By studying the so-called mean temperature of restaurant seafood, scientists have shown how the species that fill our plates have changed with time.
Fraser River, the city overlooks Vancouver Island to the west, and beyond that, the open Pacific Ocean. Long before it had a skyline or a deepwater port, this was a bountiful fishing ground for the Musqueam, Squamish, and Tsleil-Waututh peoples, who still depend on its waters for cultural and spiritual sustenance as much as for food. Today, tourists come from all over the world to taste local favorites like salmon and halibut fresh from the water. But beneath these waves, things are changing.
“Many people, especially in Vancouver, go out to restaurants and enjoy seafood, so we wanted to see whether climate change has affected the seafood that the restaurants serve,” Cheung says. One restaurant that became an important data point in the study was the historic Hotel Vancouver and its restaurant Notch8, a 10-minute walk from the harbor’s edge in the city’s financial district. The researchers were able to find examples of the hotel’s menus from the 1950s, ’60s, ’80s, ’90s, and today.
While a chef does consider peoples’ dietary preferences, a menu is also a reflection of what’s swimming nearby. Baarschers says that when he and the restaurant staff are deciding what seafood to order, they have to strike a balance between availability and customer taste. “We usually have conversations with our suppliers,” Baarschers explains.
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