UW News

Julian Olden


January 27, 2021

In Brazil, many smaller dams disrupt fish more than large hydropower projects

small dam in Brazil

A new University of Washington paper quantifies the tradeoffs between hydroelectric generation capacity and the impacts on river connectivity for thousands of current and projected future dams across Brazil. The findings confirm that small hydropower plants are far more responsible for river fragmentation than their larger counterparts due to their prevalence and distribution.


December 7, 2020

Military flights biggest cause of noise pollution on Olympic Peninsula

path through a forested area

A new University of Washington study provides the first look at how much noise pollution is impacting the Olympic Peninsula. The paper found that aircraft were audible across a large swath of the peninsula at least 20% of weekday hours, or for about one hour during a six-hour period. About 88% of all audible aircraft in the pre-pandemic study were military planes.


September 29, 2020

Aquatic hitchhikers: Using mobile technology to predict invasive species transmission

A new University of Washington study uses passive data from a fishing technology company to model the movement of anglers and predict where aquatic invasive species may be spreading.


May 8, 2019

One-third of the world’s longest rivers remain free-flowing, new analysis finds

laird river

Just over one-third of the world’s 246 longest rivers remain free-flowing, according to a new study published May 8 in Nature. Dams and reservoirs are drastically reducing the diverse benefits that healthy rivers provide to people and nature across the globe.


January 22, 2018

Small hydroelectric dams increase globally with little research, regulations

example of small hydropower

University of Washington researchers have published the first major assessment of small hydropower dams around the world — including their potential for growth — and highlight the incredibly variability in how dams of varying sizes are categorized, regulated and studied.


December 18, 2017

Fish to benefit if large dams adopt new operating approach

dam

Recognizing that many large dams are here to stay, a University of Washington team is investigating an emerging solution to help achieve freshwater conservation goals by re-envisioning the ways in which water is released by dams.


December 7, 2017

New research shows hydropower dams can be managed without an all-or-nothing choice between energy and food

A women fishes in Tonle Sap Lake in Cambodia.

The University of Washington, Arizona State University and other collaborators have proposed a method in the Dec. 8 issue of Science that allows hydroelectric dam operators to generate power in ways that protect — and possibly improve — food supplies and businesses throughout the Mekong river basin in Southeast Asia.


September 13, 2017

Climate change challenges the survival of fish across the world

john day river

  Climate change will force many amphibians, mammals and birds to move to cooler areas outside their normal ranges, provided they can find space and a clear trajectory among our urban developments and growing cities. But what are the chances for fish to survive as climate change continues to warm waters around the world? University…


February 21, 2017

Winners, losers among fish when landscape undergoes change

fish swimming underwater

A new study by the University of Washington and Simon Fraser University finds that some fish lose out while others benefit as urban and agricultural development encroaches on streams and rivers across the United States.


August 26, 2016

Interactive map shows where animals will move under climate change

animated map of U.S.

The University of Washington and The Nature Conservancy have created an animated map showing where mammals, birds and amphibians are projected to move in the Western Hemisphere in response to climate change.


September 2, 2014

Dwindling waterways challenge desert fish in warming world

One of Arizona’s largest watersheds – home to many native species of fish already threatened by extinction – is providing a grim snapshot of what could happen to watersheds and fish in arid areas around the world as climate warming occurs.