U.S. authorities on Friday gave wildlife managers in Washington, Oregon and Idaho permission to start killing hundreds of sea lions in the Columbia River basin in hopes of helping struggling salmon and steelhead trout.
Ecology
Aug 15, 2020
3
45
Populations of migratory river fish collapsed by 76 percent on average in the last 50 years, according to a report by conservation groups Tuesday, warning the "catastrophic" declines could impact people and ecosystems around ...
Ecology
Jul 28, 2020
0
397
Fishery collapses can be difficult to forecast and prevent due to hyperstability, a phenomenon where catch rates remain high even as fish abundance declines. In a recent Canadian Journal of Fisheries and Aquatic Sciences ...
Ecology
Apr 30, 2020
0
7
Researchers from Basel have identified the genetic basis of rapid adaptation using a native fish species. They compared threespine stickleback fish from different habitats in the Lake Constance region. Their study reveals ...
Plants & Animals
Apr 27, 2020
2
328
Rising carbon dioxide in the atmosphere and the consequent changes created through ocean acidification will cause severe ecosystem effects, impacting reef-forming habitats and the associated fish, according to new research.
Environment
Apr 20, 2020
0
295
A series of interactive maps published on the Mid-Atlantic Ocean Data Portal illustrates the shifts that have taken place over the last five decades by several commercially and recreationally important fish species living ...
Ecology
Mar 31, 2020
0
17
Sometimes referred to as the "the Methuselah of freshwater fish," sturgeons and their close relatives are very old from an evolutionary point of view. Fossils indicate that sturgeons date back 250 million years and have changed ...
Plants & Animals
Mar 30, 2020
0
1719
Wetlands, floodplains and aquatic habitats are some of Utah's most important ecosystems. They are home to many bird, plant and fish species, and they provide unique outdoor recreation opportunities.
Environment
Mar 4, 2020
0
8
Planned hydropower dams will greatly increase threats for freshwater fish species because of habitat fragmentation, especially in the tropics. This was already suspected, but environmental researchers at Radboud University, ...
Ecology
Feb 3, 2020
0
102
The manipulation of rivers in California is jeopardizing the resilience of native Chinook salmon. It compresses their migration timing to the point that they crowd their habitats. They may miss the best window for entering ...
Ecology
Dec 13, 2019
0
28
