The development of the temperatures in the Ammersee make reason to worry. Dr. Bernhard Ernst is an expert on aquatic ecology and explains why.
webs/Utting – as Dr. Bernhard Ernst, twelve years ago, his doctoral thesis, wrote, turned in research papers in the areas of biology and Ecology much of the climate change. Seriously, is today’s expert in aquatic ecology, and he is a Scion of an old fishing dynasty on the Ammersee, even fishermen, as well as Chairman of the fishing cooperative Ammersee. Accordingly, full-bodied and well-founded its annual balance sheets, which he presents regularly at the fishermen’s anniversary.
Due to the Corona-crisis will be held this traditional Meeting on the day of the apostles Peter and Paul in Dießen heuer only in a reduced Form (we reported). On the subject of burning him, however, this year, on the nails, he has already published a detailed article in a professional journal. This time, it is not a cormorant, although the fishermen continues to be a thorn in the eye. This time it comes to climate change. And what Ernst has to say, sounds alarming. Because the fishermen feared that the Ecosystem will be damaged in case of further warming of the Ammer lake difficult.
Already during his doctoral work Seriously has been following the temperatures in the Ammersee. “Because you have not seen at the time, but still a lot,” he admits. “Today, with twelve years of distance, the result is, however, frightening.” Ernst has used for its study, the measured values at the Ammersee-spout in webs, and, in the last 40 years, from the Hydrological service are recorded. These values are a good measure for the upper layer of water, he says. In contrast to the temperatures of the lake inlet Bunting in the South, which has heated in the past ten years, only 0.1 degrees, the values in the webs of 2.7 degrees higher. In the past 40 years, they have warmed even twice as strong as the atmosphere of the past 80 years.
Ernst makes it clear that the lake takes in more heat than the atmosphere that surrounds the lake. The Ammersee is a buffer, the active balancing effect on the environment. What is good for the environment, but it is dramatic for the lake. While the summer offers visitors high water temperatures, devices in the Ecosystem, dangerous to falter.
Between 1980 and 2000, the temperature was in the bars only in four years, about 24 degrees, then, and to this day, it was already twelve times the case. “Our bread and fish, the whitefish, this surface area due to the temperature rise only of limited use as a habitat and pasture available,” says Ernst.
The natural whitefish occurrences do not speak currently that it is still disastrous, grants to the fishing. But no one knew how long that goes well. Would benefit in the future those species of fish whose comfort zone was about 20 degrees – these are carp, pike-perch, pike or catfish. The three giant catfish, which have passed Ernst’s fishermen colleagues Simon smoke from Dießen already this year into the grid, could have to do with it, but Seriously it can be explained rather with the phenomenon that the catfish Population increases across the whole of Bavaria. But a influence as a result of climate change could also play a role.
in the face of rising temperatures Seriously is not only a change in the fishing to come to you. Also, the circulation of the lake is in danger, believes the expert. An annual recurrent mixing of the source of power of these Ecosystems, a Reset can not be done, if sustained high temperatures to block him. And this concerns not only the fishermen but the entire Ecosystem and everything on, around and in the Ammersee lives and to do with the Ammersee have. “Climate change is not a distant Problem. As the example of lake Ammersee shows, he now and also right in front of our door-to-door for change. We must act now”, emphasized Ernst, “every Individual – in politics, in authorities, in the society as a whole, before the polar bears of the ice floes wegtauen under the feet and before the whitefish of the upper Bavarian grill plates disappear.”
