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sonar does disturb whales


Wind farms blamed for stranding of whales?

Environmentalists have blamed submarines' sonar and a ground-breaking study has confirmed that sonar does disturb the navigation of whales but it has suggested that offshore wind farms, as well as oil rigs, and even passing ships, posed an even greater threat.Scientists at the University of St Andrews studying beaked whales, a species that frequently becomes beached in Britain, concluded that they were extraordinarily timid creatures that were scared "by virtually anything unusual", despite being the size of a rhinoceros and weighing the same as a London bus.
The findings suggest that more strandings can be expected as ministers are planning a major expansion in the number of offshore wind farms, especially off the coast of Scotland, which is an area where whales congregate to feed.

In an attempt to gauge the effect of different noises on beaked whales, scientists played sonar sounds to whales in the wild and tracked their responses using an electronic tag attached to the mammals.

The tag measured all the sounds heard by the whales and their subsequent swimming movements.

Prof Ian Boyd, the project's chief scientist, said: "There has always been an association with sonar and the stranding of beaked whales, but now we really have proof this is the case.

"The sonar sounds that are used in naval anti-submarine exercises to detect submarines probably makes the beaked whales 'get herded' and pushed ashore. "But, maybe even more importantly, we have discovered that beaked whales are scared by virtually anything unusual.

"He said other sounds were more dangerous than sonars because they could be heard constantly. This might affect the feeding and reproductive cycles of whales.

"The general levels of sound that humans make in the ocean from all sorts of sources like ships, oil and gas exploration and renewable energy may be a much more serious problem for beaked whales and some other sensitive species," he said. The research showed the whales were much more responsive to lower levels of sonar than previously thought, and that they moved quickly to avoid the sound.

Prof Boyd concluded that in some unusual circumstances they are unable to escape the area, become confused and disorientated and end up stranded.

Although the beaked whales in the trial had heard sonar before, they were still frightened by it and did not appear to have developed any form of "immunity".

Now the link between noise pollution and strandings has been proven, he said he hoped new, quieter ships could be designed and their sonar could be switched off when not in use.

About a dozen whales – usually beaked or sperm whales – become stranded in Britain every year.

The Hebridean Whale and Dolphin Trust, a charity that monitors whales off the Scottish coast, branded the report "crucial" and said scientists were only now beginning to appreciate the mammals' sensitivity to noise. A spokesman said she was concerned about "loud or persistent" sounds being added to the seas every year in the form of more ships and wind farms.

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Was wir sind  

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Die Verleumdungsversuche aus den Reihen der Windenergie-Profiteure werden auch durch ständige Wiederholung nicht wahrer: - frei von Lobbyeinflüssen, Subventionen, Sponsoring und Ideologien




Verwandte Beiträge  


Man sollte immer auf alte Männer hören  

  • Es gibt kein Verbrechen, keinen Kniff, keinen Trick, keinen Schwindel, kein Laster, das nicht von Geheimhaltung lebt. Bringt diese Heimlichkeiten ans Tageslicht, beschreibt sie, macht sie vor aller Augen lächerlich, und früher oder später wird die öffentliche Meinung sie hinwegfegen. Bekanntmachung allein genügt vielleicht nicht; aber es ist das einzige Mittel, ohne das alle anderen versagen.

    Josef Pulitzer (1847 - 1911)

  • „Zuerst ignorieren sie dich,
    dann lachen sie über dich,
    dann bekämpfen sie dich und dann gewinnst du.“
    Mahatma Gandhi (1869 - 1948)

  • Wilhelm Busch (1832 - 1908)Aus der Mühle schaut der Müller, Der so gerne mahlen will.
    Stiller wird der Wind und stiller, Und die Mühle stehet still.
    So gehts immer, wie ich finde,
    Rief der Müller voller Zorn.
    Hat man Korn, so fehlts am Winde, Hat man Wind, so fehlt das Korn.

    Wilhelm Busch (1832 - 1908)





„Alternative Energiegewinnung ist unsinnig, wenn sie genau das zerstört, was man eigentlich durch sie bewahren will: Die Natur“

Reinhold Messner, 2002

"Der Ausbau regenerativer Energien kommt vor Umweltschutz"

Winfried Kretschmann, grüner Ministerpräsident von Baden-Württemberg, auf der Verbandsversammlung des Gemeindetages in BW

"Ihr müsst schon sehr gute Argumente liefern, wenn wir sie nicht bei euch vor die Haustür setzen sollen. Dann bauen wir sie woanders hin. Aber bauen werden wir sie. Warum? Weil das Gemeinwohl es gebietet."

Winfried Kretschmann (MP Baden-Württemberg) über seine Windwahnphantasien

"Eines Tages wird der Mensch den Lärm genauso bekämpfen müssen wie Cholera und Pest."

Robert Koch (1843-1910)

"Ich bin für Naturschutz und Energiewende verantwortlich und kann deshalb klar sagen, dass die Energiewende nicht am Naturschutz scheitern wird."

Robert Habeck, Energiewendeminister S-H am 20.08.2012 im WELT-Interview

"Man has the fundamental right to freedom, equality and adequate conditions of life, in an environment of a quality that permits a life of dignity and well-being, and he bears a solemn responsibility to protect and improve the environment for present and future generations."

Declaration of the UN Conference on the Human Environment

"Früher war Energiearmut ein Randphänomen, mittlerweile ist es ein Alltagsproblem."

Volker Hatje, Elmshorner Stadtrat

For us, the world was full of beauty; for the other, it was a place to be endured until he went to another world. But we were wise. We knew that man's heart, away from nature, becomes hard.

Chief Luther Standing Bear (1868-1939)


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