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

Tag: Bob Armstrong


Lory came back from her Alaska trek this weekend, and brought lovely photos of her adventures. She had a nice meeting with Bob Armstrong and Mary Willson who worked together to produce the beavers of Mendenhall Glacier book. She was a little sad for the hardworking beavers, since volunteers have been avidly removing dams every time they’re built for the past three years. Wow. What a battle of wills! I bet I know whose would last longer.

The good news is that Mike Callahan trekked out this summer and do an assessment of 19 problem sights. So once they work out the financial details, he’ll come back and the beavers will get to enjoy actual fruits to their labors. Check out the gnawed trees in her photos. That’s some serious chewing.

The other great thing about her trip was hiking out to Horseshoe Lake at Denali National Park to see if she could some some actual beavers. What a great treat to see them in this massive lake at the foot of lovely mountains. Check out the photos here and plan your trip soon.

We wanted to share with you the amazing experience we had with the beavers at Horseshoe Lake. Martinez should be very proud that our beavers have come to live here.  When you see beavers out on a beautiful pond surrounded by beautiful mountains in a clear lake, it does make you wonder why our beavers have chosen our little creek with all its garbage!

Ahhh, some people spend all their money to move into nice houses with glorious views, and some move into fixeruppers and take a transformational journey while they work on developing them into landmarks.

Our beavers have vision!

[youtube:http://youtube.com/watch?v=WTNegWBCxLI]


I always remember enjoying my astronomy class. I liked staring up at the constantly rotating planetarium ceiling, and I liked writing notes with a flashlight. I even enjoyed the weird math procedures necessary to add hours of ascension, which is almost unheard of in my “math is hard” brain. I remember one night the teacher telling us to look for the nebula near the spiral and me whispering to my classmate in a panic “What’s the spiral?” Was he referring to our galaxy? Some weird space shape newly documented? We generated anxious questions along the whole back row until a very calm person in front of us said that by “spiral” he was referring to the binding of the notebook.

Oh.

Anyway, notwithstanding that memorable bit of panicked stupidity (or perhaps because of it) I liked astronomy. I especially liked the idea that certain constellations, like the big dipper, were “circumpolar” meaning if your latitude was high enough they never set at all for you but simply rotated around the sky like the lable on a record. I mention this because one of our most important beaver friends, Mike Callahan of beaver Solutions, is this very day in Juneau Alaska under a circumpolar (but very rainy sky) and getting ready for some beaver management training next week.

You’ll remember that Bob Armstrong got together a group of volunteers to work on keeping the pathways and culverts clear when some Mendenhall Glacier beavers started to outwear their welcome. Like all problem solving involving beavers, the only solution offered was the final solution, and Bob wasn’t willing to let that happen. So he and a group of scrappy beaver-saving friends showed up on weekends to mitigate the damage. I read about this wildly familiar dedication and wrote Bob to start a dialogue. I learned that their primary concern was dealing with the beavers in a way that did not block salmon passage. I put him in touch with Skip Lisle and Mike Callahan, and talked about solutions.

Mike and Bob talked about beavers and big pictures and longer term solutions that helped, rather than hurt, salmon. They arranged for Mike to come to Juneau this week, and he’s even staying in Bob’s home and getting the inside view. Two weeks before he was leaving he got word that he had received the AWI grant, and agreed with my suggestion that Juneau training would be an ideal place to film, so his videographer friend is coming with him and will catch the training for posterity.

In the meantime beaver friend LB is happy to hear that Bob is a nice guy in person because she’s meeting him for a blitzkreig beaver tour of the Mendenhall Glacier when she visits Juneau next month.

Just in case you forgot the lovely view those beavers wake up to each evening, here’s a reminder. Imagine this with dripping rain and 50 degree weather and you’ll have some idea how it looks to Mike right now.

Photo: Bob Armstrong from The Mendenhall Glacier Beavers


One can only write so many BBQ-beaver/better-kill-them-my-basement’s-flooded posts before one feels ready for some dam good news. Fortunately, the internet(s) provide. How about this story, published yesterday in the Burlington Free Press about the ecological value of beaver dams and their vast superiority to the water-blockers man creates?

It’s not a far stretch to suggest that the earliest North American humans learned how to dam streams by observing Castor canadensis — the common beaver.

Apparently beaver dams are better for the environment because they are made of biodegradable materials and allow seeping water to be filtered and stored.

Twenty-first-century ecologists say our engineers’ efforts continue to fall short of the large rodents’ long-term view of habitat health.

The best part is that these alarming words of praise come from Ron Wentworth of F&G (which apprently in this case does not stand for “factless” and “gullible”!) He says beaver dams are good for trout and water quality.

Upstream fish migration: Allowed by seasonal overtopping and periodic wash-outs.

Water quality: Formation of pollutant-filtering wetlands upstream, and gradual release of sediment, nutrients, and debris downstream create healthy, “porous” habitat.

Biodegradable and recyclable: Beavers abandon their dams when food sources decline. Several years later, as plant diversity rebounds, beavers will return and engineer another stream cycle.

That’s some mighty sweet talk about beavers! Remember this is from Vermont, so we can assume Skip spent hours educating F&G about their particular value in the habitat. Good work all! And let’s hope beavers get to build their special dams in every town soon!

Dam in Progress at the Mendenhall Glacier: Bob Armstrong Photographer

By the way, remember this photograph and our friend Bob Armstrong? Worth A Dam’s Lory Bruno is heading to Juneau soon and will meet up with Bob and tour the beaver habitat. I told her we want an “eyewitness account” for the blog!


This lovely photograph was kindly shared by photographer Bob Armstrong and appears in his remarkable book “The beavers of Mendenhall Glacier“. He and his colleague, Mary Willson, spent a summer waking up at 4 in the morning to be there at first light and catch these glorious images. You remember that he was involved in the heroic citizen effort to manage destructive beaver behavior without killing in Juneau, Alaska. I tracked down Bob and put him in touch with Mike Callahan of Beaver Solutions, who will be heading out there this fall to help with a comprehensive beaver management plan.

While I was devouring Bob’s detailed descriptions and lovely photos, I came across this shot of a newly started beaver dam facing the breathtaking Mendenhall glacier. I was prepared to beg, purchase, plead and cajole for access to this lovely image, but Bob kindly volunteered and promised to send me a hard copy as well. One of the nicest things about the book, (besides its advice about photographing beavers, its keen awareness of their habits, and an amazing tailslap shot that has our own Cheryl Reynolds green with envy),  is its photographic documentation of varietal feeding in beavers. He offers images of them eating pondweed and horsetail, and its great to see the complexity of the beaver diet.

After you consider the beauty of this photo (and get off the phone with your travel agent) you might enjoy this video I made after our helicopter glacier trip two years ago. (mybluehouse is my nonbeaver-youtube account…) At the time it inspired me to think that in traveling home from Juneau to Martinez I was retracing the steps of John Muir!

[youtube:http://youtube.com/watch?v=0v28YCLlJgA]

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