Harbour porpoises react to low levels of high frequency vessel noise

Harbour porpoises react to low levels of high frequency vessel noise

Cetaceans rely critically on sound for navigation, foraging and communication and are therefore potentially affected by increasing noise levels from human activities at sea. Shipping is the main contributor of anthropogenic noise underwater, but studies of shipping noise effects have primarily considered baleen whales due to their good hearing at low frequencies, where ships produce most noise ...

Harbour porpoises respond to climate change

The effects of climate change on marine ecosystems and in particular on marine top predators are difficult to assess due to, among other things, spatial variability, and lack of clear delineation of marine habitats. The banks of West Greenland are located in a climate sensitive area and are likely to elicit pronounced responses to oceanographic changes in the North Atlantic. The recent increase...

High density areas for harbour porpoises in Danish waters

Designating protected areas for harbour porpoises implies identifying areas of high harbour porpoise density with particular focus on the distribution in the breeding season. The aim of this report is to collate all relevant data on movements and density of the harbour porpoises in Danish and adjacent waters in order to identify areas with high density or key habitat for harbour porpoises in De...

Source of Aegean Sea harbour porpoises

Documented sightings of harbour porpoises in the Mediterranean are rare, although the species is common in the neighbouring North Atlantic and Black Sea. However, in the past 2 decades, 4 harbour porpoises Phocoena phocoena have been recorded in the northern Aegean Sea in the eastern Mediterranean Basin. Samples were taken from 2 of these. Both have a genetic signature indicative of the Black S...

Climate change causing starvation in harbour porpoises?