Stories with the tag: Fish
A new acoustic fish-tracking tag is so tiny it can be injected with a syringe. It’s small size enables researchers to more precisely and safely record how fish swim through dams and use that information to make dams more fish-friendly.
Release Date: 1/29/2015
A synthetic fish is helping existing hydroelectric dams and new, smaller hydro facilities become more fish-friendly.
Release Date: 11/4/2014
Killer whales and other marine mammals likely hear sonar signals more than we’ve known.
Release Date: 5/1/2014
PNNL scientists working with colleagues from Laos and Brazil – areas where huge dams are being built or planned – have published new findings on keeping fish healthy as they pass through dams and other hydropower structures.
Release Date: 4/14/2014
By adjusting water discharges in ways designed to boost salmon productivity, officials at Priest Rapids dam in central Washington were able to more than triple the numbers of juvenile salmon downstream of the dam over a 30-year period.
Release Date: 2/25/2014
Scientists have created a microbattery, just slightly larger than a long grain of rice, that packs twice the energy compared to current microbatteries used to monitor the movements of salmon through rivers in the Pacific Northwest and around the world.
Release Date: 2/17/2014
Ocean conditions such as current directions and water temperature play a huge role in determining the behavior of young migrating salmon, according to researchers who monitored the first movements of salmon as they exited the Columbia River and headed for
Release Date: 11/7/2013
A new laboratory test can help limit the injuries fish receive from loud, underwater booms created during pile driving, the practice of pounding long, hollow steel piles into the ocean floor to erect structures such as tidal energy turbines.
Release Date: 6/20/2012
PNNL scientists are examining how aquatic animals behave around electromagnetic fields similar to those expected to be created by marine power devices.
Release Date: 9/20/2010
The new Juvenile Salmon Acoustic Telemetry System more precisely tracks the migration of juvenile salmon in deep, fast-moving rivers than comparable methods, suggests a paper in the January edition of the journal Fisheries.
Release Date: 1/8/2010