Study looks at hybridization of trout in Northern Rocky Mountains
Global warming is intensifying the hybridization of native and non-native trout in the northern Rocky Mountains, according to a new study from the U.S. Geological Survey and other scientists. The trend is a serious threat to the biodiversity of Rocky Mountain aquatic ecosystems, says the study published in the journal Global Change Biology.
A short photographic stroll through a city that consistently ranks near the very top worldwide for quality of life. Vienna’s coffee houses and parks are definitely part of its charms, but it’s also a European hub science, culture, literature and tech innovation. And there are connections to my old stomping grounds in Colorado. For example, I spent several years following the story of how parasitic whirling disease wiped out most of Colorado’s rainbows, and how biologists were working to restore the popular game fish with a population resistant to the disease. Then last summer, as I was working on a story about a massive fish die-off in the Yellowstone River, my research led me to an Egyptian-born research scientist at the University of Vienna who has been studying various parasitic trout diseases, and linking them with global warming. Turns out that Mansour El-Matbouli also was an instrumental figure in the efforts to breed the strain of rainbow trout that are resistant to whirling disease, and that he had worked closely with aquatic biologists in Colorado that I also had interviewed for my stories in Colorado. We’re facing global environmental challenges, and they require a global and science-based response. It’s a small world.
U.S. Geological Survey scientists have completed one of the first experimental studies to explore links between climate change and invasive species, specifically how brook trout and brown trout interact with rising stream temperatures. They found that non-native browns limit the ability of brook trout to use warmer water temperatures, By contrast, removin of browns brook trouts’ reach into warmer waters.
Historic UK mining contamination has cut genetic diversity of brown trout
FRISCO — In a study that has implications for Colorado rivers and fish, scientists in the UK have shown that heavy metal pollution from mining has dramatically reduced genetic diversity of brown trout.
SUMMIT COUNTY — There’s no better way to start the summer than by wetting a line in one of Colorado’s sparkling streams or lakes, and to celebrate the start of the angling season, Colorado Parks and Wildlife is once again offering free fishing this weekend (June 1-2).
Each year, the agency designates the first weekend in June as the only two-day period that anglers all around the state are not required to have a fishing license. For the rest of the year a fishing license is required for anyone 16 years and older. Check all the Colorado Parks and Wildlife fishing online here and check out this guide for popular Summit County fishing spots here. Continue reading “It’s free fishing weekend in Colorado”→
An exclusive Summit Voice interview with Fraser Trout, a homeless fish seeking some love (and water) in the Colorado River Basin
By Summit Voice
SUMMIT COUNTY — The Defend the Colorado coalition’s new video, “Trout in Trouble,” features a lost-looking trout leaving his dried-up streambed in the Fraser Valley to go seek water in the big city of Denver, where he panhandles on the streets with a sign reading, “Anything helps.” A passing motorist gives him a bottle of water that he sprinkles over his head, but the expression on his face tells us it’s not enough. The video’s message: Denver Water needs to do more to protect the Fraser River from future diversions to the Front Range.
The “homeless trout’s” performance has been hailed for its authenticity and raw power, with Denver’s Westword calling the film reminiscent of Chaplin and Capra. Others have compared the trout to a young Brando.