Category: Beavers and Frogs

Just Desserts for beavers

heidi08 Beavers, Beavers and Birds, Beavers and Frogs, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Creative Solutions, Educational, Environmental, Friends of Martinez Beavers, Who's saving beavers now? July 1, 2015

There are not one but TWO awesome pieces of beaver news this morning. I’ll start with the pièce de résistance, a phrase which literally means the thing with staying power. Because that’s what this is. Really.

Michael Pollock sent it to me yesterday on it’s glorious release. He said getting out 1.0 was grueling and he was still seeing typos, but he asked me to give him thoughts about 2.o down the line. Check out the title photograph for which it credits the Worth A Dam FOUNDATION. We would have liked Cheryl’s name too but I’m happy we got the website. And this is exactly the kind of place we want our photos to be. Just read for yourself.

Beaver as a Partner in Restoration

More and more, restoration practitioners are using beaver to accomplish stream, wetland, and floodplain restoration. This is happening because, by constructing dams that impound water and retain sediment, beaver substantially alter the physical, chemical, and biological characteristics of the surrounding river ecosystem, providing benefits to plants, fish, and wildlife. The possible results are many, inclusive of : higher water tables; reconnected and expanded floodplains; more hyporheic exchange; higher summer base flows; expanded wetlands; improved water quality; greater habitat complexity; more diversity and richness in the populations of plants, birds, fish, amphibians, reptiles, and mammals; and overall increased complexity of the river ecosystem.

It starts with a review of the hydromorphic and geological effects of beaver dams, then talks about filtration, groundwater and biodiversity. Honestly. for the beaver nay-eayers on your list, this is a big dose of science from the heavy weights FWS, NOAA, and USFS. Even if you can read nothing else, take a look at the first chapter because it says literally everything you know to win the next five arguments you have about beavers.

Chapter 1—Effects of Beaver Dams on Physical and Biological Processes

Beaver impoundments change the spatial distribution of water (groundwater, pond, or stream), as well as the timing of its release and residence time in the watershed. Beaver dams impound water in ponds and pools, and these impoundments slow the flow of the stream; this holds the water within the stream reach for longer periods and can increase base flows (reviewed in Pollock et al. 2003). Indeed, some perennial streams transform into intermittent and/or ephemeral streams following the removal of beaver dams (Finley 1937, Wilen et al. 1975).

Conversely, reintroduced beaver have transformed some intermittent streams back to perennial streams (Dalke 1947, Pollock et al. 2003), and recolonizing beaver have transformed slightly losing streams to gaining streams ((Majerova et al. 2015).

Honestly every ecologist and politician needs to read this from cover to cover. It ends with first hand case studies of watersheds where beaver were introduced. And describes the successes they observed. I already told Michael it needs a section on restoration in URBAN streams and he says he lobbied for its inclusion but was denied.Thus far. Another something for version 2.0.

At the end is a list of resources for answering any burning beaver question that might arise. And guess what’s first?

That’s right. Listed before the established forefathers of Beaver Solutions and BWW, the little upstart crows of beavers from martinez have first place in the queue. Along with the cover placement. We are the Alpha and the Omega of living with beavers. Could there be a better sign that we are doing the right thing? Not for me there couldn’t. (I mean another thousand readers couldn’t hurt, but I’d rather be the GO TO spot when folks have burning questions than anything else.)

Honestly the whole thing is such a useful, instructive, science-based labor of love that it will take me weeks to fully read. I did my best to splash its announcement around the four corners of the internet, but feel free to share with your unpersuaded friend(s) of choice. What a fine ending to June!

I think I’ll leave the DU article for tomorrow. But if you want a sneak peak here it is.

Understanding Waterfowl: Beaver Ponds and Breeding Ducks: Growing beaver populations have created an abundance of high-quality habitat for waterfowl

I sometimes get the feeling that we’re winning.

The ‘Art’ of beaver management

heidi08 Beaver Chewing, Beavers and Birds, Beavers and Frogs, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Creative Solutions, Who's saving beavers now? June 21, 2015

The Beaver Pond – Part 1

A beautiful, warm April afternoon proved an ideal time to visit the beaver pond and photograph the work that the beavers have done. The beaver dam shown here is reportedly 300 feet long. The pond is located on private land and is the site of a pond leveler, known as a Beaver Deceiver.

The sound of running water attracts the beavers who diligently build a dam, often blocking culverts. This in turn causes flooding of roads and areas during periods of high water.

To combat this without removing or destroying the beavers, a device called a pond leveler is put in place. The leveler is essentially a pipe positioned at a level that will allow the pond to drain when the water level is high. It’s a little more complicated than described above, but that is basically how it works. The payoff comes by allowing people and wildlife to co-exist while providing a pleasant area for walking, relaxing and wildlife observation.

Part 2 of the Beaver Pond to follow, showing the installation of the pond leveler.

If this story seems vaguely familiar, it should. This is the other side of Art Wolinsky’s condo pond in New Hampshire. He’s the retired engineer who used Mike Callahan’s DVD and advice to put in a pond leveler and save the beavers from being dispatched when they were blocking the culvert. He’s since enjoyed watching and filming the beavers and wildlife in the area wither using night cams or filming in person. Here’s some of his work that I gratefully use in my talks.

Someday we’ll have a beaver advocate in every state, who can describe why they’re important and document the good they do while showing how to efficiently solve problems. It will happen, trust me. Then they’ll be two in every state. Then five.

I’m going to go out on a limb and guess that Texas will be last, though.

Friends of San Pedro Valley are Friends of Mine.

heidi08 Beavers and Birds, Beavers and Frogs, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Creative Solutions, Educational, Festival, Friends of Martinez Beavers, Who's saving beavers now? June 7, 2015

What a fun night! It was warmer in Pacifica than we expected because the fog had not yet spilled down into the city. The drive was merciful and the ocean majestic. We slipped easily into the jewel of a park, nestled among steep hills, green with thick with alder and buckeye. A parking pass was provided at the gate, but we weren’t quite sure we were in the right place until we say the visitor’s center was plastered with signs about the beaver talk. Someone obviously had fun promoting this. I could imagine the classic Don LaFontaine voice in the movie promos, “In a world, where beavers don’t belong, and cities never want them, this unlikely family found their home.“

We met our host Carolyn Pankow and were taken inside where all the equipment was ready in the visitor’s center. Attendees trickled in at first, and then suddenly it was a packed room. Full of smart environmental folks, some of them who had seen the beaver in person or at least on TV. There was even a mother with two children at the back, so I made sure to keep things as engaging as possible. They laughed and groaned in all the right places, and afterwards I realized that my last two talks (salmon and trout) had been such challenging crowds I had forgotten how much fun it could be to talk to people that were really eager for beavers. There were about 45 people in the packed space.

Afterwards there were questions and praise, an honorioum for the talk and we were taken to an excellent companionable dinner at the local beloved Chinese place by the board of Friends of San Pedro Valley. They were all fascinating individuals, docents at point lobos or otter spotters for Elkhorn Slough. The myriad varied plates and ecological conversation passed around, and we delighted in each. They were especially eager to hear stories of nearby beavers to figure out how soon they could get their own. Then it was time for a moon lit drive bacl over the hills, along the coast and through the city to get back to Martinez at ten that evening. We had the familiar, pleasant feeling that we truly had been beaver ambassadors and paved the way for success when the lucky colony finally comes to town.

That’s the last talk of the year. Now it’s on the Beaver Festival planning in earnest!

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My mom called Saturday to say she had heard a clip about the beavers two times on KCBS radio. It was presented as a fun novella describing the soap opera story of dad’s remarry. Did you year it? A final note, I picked up this new photo from facebook where it was the winner of a Missouri wildlife photography competition for obvious reasons.

Now THIS is what we need in Martinez this year.

family patty bitterman — Photographer Patty Bitterman

Who are beavers helping now?

heidi08 Beavers and Frogs, Beavers elsewhere, Creative Solutions, kits, Who's saving beavers now? June 4, 2015

Beavers are the boyscouts of the animal kingdom. Why they’re practically helping old ladies across the street, and literally making new habitat for all. Now there’s some new research underlining the fact that they also play a very important role for amphibians.

Trends in Rocky Mountain amphibians and the role of beaver as a keystone species

Blake R. Hossacka, William R. Gouldb, Debra A. Patlac, Erin Muthsd, Rob Daleye, Kristin Legge, Paul Stephen Corna t

We used explicit dynamics models to estimate variation in annual occupancy, extinction, and colonization of wetlands according to summer drought and several biophysical characteristics (e.g., wetland size, elevation), including the influence of North American beaver (Castor canadensis). Although beaver were uncommon, their creation or modification of wetlands was associated with higher colonization rates for 4 of 5 amphibian species, producing a 34% increase in occupancy in beaver-influenced wetlands compared to wetlands without beaver influence. Also, colonization rates and occupancy of boreal toads (Anaxyrus boreas) and Columbia spotted frogs (Rana luteiventris) were ⩾2 times higher in beaver-influenced wetlands.

These strong relationships suggest management for beaver that fosters amphibian recovery could counter declines in some areasand demonstrate the close ecological association between beaver and wetland-dependent species.

The study discusses the grim fate of frogs in general, especially the drying species not lucky to live near a beaver dam. I’m pretty sure that if we cared as a nation about our frogs, (or our salmon) we’d protect beavers as the key player they are. Maybe even issue a frog-fine to folks who remove dams. We could use those monies to have a national scholarship for flow devices fund. Am I dreaming?

Another part of that big tree near the bank fell across the creek this week. turning our urban setting into a scene from the amazon. No piranhas but plenty of happy beavers making their way around the new food source. There were lots of visitors of the bipedal variety too last night, including a photographer from Bay Area News Group. Let’s hope beavers smile in the paper soon.

We counted at least four sampling the new tree, which wasn’t brought down by beaver, at least directly. Sometimes we saw several at once coming and going in every direction. No kits though, yet. Although I have to think they’re going to find this playpen pretty irresistible. The adults certainly did. Here’s nice glimpse of a beaver shaking himself as if to see if he’s dreaming at his crazy good fortune.

I think THIS windfall will take several days to finish, which means great photo ops for us in the meantime! In Napa last night Rusty was finally able to capture the two kits in a single shot, which confirms my earlier suspicion that one of the kits probably has the most adorable birth defect of all time. Either it will self correct or he’ll grow to be a very unique adult.

a tail study

And if you can’t spot the difference dramatically enough there’s always this guide. I think I’m going to call this image the “GREEN EYED SNAKE TAIL”.

What is in a name anyway?

heidi08 Beaver-themed merchandise, Beavers, Beavers and Birds, Beavers and Frogs, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Beavers or Social Ambasadors, City Reports, Who's saving beavers now? June 12, 2015

Beavers take over SPVP

Dr. Heidi Perryman will be at San Pedro Valley County Park Visitor Center on Saturday, June 6, at 6 p.m., for a talk she likes to call “Ecosystem Engineers in Martinez: understanding how and why to coexist with urban beavers.”

Beavers descended on Martinez in 2007, and by October of that year they had built a dam that the City Council determined could be a flooding hazard; the little dam builders were slated for extermination. Did the people of Martinez sit on their hands on this one? Come to the Visitor Center and find out about the story of the beavers in this Bay Area town.

Wow great start! So far I’m really impressed with this article that calls me Dr. and puts the story in context, making sure to give credit to the hundreds of concerned residents who made the difference! I’m sure it continues on in this wonderful vein, right?

Perryman is the president of “Give a Dam“, the citizens group that fought for the beavers. She is a child psychologist who’s probably naturally attracted to the problems of little creatures and says that she is used to speaking to a mixed age group; so bring your older children with you–probably age 10 and above. Dr. Perryman is part of the Occidental Arts and Ecology Center, where she helps investigate and implement social action for ecological health. She was also on the committee that first responded for action for the beavers after meeting with the city council back in 2007, and which eventually gave rise to the Martinez beavers’ website.

ARRRRRRRRRG! What a paragraph. Easily and verifiably wrong in so may ways. Why does the world seems so quick to change our name? When I contacted them about the press release the author explained she saw on the OAEC website this sentence:

“In 2012, Perryman, Lanman and Brock Dolman from the Occidental Arts and Ecology Center’s Water Institute wrote their first paper reviewing the evidence for beavers in the Sierra Nevadas.“

To wish I can only say, sheesh. Don’t colonize me with those your dangling participles! Rick and I were not from the OAEC (and by the way there was another author listed too). And as for the name of our ACTUAL organization – we aren’t stupid in Martinez. We know our city will NEVER give a dam. I have Ann Cameron Siegal to thank for this apt musical response.

On the “Worth a Dam” internet location you can investigate more about this industrious engineer: just how it contributes to the health of any area in surprising ways, why beavers are valuable to all of us, and where their original distribution was in California before these large rodents were devastated by the fur trade and habitat loss.

It’s a nice article and should bring a good turnout, which is good because Pacifica will have beavers of its own soon enough. And I can take a few moments to correct the misunderstandings. Of course I sent copies to the mayor last night, so he can see their publicity in action. Wish me luck. I HAVE to practice today. I’ve spent too much time lately mooning of the images of the Napa kits and wondering when ours will show. And yesterday I had an useful burst of beaver begging for the silent auction, where I found THIS wine label that made me laugh as hard as I can remember doing in a long while. I sure hope they donate.