As king salmon decline in the Bristol Bay region, changes to king salmon harvest include reduced bag limits, area closures, as well as the introduction of youth-only fisheries in the Naknek River.

Researchers say climate change is playing a big role in the collapse, which has left thousands of people along the river without the salmon they depend on. 

A petition to list king salmon as endangered in Alaska faces opposition due to concerns about its impact on local fisheries and management practices.

Knik Tribe officials have found very high levels of the toxin which causes paralytic shellfish poisoning in samples from Southern Alaska mussels and clams — but they warn that parts of some fish, including king salmon, may also contain the toxin

When Kodiak Island's elderberries started ripening earlier, its iconic bears changed their diet. It's another ecological shift amid climate change, scientists say.

Canada and Alaska have agreed to a seven-year fishing moratorium on Yukon River chinook salmon to aid the species' recovery, following years of declining numbers.