Posts Tagged ‘humpback’

Humpbacks and herring

Friday, February 12th, 2010

One of the nicest things about keeping this particular blog is that I occasionally come across the names of folks that I worked with in the past. I already mentioned my sighting of Adam Frankel in this post. Today I caught cybersight of Jan Straley, a biologist at the University of Alaska Southeast, and another fellow whale researcher from the good old days.

Jan has been in Sitka since at least the 1980s, when I first met her, studying the humpbacks and other marine mammals that travel through Southeast Alaska. I remember her as an expert on the population structure and overwintering behavior of humpbacks in that region. It’s nice to know that she is still continuing in that vein. According to this recent Washington Post article, Jan thinks that the recovery of humpback whales, a species once hunted to near extinction, is impeding the recovery of the herring population in Prince William Sound.
herring

The herring took a major hit as a result of the Exxon Valdez spill in 1989. Their numbers have not yet returned to pre-spill abundance, and researchers want to know why. Humpbacks are only one of the suspects in this modern-day ocean mystery. I for one am glad to know that reliable researchers are teasing out the data. Important work, this. And I do enjoy vicariously catching up with the old whale folks of yore.

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HIHWNMS – more than a mouthful

Monday, December 21st, 2009

It stands for Hawaiian Islands Humpback Whale National Marine Sanctuary, and it’s a government agency under NOAA, the National Oceanic and Atmospheric Association. NOAA is, by the way, one of my all-time favorite government organizations, so don’t put it down, okay?

The sanctuary was established in 1992 to protect humpbies and their habitat in Hawaii. It currently seeks to fill sixteen—16!—seats on their Advisory Council. That’s eight primary seats and eight alternate seats. If I still lived in Hawaii I would definitely apply, but since I’m about 5,000 miles (8,000 km, or 4320 nautical miles) away, I’m going to leave these vacancies to those who are more geographically desirable. If you fit that bill and are interested in advising the HIHWNMS, visit this page immediately.

Applications are due by 31 January 2010.

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What do birds have to do with it?

Sunday, December 20th, 2009

Once upon a time, I studied humpback whales. My old research buddy, Adam Frankel, still does. Specifically, he is still studying whale song. I know this not because he told me, but because I just came across a Science News article with a quote from him. Quotes Adam,

[Danielle Cholewiak, a researcher for the Stellwagen Bank National Marine Sanctuary based in Massachusettes,] "showed short-term acoustic interactions between males—that was the new thing."

This "new thing" is the finding that male humpbacks may respond to the vocalizations of other male humpbacks by changing their song. Which means that the old postulation about the purpose of whale song being advertisment for virility (i.e., reproductive fitness) is one line of evidence closer to validation.

What birds have to do with it is the fact that humpback song and bird song share similar characteristics. Their songs all have repeated notes, called phrases, which are arranged in themes. Bird researchers have been able to correlate song patterns with specific behaviors. Not so with whales. Still, borrowing the methodologies used by bird researchers has proven helpful in cracking the whale song enigma.

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