ARCHIVE
-
Shell-shocking Details About Freshwater Mussel Reproduction
By Andrew L. Rypel, Miranda Bell Tilcock, and Christine A. Parisek One of our favorite aspects of teaching is (occasionally) being able to really surprise a student. Many of the fun nature facts folks pick up nowadays come from TV, YouTube, social media, and other media outlets. But these outlets have an inherent bias: they…
-
Hidden links between aquatic and terrestrial ecosystems: part 2 – Sacramento River
By Nicholas Wright Running through the Central Valley’s patchwork of yellow, green, and brown farmlands is the deep blue of California’s largest river–the Sacramento. Once a much wider river, meandering across the flat valley floor, the Sacramento has been straight-jacketed by steep earthen levees and confined to a more controlled channel. On either side of…
-
A “Peak” into California’s Alpine Lakes and their Food Webs
By Christine A. Parisek “The Sierra Nevada is five hundred miles of rock put right. Granite freed by glaciers and lifted through clouds where water, frozen and fine, has scraped and washed it into a high country so brilliant it brings light into night.” – Willard Wyman Alpine lakes are fascinating ecosystems. They are recognized…
-
Living with Extreme Floods in California
by Peter Moyle, Jay Lund, Andrew L. Rypel, Carson Jeffres and Nicholas Pinter Floods and their consequences are a reality for many worldwide, including those living in California. This reality is evidenced by pictures of people stranded on roofs surrounded by water, people paddling down water-filled streets in makeshift boats, and farm fields and orchards…
-
Marsh on the move: bringing environmental education into the classroom
By Josie Storm, Christine Parisek, Brian Williamshen, Caroline Newell, Sarah Yarnell, Kim Luke, Jake Shab, and Erin Tracy This spring, a group of researchers and students at the Center for Watershed Sciences (“Watershed”) organized a community engagement event at a local high school, with the help of our Diversity, Equity, and Inclusivity Committee. At Watershed,…
-
Hidden links between aquatic and terrestrial ecosystems: part 1 – Sierra Nevada lakes
By Nicholas Wright This blog is the first in a three part series on ecological subsidies that will appear throughout summer and fall ’23. It’s easy to think of aquatic and terrestrial organisms inhabiting entirely separate worlds–they experience distinct biophysical conditions, interact with different ecological communities, and are imperiled by divergent environmental threats. But there…
-
Putah Creek’s rebirth: a model for reconciling other degraded streams?
By Emily Jacinto, Nann A. Fangue, Dennis E. Cocherell, Joseph D. Kiernan, Peter B. Moyle, and Andrew L. Rypel It’s hard to look at native fishes in Putah Creek and not grin a little. Be it a Sacamento Pikeminnow (below), a Sacramento Sucker, a Tule Perch, or even a Chinook Salmon – Putah Creek has…
-
Can Sacramento Valley reservoirs adapt to flooding with a warmer climate?
by Jay Lund and Ann Willis Editor’s note: This is a blog that was originally posted on 6/25/17. Since publication of the blog, there has been interesting newer research about running the San Joaquin rim dams for “functional flows” (Willis et al. 2022). This work also shows there is also an important component about…
-
Endangered Freshwater Fishes: Does California Lead the World?
By Peter B. Moyle & Robert A. Leidy See Moyle and Leidy (2023) for much more detailed version of this essay. https://doi.org/10.1017/9781108758826 Few things give the authors of this essay more pleasure than swimming in a California stream on a hot summer day, wearing a mask and snorkel, and observing diverse native fishes behaving naturally.…
-
Facing the Dragon: California’s Nasty Ecological Debts
By Andrew L. Rypel “Every time you borrow money, you’re robbing your future self.” ~N. Morris When I was younger, a close friend of mine struggled with a crippling debt. It was during that unique period shortly before and after college graduation. He had, in relatively short order, maxed out three credit cards, plus taken…
-
Water Wasted to the Sea?
By James E. Cloern, Jane Kay, Wim Kimmerer, Jeffrey Mount, Peter B. Moyle and Anke Müeller-Solger This essay is a condensed version of one that appeared in the journal San Francisco Estuary and Watershed Science (Vol. 15, Issue 2, Article 1), in July 2017. The complete article with references and author’s contact information can be found…
-
What’s the dam problem with deadbeat dams?
by Andrew L. Rypel, Christine A. Parisek, Jay Lund, Ann Willis, Peter B. Moyle, Sarah Yarnell, Karrigan Börk *this is a repost of a blog originally published in June 2020. Damming rivers was once a staple of public works and a signal of technological and scientific progress. Even today, dams underpin much of California’s public…
-
Whiplash Again! – Learning from Wet (and Dry) Years
by Jay Lund, Deirdre Des Jardins, Kathy Schaefer “Old superlatives have been dusted off and new ones count to better describe the tragedy, damage, and trauma associated with the State’s latest ‘unusual’ weather experience.” DWR Bulletin 69-83, California High Water 1982-83, p.1 “California’s climate has often been described as variable, inconsistent, and unpredictable. The meteorological…
-
Monster Fish: Lessons for Sturgeon Management in California
By Peter B. Moyle & Andrew L. Rypel If you ever watched National Geographic television and are interested fishes and rivers, you likely have some familiarity with Dr. Zeb Hogan. He hosted a series of shows on giant freshwater fishes, called Monster Fish. He and a colleague also recently published a fascinating book (Hogan and…
-
Tulare Basin and Lake – 2023 and their future
by Jay Lund “The fact that our rivers have been relatively quiet during the last 40 years probably doesn’t mean anything; it’s just a statistical coincidence …. The problem is more psychological. We have become complacent. When we don’t experience a big flood for a while, we tend to forget just how big our floods…
-
Hatcheries alone cannot save species and fisheries
By Andrew L. Rypel and Peter B. Moyle The photo is a common one (Fig 1). Large numbers of fish are being released into a river, stream or estuary – products of a fish hatchery. A politician or government leader looks on, or even participates in the release, says a few words, and then grabs…
-
The Banality of Floods (and Droughts)
By Jay Lund California’s ongoing floods and very wet year overall will continue to grab headlines, provide great pictures, and break some local records, but overall this year is unlikely to be truly extreme from historical or broader water policy and management perspectives. It can still be a very useful wet year, beyond just having…
-
Lake Tulare (and its fishes) shall rise again
By Peter B. Moyle “Agriculture has claimed and taken away our former fishing conditions and we have but little water left for fish life within reach of the common people.” ~S.L.N. Ellis, 1922. “When nature provides more water than storage facilities can handle, the lake will rise like a soggy Phoenix from the supine countryside…
-
Perspectives on DairyMAR
By Thomas Harter and Helen Dahlke Managed Aquifer Recharge (MAR) to not only store water but also to prevent unwanted flooding. In the recent executive order (N-4-23), governor Newsom provided a near-blanket permit for water managers to divert surface water from flooded streams toward groundwater recharge, an operation referred to as “managed aquifer recharge” (MAR…
-
New methods emerging for water management in California
by Elsa Cailleach Some of you might have noticed it’s been rainy outside lately – alot! Amazingly, the long-desired string of atmospheric rivers is now plaguing the previously drought-ridden state with more water than anyone knows what to do with! This blog reports on some interesting new methods of water capture and management emerging in…