Bugs offer clues on #AnimasRiver health — #Colorado @TroutUnlimited

Macro Invertebrates via Little Pend Oreille Wildlife Refuge Water Quality Research
Macro Invertebrates via Little Pend Oreille Wildlife Refuge Water Quality Research

From Colorado Trout Unlimited (Randy Scholfield):

If you want some good clues about river health, check out the bug life.

Trout Unlimited, Mountain Studies Institute and partners today announced plans for a multi-year monitoring of the Animas River in southwest Colorado to gauge the overall health of the Animas River and whether the Gold King Mine spill in 2015 is impacting aquatic health in the world-class trout waters through Durango.

“We’re lucky that our community’s Gold Medal trout fishery wasn’t immediately damaged by the Gold King spill,” said Ty Churchwell, TU’s San Juan Mountains coordinator, in a release. “But long-term, it’s unclear what the effects of the spill might be. Trout Unlimited wants to make sure the aquatic health of the river—and specifically, its bug life—is closely monitored in coming months and years.”

Why look at bugs? Scott Roberts, aquatic biologist with MSI, pointed out that aquatic macroinvertebrate orders—such as mayflies, caddis and stoneflies—provide the foundation of the aquatic food chain, not just for trout but for a range of wildlife, from birds to mammals.

“Aquatic bugs are widely considered an excellent indicator of water quality,” said Roberts. “That’s because they live in the water column as well as river sediment. We’re going to learn a lot by seeing which bugs are doing well and which aren’t.”

Salmonflies (Pteronarcys), for instance, are present in the lower Animas watershed—a good sign because they are considered sensitive to pollution.

TU is committed to following up on the Animas spill in coming months and years and making sure the EPA and others in charge of cleanup don’t lose sight of the health of this amazing recreational fishery.

For more info, check out http://www.WeAreTheAnimas.com.

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