Salmon in trouble
Posted: Mon Oct 09, 2017 7:02 am
https://www.seattletimes.com/seattle-ne ... -122552821
Surveys off Washington’s coast detected low numbers of juvenile salmon from the Columbia River, including spring chinook, a bad omen for orcas and other species that rely on the king of fish.
Surveys off Washington’s coast detected low numbers of juvenile salmon from the Columbia River, including spring chinook, a bad omen for orcas and other species that rely on the king of fish.
Scientists have been hauling survey nets through the ocean off the coasts of Washington and Oregon for 20 years. But this is the first time some have come up empty.
“We were really worrying if there was something wrong with our equipment,” said David Huff, estuarine and ocean ecology program manager in the fish ecology division at NOAA Fisheries. “We have never hauled that net through the water looking for salmon or forage fish and not gotten a single salmon. Three times we pulled that net up, and there was not a thing in it. We looked at each other, like, ‘this is really different than anything we have ever seen.’
“It was alarming.”
“Every year is different. But this year popped out as being really different,” said Brian Burke, a research fisheries biologist based at the NW Fisheries Science Center in Montlake. “Not just a bunch of normal metrics that point to a bad ocean year, but the presence of these things we have never seen before, really big changes in the ecosystem. Something really big has shifted here.”
It’s not a short-term problem.