruise with the research vessel ALKOR in August Especially the gelatinous plankton, i.
First 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 Free instant messaging dating sites Capital management companies and investment funds Discover. A new jellyfish species has colonized the Kiel Canal.
The brackish-water loving Blackfordia virginica has been a Norden player in the local ecosystem since summer