Rebuilding marine life

Geplaatst Geplaatst in onderzoek

Recovery rates across studies suggest that substantial recovery of the abundance, structure and function of marine life could be achieved by 2050 if major pressures, including climate change, are mitigated, according to a Nature Review article. >> download pdf …

Ships and air guns reduce social interactions in humpback whales

Geplaatst Geplaatst in bultrug, onderzoek

Understanding the interactions between human activity in the ocean and marine mammals is a fundamental step to developing responsible mitigation measures and informing policy. Here, the response of migrating humpback whales to vessels towing seismic air gun arrays (on or off) was quantified as a reduction in their likelihood of socially interacting. >> read more […]

Artificial light during the polar night disrupts Arctic fish and zooplankton behaviour down to 200 m depth

Geplaatst Geplaatst in onderzoek

Artificial illumination at night is increasing annually by 6% on average, thus becoming one of the fastest-spreading environmental challenges. Here we show that normal working-light from a ship may disrupt fish and zooplankton behaviour down to at least 200 m depth across an area of >0.125 km2 around the ship. >> read more …

Sonar en Spitssnuitdolfijnen: de laatste stand van zaken

Geplaatst Geplaatst in onderzoek, spitssnuitdolfijnen spec.

Sinds de jaren ’60, toen sonar zijn intrede deed bij de marine om onderzeeërs op te sporen, zijn er wereldwijd twaalf massastrandingen van spitssnuitdolfijnen bekend bij o.a. grote militaire oefeningen op zee. Sonar maakt gebruik van geluidsimpulsen om onder water te navigeren of om voorwerpen te detecteren. Dolfijnen gebruiken echolocatie, vergelijkbaar met actieve sonar, om […]