Author Archives: andrewrypel

About andrewrypel

Andrew Rypel is an Associate Professor and the Peter B. Moyle and California Trout Chair of coldwater fish ecology at the University of California, Davis. He is a faculty member in the Department of Wildlife, Fish & Conservation Biology and Co-Director of the Center for Watershed Sciences.

Field courses help young people see the real world

by Andrew L. Rypel It was perhaps unsurprising I wound up a field ecologist. Raised in Wisconsin, I spent almost all my childhood free time roaming largely unchaperoned in nature, pre-internet. It was there that I developed a deep love … Continue reading

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That Time Warren Buffett Got Involved in California Water

by Andrew L. Rypel As if 2020, wasn’t completely strange enough, it wound up also being a time when Warren Buffett was plunged headlong into California water. Buffett of course is an American business tycoon – primarily an investor, and … Continue reading

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Celebrating Black Scientists in Fisheries & Biology

By Kim Luke, Christine Parisek, Rachelle Tallman, Marissa Levinson, Sarah Yarnell, Miranda Bell Tilcock, Andrew Rypel, and Jay Lund In honor of Black History Month, the Center for Watershed Sciences would like to highlight the contributions of Black scientists in … Continue reading

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Eat Prey Loon: lessons from juvenile loons in Wisconsin

by Brian A. Hoover, Andrew L. Rypel and Walter H. Piper Do you remember when you first moved from home, and were completely on your own in new surroundings? How did you decide where to live, or which restaurants to … Continue reading

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Can Japanese Smelt Replace Delta Smelt?

by Peter Moyle A question I get asked on occasion is: Why all this fuss about endangered delta smelt when there is another smelt that looks just the same that can takes its place? The smelt being referenced is the wakasagi … Continue reading

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A Swiss Cheese Model for Fish Conservation in California

by Andrew L. Rypel, Peter B. Moyle, and Jay Lund We read with great interest Nicholas Chistakis’s piece outlining a “Swiss Cheese Model For Combating Covid-19” in the Wall Street Journal. Christakis presents a model for considering the individual steps … Continue reading

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2021: Is this the year that wild delta smelt become extinct?

by Peter Moyle, Karrigan Börk, John Durand, T-C Hung, and Andrew L. Rypel 2020 was a bad year for delta smelt. No smelt were found in the standard fish sampling programs (fall midwater trawl, summer townet survey). Surveys designed specifically … Continue reading

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We Wish You A Silly Fishmas

by Kim Luke Night Before Fishmas “Twas the night before Fishmas, when all through the spaceNot a creature was stirring, not even a Dace;The fyke nets were hung by the boat dock with care,In hopes that St. Fish-olas soon would … Continue reading

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Picture this research – a photo blog from the Center for Watershed Sciences

by Scientists at CWS Holidays are a natural time of introspection on who we are, what we do, and why. Towards a bit of our own self-reflection, some researchers from UC Davis’ Center for Watershed Sciences (CWS) have each contributed … Continue reading

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Making “productive” assessments of California’s ecosystems

by Andrew L. Rypel Conservation science and restoration ecology are challenging and interdisciplinary fields. Managing for ecological function necessitates focus on multiple scales of ecological organization while simultaneously integrating feedback loops with critical environmental drivers like temperature, flow and habitat … Continue reading

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