Category: Beavers and Frogs

Woodland Wilds and Wonders

heidi08 Beavers and Birds, Beavers and climate change, Beavers and Forests, Beavers and Frogs, Beavers and Ice, Beavers and Insects, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Educational, Environmental, Who's saving beavers now? January 31, 2017

I am tempted to tease the headline of this article as winning the prize for the single most consonance B’s ever in a beaver story, or mention that Capybara aren’t from Australia, but it’s a dam good article from a region where we have been short beaver support in the past. And authors don’t always get to pick the titles, and the paper is in Davis of all places. So I’ll politely refrain and just celebrate a wonderful article from our new best friend.

Tuleyome Tales: Big, burly beavers can be a boon

By Mary K. Hanson

Although some people consider them a pest species that causes temporary flooding of areas adjacent area to their home, the ever-active North American beavers (Castor canadensis) have actually been proved over and over again to be a boon to humankind in many ways.

In the past two or three years, projects and studies have been conducted throughout several Western states that conclusively prove that the beavers are actually 80 percent more effective (and less costly) at repairing and improving degraded stream systems than humans. And part of the reason for that is because the beavers instinctively know where the best places are to build their dams and lodges.

Beavers don’t kill the trees they harvest. Rather, they cut the trees down with their sharp incisor teeth to just above ground-level, leaving the root system entirely intact. In wildlife habitat restoration and management done by humans, this exact same process is call “coppicing.” The majority of coppiced trees don’t die; they instead grow new healthier shoots from the severed stump, providing for long-term regrowth and reforestation.

This is part of the reason why beavers are considered to be a “keystone species” in the environment: Their creation of new growth and water pathways and ponds actually increases the biodiversity in the areas in which they live.

What a great start! (Although I’m confused about the ‘past two or three years’ and think it’s been more like 2-3 decade.) But still. The article refers to Ms. Hanson as a ‘certified naturalist’ which I believe must mean that she completed the UCB program that our volunteers Deidre and Leslie did. Where means she studied with beaver guru Brock Dolman, which means she got an and unmitigated earful about the good work that Beavers do for us. Thank goodness. I love the idea of this article being printed in a paper from a region that depredates the second highest number of beavers in the state!

Studies have proved that where beaver dams are allowed to exist naturally, waterfowl and fish populations increase and become healthier and more diverse. In Washington state, for example, studies proved that beavers — which do not eat fish — were a benefit to local trout and salmon populations, increasing smolt production from about 15 individuals per range to 1,170 fish.

A similar effect on waterfowl diversity was seen in Wyoming, where it was shown that waterways where beavers were present resulted in a 75-percent increase in the number and diversity of ducks.

Other benefits afforded by beavers and their construction sites include:

* An increase in the variety of vegetation that enhances bird habitat;

* The removal of toxins from local waterways by filtering out sediments, phosphates and heavy nitrogen concentrations;

* A reduction in soil erosion, which can decrease flood dangers for people in surrounding areas;

* Helping to re-establish and increase riparian habitat, which also aids in the interception of runoff, increasing soil nutrients and providing habitat for a wide variety of plants and trees. Increased plant life has the added benefit of improving air quality as trees and plants naturally remove toxin form the air; and

* Because the dams slow down the flow of water near them they help to recharged spent aquifers (raising the level of water stored underground for use during drought conditions).

Be still my heart! Ms. Hanson is a friend of ours even if we never met! I’m thinking the nonprofit she works with (TULEYOME) might want to come to the beaver festival! They have a shiny new website and obviously have lots to share. I think they’d enjoy themselves at the festival, don’t you?

Beaver Fan Club still has Openings

heidi08 Beaver Behavior, Beavers, Beavers and climate change, Beavers and Forests, Beavers and Frogs, Beavers and Ice, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Creative Solutions, Educational, Environmental, featured, Who's saving beavers now? January 19, 2017

Ooh how nice to see the upcoming beaver conference get some positive press! I hope that gets many more curious people in the door.

Seven Feathers to host conference on beaver restoration

CANYONVILLE — Oregon’s official state animal, the beaver, plays an important role in the state’s wetland ecosystems. Those advocating for the beaver plan to convene next month for a series of presentations focusing on beaver ecology as a crucial part of threatened species recovery.

The fifth State of the Beaver Conference, slated for Feb. 22-24 at the Seven Feathers Convention Center in Canyonville, is meant “to provide an international venue for academia, agency and stakeholders together to disseminate information pertinent to beaver ecology,” according to Leonard Houston, conference coordinator and co-chair of the Beaver Advocacy Committee (BAC) of the South Umpqua Rural Community Partnership.

“We chose the theme of ‘agents of regeneration’ largely to highlight the role that beavers play both in natural regeneration, which is ecological succession, and designed regeneration, which is restoration ecology,” Houston said.

The nicest part about this conference, and there are many, is that the famous names you have been reading about for years here or elsewhere are walking or sitting right next to you. Or coming up to say ‘hi’ and ask

about your presentation. The truth is that it is both a blessing and unfortunate that the science of beaver ecology isn’t yet so advanced that names like Woodruff, Obrien or Pollock can send

their undergrads to do the presenting for them and report back if they find anything interesting. As renowned as they are, they have to do their reporting in person and are eager to share ideas and learn from each other. They’re even happy to hear what you have to say.

Admittedly,they are probably even happier if you invite them out for a beer to say it. (And happier still if you offer to pay for it. Government salaries being what they are.)

santa barbara dinner — Michael Pollock, Mary Obrien, Sherri Guzzi, Mike Callahan and Me!

The point is, I think this is a golden moment in time where beaver science hasn’t become dominated and controlled by lofty minds and big research institutions. You can contribute, you can interact. They need you! But already the world is starting to shift. More and more folk are interested in taking charge of the beaver meme, and it won’t be easy and collegial forever.

Beavers are getting so famous, you better come this year. Just to be on the safe side.

Christmas for Beavers

heidi08 Beavers and Forests, Beavers and Frogs, Beavers and Ice, Beavers and Insects, Beavers and salmon, Beavers and trout, Beavers and water December 25, 2016

Merry Christmas! The present I got you is one-of-a-kind and really hard to find. It’s a nice article from a property-owner who enjoys the beavers in his pond and is having fun watching them. No need to thank me. The look on your face is thanks enough.

A crash course in beaver denizenery

When three beavers in our Back 50 pond whacked their tales – in unison, no less – I was smitten.

***Beavers on the pond: When three beavers in Denis Grignon’s Back 50 pond whacked their tales – in unison, no less – he was smitten***

From my lawn chair on shore, they’re always entertaining. Industrious. Patient. Determined. Funny.

Hey, the internet is spotty in our parts and this is 4D TV – without the cumbersome pick-and-pay contract.

My recent fascination with them coincided with what would become our worst drought in decades. Our pond’s about the length of a football field – the larger Canadian field, fittingly, given its inhabitants, eh.

As the water level dropped drastically, it resembled a large puddle dotted with what appeared to be about a dozen beaver lodges. But were there really more lodges than in previous years? Or had the receding water simply made them more visible?

Ahh, Denis! I can’t tell you how refreshing it is to read about someone actually watching beavers instead of just trapping them because they’re a nuisance. He’s located in Peterborough, across Lake Ontario from New York. Maybe he has benefited from our friends in the area? I myself started watching beavers a million years ago because they were ‘cool’ to watch and I was curious about them. It opened the door for learning and helped me be forever hooked.

Seems Denis is watching them during a drought year, while the pond shrinks. This makes several other lodges visible that he hadn’t noticed before. He wonders whether more beavers move into a pond in drought and whether there will be competition.What he doesn’t realize, is that beavers don’t ‘go’ where there’s water, they more or less make water wherever they ‘go’. Beaver ponds in drought contained 9 times more water than equivalent ponds without beaver according to Dr. Glynnis Hood’s Alberta research. For the most part, the strange thing is he asks people who tell him the right answer. Go figure.

“You probably already know that beavers are territorial,” Lisa Soloman, a management biologist with the Ministry of Natural Resources (MNR), told me.

Uh, no. I didn’t. But go on, I pleaded.

“All beavers in a pond are related,” she continued, explaining that a pair will breed, keep their three to five “kits” nearby for about two years, then send them off to university or to teach English overseas.

So my pond is not overcrowded. And those additional lodges I thought I saw are, according a friend and hunter, merely failed construction attempts.

Is there anything, then, I can do to ensure a second season of my backyard reality TV?

“I would say nothing!” says Soloman. “This is how nature works. If the conditions aren’t good for them, they may not survive or they may disperse…But if it’s good habitat, new beavers can move in and claim the unoccupied territory.”

Wow, not only is Denis enjoying them now, he wants them to stay next year. I appreciate Lisa Solomon’s mostly accurate advice. But I disagree with one part. ‘Nature’ is no longer the thing that decides whether beavers will stick around or not. Human interest is. And if you’re happy to have those little flat-tails as your neighbors I would say the odds of them sticking around are very, very good.

You might also plant a little willow from cuttings around the pond’s edge. Good for the pond anyway and the beavers will help keep it thriving. Happy watching!

Speaking of beaver lodges, I thought this was a great photo of the one Suzi Eszterhas took in Napatopia. How’s that for ‘Nature in the City’? Happy Christmas!

Three states of why beavers matter

heidi08 Beavers and Forests, Beavers and Frogs, Beavers and Ice, Beavers and Insects, Beavers and salmon, Beavers and trout, Beavers and water, City Reports, Environmental, Who's Killing Beavers Now? December 19, 2016

Sometimes we get the faintest whiff of beaver benefits and actual solutions from sources you’d never expect. I think I’m a little like a mother who knows that her middle child isn’t the brightest bulb in the box and so reacts with extra praise when he gets the simple problems right. We want to encourage them, right?

Discover Nature and Evidence of Beavers in Your Area

This is the Missouri chapter of public radio, not an area usually known for progressive beaver solutions. So this quote at the end got my attention:

Beavers play a valuable role by damming backed up silt-laden waters and subsequently forming many of the fertile valley floors in the wooded areas of our continent. Beaver dams stabilize stream flow, slow down run-off, and create ponds which influence fish, muskrats, minks and waterfowl.

However, some landowners wish to protect certain trees from potential damage from beaver cutting. This can be done by enclosing the target trees with wire netting up to a height of three feet.

It must be the season. This article from North Carolina actually focuses on the benefits of joining BAMP (their beaver-killing club), but look at what it also finds time to include;

Rodent causes problems for farmers, residents and roadways

Beaver aren’t all bad. In fact, they can be responsible for some very diverse ecosystems. A 2015 PBS article titled, “Leave it to Beavers,” explains beaver dams as “Earth’s Kidneys.”

“Beaver dams and the ponds they produce act as filters, generating cleaner water downstream.”

One pond observed in Greene County, known as good duck hunting grounds, has a beaver family to thank. The dam extends several hundred feet across the mouth of a swamp creating a large, shallow home to waterfowl.

You heard it here, folks. Beavers aren’t ALL bad! Spoken like the most educated ecological mind in the entire state. Over the years I’ve become accustomed to the annual justification for BMAP printed in local papers. Usually they say something about how bad beavers are and what a cost-saving deal it is for the unlucky counties that are suckered into it.

Seeing the need for the management for the ever-increasing damage caused by the growing beaver population, State Legislative action created the North Carolina Beaver Management Assistance Program in 1992.

BMAP is a cost share program to aid landowners having problems with beaver damage. As of 2016, the cost share is a $4,000 per county contribution for annual membership.

The BMAP cooperative endeavor also receives funding from the NC Wildlife Resources Commission, NC DOT, USDA Wildlife Services and others.

Participation in BMAP is a county-by-county decision. Locally, Lenoir and Greene County participate, Jones County does not.

The total $21,800 set aside in Lenoir County for control and management (between BMAP membership and specialist) is an investment that pays dividends. Per the BMAP 2015 annual report, from June 2015-June 2016, beaver control prevented the loss of, or damage to, $262,140 in resources, including over $140,000 to roads and bridges alone. Efforts resolved beaver damage problems at 28 sites in the county, 13 were private landowners and 15 were Department of Transportation sites.

Of course, the more you use BMAP the more you NEED BMAP because of things like population rebound and short term solutions. Its a racket. Guess how much money BMAP spends on flow devices and solutions that will last longer than a season? I’ll give you a it, it’s a ROUND number.

One thing that confuses me in the article is this:

Also in the budget are funds to support a percentage of a Wildlife Beaver Specialist.

What percentage of the guy did you get? The part that goes over the fence last? Because I’d ask for my money back.

Hey, speaking of actual beaver specialists, and beaver benefits, NOAA just released its offical Oregon coast Coho Recovery plan. Which mentions beaver lots of times (by my count 227 times). Lots like this:

It even had time for the honorable mention of our noble friends in South Umpqua.

If you want to grind your teeth in envy that California is so remarkably backward that we just can’t have nice things, go read the report. It’s beaver-licious, and someday we might be too!

Riparian Ecology 101 and Beavers

heidi08 Beaver Behavior, Beavers and Birds, Beavers and climate change, Beavers and Forests, Beavers and Frogs, Beavers and Ice, Beavers and Insects, Beavers and salmon, Beavers and trout, Beavers and water, Beavers elsewhere, Educational, Environmental, Who's blaming beavers now? December 18, 2016

It’s hard to appreciate beavers in South Carolina. Even if you’re an environmentalist and teach riparian ecology, apparently. Sigh.

ECOVIEWS: A beaver dam could test your environmental conscience

Whit Gibbons

My first evidence of something unusual happening came in autumn after a month of no rain when I measured the water level. I do this at least once a week downstream from our cabin and was surprised to find that instead of dropping an inch or so, it had actually risen 2 inches. I attributed it to mismeasurement until I took my walk.

Beavers are unquestionably keystone species in a region with small to moderate-size streams. They not only modify the habitat but can also change the environment in ways that dramatically influence the lives of animals, including people, and plants.

Beaver activity can result in big trees dying from flooding and smaller ones being debarked for food or cut down for dam construction. A mile downstream from my incipient beaver dam a larger one has flooded several acres, leaving tall, lifeless sweetgum and pine trees that began life in a terrestrial habitat and cannot persist in an aquatic one.

Animals are affected, too. Large aquatic salamanders called sirens thrive and become more abundant in pools of a stream created by beaver dams. We once observed more than 500 sirens along the margins of a small stream when a dam was removed and the water level dropped.

Cottonmouths, watersnakes and turtles are more apparent, and maybe even more abundant, around beaver dams, which create areas for basking on sunny days. Waterfowl, such as wood ducks, are attracted to the pond created above the dam. Clearly, beavers and their dams set the tone of the neighborhood for many wildlife species.

So close. So very close. I feel we are standing at the very threshold of almost discussing beaver benefits – peering through the keyhole at the verdant green garden on the other side. But Whit isn’t wild about beavers. And he’s surrounded by UGA buddies who feed him bad information.

Beavers live 35 to 50 years in zoos and more than 20 years in the wild.

One of the conundrums with beavers is that their positive traits – being chubby, cute, industrious pioneers – aren’t always enough to outweigh less desirable traits. I know folks who have had beavers cut down a beautiful dogwood tree, flood an area intended for a garden not a fish pond and dismantle a wooden boathouse to build the beaver lodge. The predicament is how to keep beavers for outdoor show-and-tell yet not have them misbehave, from a human’s point of view.

An ecofriendly society will always face perplexing wildlife problems and environmental dilemmas. Entertaining, yet potentially destructive, beavers are a good example of the complexity inherent in environmental preservation, with no simple solution as to how to handle the issue. A range of responses are available for dealing with nuisance wildlife. Which solution people choose will depend in part on their environmental conscience.

Whit is a reflective and thoughtful man with an ecological conscience. He wants to appreciate the inherent coolness of beavers because it’s fun to see wildlife in his creek, but he doesn’t want to be flooded out for 50 years. What’s a good man to do?

When information fails you its time to get better information. I’m glad you asked. First of all beavers don’t live for 50 years. Who ever wrote that down was wrong and should have their credentials surgically removed. I did read a scientific report that identified one as 19 once, but in the wild 10-15 years is an astoundingly good run.

Secondly, if beavers are flooding an area you can’t live with then you install a flow device and make the water a height you can tolerate. Here’s a video that will teach you how to do it cheaply yourself. I know these things work because they solved our problem for a decade. The first flow device was invented in your own state! But this works better and is cheaper to install. Oh, and if the bad beaver is eating your dogwoods try wrapping the trees with wire or painting them with sand.

Beavers do cause problems. True. And cars get flat tires. We can fix them.

Why not just trap the beavers and get rid of them instead of fixing the problem? First of all you can’t, because more beavers will return to adequate habitat and you’ll be in this fix all over again in a year or a season. But more importantly all the wildlife that depends on the beaver dam will be lost if you remove the beaver. Meanwhile, that dam is removing nitrogen, letting trout fatten, filtering toxins, and regulating water flow which god knows you need in South Carolina and Georgia!

The article concludes by saying Whit teaches at the University of Georgia’s Savannah River Ecology Laboratory. I can’t think of a more useful place to start a conversation. Our retired UGA librarian friend needs to have coffee with him and nudge some useful information his way. Hey, maybe you could take this image into your classroom?