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

Category: Urban beavers


Oscar Wilde said famously, “There is only one thing worse than being talked about, and that is NOT being talked about”, I’m sure he knows all about what it’s like to read a thesis that analyzes their life in granular detail. Too bad we can’t talk about it over a beer. I’m sure it would help settle my head.

Last night I got a copy of the second draft of Zane’s thesis about the Odyssey of the Martinez Beavers. His oral defense will be May 17. So that means it’s pretty much a done deal. For it he conducted 24 interviews of locals involved with the case, including our city council, reviewed documents and video and news articles. Eventually it will be published and I can quote freely from it but for now let me just say how very WEIRD it is to read a thesis about your life. All the quotes from participants were coded but I mostly can tell who everyone was. Which is also weird

ON THE ACCEPTANCE OF URBAN BEAVERS IN

MARTINEZ, CALIFORNIA

By

Zane Eddy

A Thesis Presented to The Faculty of Humboldt State University
In Partial Fulfillment of the Requirements for the Degree
Master of Science in Natural Resources: Environmental Science & Management

I can’t tell whether its more like going to your own wake OR hearing closing arguments at your prosecution.

As a woman who survived my own oral defense I can tell you this is pretty much a done deal. The proposal orals were grueling with all kinds of changes and suggestions. But the final orals were really ceremonial. My committee was so relaxed that one member breast fed her infant during the review. Even the more stringent member confined himself to recalculating my statistics on his watch. Having been totally blindsided by the proposal firestorm I came armed with every article and argument but I needn’t have bothered.

It was like graduation day and high tea rolled into one.

Happy Graduation day, Zane.

I have blocked off the code until I hear from Zane it can be actually shared, but  this should give you an ample idea of why my saturday was weird.


I was waiting for this yesterday, This is a great article and Estuary magazine has been a good friend to beavers. From the very beginning.  Unfortunately Cheryl’s lovely photo is mistakenly attributed, but I’m thrilled with the article anyway.

It seems destined that two species known for their environmental engineering would struggle to live in unison. However, municipalities like Napa and Martinez in Contra Costa County have learned to live with their beavers, and the upcoming California Beaver Summit aims to set the record straight.

“Our approach is hands-off,” says Jeremy Sarrow, a resource specialist with Napa County Flood Control and Water Conservation District, describing the county’s tack toward managing beaver dams built along inhabited waterfronts. Sarrow suggests that a three-foot-high wrapping of hardware cloth (similar to chicken wire but more durable) around the trunk of a tree is sufficient to deter a beaver.

A fine nod to Napa. Now lets go looking for other clues that Estuary understands this story. Lets see. What really matters to California? Oh that’s right. Fire.

Furthermore, it’s becoming increasingly apparent that beaver habitats have a lasting positive impact on surrounding ecosystems. Emily Fairfax, a scientist and assistant professor at California State University Channel Islands interviewed by Estuary News last April, has focused her research on beavers’ impact on fire resilience. “In severe fires, areas with beaver dams held up pretty well,” says Fairfax. Viewed from

Beavers are getting a pretty deep bench. Did you notice? So many things are going right for them. And the best people seem to be on hand to make the best poings. Thanks Emily.

Recent Bay Area history has also shown that when a beaver moves in, a whole lot of biodiversity follows. In 2007, when one settled into Alhambra Creek in Martinez, Heidi Perryman and other community advocates fought to protect it from government-ordered extermination. “Within a few months, we saw green herons, wood ducks, and river otters returning to the creek,” Perryman says. She went on to found the community group Worth A Dam to tell the story of the Martinez beaver and advocate for a similar approach in other urban waterways.

Oh yes, Et in arcadio ego. And there Martinez is. Smack dab in the middle of a dynamic beaver tale once again.

To help educate the community and share best practices across agencies and counties, Perryman and others have organized the California Beaver Summit this April 7 and 9. Speakers will clarify beaver history, share the benefits their presence provides, and teach how to interact more responsibly with them. Fairfax, a featured speaker on the second day, will discuss her recent research on beavers and last year’s historic fire season.

“It’s not about having enough evidence at this point,” says Perryman on the value beavers bring to California waterways. “Everybody that drinks water and doesn’t want their house burned down should be interested in something that solves both problems.”

And………………………..scene! Credit to Napa, and Martinez plus some shade to Brentwood which is as it should be. This is a fine article to read and share. Share with as many people as you can think of. It’s so nice that this came just in time to promote the summit. Sometimes I do get the feeling that the earth is tipping in beaver favor.

 

 


Happy Valentine’s Day! I hope someone makes you feel very special today and that you still find a little time for beavers. I’ve been seeing notifications lately about the beaver footage in the new PBS documentary about Big Bend National Park on the Texas Mexico border. This trailer will give you a great introduction for what to expect. The Beaver part starts around 2 minutes in but it’s all pretty nice watching.

Making of “Big Bend: The Wild Frontier of Texas”

Filmmaker Skip Hobbie discusses his and the crew’s experience making Big Bend: The Wild Frontier of Texas. Hobbie talks about both the challenges and exciting moments while filming the animals of Big Bend, such as beavers and bears.

Ahh I remember it well. Waking up before 5 and blearily trudging down to the dam to watch the beaver family finish it’s day. Sure we didn’t have to watch out for bears of jaguars but it was still a good idea to keep an eye out for the homeless or trains. Memories!
 
Let’s follow that excellent film up with an exciting new article out of Maryland that contains one of my very favorite quotes of all times. I can barely wait to highlight it but I’ll be patient and give you the excellent overview first,

Leave it to Beavers: Chesapeake Bay Restoration by Nature

At the 2020 BeaverCON–a biennial, international conference held in March in Hunt Valley, Maryland–wildlife and environmental professionals gathered to learn what works in human-beaver conflict management and restoration. Following the conference, DNR staff and other partners formed a Beaver Working Group to help promote the science and understanding of beavers as ecosystem engineers and to elevate “process-based” stream restoration as a climate-resilient bay cleanup tool.

Photo of blue-spotted sunfish

Blue-spotted sunfish

Throughout 2020, the Maryland Beaver Working Group has met virtually to discuss a path forward for beavers in Maryland–seeing beavers becoming a key player in increasing wetland acreage, improving habitat for a myriad of different wildlife species, and promoting healthy watersheds for brook trout and other aquatic species in need of conservation, such as the native coastal plain sunfish.

Well that’s very nice. Isn’t that very nice? Congratulations to Mike Callahan and Scott McGill for making this happen in the first place and for years and to Lois and Len Houston for years of conferences in Oregon for modelling good behavior.

To further the science and implementation of this relatively new approach, DNR is partnering with the Baltimore and Harford County Soil Conservation Districts and Ecotone, a Maryland-based ecological restoration company, to implement this approach in a number of degraded stream systems. This approach promotes ecological recovery with minimal corrective intervention. The partners in this effort are cooperatively monitoring existing beaver dam complexes to determine effects on stream temperature and fish habitat.

Early findings indicate that while some areas behind a beaver dam can see increased water temperature, the technique promotes groundwater recharge, resulting in an overall cooling effect on water temperatures.

Beavers can modify their environment more than any other animal except humans, and have a large role to play in combating climate change. For example, elevated water tables surrounding beaver-modified areas increase the density and height of vegetation, reducing diurnal fluctuation of water temperatures, maintaining base flow, and increasing aquatic habitat complexity. These environmental modifications created by beaver activity can be essential components to restoring riparian corridors and building resilient ecological systems which help to mitigate against the effects of land use changes, increased impervious surfaces, and effects of climate change.

That’s right. Not only is the Department of Natural Resources interested in beavers, The County Soil and Conservation District wants in too. Here’s my favorite part. Shhh.

Beaver Working Group members believe that like oysters, the beaver should be thought of as a keystone species in our restoration efforts. The difference is that the beaver is at the top of the watershed. Oysters are at the bottom. Both are equally important in maintaining healthy ecosystems. But beavers can help filter nutrients and sediments before they get into the tidal systems–leaving oysters with less work to do “filtering” the bay.

Be still my heart, Erik Michelsen of Public Works in Anne Arundel County might well be my favorite human ever. Just imagine hearing those words come out of Dave Scola in Martinez. Well a girl can dream can’t she?

Now wish me luck at Oakmont! And come see for yourself if you’re not sleeping in.

 


There are signs that a city has learned a thing or two about beavers. It’s lovely when people living on a major waterway don’t act surprised and overwhelmed every time a beaver shows up. Windsor is just across the water from Detroit in that part of canada that looks like it should be part of Michigan. Plus the article is headlined with a fairly respectable pun, which almost never happens where beavers are concerned.

City trees steel themselves against urban beavers

No sooner does a national wildlife symbol attempt another comeback in the built-up wilds of urban Windsor than city hall takes action, ramping up efforts to make their busy lives all the more challenging.

Trees being targeted by beavers along a stretch of the Grand Marais drain between Howard Avenue and Walker Road had their trunks recently clad in a strong steel mesh designed to foil the giant rodent’s powerful incisors.

My my my. Would you look at that. A tree wrapped in the appropriate wire in the appropriate way and to the appropriate height. That almost never happens. You’d be surprised how much that almost never happens.

“Safety is No. 1,” city naturalist Karen Cedar said of the main purpose behind cladding city trees in protective trunk coverings. It’s designed to reduce the danger posed to humans by some of the larger trees in the process of being brought down by beavers.

The metal “utility fencing” wrapped around the trunks of some of the larger trees along the drain’s banks “are meant to prevent the beavers from giving those trees a go,” Cedar said. Timber harvesting by beavers next to a multi-use recreational trail used by the public poses a hazard to those human users, she said.

The mind reels. The jaw drops. People actually thinking ahead and doing their job? I sure hope its contagious.

Beavers topple trees for food and to build their homes, usually related to dam-building. Cedar said city workers recently removed one such dam in the Grand Marais drain, but a second dam development is currently underway.

“These drains are never going to be a place where beavers build dams,” said Cedar. Beavers are hard-wired to build dams, but those city drains exist to collect and carry flood waters out of Windsor’s built-up areas.

Well, good luck with that. Hey maybe if you installed a flow device you wouldn’t have to rip out the dams every couple months, but I’m sure you know best. At least you know something.

Making some trees off-limits to the world’s second-largest rodent, or taking down dams that prevent water from flowing freely, won’t do serious harm to Windsor’s beavers, the city’s naturalist insists.

“They’ll be fine,” said Cedar.

Beavers are adaptable, she said, and will simply move on. Much of the beaver chewing and gnawing currently going on around the city is the work of juveniles “playing, practicing and testing out their skills,” she said. And the trees coming down tend to be quicker growing varieties like poplar, aspen and cottonwoods.

 I don’t share your assurance that beavers will move on if you make some trees off limits, but good for you for thinking long term about this issue. Wrapping trees is good news for beavers. Whenever it happens it means someone has A) faced the reality of beavers and B) decided they can’t kill them all fast enough.

Oh and congratulations to Oliver Richter who is the official people’s choice photographer of the year for capturing this lovely moment.


The public meeting of USDA and CDFA last night was a pretty massive yawn, but I thought this was just fascinating. Who knew that Placer had their own beaver trapping, coyote killing bear baiting program? I wouldn’t have guessed but that makes the 7 times higher stats for that county VERY interesting.

Other than that it was a bunch of pale whites apologizing for their audio and extolling people to be civil about all their murders. I’ll attach my comments at the end. And I hope you still send yours.

Meanwhile Stephen Colbert wants beavers to vote. And I couldn’t agree more.

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