Pacific marine heatwave upended Steller sea lion winter diets

Exposing the Big Game's avatarThe Extinction Chronicles

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FastCast digital daily headlines for Friday, April 21, 2023.

https://www.alaskasnewssource.com/2023/04/22/pacific-marine-heatwave-upended-steller-sea-lion-winter-diets/

ByNolin Ainsworth

Published:Apr. 21, 2023 at 8:25 PM PDT

SEWARD, Alaska (KTUU) – Steller sea lions aren’t the easiest mammals for scientists to monitor. Rookeries are often on remote rocky outposts like Chiswell Island near Resurrection Bay, where remote monitoring cameras were set up about 25 years ago to study the marine mammals’ population trends.

But the cameras only go so far when it comes to researching marine mammals like Steller sea lions.

A recent study authored by Alaska SeaLife Center scientist John Maniscalco in the journal “Global Ecology and Conservation” studied Steller sea lions up close. By examining the scat remains of the creatures during and after the Pacific marine heatwave of the mid-2010s, Maniscalco found that the heatwave had…

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