May - June 2020 Newsletter
We're just about five months since the recent day the Earth stood still. For those of you who may not remember the 1951 movie, it was about an alien visit that disabled all the machines on earth to warn humanity to turn away from its suicidal course - or else.
Back then oblivion was nuclear war; in a later 2008 version, it was environmental destruction. Well, we have met the aliens and they are us. And apparently we still haven't made up our minds about whether or not to go extinct.
As we noted in the March-April newsletter, the messenger this time came from inner space, and was a virus that was entirely home-grown. More insight on that in this issue from permaculturist William Horvath, and in an excerpt from our upcoming July 2020 Compendium.
Of course, dear reader, I would never abandon you to doom and gloom, so there's plenty of good news here, along with the collection of inspiring insights from our wonderful Blessed Unrest conference.
The times they are a-changin', and out of our present chaos and suffering, there emerges great hope!
Very best wishes, Adam Sacks, Executive Director
Events:
In this issue:
Growing a Future for Life on Earth
Conference videos and supplementary material now online on our Program page.
Here's the really good news!
Thousands of independent organizations and millions of individuals worldwide are restoring life on Earth, and we need you too!
Our Speakers: Ellen Bernstein, Alfred Brownell, Roland Bunch, Rachel Burger, John Burkhardt, Arielle Martinez Cohen, Iona Conner, Cynthia Contie,Ronnie Cummins, Rev Dele, Anna Gilbert-Muhammud, Christopher Haines, Claire Hedberg, Hayat Imam, Jan Lambert, Susan Jennings, Jim Laurie + Kids, Elizabeth Monson, Holly Paar, Precious Phiri, Sven Pihl, Nick Rabb, Florence Reed, Janot Mendler de Suarez, Pablo Suarez, Adam Sacks, Steve Weinberg
Our Compendium Editor Revisits Miyawaki Forests A full-grown Miyawaki Forest in India Photo: Afforestt Hannah Lewis, Bio4Climate's stalwart Compendium editor, has entered the international writing scene by publishing an excellent article in The Guardian on the Miyawaki forests sprouting up around the world. These small forests (the size of a tennis court) grow quickly, have more than thirty species of indigenous trees and plants, and provide urban homes for biodiverse beneficial birds, insects and animals. Hannah is organizing her small city in northern France to grow them too, and the community has become very interested. Afforestt, an organization in India, is a primary Miyawaki promoter, and encourages you to grow a forest of your very own. Along with expert consulting, they offer generic instructions here, but of course you'll have to figure out exactly which species belong in your urban forest habitat.
William Horvath and the Promise of Permaculture As a child in Croatia, William Horvath worked on his grandparents’ farm, living close to nature. At the time it was a hard life that he wanted to leave behind. He went to university to become a geologist and emigrated to Australia. He found it interesting and challenging work, but he began to miss the natural world of his childhood. “I was just searching for gold and silver, and deciding which part of nature to destroy,” he says. While in Australia, William discovered permaculture, the land where it began. He traveled around the country, met pioneer David Holmgren, and learned that permaculture wasn’t just about agriculture, it was a whole lifestyle, a new worldview. At first he was overwhelmed by the abundance that permaculture had to offer, but as he sorted it out it became clear to him what was next. In 2014 he quit geology and took his savings to return home to his grandparents’ land.
William Horvath's Permaculture Farm in Croatia
He says, “It’s easy for me to write something and share it. I write for someone, choose a person to appeal to, someone who wants to do something for their land. Writing for what I myself would need in that situation. I learn something, write something, teach something - in a sense I’m writing an instruction manual for myself. But I also like to probe deeper into the system and help people deal with society as it is right now, and find security in an uncertain future. Mostly I write material that I would have liked to have had for myself that wasn't available to me. Solving my own problem by sharing with others, knowing other people have same problems that I do.
Compendium Notes
This is an excerpt from our Compendium of Scientific and Practical Findings Supporting Eco-Restoration to Address Global Warming. The article below is from our seventh issue, to be published in July 2020, Vol. 4 No. 1. We're pre-publishing it here because of its relevance to the Covid-19 pandemic. Note that this paper, as well as many other pandemic-related papers in this issue, were all published prior to the current global episode. Many experts knew this would happen, but we didn't pay attention. "Impacts of biodiversity on the emergence and transmission of infectious diseases," Keesing et al. 2010
This paper contextualizes reduced transmission of infectious disease as one of the many ecosystem functions provided by biodiversity.
"Changes in biodiversity have the potential to affect the risk of infectious disease exposure in plants and animals—including humans— because infectious diseases by definition involve interactions among species. At a minimum, these species include a host and a pathogen; often many more species are involved, including additional hosts, vectors and other organisms with which these species interact."
Changes in biodiversity affect infectious disease transmission by changing the abundance of the host and/or vector; the loss of non-host species may increase the density of host species, increasing the encounter rates between pathogen and host.
Often, the species that remain when biodiversity is lost are those which are better pathogen hosts, while the lost species tend to be more resistant to infectious disease.
"In several case studies, the species most likely to be lost from ecological communities as diversity declines are those most likely to reduce pathogen transmission."
For example, the white-footed mouse, which are high-quality hosts both for the bacteria causing Lyme Disease and for the tick vectors, are abundant in both biodiverse systems and impoverished systems, while opossums, a poorer host for the Lyme bacterium that also kill/eat most ticks attempting to feed on them, do poorly in lower-biodiversity conditions.
"Therefore, as biodiversity is lost, the host with a strong buffering effect—the opossum—disappears, while the host with a strong amplifying effect—the mouse—remains."
There may be a causal link between a species’ susceptibility to biodiversity loss and its quality as a disease host. Among vertebrates, "resilience in the face of disturbances that cause biodiversity loss, such as habitat destruction and fragmentation, is facilitated by life history features such as high reproductive output and intrinsic rates of increase. Vertebrates with these features tend to invest minimally in some aspects of adaptive immunity; we hypothesize that this may make them more competent hosts for pathogens and vectors."
Biodiversity also affects the emergence of infectious disease, such as the evolution of a new strain of pathogen in the same host (due to antibiotic resistance, for example), and the spillover to a new host species. Pathogen establishment in humans from other animal hosts is related to mammal species richness (a larger source pool), and land-use change (such as deforestation), which increases contact between humans and pathogen hosts. The pathogen then becomes an epidemic due to the new host species’ density (domesticated animals and humans).
The authors recommend preserving biodiversity by protecting natural habitat, while also preserving microbial diversity within organisms by limiting the use of antimicrobial agents. A diverse microbiome within an organism serves as a buffer against pathogens.
Last But Not Least. . . You're concerned about the current state of the Earth, and we are working for you, our young people, and the diverse web of life we all rely on.
Not to put too fine a point on it, we just want to say that we're a small non-profit doing BIG things.
Your support and involvement are very important! Please . . . . . . and a monthly donation is easy on your budget but is a major contribution to our work.
Many thanks!
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