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COVID 19- Canceling WDC Travel, Not Momentum

COVID 19- Canceling WDC Travel, Not Momentum

I am writing this on the evening of Tuesday March 10th, just hours after the...
How we’re tackling whaling in Norway

How we’re tackling whaling in Norway

We’re helping to spearhead a campaign – supported by an international coalition of almost 40...
Record breaker Riptide the orca swims from Iceland to Lebanon

Record breaker Riptide the orca swims from Iceland to Lebanon

A male orca, commonly known as Riptide, has been spotted in waters around Beirut, Lebanon,...
How do you thank someone who has changed your life?

How do you thank someone who has changed your life?

*This is the third part of a three-part blog series. You can read the first...

Humpback Whale's change their Song in Response to an Noise Source 200 km Away

PLoSOne reports that Sounds made by technology used to monitor fish stocks may affect how baleen whales communicate, even at great distances.

Marine biologists working in US waters noticed that humpback whales sang less during the fall/autumn of 2006, when a low frequency signal showed up in their recordings. They eventually traced the signal to some acoustic sensing equipment that was part of a scientific study off Maine’s coast, about 120 miles from where they were studying seasonal changes in whale songs in Georges Bank.

The scientists recorded more frequent whale vocalizations during the same time of year in 2008 and 2009, when the study’s Ocean Acoustic Waveguide Remote Sensing equipment was not being used. This suggests the whales reacted to the low-level sounds by silencing their songs.

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0029741

Risch D, Corkeron PJ, Ellison WT, Van Parijs SM (2012) Changes in Humpback Whale Song Occurrence in Response to an Acoustic Source 200 km Away. PLoS ONE 7(1): e29741. doi:10.1371/journal.pone.0029741