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

Month: January 2019


Beavers are so difficult. Everywhere they go they cause problems, selfishly thinking of their own needs when others’ comfort is at stake. Just look at the nuisance they’re causing in Maine?

Beavers wreaking havoc with a Maine ski area’s snow guns

CAMDEN, Maine (BDN) — The sub-zero temperatures that swept across Maine last winter can be a hindrance to the snowmaking process for ski areas. But on top of the freezing conditions, snowmakers at the Camden Snow Bowl had to deal with another complicating factor: beavers.

The water used for making snow at the Snow Bowl — midcoast Maine’s only ski mountain — comes from Hosmer Pond, located at the base of Ragged Mountain. The beavers that call the pond home have taken to damming up the intake pipe that brings water to the ski area’s snowmaking guns, delaying the process until the pipe can be cleared.

Now isn’t that just like a beaver! Damming up the pond where you like to drain water to make snow! What are they thinking? I guess selfishly trying not to let their family freeze solid in a shallow pond. How selfish! The nerve of some rodents!

This season, the Snow Bowl has enlisted a diver to remove the beavers’ handiwork every time the snowmaking process is about to start. While Ward said the beavers are still trying their best to clog the pipe, preempting the delay in the process by hiring a diver has made for much smoother snowmaking.’

A diver has been digging out the pipe? In sub-freezing temperatures? More than one time? It’s Maine I guess, so people might as well dive into a hole in the snowy waters. They are hardy up there, digging out their cars and unfreezing their toilet seats. But still. Brrrrr….

So I’ve been working on some beavers and birds images for an upcoming talk at Mt Diablo Audubon. I wanted a nice graphic to get me started, and I’ve always wanted to have really short ready-made beaver ‘comercials’that any one could use  to tell the story. Of course I have zero artistic skill so this could only be made by stealing the artwork of others and adjusting, resizing and editing it down to make it just so. What do you think?

i had to hunt a long time for just the right tree and sky. I like the colors of this all together so i think it works for now.

And speaking of wild things folks are willing to do in extreme weather. You need to watch this. Don’t ask me how I know. You just do. Turn your sound up.

You’re welcome.


It used to be that North America had enough wildlife and wild places that it was easy to think that everyone could help themselves. During the fur trade there were no bag limits and just imagine what it would be like if the only thing standing between you and your fortune were a few unlucky beavers.

Now things are more complicated, but we still aren’t sure how to proceed. This article by Kyle Artelle points out that a great deal of our ‘policy’ isn’t based on the science we pretend is determinative.

Is Wildlife Conservation Policy Based in Science?

An overview of the model reveals something that might come as a surprise to much of the public: Wildlife management in Canada and the United States primarily means management of hunting, and it is focused on the small subset of the human population that hunts, not on the conservation of species and their habitats for their own sake. Some of the blurring is likely intentional, an adaptation of organizations to evolving cultural mores that place a high value on conservation. For example, the Boone and Crocket Club, the world’s first hunting club, describes itself as a pioneer in conservation, and adheres to the aforementioned wildlife model that guides hunting across Canada and the United States, the North American Model of Wildlife Conservation. However, even though conservation and wildlife management might overlap, understanding where they don’t can be critical, especially as it pertains to management ostensibly done on behalf of the public.

Conservation is certainly not incompatible with hunting. Cultures across North America were sustained by animal populations for millennia before European colonization triggered the widespread degradations seen in recent centuries. However, the two can certainly be at odds.

Hmmm conservation and hunting are so much at odds that a senator from San Diego is introducing a bill to ban the fur trade in California entirely. She says it’s cruel.

Fur trapping was once the heart of California’s economy. A new bill could ban it.

A new bill in the California Legislature would put an end to a California industry that predates the Gold Rush. Assemblywoman Lorena Gonzalez, D-San Diego, submitted a bill that would prohibit the state from issuing fur trapping licenses.

Now I’m just a retired psychologist but I’m thinking that cruelty from beaver trapping for the fur trade is the very last thing on my list of things to worry about.  i’m much more worried about giving out permits to Depredate any beaver that interferes with your property. Thousands of beavers lost their lives because of chewing the wrong tree or damming the wrong stream last year.  I’m sure not even 100 were trapped for their fur in our state.

Her bill will still get some attention from the hunting lobby I’m sure. But this discussion in American Scientist raises points that are a lot more threatening to the pass time. The author points out that we like to pride ourselves that our hunting policy is ‘science based’ and that we don’t let people take more animals than is good for the population.

But this in itself is problematic because no one is counting the population anymore.

The effects of managed exploitation might extend far beyond targeted species. The environmental journalist Ben Goldfarb has recently published a book on the ecological importance of beavers, titled Eager: The Surprising, Secret Lives of Beavers and Why They Matter. By phone from Spokane, on the heels of one of the worst wildfire seasons in history, he waxed ecologically about the myriad benefits his buck-toothed protagonists provide. They serve as keystone engineers of ecosystems across the continent, creating firebreaks that help to attenuate large-scale wildfires, providing habitat for endangered salmonids, supporting sedges eaten by one of the rarest butterflies in North America, and improving water quality by entrapping sediments, filtering agricultural runoff, and raising water tables.

Beavers also serve as textbook examples of the conflict between conservation and wildlife management objectives. The book contains slapstick scenarios of various government-led initiatives operating in direct contradiction to one another. During our phone call, Goldfarb said incredulously, “In Wyoming’s Bridger-Teton National Forest, you have the Forest Service working to reintroduce beavers into watersheds as a restoration tool. At the same time, you have the state permitting trapping of those very same beavers. There are cases of folks carefully planning and carrying out the restoration of beavers to a particular stream, only to have the phone ring with a trapper calling to say, ‘Hey, I’ve just bagged one of your ear-tagged animals!’”

Goldfarb explained how this story illustrates the contradiction between beavers viewed through a lens of conservation and beavers viewed through a lens of human interests. He also noted similar contradictions elsewhere across the country. For example, thousands of beavers are killed to address complaints such as blocked culverts and property flooding. Effective, nonlethal alternatives are used far less frequently.

YUP, that’s the world we live in. Some agencies are trying to reintroduce beavers to restore wetlands and some are issuing permits to kill them. And hey here n California they don’t even allow folks to do the first part because beavers are pests. Ya know?

Despite their pesky qualities, Ben’s remarkable book is just getting dropped into so many interesting conversations. It even found its way into the SF gate yesterday when they republished Jay Matthews article from the Washington Post about using well-told stories to teach science

Stories can be an crucial part of the experiment in the way we teach science

“Science education focuses on doing, which is the way we’ve been teaching science for decades,” she told me. “We will continue to do so under the NGSS. Science students will spend much of their time doing experiments, studying their results, and coming to conclusions, but in a highly organized way, and now they will be asked to explain what they’ve been doing.”

“They will be missing out on science’s stories, its challenges, its heroes, its villains, and its aspirations. Knowing the narrative behind an achievement – breaking the genetic code for example – helps nail its underlying meaning and importance,” she said.

My favorite recent books have been David Quammen’s “The Tangled Tree” (molecular biology), Ben Goldfarb’s “Eager” (beavers) and Steve Brusatte’s “The Rise and Fall of the Dinosaurs.”

All in all, I would say the right people are talking about beavers to the right people because of Ben’s book. And that’s an awesome thing to behold. Lets finish our story of wonders with a fantastic photo from devoted bat advocate and beaver friend Jo Ellen Arnold who has missed the beaver festival for the last few years because of her wonderous eco-travels. She lives on the American River in Sacramento and often sees sights like this in her back yard.

About this photo she writes

“My friend and neighbor, Robert Sewell, got a text from another neighbor the other day reporting that there were 5 beavers basking in the sun on the north side of the American River at Sutter’s Landing. By the time he got there, he found only this one bathing beauty, but what a catch! We see evidence of beaver all along the river, and Robert says the openings to their dens are now visible since the river is so low. I’ll have to get him to show me where to look. I’ve seen them swimming at dusk, but never during the day, and never out of the water.”

 


So I was thinking yesterday that it had been a while since I saw any news about EAGER, and wondering if all the buzz was finally dying down. Then i did a google search and happened to be about two hours behind the publication of this story.

Ten Of The Best Books About Climate Change, Conservation And The Environment of 2018

Whether you are giving gifts to others or to yourself, this list of the best popular science books of 2018 about climate change, conservation and the environment is a great place to start reading and gifting

Eager: The Surprising, Secret Life of Beavers and Why They Matter by Ben Goldfarb

Before white settlers arrived in North America, the continent was home to millions of beavers. Thanks to these industrious rodents’ activities, the landscape was covered in an intertwined system of streams and wetlands that resembled a “bowl of spaghetti”, making the land much wetter than it is today. After white settlers arrived, beavers almost disappeared because their fur was intensely popular for making hats for English gentlemen. But beavers are a keystone species whose presence supports entire biological communities, so the dramatic reduction of these animals resulted in the loss of many critically important habitats. Additionally, the loss of beavers’ “ecosystem services” affected humans too by reducing groundwater retention, thereby increasing the frequency and severity of floods, droughts, erosion and wildfires, and intensifying the effects of climate change. In this impassioned and educational book, environmental journalist Ben Goldfarb highlights the ecological importance of beavers, shares important facts about their natural history, and corrects persistent misconceptions about them. He also interviews a variety of experts, ranging from scientists and environmentalists to ranchers and citizen scientists, and shares scientific arguments espousing the restoration of the beaver to its ancestral lands. Includes lots of useful references.

“Written with clarity, intelligence, and humor, this engaging book will appeal to basically everyone.”

Wow! Forbes magazine! Congratulations Ben, I knew your wonderful book was going to take beavers many interesting places but i never thought it would take them to Forbes! We especially love that last sentence of the review and couldn’t agree more. “Written with clarity, intelligence and humor”. So true!

And beavers, don’t forget the beavers.


i was also surprised to see that our old friend Phys.org forgot to mention how important beavers were for the problem they discussed yesterday. When there’s an obvious solution you should say so, don’t you think?

Freshwater wildlife face an uncertain future

Pacific salmon are one of Canada’s iconic creatures. Each summer, they complete their, on average, four- to five-year-long life cycle by returning from their rich ocean feeding grounds to the creeks and streams where they were born. Here, following in the “footsteps” of their parents, they will lay eggs, die and give rise to the next generation of salmon.

For our research on the migration and conservation of Pacific salmon, we have looked at how —lakes, rivers, streams and wetlands—are changing around the globe. Society has its finger on the pulse of the oceans, but what about our too often forgotten fresh waters?

While fresh waters make up just a fraction (0.01 per cent) of all the water on the planet, they are home to nearly 10 per cent of the Earth’s known animal species, including one third of all vertebrates (anything with a backbone). There are even more species of fish in freshwater ecosystems than there are in the ocean.

This picture is, sadly, changing quickly. The World Wide Fund for Nature (WWF) recently published the “Living Planet Report 2018,” showing that freshwater species loss is more severe than species declines on land or in the ocean.

Alarmingly, populations of freshwater species on average have declined by more than 80 per cent in 50 years, while populations of land-dwellers and ocean creatures have fallen by less than half that.

Gulp. That’s a huge loss for salmon and trout, frog, otter  and herons. if only there were SOME animal that worked tirelessly to make freshwater wetlands that more animals can use. I’m scratching my head here. It’ll come to me in a moment. It’s right on the tip of my tongue.

But the solution does not rest solely with technological advancements to reverse past errors. We need to meet the freshwater needs of both people and nature by changing the way we treat fresh waters, for example, through our day-to-day actions, by joining or supporting the Alliance for Freshwater Life and pressing our governments to join the global effort to preserve freshwater.

SAVING FRESH WATER SINCE BEFORE YOU WERE BORN

We’ve talked about Torrey Ritter before. He’s been on our radar a while. Back in April I said about him, “Torrey is a true Beaver Believer who finished his degree at Montana State University studying beaver dispersal patterns and went back for a masters in Organismal biolology (which I didn’t even know was a thing). His wiki page encourages everyone to support your local beavers, so you can tell we’d be fast friends.”

Now Torrey is doing all that good work for the Montana Fish, Wildlife and Parks department. Collecting a regular pay check hasn’t changed his fondness for beavers one single whit.

Leave it to beavers

Beaver benefits

Torrey Ritter, an FWP beaver specialist, says the streams and rivers in the West look very different than they did before Europeans settled the west and brought grazing animals with them. Once the beaver fur trade took off and trapping and shooting beavers became an integral economic puzzle piece, what were once winding, interconnected waterways with wide floodplains gradually turned into straighter, narrower and faster streams.

“Beavers created this really diverse riparian habitat that all these different species could live in,” says Ritter. “What beavers do is spread water out over a much larger part of a floodplain. It seeps through the system much slower and not only benefits wildlife but also agricultural producers and fishermen. Just having those dams in place slows that water down a lot.”

How’s that for an introduction? Not only is Torrey a great beaver teacher, he also manages to capture the attention of an impatient reporter who made space for ALL of this good news in their glowing article.

Beaver dams create wetlands in redirecting the flow of streams, providing healthy habitats for wetland-dwelling species like birds,

Bill Amidon-NH

amphibians and insects. While they’ve been known to use a variety of different tree types to build their dams, they usually focus on quick-growing trees like poplars and cottonwoods. Those types of trees often sprout multiple seedlings from the spot the beaver chops off, meaning that beaver activity can facilitate the growth of new sprouts.

That means healthier soil, more environment-cleaning photosynthesis and better habitat for other animals, including greater green cover for large game like elk, deer and wetland-loving moose.

See what he did there? He basically just said that more beavers mean better hunting in big sky country. He is tying beaver benefits directly to what he knows matters most. Torrey is smart.

In addition to helping out native plant species and facilitating regrowth, beaver dams also help preserve water quality and quantity. 

The dams, which are porous, act as natural water filters, slowing down streams and helping to remove sediments from fast-moving water. Since the whole point of the dam is to provide a beaver family with a still pool in which to live and hunt for food, slower water means the flow from the other side is cleaner as a result.

Cleaner water, More moose, Better soil. Got anything else?

Slower-moving water also provides greater recharge for nearby groundwater sources. Since the dammed stream takes less sediment with it and meanders more, it allows for greater absorption into the water table and reduces erosion along nearby banks.

What’s more, Ritter says, is that the sediment-catching properties of beaver dams can help streambeds and waterways return to their historical character.

“All that sediment, rather than being flushed down into reservoirs, is caught behind dams and can help rebuild,” he says. “You end up with these complex, multi-channeled floodplains that provide resources for a really large number of species.”

And, since so much of western Montana’s streamflow comes through mountain snowmelt, beaver dams built in mountain streams help to moderate the rate of flow, meaning more water later into the warmer months.

“Dams in the mountains that slow that down ensure that there are longer flows later into the year,” says Ritter. “There’s more of a buffer between the snow melting off the mountains and droughts later in the year.”

Tadaa! You are watching a master at work. Better hunting and fishing. Cleaner water and less drought. What else do you need to convince you? Do you think he’s painting an overly rosy picture? Wait for the next punch.

But no matter the benefits, in some situations simply leaving beavers to their own devices isn’t the best technique. Trapping is an option for beaver management, but the state of Montana requires a permit to trap, and there are non-lethal ways to protect nearby trees and waterways from the effects of beaver inhabitation.

“The problem with trapping or shooting beavers is it’s always a temporary solution,” says Ritter. “Beavers will travel to find suitable places, and they’re always going to show up again in good habitats.”

The best management practices depend on what problems beavers are causing, Ritter says. The two he sees most frequently are flooding and tree damage.

To protect trees, FWP recommends loosely wrapping trunks in wire fencing or hardware cloth. For smaller trunks, slicing a length of PVC pipe and wrapping it around the base of the trunk can help prevent damage.

There are also ways to allow the critters to go about their beaver business, while still preventing property damage or flooding. Flow devices can be installed in streams, especially near culverts or road crossings, to help mitigate the backing up of water due to damming. Ritter uses the brand name: Beaver Deceivers.

These involve threading a flexible tube through notches cut in a dam, then placing a cage around the end of the tube that prevents beavers from plugging the hole. Water flows through the dam and, in most cases, the beavers can still use their home as long as the level of the pond created is still deep enough.

WOW. Not only did he hold this reporters attention, deliver the right message in the right way. He made it sensible and memorable. He came with a good understanding of solutions. Trapping only works for a while. Solving the problem lets you have all these benefits longer. Torrey is OUR kinda guy.

In the future, Ritter says, there’s also a possibility of using beavers to aid in restoration of Montana’s river drainages. By building small imitation dams, planting willows and releasing beavers into an affected area, allowing them to simply do their job creates a double benefit: helping the beaver population to rebound and providing some relief and healing to damaged waterways.

When we reach that perfect beaver future, Torrey, with our clean water and many fish, plentiful flow devices and happy beavers, no one will deserve more credit than you Torrey, who has been such a bright knowledgeable voice in the wilderness.

Hmm, do you have any summer plans yet? Something tells me you’d be a hit at a certain beaver festival!


Dunawi creek is near Covalis Oregon and prides itself in being  a little more ecofriendly than other creeks. In 2012 it reported there was a beaver dam flooding out its ball-fields so it responded by installing a pipe to drain the dam!

(No, really)

Now they brought in an expert to do it even better, This year I’m told the lovingly named “Beaver strike team” partnered with Jakob Shockey of Beaver State Wildlife Solutions and the Benton County Public Works Department to install a flexible leveler. (Is it just me or does this photo look kinda like the cover of an epic romance novel?)

On January 17th, the Benton County Agriculture and Wildlife Protection Program (AWPP) partnered with the Benton County Public Works Department to fund the installation of a beaver pond leveler on Dunawi Creek.  The device should help reduce flooding of 53rd Street near the Willamette Pacific Railroad overpass while allowing beavers to continue to provide important ecological services.

 

The device was installed by Jakob Shockey of Beaver State Wildlife Solutions with help from members of the Benton County Beaver Strike Team.  Oregon State University Productions filmed the installation for inclusion in a future documentary film about beavers.

Whooo hoo! Hurray for the good folks at Dunawi creek, and hurray for Jakob Shockey, who met up with Mike Callahan at the last beaver conference I attended and decided to start a career. Let’s hope this conference sees many more such inspirations blossom across the west. All of a sudden I’m remembering a certain flow device installation that was helped out by our own public works crew lo, these many years ago.

Ahh memories!

Beavers were discussed briefly on the radio yesterday, not with much attention to their ecosystem services, but still in a mostly charming way. I thought you’d be interested in this report from WXPR Morning Edition.

A Glimpse into the Life of a Beaver

Different animals have different strategies for surviving the winter. In this week’s Wildlife Matters, the Masked Biologist gives us a glimpse under the ice to examine the habits of the beaver.

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