Science Spotlights
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Morphodynamic evolution following sediment release from the world’s largest dam removal
Removal of two mainstem dams on the Elwha River in Washington State is the world’s largest river restoration project and a unique natural experiment…
Genetic diversity of introduced Chinook salmon in Chile
Although multiple independent introduction events of Chinook salmon have occurred in many parts of the world, it is unknown which have led to self-sustaining populations…
Demographic structure of Chinook populations is shifting
Analysis of several long-term time-series datasets indicates that the age–size class structure of many Chinook salmon populations has changed over the past several decades, with salmon becoming on average both smaller and younger…
Thermal tolerance of embryonic Chinook salmon may be lower than lab experiments predict
Retrospective testing of a lab-fitted model against long-term field data revealed that lab experiments consistently overestimated the maximal thermal tolerance of embryonic Chinook salmon in natural settings…
Diversifying fisheries portfolios stabilizes fishing communities
Many coastal fishing communities the world over focus their fishing efforts on a small number of target species without explicitly maintaining capacity to take advantage of other potential marine resources…
Beaver engineering improves salmon habitat
Rebounding beaver populations are re-engineering some rivers, allowing recovery of some of the lost habitat features important for stream-rearing fish…
What are the net benefits of salmon enhancement programs?
Enhancement of salmon stocks with hatchery-raised individuals is often used as a means of restoring depleted populations or supplementing healthy ones, but studies of its effectiveness have produced mixed results…
Is shifting climate driving changes in salmon population dynamics?
Prevailing ocean conditions in the North Pacific are highly influenced by complex interactions between various meteorological phenomena expressed across vast spatial scales…
Impacts of the North Pacific Current on salmon productivity
The North Pacific Current (NPC) traverses the Pacific Ocean in an easterly direction, bifurcating into the Alaska and California currents as it nears the west coast of North America…
Pink salmon competition influences productivity of sockeye salmon
Sockeye salmon productivity in the North Pacific has been trending downward for several decades…
Impacts of flood size on salmon spawning habitat in Southeast Alaska
Changes in global climate systems are expected to result in increased rates of precipitation in many areas; in Alaska, precipitation rates are projected to rise by as much as 30% by century’s end…