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

Category: Beavers and Insects


Another reason to appreciate beavers. Like we needed anymore. Reasons, that is, We need a TON more beavers.

Rare firefly spotted in Chimayó area aided by beavers, protected from cattle

Adeline Murthy was out in the foothills of the Sangre de Cristo Mountains identifying frogs when she spotted a single glowing firefly floating by.

“My first reaction was like, ‘Oh look a firefly, how pretty,’ ” Murthy, Santa Fe County’s Open Space and Trails senior planner, said in a phone interview.

It wasn’t until her colleague Peggy Darr, who was out with her that night, told her that fireflies are a rare sight in New Mexico that Murthy realized she had stumbled upon something special.

These small glowing creatures have taken up residence at the Los Potreros Open Space — which serves as the backdrop for El Santuario de Chimayó.

They are a part of a newly discovered species that has not been scientifically named but is unofficially called the “Rio Grande flasher.” These luminescent insects have only been documented in a few places in New Mexico, primarily around the titular river.

There is no photo of this rare dragonfly in the article. That’s because they’re so rare there’s no photo PERIOD. And hey  guess why this rare dragonfly suddenly have the freedom to appear?

Firefly experts say they made their appearance thanks to the county’s conservation efforts, which involved removing cattle from the area and the protection of its beaver population.

These unsuspecting rodents dramatically improved the area’s ecosystem and created a natural habitat for the fireflies, which need a permanent source of standing water to raise their larvae.

Well of course it does. Who could have doubted it? Now we just need a video of this flasher. I’m very very curious.


It’s Thursday and that’s just another day to celebrate beavers. Today some fairly local ones from Sonoma who are leaving their mark in the creeks and in the local news.

Beavers return to Sonoma Creek

It’s been a long summer of extreme drought conditions in Sonoma Valley. But in what seems like a steady stream of dire news for the local watershed the Sonoma Ecology Center finds one glimmer of good news stands out: beavers are moving back into Sonoma Creek.

The return of these charming dam builders isn’t quite breaking news – since 1993 beavers have slowly made a comeback in Sonoma Valley. But this year, in the middle of peak dry season, their increasing presence is something for celebration.

From the perspective of drought resiliency and water retention in our watershed we’re observing how beavers are a positive factor in keeping what water is in creek beds and reducing hydrological impacts of water rushing through the main stem of Sonoma Creek. Their natural impulse to build dams and create ponds is a major factor in retaining refuge habitat for species that rely on water to survive.

Isn’t it funny how one city sees beaver dams in its creeks and says “GOOD LORD we better kill those beavers fast!” And another city drolly describes them as “Charming dam builders” and starts listing all the good things they do? Well maybe not. Just listen.

Beavers provide refuge habitat for crawdads, California roach, Sacramento suckers, frogs and the endangered California freshwater shrimp which rely on deep pools and submerged, structural habitat like fine tree roots which are often present in the structure of a beaver dam. Any animal, insect, or crustacean that requires water to live in creeks is something that benefits from the damming that the beavers do.

UM, Beavers provide habitat for ROACHES? Are you kidding me? That’s the best you got? Not Steelhead or salmon or otters or great blue herons or wood duck but ROACHES???

There are some issues of note that can arise with the presence of beaver ponds. One such issue being a proliferation of water fern or duckweed growing over standing pools. However, it’s better to have water in the creeks than none at all, and these refuges of cold pools allow many species that can handle the duckweed a little extra room to survive a dire drought year.

In town, beavers can cause localized flooding and/or excessive soil wetness where development or agriculture have encroached upon low floodplains. All in all it’s a net positive to have beavers back in our Valley and making their mark on our watershed.

Yes they can cause problems, but on the bright side they make habitat for ROACHES so that’s a plus, right?

That is LITERALLY what I’d call “Damming with feint praise”. Someone needs to step up to their publicity team. Something tells me that this campaign is persuading no one.


So I started reading the usual praise in this article for beavers and all the excellent ecosystem services they provide. And then I noticed that the article wasn’t really about them. It was about Hydropsychid caddisflies. It turns out that these little guys are being researched because when they spin their silky webs to catch a meal the webs actually perform a stabilizing function on the stream gravel which makes it maintain a good spawning bed even during high flows. Think of it like a beaver dam for bugs.

Years ago I wrote a story about spiders that spun webs that saved the stream just as an allegory; Turns out it was prescient.

AUSABLE WATER WISE: Ecosystem engineers of the river channel

If you’ve ever seen beaver take up residence in a stream, you’ll know the incredible power they have to alter their environment. While it can be an inconvenience for landowners, the transformation from bubbling stream to mountain pond, to open meadow, and back into a stream long after the beaver has moved on is an incredible thing to witness.

Flyfishing anglers spend much of their time creating and using lures that mimic three major groups of aquatic insects: mayflies, stoneflies and caddisflies. They tie various flies out of feathers, fur, shiny threads and beads to imitate these flies’ underwater larval stages and the transitional form they take as they move from water to air as adult flying insects. These insects, because of their abundance, are prime food sources for freshwater fish. One particular family of caddisflies, however, have gained a reputation as ecosystem engineers.

What? Sending a bug to do a beavers job? Is this for real?

This locally abundant family of caddisflies, called the Hydrophsychids, spend most of their water bound time spinning nets of silk that they put out into the river current to catch drifting food particles. The silk is not as strong as spider silk but is strong enough to withstand high water velocities. It is a very efficient way of collecting food, so much so that this family of insects thrives in both wild and heavily human altered rivers. But the nets do more than just providing food for the caddisflies.

Recent research suggests that the Hydropsychid caddisfly family may actually be engineering stream systems. We already knew that their nets slow the water velocity just above the streambed. This creates suitable, lower velocity habitat for many other species of aquatic insects. Just like a beaver dam creates extra habitat for fish, amphibians, dragonflies, and birds, the Hydropsychid caddisflies open up more habitat for more diverse species to move in and shelter or feed from the faster currents. But wait, there’s more.

When these aquatic insects put out their silky nets into the current, the ends adhere to pieces of gravel on the streambed. Looking more closely, river ecologists realized the silk can actually hold gravel and cobble substrate together, preventing movement and erosion during moderate to high flow events.These nets actually stablilize the streambed.

Whoa. I need to sit down. This is fully blowing my mind. Millions of bugs making millions of tiny nets that act like beaver dams and slow down the water. I bet no one ever complains about them blocking culverts either! I guess those little flies are very important.

Good thing there’s so much research proving that beavers improve things for them.

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Yesterday I finally received the long-awaited email from Vistaprint: 50% off everything for 12 hours, Over the years I’ve gotten smarter and now keep designs stored in my portfolio for just this occasion. I bought plenty of signs for the festival at half price. We also decided to use the empty space in front of the stage by posting yard signs that describe the good thins beavers do – I checked with GLT and we can print those hear in town  for a oood price and use them year after year.

Here’s the first 2. I’m aiming for a dozen.

 

 

 

 

 

 

 

We also received the happy news that we were given Berkley Rep tickets for the silent auction yesterday, which is wonderful because it means we now boast tickets to ACT, CAL Shakes and Berkeley Rep for the theater-bidders at our festival, not to mention plenty of zoos and Safari West. Hopefully they’ll be something to appeal to everyone.

Also I got a nice note from the Quail newletter when i asked the new editor about slipping in something about the festival.

Heidi, I heart you so much. Loved your presentation; love your mission. For you, there is always room.

Lori Patel

Aw, that is so sweet, and so unlike the welcome the beavers usually get. Thank you very much for squeezing me in, That sure turned out to be excellent timing for the Audubon presentation – late enough to miss the rain and early enough to generate support for the festival.

Now onto today’s news bites, with an interesting report from Missouri state.

Biology Bears find a new home

A dozen biology students start their PhD programs this year.

This May at graduation, we say goodbye and congratulations to many of our students. You’re all off to bright futures. We hope we have prepared you for what is next. For 12 of our biology students, the future includes PhD programs.

I was particularly interested in this student;

Stephanie Sickler is a MS student that graduated in summer 2018 from Maher’s lab. She will be at University of Alabama, in the biology department. She starts this May as a research assistant and as a McNair fellow in August. She will study changes in stream conditions and fish and macroinvertebrate communities before and after beaver dam removal under PhD adviser Dr. Jennifer Howeth.

Goodness isn’t that interesting. I certainly know what I’d expect to find, and what existing research suggests, but it’s Alabama and I can’t help but think they’ll find exactly the opposite, I can’t think it’s  an accident she ended up in one of the most beaver-killing states in the country.

Still, i’m curious about Stephanie’s research. If she finds the opposite of what’s expected will she still pass her dissertation final orals? Or will she just be advised to stop collecting data before the good stuff comes in? If I had a mole in the Yellow-hammer state you can bet I would watch and see.

i can’t wait to find out I’m wrong.

 


Well yesterday was fun, with little messages of encouragement for our 10th year  from folks around the globe. Now it’s time to get back to work. You know what they say, before anniversaries “Chop  wood, carry water“, and after anniversaries”Chop wood carry water“. Or something like that.

Here are two articles that deserve our attention. I’ll start with the grating one first. Why is it every article written about Peter Busher annoys me more than it interests me? Over the years I have come to think he basically knows his beavers, but he honestly doesn’t seem to like them very much.

The Secret Sex Lives of Beavers

The population boom can raise alarms in communities. Beavers are often viewed as a nuisance, causing millions of dollars in damage each year by chewing fences, trees, and decks. They build dams, which leads to flooding of homes, crops, and railroads.

But some behaviors can be beneficial, says Peter Busher, a College of General Studies professor of natural sciences and mathematics and chair of the division. Beaver dam building expands wetlands, whose functions include filtering toxins from water, supporting biodiversity, and mitigating floods.

Peter Busher poses with beaver captured for analysis

Busher has been studying beavers for four decades and was the first person to track the animals by tagging them with radio transmitters. He does his research in the Quabbin Reservation in Central Massachusetts, where 150 to 300 beavers con­stitute the nation’s longest-studied population, says Busher. Hoping to learn how humans can better coexist with beaver populations, he examines mating habits, birthrates, group structure, and how the animals migrate from one area to another. His findings could inform deci­sions about how communities respond to beaver activity and manage the animal’s population, both in Massachusetts and across the country.

Although beavers are among only 3 percent of mammals that are socially monogamous, raising their young exclusively with one partner, researchers do not know much about their pairing behavior. Do the parents also mate with other beavers and raise a mixed brood, or are they sexually exclusive? Busher wants to find out. He suspects that genetically monogamous beaver populations—those that tend to mate with one partner—increase more slowly and may stay in an area longer. If one of these populations were removed because of nuisance activity, he says, the area would likely be free of beavers for a while. But if the population were more promiscuous, new beavers could move into the area at any time; communities would then need to develop a long-term animal removal plan.

Promiscuous beavers? Honestly? Is that honestly what you think? Who thinks like that? Have you looked at every OTHER variable in their habitat that might differ between various beavers to rule out that food availability, or population, or stream gradient and prove that these it doesn’t influence which beaver are promiscuous and which aren’t? I’m sure, as a scientist, you would do ALL THAT before LEAPING to the assumption that DNA is responsible. I mean this is almost like race research.

How much trouble would you be in if you were posing that certain ethnicitys were more promiscuous?

The best research I have read on the topic described beavers as “opportunistic monogomists” – meaning if the right conditions happened to arise they would take advantage of them and mate outside the pair bond, and if they never arose it would be mostly okay with it and get on with the business of taking care of the family. I remember being amused when Rickipedia commented that this was pretty much the same for most male humans.

But Dr. Busher is trying to prove that it’s a beavers genes that make him roam. So that those prolific beavers we can kill more, and the faithful homebodies we can work with.

Are you sure you teach in Massachusetts? Because this theory is starting to sound positively republican to me!


The article that really interested me today comes from the irreplaceable George Monbiot and discusses the use of better language about ecology to capture public interest. Rusty of Napa sent it my way and I’m glad he did.

Forget ‘the environment’: we need new words to convey life’s wonders

If Moses had promised the Israelites a land flowing with mammary secretions and insect vomit, would they have followed him into Canaan? Though this means milk and honey, I doubt it would have inspired them.

So why do we use such language to describe the natural wonders of the world? There are examples everywhere, but I will illustrate the problem with a few from the UK. On land, places in which nature is protected are called “sites of special scientific interest”. At sea, they are labelled “no-take zones” or “reference areas”. Had you set out to estrange people from the living world, you could scarcely have done better.

The catastrophic failure by ecologists to listen to what cognitive linguists and social psychologists have been telling them has led to the worst framing of all: “natural capital”. This term informs us that nature is subordinate to the human economy, and loses its value when it cannot be measured by money. It leads almost inexorably to the claim made by the government agency Natural England: “The critical role of a properly functioning natural environment is delivering economic prosperity.”

I’m fully on board with the need to use language that enlivens and engages us rather than regulates our attention. But sometimes we are talking to politicians or biologists and need to convince them, and we think that kind of language carries more sway? Maybe it doesn’t. Maybe the only thing that matters to decision makers is what we celebrated yesterday: public pressure and votes. So engaging the public is more important than sounding objective.

This is my FAVORITE part.

On Sunday evening, I went to see the beavers that have begun to repopulate the river Otter in Devon. I joined the people quietly processing up the bank to their lodge. The friend I walked with commented: “It’s like a pilgrimage, isn’t it?” When we arrived at the beaver lodge, we found a crowd standing in total silence under the trees. When first a kingfisher appeared, then a beaver, you could read the enchantment and delight in every face.

Our awe of nature, and the silence we must observe when we watch wild animals, hints, I believe, at the origins of religion.

Something about that sentence feels very, very true for this woman who spent so many years in the company of beavers. (Not that we were silent the whole time.) Our beavers had train whistles and garbage trucks to get used to, and could handle a little talking. But there was definitely awed silence at times. Like when kits emerged or when an uncommon behavior was scene.

And it sure felt like the very best parts of church to me.

if we called protected areas “places of natural wonder”, we would not only speak to people’s love of nature, but also establish an aspiration that conveys what they ought to be. Let’s stop using the word environment, and use terms such as “living planet” and “natural world” instead, as they allow us to form a picture of what we are describing. Let’s abandon the term climate change and start saying “climate breakdown”. Instead of extinction, let’s adopt the word promoted by the lawyer Polly Higgins: ecocide.

We are blessed with a wealth of nature and a wealth of language. Let us bring them together and use one to defend the other.

Thank you, George for another beautiful column. I’m envious of the people who got to walk alongside you on the way to see those special Devon beavers. We very rarely feel reverence for what we consume or eliminate as inconvenient. But I have seen it time again on children’s faces watching our beavers.

Maybe its reverence, more than science, that protects nature.

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