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

Tag: Keystone Species


Sad news yesterday in the field of ecology. Robert Paine passed away at the age of 83. If you don’t know why it matters, Paine was the one whose research originally coined the term “KEYSTONE SPECIES” in the late 60’s. Our friend the beaver would be called this without him! Thanks Robin of Napa for sending the article. I can only wonder what our bracelets would have looked like without him!

Bob Paine, ecologist who identified ‘keystone’ species, dies at 83

Bob Paine, an ecologist who conducted seminal experiments along the coast of Washington state in the 1960s, pulling starfish from the rocks and tossing them back into the ocean to demonstrate the consequences of disrupting an ecosystem with the removal of a single “keystone” species, died June 13 at a hospital in Seattle. He was 83.

Dr. Paine was regarded as one of the most significant ecologists of his era, a scientific ad­ven­turer who trekked across wave­-battered shores of the Pacific Northwest to observe, document and explain the forces that govern and sometimes upset the complex network of creatures in an ecosystem.

His concept of “keystone” species, named after the stone at the apex of an arch that supports the other blocks in the structure, refers most strictly to predators such as sea otters, wolves and lions with outsize influence on their communities. A groundbreaking idea when Dr. Paine introduced it in the late 1960s, the “keystone” species is today a fundamental of ecology textbooks.

Dr. Paine published his findings of the event, which he called a “trophic cascade,” in a now-classic article in the journal the American Naturalist, “Food Web Complexity and Species Diversity” (1966). Three years later, he introduced “keystone” species as an ecological term.

I actually had no idea that the concept of ‘trophic cascades‘ came first and from the same bright mind. Nearly everyone I meet trained recently goes out of there way to explain that the term ‘keystone species’ isn’t used much anymore and the field is more interested in ‘trophes’. Which, as it turns out, are all courtesy of Dr. Paine. Thank you so much for showing us the world and teaching us how it works!

Now I know we’re all feeling the burden of kit-season-without-kits of our own for the first time in a decade. So I thought I’d share a little Mountain House comfort with you for cheer. Caitlin was surprised that the beaver kit was out early an braver than his family, all of which Martinez has come to understand well over the years.

 


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The charms for the Keystone Species Activity arrived yesterday, and they’re another amazing job from Mike Warner at Wildbryde. Beautiful and generous as there are extras of everything. Children can earn charms for free with the help of Safari West Junior Keepers, and our stalwart volunteer Erika will help put everything together and make it into a necklace at the linking station. Check out our new beaver and water drop design!  This year we are taking pity on forlorn adults and letting them participate for a pittance of 10 dollars. I can’t wait to see visitors getting quizzed on why beaver matter. If you want to study ahead you can look here.

And as if that isn’t exciting enough, there are new splendors from our friends from Whitman college, this time with Sherri Tippie. They are heading for Martinez next and their podcast might be describing the festival and you!

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Click on the Keyhole to be taken to the Scottish National Heritage Webpage, home of the famed beaver trial. This is such a fun, interactive and educational beaver introduction I almost feel jealous, although I can’t imagine our well-appreciated charm bracelet activity didn’t spark some ideas along the way. Make sure you pay attention as you go through the entrance though, because it only does it the first time you visit. You will have to delete your temporary files to get it to play again. It’s a nice introduction to a pretty complex concept, well done team beaver!  I wish they specifically mentioned salmon, since that’s what all their anglers are afraid of – maybe showed a picture of one leaping over a dam –  but that’s just me.

Excellent beaver festival IV planning meeting last night. This year may well be the best ever, which is good because rumor is that beaver experts from at least three states are planning to visit and get ideas for how to launch a festival of their very own in their communities.


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The Beaver is often called a “Keystone Species”, but what does this mean? If we want to be good advocates of our beavers we should all understand this concept. It was introduced in 1966 by R.T. Paine who studied the impact of removing one predator from an ecosystem. (In that case a starfish) Starfish take mussels from rocks and the space they create can then be used by other species.

Paine found that the original 15 species community was quickly reduced to only 8 species when the starfish was removed, prompting his analogy to the collapse of an archway if a “keystone” is taken out. (The keystone is the center piece which holds up both sides of the arch) Beavers have a similar role because their dams create habitat which are used by other wildlife. They raise the water table, create richer sediment, alter the vegetation, and spur bushy tree growth by “coppice cutting” trees. By protecting one keystone species, you actually make conditions better for an entire eco-system of other insects, fish, birds and animals. By the same token, in removing one keystone species, you threaten the viability of an entire habitat. Just another reason why our beavers are worth fighting for.

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