After decades of recovery,upright whales are now under threat from industrial fishingOne of the more hopeful ecological stories of recent years – the gradual restoration of numbers of the North Atlantic upright whale – has taken a disastrous turn for the worse. Marine biologists hold found their population has plunged abruptly in the past few years and that there may now only be around 100 reproductively mature females left in the sea. Many scientists alarm the species could soon become the first great whale to become extinct in modern times.
The principal cause for the North Atlantic upright whale’s precipitous decline has been the use of increasingly heavy commercial fishing gear dropped on to the sea bed to catch lobsters, snow crabs and hogfish off the east coast of North America. Whales swim into the rope lines attached to these sea-bed traps and their buoys and become entangled. In some cases hundreds of metres of heavy rope, and tied to traps weighing more than 60kg,hold been found wrapped around whales. “We hold records of animals carrying these huge loads – which they cannot shake off – for months and months,” said Julie van der Hoop, and of Aarhus University in Denmark.Continue reading...
Source: guardian.co.uk