Sentences with phrase «sockeye salmon fishery»

The mine proposed at the headwaters of Bristol Bay is projected to be the largest in North America, generating billions of tons of mine waste and industrializing important salmon habitat in the heart of the world's last great wild sockeye salmon fishery.

The Alaska Department of Fish and Game carefully manages the Bristol Bay sockeye salmon fishery to ensure that enough fish are allowed to escape the fishery and run up river to sustain the population.

Before pursuing my PhD, I co-produced two environmental documentaries about mining development proposed at the headwaters of the world's largest remaining sockeye salmon fishery in Alaska.

Not exact matches

Scientists at the University of Washington in Seattle's (U.W.) School of Aquatic and Fishery Sciences think they know why Bristol Bay is so productive year after year: Several hundred discrete populations of sockeye salmon inhabit the network of rivers and lakes that empty into the bay, and this tremendous population diversity buffers the entire fishery against the vicissitudes of the environment.

For at least 50 years Alaska's Bristol Bay has been one of the most valuable fisheries in the U.S.. On average, fishermen net about 25 million sockeye salmon annually in the bay's chilly waters.

«The message is pretty clear that these sockeye salmon are highly adapted to the energetic demands of their upstream migration,» says Brian Riddell, a fisheries scientist who heads the Pacific Salmon Foundation in Vancouver.

The conservation status of sockeye populations in Canada is under review by Fisheries and Oceans Canada as part of its Wild Salmon Policy strategy to standardize monitoring of wild salmon status.

For example, reductions in seasonal sea ice cover and higher surface temperatures may open up new habitat in polar regions for some important fish species, such as cod, herring, and pollock.128 However, continued presence of cold bottom - water temperatures on the Alaskan continental shelf could limit northward migration into the northern Bering Sea and Chukchi Sea off northwestern Alaska.129, 130 In addition, warming may cause reductions in the abundance of some species, such as pollock, in their current ranges in the Bering Sea131and reduce the health of juvenile sockeye salmon, potentially resulting in decreased overwinter survival.132 If ocean warming continues, it is unlikely that current fishing pressure on pollock can be sustained.133 Higher temperatures are also likely to increase the frequency of early Chinook salmon migrations, making management of the fishery by multiple user groups more challenging.134