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

Tag: Lorne Fitch


MIT continues to make great strides on beaver-inspired wetsuits.

Leave It to Beaver: Why a furry wetsuit could keep you warmer and drier.

Beavers and sea otters lack the thick layer of blubber that insulates walruses and whales. And yet these small, semiaquatic mammals can keep warm and even dry while diving, by trapping warm pockets of air in dense layers of fur.

Inspired by these fuzzy swimmers, MIT engineers have now fabricated fur-like, rubbery pelts and used them to identify a mechanism by which air is trapped between individual hairs when the pelts are plunged into liquid.

The researchers are particularly interested in improving wetsuits for surfing, “where the athlete moves frequently between air and water environments,” says Anette (Peko) Hosoi, a professor of mechanical engineering and associate head of the department at MIT.

Biologists had observed that beavers and other semiaquatic mammals trap, or “entrain,” air in their fur. But, as graduate student Alice Nasto notes, “there was no thorough, mechanical understanding of that process. That’s where we come in.”

The team laid out a plan: fabricate fur-like surfaces of various dimensions, plunge the surfaces into liquid at varying speeds, and use video imaging to measure the air trapped in the fur during each dive.

“We have now quantified the design space and can say, ‘If you have this kind of hair density and length and are diving at these speeds, these designs

will trap air, and these will not,’” Hosoi says.

Ah science! Working so hard to do what nature does without thinking. Not much new in this news, I admit, but I like the graphic. Given the temperature outside yesterday I can understand the need for really efficient entrainment.

I found out this weekend that Lorne Fitch from Cows and Fish is accepting our offer of a transportation scholarship and coming to the State of the beaver conference in February! Whoo hoo! The line up looks really grand with folks from Whales, Scotland AND Germany flying out to present their beaver work, as well as American experts like Suzanne Fouty, Mike Callahan, Damion Ciotti and um, me. I also found out that stalwart beaver champions Sharon and Owen Brown of Beavers: Wetlands and Wildlife will be presenting there. Which is wonderful because I always get a little tired of hearing about ‘beavers as a means to an end’ by Friday! The video below is theirs and narrated by Sharon. You should really think about being there. We’re renting a house so we’d invite you for dinner and everything.

I’m not sure what to think about the Whit Gibbons learning curve. He wrote back that he’d look at the website and I sent him all sorts of educational links. His column is obviously syndicated and has appeared in a few other papers. But today’s appearance bears this headline:

Beavers Make Great Neighbors

Same exact column, but this one is printed in New York.  Authors don’t usually pick the headline. So who knows what the explanation is?


It’s Monday, you have tons of Christmas wrapping and decorating to do, so you need this. Really.

cutest-kit-ever

Back when famed wildlife photographer was photographing our ill-fated baby beavers, she would Suzi at workhave to leave occasionally to go to Washington where Sarvey rehab facility had a very small baby beaver that she needed to include with the photos for the beaver story for Ranger Rick. I remember because in the beginning she talked about filming him in a ghillie suit because he shouldn’t learn to trust humans. The timing is right and I think this little guy was it.

Never A Dull Bling

I work at Sarvey Wildlife Care Center, a rescue and rehab facility for wildlife.

In May 2015, this baby beaver was discovered by some campers.  He was without his mother and too young to survive on his own, so the campers brought him to us.  We actually already had a female beaver with us who was rehabbing from an animal attack, and the two beavers were eventually put together.  The older female became a surrogate to the baby male. The two beavers spent a year with us.  This past spring they were both released, together, in a secluded area with lots of access to trees, water, and natural habitat.

Beavers play a crucial role in biodiversity.  Many species rely on beaver-created habitat, and a lot of these species who rely on beavers are threatened or endangered.  This year, the baby American beaver was made Patient of the Year at Sarvey. Ornaments and cards were made to celebrate this particular animal.

BENEFITS OF BEAVER PONDS

  • Decrease damaging floods
  • Recharge drinking water aquifers
  • Remove pollutants from surface and ground water
  • Drought protection
  • Decreased erosion

Sarvey does excellent rehab work and has earned a reputation throughout the world for their wildlife care. Aside from having the very cutest kit photo I have ever seen, they understand why beavers matter, which isn’t always the case. If you want to send them some love donate here because they deserve it.

Now there’s something that I’m even more excited to talk about. It’s an article in the very respected magazine Natural History that a beaver buddy alerted me to yesterday. The article is by Katy Spence and she obviously  spent some quality time with our beaver friends in Alberta with Dr. Glynnis Hood and Lorne Fitch of Cows and Fish. You can’t believe how great this article is. Guess what the title is. Go ahead, guess.

hydroDing! Ding! Ding! That’s the title I have been waiting for a decade to read! Somebody give Katy a Worth A Dam t shirt! Unfortunately the very impressive article isn’t online and doesn’t want to be shared with the likes of people who haven’t purchased a subscription, so it required stealth to obtain and sharing it with you requires stealth as well. I figured I’d put the cute baby photo on the top and all the copyright police would walk on by saying ohh, just some cute animal loving website; nothing to see here, move along.

Are they gone? Shhh. It starts with the account of Pierre Buldoc, who wanted to use beaver on is private land.

Sometimes called “nature’s engineers,” the North American beaver (Castor canadensis) is one of the few mammals — including humans — that substantially alters the landscape to suit its own needs. In fact, ecologists consider beavers to be a keystone species because their presence or absence will drastically change an ecosystem. With increasingly extreme weather events, ever-growing human populations, and declining freshwater sources, some beaver advocates believe the animals offer a vital, natural solution for retaining water in ponds and mitigating floods in other riparian ecosystems.

When Bolduc first proposed reintroducing beavers to the landscape, his neighbors — not to mention county officials — were not happy. Beavers had previously clogged a nearby culvert, which, in turn, often washed out the road. They were a nuisance, so the county removed them. Property values, crops, and roads in many rural areas have suffered damage from beaver construction sites. Sometimes, the territorial rodents will cut a favorite tree or even kill curious pets.

Yet, the rodents have had a tremendous impact on Bolduc’s pond. After approaching each of his neighbors individually about the beavers to convince them to try his reintroduction experiment, they eventually agreed. He even suggested an alternate solution for the county road: beaver-proof culverts. Unlike standard culverts, which run parallel to the water, these culverts are perpendicular — letting water rise into them like a straw in a glass. If the water gets high enough, it will drain through a connected horizontal pipe that runs underneath the road, preventing floods. Even when the beavers’ dam breached in May 2016 and drained hundreds of thousands of gallons of water, the culvert prevented a flood.

As climate change increases the risk of extreme weather events, some scientists are eyeing beavers as a tool for maintaining volatile watersheds. In 2008, Glynnis Hood, an environmental scientist at the University of Alberta-Augustana who specializes in wetland ecology and the impact of beavers, published a paper describing beavers’ unprecedented ability to mitigate drought. She and her team analyzed fifty-four years of drought data from Elk Island National Park in Alberta and found that where beaver dams were present, there was more water-up to nine times that of a pond or water source without beavers. Because beaver ponds are so much deeper than other ponds, water lasts longer, even in times of drought.

Hood has continued to examine the nuanced effect beavers have on a landscape, as well as how humans respond to them. She’s completing a study that compares costs of different beaver management efforts. The study will contribute to a larger project, called Leave it to Beavers, which aims to reduce human-beaver conflict. The Alberta-based, inter-agency effort uses citizen science to gather information about the long-term effects beavers can have on a landscape. The project is composed of several agencies, including the Alberta Riparian Habitat Management Society, a non-government agency informally known as “Cows and Fish.” Cows and Fish works with landowners and stakeholders to clarify how water flows through different landscapes, especially agricultural areas.

A riparian specialist for Cows and Fish, Lome Fitch, is trying to spark discussions about living with beavers. He offers a voluntary workshop on how beavers affect the landscape and how humans can peacefully coexist with them. He isn’t interested in pushing people to accept beavers, necessarily. He’s simply holding the door open. “You don’t bring people to the middle,” Fitch said. “You just start them thinking about where their position is and, hopefully, use that and expand their information sources. Maybe they’ll continue to migrate towards the middle.”

Fitch developed a ten-step list of goals, the first of which is building tolerance. Perhaps the most formidable step will be to change government policy in Alberta. The province has no clear policy concerning beavers, leaving confusion over what is permitted and what is not when it comes to relocation and rehabilitation.

The article goes into a full description of flow devices and how they work, and talks about how Glynnis and her students are using them effectively and teaching others how to use them. It even talks about how polarizing beavers are, Rachel Haddock of the Miitakis Institute calls them the ‘Wolves of the watershed’ because people either love them or hate them. Ahh! Sounds familiar!

Then it ends on this POWERFUL note.

If people are willing to compromise with beavers now, the result could be a new narrative in which humans and wildlife co-engineer a healthier, more resilient landscape. The big unknown is whether or not we can move past old assumptions.

That sure is the big unknown alright. But wowowow! What a fantastically public place to put this out there. We can only hope it gets read and circulated in all the right places. Lets hope someone leaves it on the governor’s desk right away. And decorates the halls of congress with it. And forces everyone waiting in line trying to get a depredation permit to read it. And if, btw,  you work somewhere someone needs to read it email me, and we’ll see what we can do.

 


Capture

 

This document is so packed with information it will take a while to upload but I thought it deserved to be browse-able. To  download your own go to their website. You won’t regret it!

Beaver-Our-Watershed-Partner-for-WEB

Incredible new achievement from our friends at Cows and Fish in Alberta. They are smart persuaders of beaver benefits for some pretty tough customers. And this really well-designed document covers all the issues and then some. Honestly, these are some of the finest beaver illustrations I’ve seen (besides Amelia’s of course!) I had to show you this one especially. Doesn’t that just say it all?

water graphicThe whole document deserves a solid read and reread on a rainy day by a window. Click here for the link to it on their website, and please pass it on!Capture

And just in case that news isn’t exciting enough, try this new research from the forest service, to be published next month in the Journal of Fresh Water Biology.

Beaver activity increases aquatic subsidies to terrestrial consumersCaptureSummary

Beaver (Castor canadensis) alter freshwater ecosystems and increase aquatic production, but it is unknown how these changes influence the magnitude and lateral dispersal of aquatic nutrients into terrestrial ecosystems.

We examined differences in abundances of dominant aquatic invertebrates, wolf spiders (Lycosidae), and deer mice (Peromyscus maniculatus), at beaver and non-beaver sites. We used stable isotopes to track aquatic-derived carbon in terrestrial consumers and linear mixed-effects models to examine the importance of beaver presence and distance from stream channel on the percentage of aquatic-derived carbon in terrestrial consumers.

Sites with beaver activity had >200% higher aquatic invertebrate emergence rates as well as 60% and 75% higher abundances of spiders and deer mice, respectively, relative to non-beaver sites.

More beavers mean more bugs. Haven’t I always told you that? The USFS has been kind enough to count how many. And then look at all the happy spiders and deer mice who get to eat them. Hurray! I can’t wait until the entire article is available but this is a great place to start. Thanks!

Yesterday we worked on the project for this year’s Earth day and made stencil’s for these. Jon was kind enough to model, but just imagine 100 kids walking around with these on the day. We just found out that two of our hearty regulars won’t be able to help out that day! Maybe you are free on April 23rd and want to honor the spirit of John Muir by helping beavers? If you might, email me and I’ll make it sound even better! It’s a beautiful day, lots of ecologically minded folks, and beaver-admiring children. Persuaded yet?

Recently Updated1

 


There’s very encouraging news out of Alberta this morning, where Lorne Fitch is holding an all-day workhop on beaver management and benefits. He’s the provincial riparian expert at the extremely beaver-progressive Cows and Fish  which has done so much for beaver education in the province.Capture

Beaver education presented by Lorne Finch

A May 21 workshop will help educate landowners, municipal officials and anyone interested in the impacts of beavers on the surrounding area will be held May 21 at the Cremona Community Hall.

 “Beavers bring challenges, but they also bring benefits,” said Finch. “The challenge is what is the balance between the two?”

The purpose of the workshop is to highlight the impact Canada’s national animal has on watersheds in the area surrounding Cremona, values beavers provide for the community and issues and challenges presented by beavers.

“It has become recognized by many ecologists that beavers are one of the tools that help us adapt to climate change,” said Finch. “We recognize that climate is changing, it’s becoming more variable and uncertain. In some cases the climate manifested as weather events (that are) quite violent.”

 Finch said beavers have helped maintain safety for communities whether there is a drought or a flood. In the case of a flood beaver dams help moderate or dampen flood flows, while during a drought they naturally help store water and controls the effects of low stream flow conditions.

One of the key segments that will be offered during the workshop offers insight to better understand beaver ecology.

A whole day of beaver education? Don’t you want to be there? Cows and Fish has made a name for itself by straight talking right to the ranchers themselves. They have done amazing job making the smart beaver research done by Dr. Hood and others available at the hands-on level.  They have a great relationship with the media and they know how to use it well, and are firmly committed to letting beaver do their restoration all over the province. This video introduces there long-term restoration goals, and is nicely done. (Even if it DOES sport a famous muskrat photo….sheesh.)

It’s hard to understand how such a significant beaver IQ could plummet so dramatically if the boundary is crossed into the next province over, Saskatchewan. 850 miles from the Cremona, the even less populated untown of Kellross is doing everything it can to get rid of beavers. (Everything it can without actually learning, I mean.)

 Beavers are a nightmare for some in rural Saskatchewan

 Provincially, beaver numbers are up as well. The beaver control program is an initiative of the Saskatchewan Association of Rural Municipalities, with help from the province.

In 2014, a total of 37,645 beaver tails were turned in — a significant jump (about 56 per cent) from the 27,653 beaver tails submitted in 2013.

Despite the aggravation they cause, Patterson still has a grudging admiration for the engineering feats, and stick-to-it attitude, of the beaver.

“They are good workers,” he admitted. “They’re hard workers that’s for sure. They don’t give up.”

For reference, the province is about 3 times the size of Texas. They are so notorious for beaver slaying that they were in the canadian version of Jari Osborne’s documentary. And I first wrote about them on this website in 2011 when I was prompted to create the famous ‘exploding beaver’ graphic.

exploding beaver The province has 22,921 square miles of water which means they killed 1.6 beaver per mile. Considering that the numbers of beavers went UP every year you’d think they start to consider that maybe this technique wasn’t working. Instead of just doing it more, they could actually do something different?  With population rebound being what it is this might not be the smartest idea.

Apparently there’s no danger of any thinking going on anytime soon. Guess what the numbers will be next year?

Yesterday I spent some time working on the handout for children participating in the Keystone Project at the beaver festival. They will each get a laminated copy to use and hopefully return it to me and take part in the survey we need to use for our grant. I tried to make it fairly simple and straightforward. What do you think?

laminated card

 


Continuing with our charmed beaver news cycle…

Farmers should welcome nature’s architect

The wetlands that result when beavers build dams contribute to higher water tables, which boost crop and forage production

“People are actually recognizing that beavers have some real attributes,” said Fitch.

“For example, they are a climate change adaptation tool, allowing us to start to adapt to the rigours of both floods and droughts. I suspect one of the other reasons is that they’ve just dropped below the radar.”

Cows and Fish has found that in addition to supporting greater biodiversity, beavers dams and the wetlands they’re part of can contribute positively to agriculture through higher water tables that result in greater crop and forage production.

 “This becomes pragmatic good business, managing those riparian areas, because of their inherent productivity,” said Fitch.

 “These are the deepest, richest soils within a ranching or farming unit. They’re sub-irrigated, and so these produce the most forage.”

“Especially during drought conditions, because these are reservoirs, and if there’s enough beavers at a landscape scale to provide the storage volumes, they can help us work our way through the ravages of drought.”

Another great beaver article! Cows and Fish is doing amazing beaver work in Alberta. They are really changing the landscape of attitude toward beaver. But you can see it’s still a hard sell. The article takes a break from proclaiming their value to write about the BOGUS research that says beavers are contributing to climate change. Sheesh.

In a study published last year, University of Saskatchewan researcher Colin Whitfield found that the footprint of beavers is growing across the three continents they inhabit.

 It also found that plant matter collected in these shallow ponds contributes 200 times more greenhouse gases and methane from beaver ponds than in 1900.”

ohhhhh puleezee…….

Yesterday’s tree planting was a grand success, Ann Riley decided to join the watershed interns and lend a hand  as did our own Lory, Cheryl and Jon. Channel 7 news showed up to film the start of the day and some RCD members at lunch at the creek monkey decided to pitch in. The story was on at 6 last night, which was very and a pleasant change from the latest Martinez appearances.  50 stakes were planted in the block between Marina Vista and Escobar. Jon wrapped 12 of them and will do more soon.

Good work all! And special thanks to Riley for making it happen. Hopefully the odds will be in our favor. Willow is very powerful, but tell mother nature to rain soon, will you?

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