http://dfg-science-tv.de/en/ Whether they arrive as stowaways aboard ships, are abandoned from aquariums, or even deliberately introduced, more and more foreign animal species are arriving in German waterways from around the world. The result is that exotic animals that have almost no natural enemies are threatening native species. Researchers are studying this phenomenon, taking Lake Constance as an example to find out how the ecosystem is affected by the new arrivals. en Tue, 01 Jul 2008 00:00:00 +0100 Tue, 01 Jul 2008 00:00:00 +0100 http://dfg-science-tv.de/en/ http://www.dfg-science-tv.de/bilder/logo_dfg_sciencetv_rss.gif http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-07-01 Episode: 01.07.2008 - Who would have guessed: The native freshwater shrimp is able to outlive the killer shrimp. In addition to other factors, the bitterly cold water in Lake Constance causes the invasive killer shrimp to lose its appetite.... Tue, 01 Jul 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-07-01 Who would have guessed: The native freshwater shrimp is able to outlive the killer shrimp. In addition to other factors, the bitterly cold water in Lake Constance causes the invasive killer shrimp to lose its appetite.... ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-24 Episode: 24.06.2008 - Is the native freshwater shrimp doomed? Today the researchers are taking their final samples from the lake. The wind and the currents are ideal for the dive. They’re finished in an hour: all the samples have been collected.... Tue, 24 Jun 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-24 Is the native freshwater shrimp doomed? Today the researchers are taking their final samples from the lake. The wind and the currents are ideal for the dive. They’re finished in an hour: all the samples have been collected.... ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-17 Episode: 17.06.2008 - It’s time for the final dive, and there are strong winds forecast for today. The researchers decide to risk it. Underwater there is a strong current; Stefan Werner and John Hesselschwerdt can barely hold their position.... Tue, 17 Jun 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-17 It’s time for the final dive, and there are strong winds forecast for today. The researchers decide to risk it. Underwater there is a strong current; Stefan Werner and John Hesselschwerdt can barely hold their position.... ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-10 Episode: 10.06.2008 - As scientific divers, John and Stefan are also interested in the lake’s past. Today they are going to visit an archaeological dig at the Orkopf. Tue, 10 Jun 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-10 As scientific divers, John and Stefan are also interested in the lake’s past. Today they are going to visit an archaeological dig at the Orkopf. ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-03 Episode: 03.06.2008 - Do the native freshwater shrimp stand a chance against the killer shrimp? If so, what is their survival strategy? John starts a new experiment. Tue, 03 Jun 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-06-03 Do the native freshwater shrimp stand a chance against the killer shrimp? If so, what is their survival strategy? John starts a new experiment. ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-27 Episode: 27.05.2008 - Today, John and Stefan are going out to the experimental plots for the second time, to take stock of the native shrimp and the invaders half way through the experiment. Tue, 27 May 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-27 Today, John and Stefan are going out to the experimental plots for the second time, to take stock of the native shrimp and the invaders half way through the experiment. ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-20 Episode: 20.05.2008 - Coots, diving ducks and Dikerogammarus villosus share one thing in common: they all love zebra mussels. The more mussel eaters there are on Lake Constance, the faster the habitat for the "killer shrimp" shrinks. Tue, 20 May 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-20 Coots, diving ducks and Dikerogammarus villosus share one thing in common: they all love zebra mussels. The more mussel eaters there are on Lake Constance, the faster the habitat for the "killer shrimp" shrinks. ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-13 Episode: 13.05.2008 - Back in the lab the researchers have still got their work cut out. They need to evaluate the samples they collected, and that means counting. Tue, 13 May 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-13 Back in the lab the researchers have still got their work cut out. They need to evaluate the samples they collected, and that means counting. ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-06 Episode: 06.05.2008 - The first stage was successful: The samples that the researchers brought back from their dive are densely populated with mussels, the preferred habitat of the killer shrimp. Now it’s time for the laborious work.... Tue, 06 May 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-05-06 The first stage was successful: The samples that the researchers brought back from their dive are densely populated with mussels, the preferred habitat of the killer shrimp. Now it’s time for the laborious work.... ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-04-29 Episode: 29.04.2008 - The researchers heave hundreds of kilos of equipment, including diving gear, tubes, buckets and an underwater suction sampler, onto their research boat. Today they want to find out how many mussels and shrimp currently live in Lake Constance.... Tue, 29 Apr 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-04-29 The researchers heave hundreds of kilos of equipment, including diving gear, tubes, buckets and an underwater suction sampler, onto their research boat. Today they want to find out how many mussels and shrimp currently live in Lake Constance.... ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-04-22 Episode: 22.04.2008 - The experiment begins. Today John Hesselschwerdt and Stefan Werner are going to position experimental cages on the lake bed. Tue, 22 Apr 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-04-22 The experiment begins. Today John Hesselschwerdt and Stefan Werner are going to position experimental cages on the lake bed. ]]> http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-04-15 Episode: 15.04.2008 - The habitat of Lake Constance: The amphipod Dikerogammarus villosus recently arrived from the Black Sea region. Its voracious hunger has led to it becoming known as the "killer shrimp". Tue, 15 Apr 2008 00:00:00 +0100 http://www.dfg-science-tv.de/en/projects/an-animal-invasion/2008-04-15 The habitat of Lake Constance: The amphipod Dikerogammarus villosus recently arrived from the Black Sea region. Its voracious hunger has led to it becoming known as the "killer shrimp". ]]>