Because the beaver isn't just an animal; it's an ecosystem!

Category: Beavers and water


With the dire consequences of climate change unfolding around the world, its a good time to remind everyone that beavers can help.  Okay, maybe not with the virus BUT in most of the other ways.  I guess beavers have some pretty important work to do ahead of them. Maybe we should think of them as allies in the fight and get the hell out of their way?

Lets start with a visit to our friends at Phys.org, shall we?

Less water could sustain more Californians if we make every drop count

California isn’t running out of water,” says Richard Luthy. “It’s running out of cheap water. But the state can’t keep doing what it’s been doing for the past 100 years.”

Luthy knows. As a professor of civil and environmental engineering at Stanford, as well as director of a National Science Foundation center to re-invent (known as ReNUWIt), he has spent decades studying the state’s metropolitan areas.

In a new journal article, he argues that California cities can no longer rely on their three traditional -coping strategies: over-drafting groundwater, depleting streams and importing water from far away. His analysis focuses on several strategies that, taken together, can help cities provide for their growing population with prudent public policies and investments:

Ya know, I think I heard once about this big rodent that works its entire life to save water. What was that called again?

Billions of gallons of storm water simply pour into the ocean annually. That needs to change, Luthy says. California’s coastal cities were historically engineered to flush out storm water to reduce flooding, but today cities want to capture as much as possible and put it to use. Los Angeles already gets 10% of its water from storm water runoff, and hopes to more than double that by 2035. Like potable reuse, however, storm water capture often requires big investments in pipes, storage sites and treatment facilities. The capital costs of such infrastructure vary widely, depending on local conditions. But the median project cost is often cheaper than costs to import water in the future, even assuming it will be available, Luthy says.

Wow. If only there were some way to STOP THAT WATER from flowing downstream to the ocean all over the united states in every city and town. It wouldn’t take a big dam if there were LOTS AND LOTS of little ones.

Can think of a way to get lots of little dams built in every stream in America? I can.

GUEST COMMENTARY: Leave it to Beavers: significant partners in dealing with climate change

Guest commentary by Gail Sredanovic in consultation with Heidi Perryman

Think a babbling clear stream is the only healthy one? Think again. Once hunted almost to extinction, beaver were once much, much more numerous, and their ponds and wetlands created a very different waterscape of a  kind far better adapted to climate change and drought. There is abundant research to document this.  Here is what the Water Institute of the Occidental Art and Ecology Center has to say:

Gail is a long time supporter and reader of this blog for many years. She’s the reason the beaver festival in 2013 was visited by the Raging Grannies from the southbay as she was their lyricist. She’s a firm believer in beaver works, and a dedicated conservationist.

“Extensive research has recently heightened recognition of the important role beaver (Castor canadensis) can play in watershed health and climate change resiliency. The species’ ecological services include enhanced water storage, erosion control, habitat restoration and creation, listed species recovery, the maintenance of stream flows during the dry summer period, and other beneficial adaptations to our changing climate conditions.

While this keystone species has created valuable wetland habitat across California for centuries, beaver are often overlooked or maligned. Other western states are taking a pro-active stance towards beaver restoration, but agencies and landowners in California are focused on managing beaver as a nuisance rather than stewarding them for their benefits.”

Reminding millions of climate activists that beavers save water ain’t too shabby, Thanks, Gail.

The Water Institute has a booklet which you can order or view online to gain a better understanding of the history of beaver in California and how, through better stewardship, we can partner with them to fight floods, wildfires, drought and extinction, while mitigating potential damage. Anyone concerned about the future of water in California should take this seriously. Check out also the abundant information on the website martinezbeavers.org/wordpress or consult Ben Goldfarb’s very readable, Eager, the Surprising Secret Life of Beavers and Why they Matter.

Thank you Gail! California needs beavers, and you did a great job reminding us why.

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How beaver-connected am I? I’ll tell you how connected. I was sitting home minding my business yesterday when I got an excited email from the former governor’s former water advisor that there was an article about beavers in this month’s Estuary Newsletter, and THEN the author of the article, Lisa Owens Viani wrote me that her article had been published!

Because it’s not what you know about beavers,  its who you know. Am I right?

Beaver dams may offer wildfire protection to western watersheds

Photo: Emily Fairfax

in addition to providing better-known benefits such as groundwater recharge, wetland and habitat creation, and riparian restoration. A new study by California State University Channel Islands professor Emily Fairfax analyzed satellite-derived vegetation indices of riparian areas and beaver dams mapped via Google Earth. At the same time, Fairfax analyzed data for large (over 30,000 acre) wildfires that had occurred between 2000 and 2018 in California, Wyoming, Colorado, Idaho, and Oregon, and compared the fate of beaver-dammed areas to areas without dams. Fairfax found that riparian corridors within 100 meters of beaver ponds were buffered from wildfires.

“In all of them, the beaver ponds made it through the fire and stayed much greener. The beaver-dammed riparian zones were functioning differently, says Fairfax. While the riparian areas without beaver dams eventually recovered on their own, she says, vegetation in the areas with dams stayed green and did not go through the amount of habitat destruction the other areas did. Fairfax was surprised by the amount of beaver damming and wet meadow development she found in her study. “Those colonies have probably been there for hundreds of years, making it through wildfires. There’s not a chance they haven’t burned in the last 200 years.” With drought and wildfire increasing in the West, she says, this latest finding is yet another reason to welcome beavers back to Bay Area waterways.

As if we NEEDED another reason to welcome them back!  Wonderful! Emily’s excellent research is leaping to the head of the pack, and not a moment too soon because at this rate by the time we’re done sheltering in place it will be another fire season. Thanks Emily and Lisa for helping beavers spread the word.

We shouldn’t be at all surprised. Only a somber and dignified researcher could produce a doctoral dissertation of this caliber.

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Goodness I must have sounded very plaintive yesterday because my post received a lot of sympathetic ‘buck up’ responses. Sheesh, don’t feel sorry for me. I do okay. I’m in a book for pete’s sake! How many people are in a book, I ask you?

…Heidi Perryman, a former child psychologist who, through willpower and single-mindedness, has become one of the planet’s foremost authorities on Castor canadensis….Ask a fellow Beaver Believer to characterize Heidi Perryman, and the primary descriptor you’ll hear is “force of nature.” Perryman’s primary endeavor is Worth A Dam, an online nonprofit that serves as a comprehensive clearinghouse for beaver science and coexistence techniques; a beaver news outlet, updated daily; and a sort of gossip blog for the castor cognoscenti.

Ben Goldfarb “Eager”

And the book won the Penn science writing award so we know it MUST be true! No more sitting around pining over some piddly donation. Do not despair. The sun also rises. And yesterday I finished something I’m very proud of an can’t wait to share with you.

In order to fully docuent my efforts allow me to explain that it meant stripping out the audio from another film from the Pacific States Marine Fisheries Commission that I loved but thought wasn’t punchy enough, and using audacity to re-sequence the clip to my liking with background noises to emphasize the point. Then downloading it as a wav. file and it then uploading it to audioacrobat to turn it into an MP3 file. Then getting it to Powtoon with images so it could be worked into an instructive video.

Probably 5 days of work but my goodness I’m pleased with the finished product. Please share with all your friends before the copy right police come to take me away.

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Oh and happy Easter!

 


More science reporting that doesn’t know its about beavers. Again from our friends at Phys.org.

Groundwater, a threatened resource requiring sustainable management

According to data from the Food and Agriculture Organization of the United Nations (FAO), groundwater supplies half of the world’s population with fresh water and makes up 43% of the water used in irrigation. Despite its importance, it is calculated that about a third of the world’s greatest aquifers are drying up quickly and that 20% are being overexploited. In Spain, a country where a large number of crops are watered with groundwater, scientific data show that the extraction rate is much higher than the water replenishing rate.

Okay, I get that groundwater is important for watering crops and stuff, but I don’t understand what that actually has to do with beavers?

“The Guadalquivir Hydrographic Confederation took several exceptional measures in order to regulate the situation, but it was done by negotiating with the irrigation communities using the traditional ditches, as well as with the new water users who use well water to make it possible to accept the new rules,” explains researcher Mar Delgado. The number of hectares permitted to irrigate was determined, wells were monitored, flow meters were installed, and the amount of water that could be taken for each authorized plot of land was limited.

“The weight of the beaver pond presses water deep into the pond. Recharging aquifers for use by downstream farmers and ranchers”

100 ponds do this 100 times. 1,000.000 ponds do this even better. Or I guess you could just bring in the feds and control painfully who gets water and who doesn’t.

Once it was determined which plots of land had the right to irrigate, most of the farmers with this right opted to rent their land to two major producers, specializing in marketing broccoli on the international market. “The production of added value crops partly covered the higher cost of water use but at the same time these producers could rely on yearly water provisions and the possibility of guaranteeing that their crops used water sustainably, an increasing concern for European consumers,” explains the lead author of the study.

Sure, I guess. That works too. Broccoli?

 


Beaver bright spots don’t often come from Virginia. Admittedly there are a few true believers there, and that one awesome paper from Stephanie Boyles but in general it is not the best place in the world to be a beaver.

Ryan Bradley’s nice long article might change all that. I’m not sure I understand the timing, since he mentions Rachel Poliquin’s book and quotes Frances Backhouse but not Ben Goldfarb. But it’s a wonderful read. Here are some highlights but go check out the whole thing.

What the Beaver Can Teach Us About Innovative Conservation

The next morning, after my drive up the mountain, at the Mineral Lodge Restaurant, I met Kristen Wilson, an ecologist at the Nature Conservancy and one of the overseers of the BDA project. Soon we’d be heading out to Child’s Meadow to see the beaver dams she was looking after. Over breakfast, she outlined the broader implications of the project. What I had to understand, Wilson said, was that something seemingly as simple as a small dam constructed out of woven willow branches, blocking up a thin creek, was not quite so simple.

The dam was meant to perform several tasks. A few of these, such as habitat restoration and water retention, were fairly obvious. But one of the most important things the dam would be doing was trapping carbon in the murky, silty, slow river bottom behind it. This task—carbon capture—was what paid for the dam’s existence. The BDA pilot project in Child’s Meadow had received the bulk of its funding via California’s cap-and-trade program, which in 2018 paid out $1.4 billion to fund a huge range of projects, everything from rebates for buying environmentally friendly cars and buses, or for solar panels, to grants for planting trees in urban areas, to simply buying up land to preserve and restore it.

The BDAs were, Wilson explained, a newer and cheaper form of meadow restoration. The usual process of restoring a wetland in a meadow was simple construction: dig a pond, plug up the downstream end, watch the water fill it in. Pond-and-plug, it’s called. Of course, this requires some big machinery, but using big machines—engineering our environment—is something we are good at, and it results in a picture-perfect mountain meadow with a pond at its center. One problem with pond-and-plug is that it is expensive, easily four or five times the cost of BDAs, if not more.

Ryan is vising the site of that series of BDA’s that won the coveted grant money in 2018 for climate change projects. BDA’s capture carbon. That’s the whole point. All the other good things they do for fish and wildlife is just an added bonus.

Farther down the creek was a strand of dead trees. I asked Wilson what was going on down there and she told me that’s where the real chaos was, because a family of beavers lived there. We walked down toward the dead trees and, as we neared, Wilson and I spotted a woman hunched over a section of creek bank, staring intently at the water. The creek here was indeed chaotic. The beavers had dug channels, as they do, to avoid awkward passage over land. The waterways cleaved the landscape into jigsaw-puzzle pieces. It was easier just to stick to the waterways, rather than chance it on land and trip into an unseen channel.

The woman, Wilson whispered to me, was Karen Pope, a wildlife biologist who studies frogs. Specifically, the Cascades frog, a very endangered species that lives precisely within the beaver-induced chaos. We watched her watching the river, hunting for a frog, until she stood up, noticed us, and beckoned us over. She and Wilson immediately got down to it. Wilson wanted to know what Pope thought about the sections of dam that had blown out, where the water was coming over and the dam was no longer doing what we think a dam is supposed to do.

Pope pointed downriver slightly from one such damaged section, to where a small bite had formed from the flow of water hitting the bank and scooping away at its side, creating a still little pool. “That’s where the frogs breed, right there,” Pope said. “And here—in these little channels the beavers create, that’s perfect frog habitat too. This frog is tied completely to this environment.”

There were many such species. A bird called the willow flycatcher, also endangered, hunts in the beavers’ ponds and nests in the beavers’ willows. There were insects and muskrats, fish and waterfowl, and anything that needs an excess of water in an often dry landscape. It struck me then, as Wilson described species after species that benefits from beaver engineering, that the lesson of the human-built beaver dams, and of being more beaver-like generally, was one of deconstruction.

That is, instead of our built landscape existing as a way to live apart from nature, of keeping it at our doorstep, we should accept the fact that nature is inescapable. The whole climate is changing, and large swaths of the globe are becoming inimical to human life. Nature is a problem we can’t engineer our way out of. But, like the beavers, we might engineer our way back into it.

Isn’t that nice!  Yup there’s a lot more than sequestration on a beaver’s resume! I like to come across the passage as if by surprise in any article. It took Ryan a page and a half to get there. But that’s okay. He’s there now.

The whole of nature—which is to say, all of the world—is like the beaver’s patchwork quilt: dynamic, changing, chaotic. Beaver dam analogs and their champions often find themselves in uneasy coexistence with regulatory agencies responsible for keeping rivers manageable and controlled. The very purpose of a BDA is to add a bit less control—a bit of untidiness—to the river. The dams help the river burst its banks, begin to meander, and reenter the old floodplains. But then, it’s often a flood-control agency rubber-stamping such projects, and these agencies are inherently skeptical of introducing an object meant to bring about the very thing—a flood—they have been tasked with preventing.

“People are really attached to stasis. It’s the unfortunate result of human nature,” is how Kate Lundquist explained the resistance to BDAs. Lundquist is a director at the Water Institute at the Occidental Arts & Ecology Center in Sonoma, California. She and her colleague Brock Dolman describe themselves as being part of “the whole beaver dam analog movement,” which is also a movement toward what’s known as process-based restoration. The idea behind process based restoration is both simple and radical. Rather than reconstructing an ecosystem based on our ideas of how that ecosystem appears, to us, why not try to kickstart some of the primary drivers of that ecosystem and let nature take it from there?

Yes, it’s true. We like things to be the way we left them. We like our creeks in straight predictable lines and we don’t like them to jump their banks. And beavers change all that. It’s what they do. Change is every beavers middle name.

Dolman mentioned a place where the kind of regenerative disturbance and process-based restoration he and Lundquist were talking about had accomplished some extraordinary transformations in a very short amount of time. About three years earlier, some BDAs had been placed in a small creek outside of Lincoln, California, just north of Sacramento. It was hot, dry, brush-filled rangeland that had, a long time ago, been marshy floodplain pockmarked with beaver ponds. Gold miners came in, dynamited the creek, and named it Doty Ravine. It had been tamed ever since. But in just a few years, Dolman said, “a very large chunk of land has been turned back into an insane beaver habitat.” The place was, he told me, like going back in time to a prehistoric, practically prehuman landscape.

Damion Ciotti is a rangy man who speaks with the quiet enthusiasm of someone prone to spending long bouts outside the office whenever possible. Ciotti was driving a pickup through winding roads in the Sierra foothills, out toward Doty, while telling me about his early experiences in hydrology, when he really began learning a river. Ciotti is a restoration specialist at US Fish and Wildlife and is the reason there are BDAs in Doty. When he was in graduate school in Oregon, and becoming obsessed with fly-fishing, he’d skip class and hit the river, watching it very closely for hours—all day, more or less. That’s where he learned how to watch moving water.

Nice to see Damion in an article. He’s usually a quiet behind the scenes mover and shaker. It’s also nice to read about ANY GOOD BEAVER PROJECT IN PLACER COUNTY the trapping capital of the state. In fact I think Lincoln was the site of the most beaver permits issued for trapping. Ahh memories!

He hoped it had somehow managed to spawn, as the new wetlands made for perfect salmon hatcheries. Salmon, frogs, birds, and a seed bank for native aquatic plants—the beaver-built wetlands were nutrient-rich nurseries for all sorts of critters. And the cows, even though they didn’t have much to graze, seemed to enjoy hanging out near the water’s edge too. It certainly was cooler down there in the summertime.

We reached a locked fence by the side of the road and Ciotti pulled up to it, jumped out, unlocked it, and drove us onto the rangeland property. In the distance stood a strand of cottonwoods. This was where the wetlands began. Ciotti parked on a bluff above the strand and we quietly put on waders to trudge through the sludgy muck. In the silence, I noticed the air was alive with birdsong, coming from the cottonwoods, willows, rushes, still waters, a ringing that emanated from this oasis. We dropped down into it and the birdsong grew near cacophonous.

I love to think about the transformations beavers bring, both to the landscape they alter and to people lives who cherish them. There are rewards we all expect to see. But there are others, that we could never have imagined.

I asked Ciotti what had been the biggest surprise about the whole project, expecting him to say something about the extraordinarily low cost. “It’s the beavers, they did something so monumental. This, all this, was oak savannah. Now, in three years, this is the largest connected wetland in the whole Sierra foothills. These aren’t especially big creatures, they’re not burning a crazy amount of calories, and just look at all this!”

I thought, then, of the final words from the woman-turned-beaver in the Haida legend: “We have returned to our home in the water.” The story seems to be less Agreedabout how beavers are like us, and more about how we might become like them.

Agreed.

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