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Posts Tagged ‘Pacific Ocean’

Turning a Highway into a Park

Posted in Uncategorized, tagged , , , , , , , , , , on March 2, 2026| 4 Comments »

Photo: Jack Persons, Friends of Sunset Dunes.
Once a four-lane highway threatened by flooding, Sunset Dunes Park now welcomes visitors who fancy recreation along the Pacific coast.

Many of us have had a chance to enjoy the elevated park in New York City known as the High Line. Once it was a highway. Now I’m learning about a similar conversion in California.

There’s an interesting story about it at the environmental radio show Living on Earth,

Jenni Doering
“The four-lane Great Highway used to run along the Pacific Ocean on the west side of San Francisco. But in April 2025, this pavement became a little slice of paradise. Now visitors to Sunset Dunes Park can bike, walk, skate, and play next to the water. Zach Lipton is a volunteer with the nonprofit Friends of Sunset Dunes and he joins us now to talk about this highway’s transformation. … For someone who’s maybe never been to San Francisco or to Sunset Dunes Park … what is it like?

Zach Lipton
“Sunset Dunes is a 50 acre park at the edge of San Francisco along the Pacific coast. It used to be a four lane highway and has been converted into a recreational space for people to walk and bike and sit by the ocean, have a bite to eat and just enjoy our Pacific coast. So we brought in eleven local artists to paint murals. … The city has installed benches made out of logs that have fallen in recent storms from the park … a bike park and a skate area. … And of course, just the Pacific Ocean View is the star of the show. …

“[There’s a sculpture] called Spinning Rock. It’s a 20,000 pound rock that is on a spinner. And just the look of delight when kids and adults, when everyone realizes you can just push this rock and start spinning it around. It’s a lot of fun. We have a giant octopus the kids love to climb on, some giraffes down by the zoo. [The park] is a perfectly flat space, which is great for people, especially riding bikes. I know folks who have come out, learned to ride a bike there during the pandemic as an adult, using Sunset Dunes. …

Doering
“Going from a four lane roadway to a coastal park, how exactly did we get here?

Lipton
“So let’s go back all the way to just give you the long version of the history. The entire western side of San Francisco originally was just sand dunes, and in the 1800s some folks started creating a coastal path back when a road really was a recreational facility. This was a place to go ride your horse along the ocean. In time, that road was paved, but it always, for over a century, has been part of the city’s Recreation and Parks Department, even though gradually, it kept shifting from a recreational use to really just transportation. … Then during the pandemic, there was a huge need in San Francisco for socially distanced outdoor recreation, and the city converted a couple of streets to recreational facilities, including what was the Great Highway. …

“Ultimately, we ran a campaign, a ballot measure last November for the city to vote on its future. 55% of the city voted that they wanted it to be a full time park. And then we worked quickly with the city, with the California Coastal Commission, to make that vision a reality and start its transformation. …

“The park sells itself more than we can ever explain its benefits to people. And this is something where if a few years ago, you said, ‘y”Yeah, let’s turn the Great Highway into a park,’ people would look at you like you were crazy. But having tried it during the pandemic, and having just had the chance for people to experience it, all of a sudden, it makes a lot more sense. And I think there’s a spirit of experimentation there that cities can embrace, whether it’s this or other environmental efforts, that it’s okay to just try things and see how they go.”

Can you think of other pandemic experiments that have lasted? I’m going to be thinking about that.

More at LOE, here. No firewall.

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Whale-Song Network

Posted in Uncategorized, tagged , , , , , on October 10, 2022| 11 Comments »

Photo: Todd Cravens via Unsplash.
Some whales “pass their songs across oceans,” says the New York Times. Humpback whales have been studied the most extensively, but other species of whales also sing complex songs.

Although we are surrounded by ocean, I fear that we rarely give much thought to how really extraordinary the ocean is and how many wonders dwell there. Today’s story is about whales that share their song lists around the world.

Carl Zimmer writes at the New York Times, “In a study published [in August], scientists found that humpback songs easily spread from one population to another across the Pacific Ocean. It can take just a couple of years for a song to move several thousand miles.

“Ellen Garland, a marine biologist at the University of St. Andrews in Scotland and an author of the study, said she was shocked to find whales in Australia passing their songs to others in French Polynesia, which in turn gave songs to whales in Ecuador.

“ ‘Half the globe is now vocally connected for whales,’ she said. ‘And that’s insane.’

“It’s even possible that the songs travel around the entire Southern Hemisphere. Preliminary studies by other scientists are revealing whales in the Atlantic Ocean picking up songs from whales in the eastern Pacific.

“Each population of humpback whales spends the winter in the same breeding grounds. The males there sing loud underwater songs that can last up to half an hour. Males in the same breeding ground sing a nearly identical tune. And from one year to the next, the population’s song gradually evolves into a new melody.

“Dr. Garland and other researchers have uncovered a complex, language-like structure in these songs.

The whales combine short sounds, which scientists call units, into phrases. They then combine the phrases into themes. And each song is made of several themes.

“Male humpbacks sometimes change a unit in their song. Sometimes they add a new phrase or chop out a theme. The other males may then copy it. These embellishments cause the population’s song to gradually evolve, resulting in drastically different melodies from one population to the next.

“Michael Noad, a marine biologist at the University of Queensland, discovered that a population’s song can sometimes make a sudden, dramatic change. In 1996, he and his colleagues noticed that a male on the east coast of Australia had given up the local song and was now singing a tune that matched one previously sung on the west coast of the country.

“Within two years, all of the males on the east coast were singing that song. Dr. Noad’s landmark study was the first to discover this kind of cultural revolution in any animal species.

“Dr. Garland … wondered if their songs were spreading farther east across the Pacific. An opportunity to find out arrived when Judith Denkinger and Javier Oña, marine biologists at the University of San Francisco de Quito in Ecuador, offered to collaborate. They study humpback whales that breed on the coast of Ecuador.

“For their new study, Ms. Denkinger and Mr. Oña recorded humpback whales from 2016 to 2018. Over the same period, Michael Poole, a marine biologist at the Marine Mammal Research Program on the French Polynesian island of Moorea, recorded whales there. …

“In 2016 and 2017, the two populations of whales had clearly distinct songs. But in 2018, a revolution happened: The whales in Ecuador were putting French Polynesian themes in their songs. The scientists reported their findings [in] the journal Royal Society Open Science.

“Elena Schall, a postdoctoral researcher at the Alfred Wegener Institute in Bremerhaven, Germany, who was not involved in the study, said that she is seeing some similar patterns in the Atlantic Ocean. Humpback whales off the coast of Brazil and South Africa are picking up themes previously recorded off the coast of Ecuador.

“It is conceivable, Dr. Schall said, that songs flow all the way around the Southern Hemisphere. ‘It’s possible, but there’s a data gap in the Indian Ocean,’ she said. ‘I think that will definitely be the next step, if we can find enough data.’ “

More at the Times, here. Amazing to think that whales in one part of the world can “cover” the songs of whales thousands of miles away.

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