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

Category: Beavers and Culvert Protection


They say an old chinese curse reads “May you live in Interesting Times“.

These days are horrifically interesting, and its up to all of us to live through them and make something better on the other side. I’m doing what I can of course, but life is very weird and unreal feeling. Case in point?

Yesterday’s conversation with Zane Eddy a Humboldt State Sociology Masters student who is thinking about doing his thesis on the Martinez Beavers story as a way to understand the overlap between wildlife management and social ecology. It turns out his advisor, Laurie Richmond, also on the call, runs this research lab.  

Human Dimensions Research Lab Humboldt State University’

Welcome to the website for Dr. Laurie Richmond’s research lab where student, faculty, and community collaborators focus on the human dimensions of natural resources with an emphasis on marine and coastal issues.

Of course it’s my considered opinion that the Martinez Beaver story is endlessly fascinating and that there could not possibly be a better way into the important nexus between beavers and humans than through our remarkable story. I tried to pitch it in a dispassionately convincing way that made the story sound intriguing and accessible enough to be studied. But I couldn’t tell if I sounded like a very compelling research subject or an just old kook who likes to talk about beavers.

The jury, of course, is still out on that one. I’ll let you know what they decide.

In the meantime there’s wonderful news from Maine of all places who it seems is coming to grips with culverts.

‘Beaver deceiver’ takes aim at rodent-related flooding’

WILTON – On Wednesday, employees of public works departments, land trusts and state agencies gathered on Bennett Road in a bid to outwit a common menace to culverts, trail systems and rural Maine roadways: the beaver.

A training opportunity hosted by Maine Department of Inland Fisheries and Wildlife biologists and the U.S. Department of Agriculture Wildlife Services built a water control structure at the intersection of Bennett Road and the Whistle Stop Trail. Consisting of a protective fence and incorporating a water leveling device, the structure is designed to keep the culvert that runs beneath the road from being blocked by the industrious rodents. Stretching off on either side of the Bennett Road are wetlands, thick with reeds and other aquatic plants.

The article doesn’t make it entirely clear who trained the training, but I do remember Skip Lisle doing to presentations in Maine last year so maybe he had something to do with this? This sure sounds like Skip.

A common response to a situation like the one on Bennett Street is trapping the beavers. While that can be a short term solution, Lindsay said, if the conditions remain ideal eventually more beavers show up. Additionally, beavers themselves are an important part of the local ecosystem: their dams help create and maintain freshland wetlands, which in   turn filter out sediment and allow microorganisms to remove pollutants.

Gosh if you’re heading over to see the fall colors it sure looks like its going to happen soon. I bet that water was a bit chilly!

This final photo just doesn’t look like either Skip or Mike had anything to do with it. I could be wrong but it seems like a Vermont state game design. For some reason they insist on reinventing the wheel even though the wheel lives in their own state, Well. we’re hopeful.

Even if beavers block the fence, the opening of the leveler is out of their reach, Lindsay said, preventing any flooding from overrunning the trail or road.Lindsay said that MDIFW and the USDA Wildlife Services offered the training last week to public works crews, MDIFW and other state wildlife agencies and land trust employees: all groups that may have to deal with beaver dams. Another, similar training will be held this week, on Thursday, Oct. 3, in Buckfield.

Um. Of course you realize if the beavers succeed at making a dam the pond will rise and that leveler will be in their reach, right? Well, good luck boys. Just promise me if this doesn’t work you will blame USDA and not flow devices, okay?

 


Don’t you just LOVE that beavers expression? He looks so pleased with himself. Like “Look at me, I’m eating a tree!”. How does he get these shots anyway? We never ever saw our beavers chewing down a tree and not even the homeless reported seeing it at night. They are pretty darn cautious when they do it. I guess he is crazy patient.

Do you think that little square at the top of his mouth is a tooth or a bit of woodchip that got stuck for the moment? It’s awfully big for a top tooth, and there appears to be only one of them? I’m guessing chip. At the bottom you can just see the ridge of his bottom teeth which in beavers are much longer.

I just think if you could show this photo to everyone seeking a depredation permit because beavers chewed their from yard maple, people would think twice about killing the animal for doing something that made him so very happy. And maybe feel proud that the tree they planted brought a beaver such joy!

Maybe if this photo was on a card CDFG could send them the first time they ask, with a caption on the bottom like

“Thanks for the memories”


If you live long enough, they say, you will see things that surprise you. Like this report from the Idaho Transportation District in Montpelier. It was even in the local news!

State agencies team to create a “beaver deceiver”

MONTPELIER, Idaho (KIFI/KIDK) – Two state agencies have teamed up to create what they’re calling a “beaver deceiver” at a wetland project near Montpelier.

An access road crosses a wastewater canal and creates a prime location for beaver dam-building, which in that location, creates roadway flooding that has become a recurrent problem for Montpelier based maintenance crews.

The team believes the fence shape increases the length a beaver would need to create a dam, making the location less desirable for building. Biologists hope that will encourage the beaver to build somewhere else.

They plan to monitor its effectiveness and durability over the summer. If successful, it could provide an inexpensive option to protect road culverts in other areas, while allowing beaver to remain in the area.

Whoa! If this is for real it’s a pretty big deal – Fish and Wildlife teaming up with the department of transportation to install culvert protection. but  we’ve been fooled before. Just because some one calls it a beaver deceiver doesn’t mean it is one. I wish they showed a photo of the finished product, because I can’t tell whether they’re actually doing this right.

It certainly sounds right.

D5 installs trial culvert-fencing exlosure to deter beaver-dam construction

Because funds are not currently available to replace the culvert with a different structure, ITD asked for advice on the problem from Idaho Fish & Game biologists. After discussing possible strategies, the two agencies decided to join forces to install a ‘beaver deceiver’ fence as an experimental project.

On April 17, the Montpelier shed crew and IDFG staff met at the site to install the trapezoid-shaped fence exclosure and discussed plans to monitor the effectiveness and durability of the structure over the summer.

Members of the Montpelier crew installed the ‘wedge’ fence and IDFG will add wire panels around the culvert inlet to complete the exclosure. The fence shape increases the length needed for the beaver to create a dam, which makes the location less desirable as a choice for building, so ideally, the beaver will move elsewhere.

If it works, the “beaver deceivers” would provide an inexpensive option to protect road culverts, while allowing beaver to remain in the area.

This is amazing. It sure sounds like they have the thinking down on this one. Even though we can’t see it I’m assuming it may have a chance. Stranger things have happened. And besides Mike Settell is just an hour a half away in Pocotello, so I’m assuming accurate information could be shared. I went hunting for more details in the DOT newsletter. This is my favorite part. Imagine this being in the Caltrans newsletter!

Beaver are important components of healthy stream-wetland systems in North America, yet they tend to dam culverts and can cause roadway flooding. The Montpelier maintenance shed spends much time and effort to keep the culvert clear.

Isn’t that very, very intriguing? So they installed a trapezoidal fence and are going to monitor to see if it protects the culvert and saves DOT money, and if it does the technique might be more widely used. That’s sounds so logical. What am I missing here?

i guess sometimes the big players really do the right thing?

Robin Ellison of Napa recently championed her way into the 2018 depredation permits for California beavers. 209 in all. I thought you’d be interested in the summary. Surprising findings include beaver permits issued for Monterey and San Diego Counties for the first time. Also the news that CDFW is officially keeping a spreadsheet of permits issued, although they either didn’t include the number of beavers allowed or they edited that part out before they sent it to her.

Looks like we still have a lot of work to do.

For those of you keeping score at home, Placer is still #1.


Time for some good news, this time from our friends in  Andover, New Hampshire who have worked hard to solve beaver problems the same way Martinez did: bringing in Skip Lisle.

SMALL TOWN, COSTLY PROBLEM

Andover sits at the base of Ragged Mountain in central New Hampshire. The town’s 2,500 residents value its rich network of streams, ponds, and lakes. So does a healthy population of beavers. Dams built by beavers in eight of the town’s road culverts were a perpetual problem. When dams plugged culverts, waters rose and flooded roadways. The heavy equipment required to remove the dams cost $125 hour. Clearing a single culvert often took several hours. Exhorbitant costs were also incurred to repair degraded roads.

This lovely handout was made by the good folks of “Voices of wildlife in New Hampshire.” It’s so well done that I’m just cutting and pasting to give you the idea. I will link to it at the end so that you can distribute if you wish. Remember New Hampshire is the home of our friend Art Wolinsky who has been persuading folks on the ground and helping VWNH when he can. It’s starting to look like a great place to be a beaver.

Hey I know that fellow! So do you! That’s Skip Lisle of Beaver Deceivers Int’l installing a beaver deceiver to protect those culverts. Nice to see a city that solves beaver problems the smart way.

CONCEPT PROVEN, CONFLICT SOLVED

With its roads and culverts safe from beaver damming and damage, the town will save a lot of money in coming decades. By choosing flow devices over traditional management, Andover expects to save approximately $130,000 over a ten-year period, and nearly $500,000 over a thirty-year period. Extrapolated across a given county or state, the potential savings represented by the use of properly designed, high-quality flow devices could be breathtaking. In addition, there are many nearby wetlands worth hundreds of thousands of dollars in ecological and hydrological services that would drain if beavers were killed and their dams not maintained.


I always thought that making culverts permanently ‘beaver proof’ was a no-brainer.  Heck why not even build them that way in the first place? I really love the handout. I just have a few criticisms. First off their name doesn’t appear on it, which is a mistake for something this sharp which is going to get shared why not brag? And secondly their prices estimates are woefully low. When you do the math, that graph only estimates about 100 bucks a year to clean those 8 culverts without Skips help. I seriously doubt that’s accurate. Do they never have to rent heavy equipment? Do they never have to pay overtime? Does it never require more than one visit or one employee? 100 bucks a year hardly pays for waders.

Glynnis Hood’s study of the costs save was much more convincing even though we know it was a very cautious estimate.. “Mitigating Infastructure Loss from Beaver Flooding”.

I guess our friends at VWNH were trying to be as conservative as possible, but even so the case if pretty clear. Fixing the problem for the long hall saves valuable funds, time and effort. Cities are busy. They have better things to do than clean culverts. Beavers are with us everywhere, and you won’t get rid of problems by getting rid of a few. Better to solve the problem for the long term.


Deal another hand at the beaver table, because Maryland’s own Ecotone just entered the game with full pockets.   Way back in February the CEO and founder of the group, Scott McGill, joined Mike Callahan and Frances Backhouse on an exciting podcast about beavers saving the Chesapeake. remember?

PODCAST: Can the mighty beaver save the bay?

 

Now their swanky eco-website has a whole new beaver management wing!

      

Ecological Beaver Management Solutions

The North American beaver is a keystone species whose activities promote ecological biodiversity across the landscape. Beaver dams help improve water quality by reducing sediment and nutrient flow to downstream sources, creates wetlands and enhances wildlife habitat.

Beaver activity on private and public property can become a nuisance, impact agricultural activities, flood infrastructure, and impact valuable vegetation.  In the past, trapping (killing) was the only available option to mitigate potential beaver problems.  By working with researchers and experts from around the US, we are able to offer an ecologically friendly beaver management solution by designing and installing custom flow devices (i.e. beaver deceivers) and culvert exclusion fences, providing a long term cost-effective solution. Ecotone installs flow devices to manage the size of the beaver pond, regulate water levels to desirable levels, and mitigate activity around culverts, while also keeping the dam, and the ecosystem services it provides. By working to co-exist with the beaver we can create a cascade of benefits to water quality and biodiversity. ​.

INDUSTRY PARTNERSHIP

. Ecotone has partnered with Beaver Institute – a nationally recognized nonprofit organization focused on beaver management and watershed restoration – to bring to market sustainable beaver management solutions that help resolve beaver-human conflicts and maximize the benefits beavers bring to the environment.

It’s wonderful to see the seeds of Mike Callahan’s beaver institute take root and grow into such a healthy enterprise. Beavers everywhere are thanking their lucky stars that Ecotone climbed on board, and Mike decided that being a Physicians Assisstant just wasn’t for him.NO

 

 

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