OpiniOn Being Frank: Dead zones are symptom of a warming planet

As first stewards on the front lines of climate change, treaty tribes have been sounding the alarm for more than a decade about low oxygen levels in the ocean and the Salish Sea.

My mentor, former Northwest Indian Fisheries Commission (NWIFC) chairman Billy Frank Jr., testified about it in 2012 before the U.S. Senate Committee on Indian Affairs:

“We have dead zones in Hood Canal, dead zones in South Puget Sound, where I live, where our salmon is migrating out to the ocean,” he said. “The ocean is important to all of us. It’s dying. Who the hell is in charge?”

It’s been more than 10 years since then and it still feels like no one is in charge. Billy was addressing the U.S. government, but climate change is a global problem that requires global leadership.

Dead zones are just one symptom of a warming planet. When wind blows surface water away from the coastline, deeper water upwells to the coastal shelf. Deep water already is lower in oxygen than the surface water, but warmer temperatures and increased nutrients drive the levels of dissolved oxygen so low that the water becomes hypoxic – suffocating marine life.

Warmer water also increases the growth of phytoplankton, which die and fall to the ocean floor, depleting oxygen as they decompose. Changes in timing, intensity and frequency of upwelling also prevent the deeper water from mixing with the surface water, which is richer in oxygen.

None of the elders from the Quinault Indian Nation remember hearing about dead zones off the coast before 2006 when we discovered more than a mile and half of beach littered with dead fish of every species.

One of our fishermen was pulling crab pots north toward Taholah. He had live crab in his pots until he crossed the Moclips River. Then it was nothing but pot after pot of dead crab for eight miles.

The 2006 hypoxic event lasted from June through October and affected more than 1,100 square miles along the Pacific coast from Washington to Oregon.

That was just the beginning. We saw more of these events in 2007, 2009 and 2011 along our beaches. In 2017, a water mass with low oxygen drove the halibut out of Quinault’s survey areas.

Our treaty rights are place-based. When climate change makes it impossible for fish and shellfish to survive in our traditional harvest areas, we lose those rights. We lose our livelihoods and the food that sustains us.

As salmon runs have declined over the past several decades, tribes have come to depend on Dungeness crab to support our economies, but dead zones threaten those fisheries. After the 2017 event, crab populations were