#8 – Saving A Valley: How Coyote Valley Inspires Conservation

Coyote Valley from Máyyan ‘Ooyákma (Coyote Ridge), with Tule Elk. Photo by Michael Hawk

On a 1983 morning, Steve Jobs scouted Coyote Valley for Apple’s new headquarters. Despite his plans, Coyote Valley remains one of the most important undeveloped landscapes near Silicon Valley.

This episode tells the story of its conservation through unexpected alliances, resilience, and the invaluable ecosystem services it provides. From critical wildlife connectivity to indigenous cultural significance, discover how perseverance and community action can protect cherished landscapes.

Join host Griff Griffith and our guests, Andrea Mackenzie, Amah Mutsun Chairman Valentin Lopez, Megan Fluke, Nick Perry, and Dr. Stuart Weiss as they provide unique and inspiring perspectives as they explore how to protect and steward unique lands like Coyote Valley, whether near Silicon Valley or your own backyard.

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Links to Topics Discussed

Amah Mutsun Land Trust

Amah Mutsun Tribal Band

Cars, Cows, Checkerspot Butterflies – Dr. Stuart Weiss’s paper

Creekside Science

Green Foothills

Obi Kaufmann

P-22, The Mountain Lion of Hollywood

Santa Clara Valley Open Space Authority

Wallis Annenberg Wildlife Crossing

Related Podcasts

Additional Credits

This podcast episode was written and produced by Michael Hawk. Our host and co-writer is Griff Griffith.

Some of the music used in this production is through creative commons licensing:

The following music was used for this media project:
Music: Joyful Waltz by MusicLFiles
Free download: https://filmmusic.io/song/6600-joyful-waltz
License (CC BY 4.0): https://filmmusic.io/standard-license

Music: Suvaco do Cristo by Kevin MacLeod
Free download: https://filmmusic.io/song/4449-suvaco-do-cristo
License (CC BY 4.0): https://filmmusic.io/standard-license
Transcript (Click to View)

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[00:00:00] Griff Griffith: On a crisp morning in 1983, Steve Jobs was on a mission.

[00:00:09] A helicopter carried him high above the rolling green hills just south of Silicon Valley as he searched for something that would change the future of Apple computers.

[00:00:20] With him was an Apple Vice President and a real estate consultant. Their objective? Find a new headquarters for the rapidly growing computer company.

[00:00:29] Jobs had found his site, the lush grasslands and oak savanna covered hillsides of Coyote Valley.

[00:00:36] Griff Griffith: Soon after, Apple owned the land and it looked like the headquarters project was off and running.

[00:00:42] Andrea Mackenzie: the Coyote Valley landscape has captured my heart.

[00:00:46] It’s

[00:00:46] a, in many ways, a forgotten landscape, a tortured landscape, and yet it survives and keeps coming back time and time again. It’s showing that resilience for nature and resilience for people.

[00:01:00] And turns out that the Coyote Valley is one of the most important undeveloped valley floor landscapes in the entire San Francisco Bay region. And so each day we’re discovering more and more about why this kind of a place adjoining the 12th largest city in the nation is so very important.

[00:01:20] Griff Griffith: , Andrea McKenzie is a general manager of the Santa Clara Valley Open Space Authority, an organization that stewards much of the land in Coyote Valley.

[00:01:29] Now you might be wondering how she can refer to the space as undeveloped when a tech giant like Apple , with a driven and unstoppable leader like Steve Jobs was intent on developing it.

[00:01:40] This is an amazing story of an incredible land with equally incredible history.

[00:01:47] Chairman Lopez: And if you look west , you would see the peaks of the Santa Cruz Mountains, and one of the tallest peaks. That’s Mount Umunum, and that’s the location of our creation story .

[00:01:56] Griff Griffith: And the story of what happened to Coyote Valley is full of unexpected alliances.

[00:02:01] Megan Fluke: I jokingly suggested that he should start donating to, uh, support all of the work that they were creating for me and the team. well, wouldn’t you believe it? they’ve been an annual donor ever since

[00:02:13] Griff Griffith: A little luck.

[00:02:14] Stu Weiss: one of the things I noticed is that every time a coyote valley development started getting some momentum the economy would crash or there’d be a tech crash, and the plans would go away for a few years.

[00:02:27] Griff Griffith: And Incredible Perseverance.

[00:02:29] Megan Fluke: yeah, it was hard. But at the end of the day, we were working in community

[00:02:34] Coyote

[00:02:34] Griff Griffith: Valley’s Story is one of hope and inspiration and it’s a model for nature conservation of all kinds.

Theme Music Here

[00:02:40] Griff Griffith: I’m Griff Griffith, and welcome to Jumpstart Nature Okay. You’re here listening to Jumpstart Nature. That tells me one thing. You are a nature lover., and I bet there’s a landscape near you that you absolutely cherish.

[00:03:09] It might not be famous. It might even be overlooked. It’s beauty and importance unnoticed by most, but you see it, you feel it. You have a deep personal connection with that place. We all have these places, but my next question is the most important one. Is that land that you love threatened by habitat loss?

[00:03:27] Human encroachment or construction? Is that land protected? If not, why not? But first let’s paint the picture of Coyote Valley a bit more to make it real for you.

[00:03:38] Michael Hawk: I moved to San Jose in 2011. So San Jose is considered the heart of Silicon Valley, where tech companies employ hundreds of thousands of people. It’s part of the greater San Francisco metro area, which is home to nearly 10 million people.

[00:03:53] After I moved here, I hiked a hill very close to my house and I noticed this vast open space to the south. It was a valley with a mosaic of landscapes. There was agriculture, a river running through the middle of it, there was a massive wetland full of water just over the hill from where I lived. It looked beautiful.

[00:04:11] I wondered why it hadn’t been built in to suburbs and business parks like the rest of Silicon Valley. The iconic US 101 highway bisects the valley. But I was drawn to that wetland. I wanted to go explore it. I could see the mountain range on the other side of the valley. It’s called the Diablo Range, and it was poking its way across the valley floor almost connecting to the Santa Cruz foothills on the other side, and the hills were dotted with massive and ancient oak trees, bay trees, buckeye, trees, and so much more.

[00:04:42] I slowly realized I’d lucked into moving to what was perhaps the last suburb to have been built next to Coyote Valley.

[00:04:49]

[00:04:49] Griff Griffith: That’s Michael Hawk, who you probably know as the founder of Jumpstart Nature and the producer of this podcast.

[00:04:54] He’s been telling me stories about Coyote Valley for years, and that we had to do a podcast episode about it. Well, he convinced me. To show you why you should know the story of this land.

[00:05:06] Nick Perry: So I grew up door to my grandparents. and they came here during the Great Depression when my grandpa did. He was actually a migrant farm worker from New Mexico.

[00:05:15] And so he would take me places to show me what Santa Clara County looked like before it was Silicon Valley, one of the places we would come to.

[00:05:22] As we would keep driving south, out of San Jose and to Coyote Valley, and he’d be like, Nicholas, this is what Santa Clara County used to look like. This was a paradise before it all got developed. And this is, this is your glimpse of what it was before. And it just really fascinated me. I was like, wow, this place still exists. My name is Nick Perry. Coyote Valley Project Director for the Santa Clara Valley Open Space Authority.

[00:05:44] Griff Griffith: Nick has a deeply personal relationship with this paradise.

[00:05:48] Just like Apple before, Cisco Systems, a global tech giant, wanted to relocate their headquarters to Coyote Valley.

[00:05:55] Griff Griffith: Nick, just a high school student at the time, couldn’t stand to see his paradise turn into another sprawling low rise office campus.

[00:06:02] Nick Perry: I created a Save Coyote Valley website, because I thought, well, you know, like there’s someone who needs to advocate for this place. When I created my little website, it got a lot of attention. And as a teenager I was getting emails from people, who were angry at me. I was just rereading some of them because I printed them out and put them in this folder that I’ve had since high school. But some of them were like, how could you stop progress?

[00:06:24] Griff Griffith: Politicians and real estate moguls like to call this “development”. You know, take some useless land and make it useful.

[00:06:32] Develop it. To developers, usefulness often starts with a large construction contract. For politicians, it starts with tax revenue, but there are other ways to value land too.

[00:06:45] Andrea Mackenzie: these kinds of large extensive open spaces

[00:06:48] act in our favor. They act to help us build resilience to these increased climate challenges by buffering lands from massive wildfires, soaking up storm waters as they come through, storing water underground, which we can tap during times of drought. These are the gifts that nature keeps giving us for free. And increasingly we’re putting a price on those and we’re understanding the value of them. But it’s really important to educate the broader public and decision makers so that piecemeal decisions aren’t made that undercut these services that nature is providing us

[00:07:28] Griff Griffith: That’s Andrea Mackenzie again. She’s talking about ecosystem services.

[00:07:33] There are so many things that nature does for us that we often take for granted and overlook. These services don’t show up on corporate balance sheets, but if they go away, they show up as natural disasters. They also show up in the form of increased insurance rates, increased food prices, pollution, floods, and wildfires. But it’s easy for a developer to discount or ignore these free services when advocating for their projects.

[00:07:55] After all, most of those costs I just mentioned, aren’t felt by the developer because they are paid by others often months or years later. In economics, these are called externalities. And unfortunately, are often overlooked.

[00:08:08] But in order to solve this, we must first understand how the land benefits us

[00:08:13] Megan Fluke: the Coyote Valley campaign, which you know, is a multi-generational campaign that started decades ago. The effort really seemed like a campaign to protect this landscape for the sake of the landscape, and that it was beautiful and it was open space and open space ought to be protected.

[00:08:31] The way that it evolved is we started to learn so much more about Coyote Valley, that it was an essential wildlife corridor for large mammals between the Santa Cruz Mountains and the Mount Diablo Range, that it protected San Jose’s water quality and protected San Jose from flooding. Just a whole host of other benefits that I could riddle off.

[00:08:53] The way that the goal evolved is that as we learned more about all of the value that Coyote Valley provides, that development in Coyote Valley just didn’t make sense both from a climate change perspective and also from an economic perspective.

[00:09:08] Griff Griffith: Megan Fluke, who we heard from in the intro, is the former Executive Director of Green Foothills, a non profit that advocates to protect open space and natural resources in the South San Francisco Bay Area.

[00:09:20] Green Foothills was among many other local advocacy organizations that have played a critical role in working to protect Coyote Valley, but ecosystem services aren’t just about the economic benefits of nature.

[00:09:31] It also includes the cultural and spiritual benefits.

[00:09:35] Chairman Lopez: My name is Valentin Lopez, and I’m the chairman of the Amah Mutsun Tribal Band. I’m also president of the board of directors of the Amah Mutsun Land Trust. Amah Mutsun Tribal Band is comprised of the descendants of the indigenous peoples that we’re taking the missions San Juan Bautista and Santa Cruz. Our territories began at the very southern end of Coyote Valley. History identifies our tribe as hunters and gatherers. And, uh, that’s quite insulting, and nothing can be further from the truth. Our people were very active stewards of the land. You know, our creation story takes place just directly west Coyote Valley, and if you look west, you would see the peaks of the Santa Cruz Mountains, and one of the tallest peaks. That’s Mount Umunum, and that’s the location of our creation story. And in our creation story, Creator gives us the responsibility to take care of Mother Earth and all living things. And so for us, all living things are the plants, the trees, The wildlife, the birds, the fish, the four legged, the finned, but then also the rivers, the mountains, and, the view sheds.

[00:10:54] Those were all our responsibilities and our people took it very seriously. We had the responsibility to ensure there was adequate foods for the fish, for the migrating birds, for the deer, the elk, the bear, etc. That was our responsibility to take care of those cultural resources, those food resources for all species.

[00:11:13] Griff Griffith: The depth of connection that indigenous people have with this land is hard for most non indigenous people to fathom. And modern society is often dismissive of traditional ecological knowledge because it doesn’t use the same terminology as Western science.

[00:11:26] And isn’t written up in pricey academic journals.

[00:11:29] Chairman Lopez: when I was in college, I went and looked at the words science and, because I knew that archaeology and chemistry, or biology, you know, I understood what those words meant, but science, what the heck did science mean?

[00:11:42] So I went to the library and looked it up, and science is the study of knowledge. And so when I look at it that way, all of our ancestors were scientists. You know, they’d studied how the plants interconnected, how they studied about the winds.

[00:11:56] They studied about the rains. They studied about the fog, the shadows. we knew that when the insects, nested in the ground, you know, what their nesting periods were so we wouldn’t burn during that time.

[00:12:07] Griff Griffith: You know, science is one of those terms we hear and use all the time, but I decided to look up the definition, just like Chairman Lopez did. Here’s what I found. The systemic study of the structure and behavior of the physical and natural world through observation, experimentation, and the testing of theories against evidence obtained. Over thousands of years, indigenous people had to study, observe, experiment, and test in order to thrive.

[00:12:49] As you might guess, open space adjacent to a prosperous area like Silicon Valley is in high demand.

[00:12:56] And And demand to develop in Coyote Valley has been consistent. Dr. Stuart Weiss is Chief Scientist at Creekside Science. He’s been working on various biology and ecology projects in and near the Valley for many years.

[00:13:10] Stu Weiss: Over the years, there’s just been all these development proposals in Coyote Valley. So back in the eighties, it was Apple and Tandem Computer wanted to put in a huge development in the late nineties cisco wanted to put their world headquarters right down there as part of Coyote Valley Research Park. And then in the mid two thousands people were pushing to have a city, developed on the valley floor. And one of the things I noticed is that every time a Coyote Valley development started getting some momentum, the economy would crash or there’d be a tech crash, and the plans would go away for a few years.

[00:13:51] I just thought that was an interesting leading economic indicator kind of wish I had based my stock investments on that

[00:14:00] Griff Griffith: the demand to develop Coyote Valley was so high that huge projects were pursued. Each one was complex and costly.

[00:14:07] And thankfully, there was a little luck that prevented these projects from proceeding. In fact, the Apple project fell through during the mid eighties, not just because of an uncertain economy, but Apple’s internal politics led to Steve Jobs being forced out.

[00:14:20] Apple ended up selling the land to another developer. And this is one of the first lessons that Coyote Valley can teach us. Perseverance is critical because you never know what is around the corner.

[00:14:31] Griff Griffith: But even as the development projects fell through, other threats remained.

[00:14:35] Dr. Weiss, while in graduate school, had been studying the Bay Checkerspot butterfly. The small butterfly used to be abundant across much of The San Francisco Bay Area. But at this time, only a few small populations remained, and one of those populations was in some hills adjacent to Coyote Valley.

[00:14:52] These grassland hills were grazed by cattle, so some of the researchers decided to fence off a section and see what happened. To their surprise, the fenced off area was taken over by non native Italian ryegrass. The soils in those hills were made of an ancient serpentine rock, which is known to be nutrient poor. And only specifically adapted plants can grow in serpentine soil. Why was the Italian ryegrass here when it struggled to grow so well in other serpentine areas?

[00:15:20] Stu Weiss: I went back to graduate school at Stanford to get my PhD. And I was sitting in a ecosystem ecology class, and the professor Peter Vitousek gave a lecture about something called dry nitrogen deposition. And it was like the light bulb went off in my head and I think it was the magnitude of the Las Vegas strip by the time it was over.

[00:15:46] Stu: And I made all the connections because I’ve been staring up at the smog cloud for about a decade at that point

[00:15:54] And then few back of the envelope calculations and it’s like, yeah, that’s a lot of nitrogen coming down. And that was the moment when I knew that this was an amazing connection here.

[00:16:06] Griff Griffith: It took Dr. Weiss a few years putting the research and science together. He needed to find out why the grazed areas showed more native plants and stronger butterfly populations, and why Italian ryegrass was growing so much better in those areas that were not grazed.

[00:16:20] Stu: And then I published a paper in 1999 that described the phenomenon.

[00:16:25] It’s called Cars, Cows, and Checkerspot Butterflies. And it’s become a bit of a citation classic at this point because I had made a really direct connection between the nitrogen deposition and the loss of biodiversity.

[00:16:38] Griff Griffith: Dr. Weiss was able to show that emissions from cars were fertilizing nearby lands. It was turning those nutrient poor soils into soils that could support invaders like ryegrass. His math showed that as much as 6 kilograms, or 13 pounds, of nitrogen was being applied to an acre of land every year.

[00:16:56] It turned out that the cattle were preferentially eating the invasive grass, due in part to how the grazing was managed. That’s right. Cows were actually helping biodiversity in this unique environment. This is a fascinating story that we looked at in more detail

[00:17:10] in Nature’s Archive Podcast Episode 37. But this discovery and the research that Dr. Weiss did was a key to unlock some of the biggest steps to protect Coyote Valley.

[00:17:21] In 1999, when Dr. Weiss’s paper was published, there was also a proposal to build a power plant in the north end of Coyote Valley.

[00:17:28] Stu: There was a proposal for the Metcalf energy center, 600 megawatt gas fire power plant,

[00:17:34] And it’s a large source of nitrogen oxides.

[00:17:39] The U S Fish and Wildlife service and the California Energy Commission told the proposers of the power plant that they had to do something, we have to mitigate for this.

[00:17:50] Griff Griffith: Many federal, state, and sometimes even local governments require projects that cause environmental harm to offset that harm in some way. In this case

[00:17:59] Stu: they really wanted the power plant and, we’re willing to put out a lot of extra what seemed to me have a lot of extra money, but it’s a half billion dollar project.

[00:18:08] 10, $20 million extra for mitigating was part of the capital costs and they were willing to do it. And we really wanted a precedent for mitigating for nitrogen emissions, because we figured we could start leveraging that. So that went through. In 2003, we have this ceremony dedicated in the Metcalf’s Energy Center Ecological Reserve.

[00:18:33] Stu Weiss: the mitigation for the Metcalf Energy Center turned out to be 131 acres of habitat conserved,

[00:18:41] Stu: So we had the precedent.

[00:18:42] Griff Griffith: This precedent led to 600 additional acres preserved when the US 1 0 1 highway was widened. Eventually, an 1800 acre hillside preserve was also developed This allowed local groups to show the public and the politicians this gem that people were driving by every day, but not noticing -until now. The views from the ridge were both breathtaking and informative.

[00:19:05] Advocates and biologists could tell the story of the land.

[00:19:08] They could show people super blooms of native flowers, the wetland below and how the highways bisected this narrow valley.

[00:19:14] People could easily see just how close the other range was across the valley.

[00:19:20] Andrea Mackenzie: One of the earliest Discoveries about Coyote Valley and why it was and is irreplaceable landscape is we realized that it was the last viable land connection or bridge connecting the Santa Cruz Mountains and the Diablo Range. A million acres of habitat in those two ranges. The success of those habitats depends on the gene flow and wildlife able to move between those two mountain ranges. So by protecting it, it’s the missing puzzle piece that allows us to avoid extinctions and to, improve the biological conditions for many, many species, some of which are found nowhere else in the world.

[00:20:06] And it’s easy for people to understand. It’s compelling. You have charismatic megafauna, as we like to call them, the mountain lions and the bobcats and the foxes and the golden eagles and the bald eagles that are all active in this landscape. And so they become really the salespersons, the ambassadors for protecting this landscape.

[00:20:28]

[00:20:28] Griff Griffith: I like to call those charismatic animal species

[00:20:31] ambassador animals. And if this story of landscape linkages and connectivity sounds familiar, it’s because we did a deep dive in the episode we called The Age of Connectivity.

[00:20:42] Biologists and the general public, like you , are recognizing that the impact of fragmented habitats goes way beyond tragic roadkill.

[00:20:50] Ambassador animals are a critical part of many successful conservation efforts. The charismatic mountain lion of Hollywood, P 22, did so much to sway public opinion, resulting in the construction of the Wallis Annenberg Wildlife Crossing in Los Angeles.

[00:21:04] And these types of stories are showing up more and more all around the world.

[00:21:15] Nick Perry: right now we have about 1, 500 acres of the valley floor permanently protected.

[00:21:19] Griff Griffith: That’s 1500 acres protected in addition to a few thousand acres in the bordering hills. The Santa Clara Valley Open Space Authority sees a bright future ahead, but protection of this landscape is just one important step in Coyote Valley’s journey. They are developing a comprehensive master plan that incorporates land use agriculture, habitat restoration, and access. And to do this well, they are engaging with the public, landowners, the Amah Mutsun, and other local tribes, as well as other users and stakeholders. Many more steps lie ahead. Some of the improvements will happen quickly, but some habitats may take years or even decades to fully recover.

[00:21:58] Andrea Mackenzie: Native American ethos and philosophy is that we should be thinking seven generations ahead. And conservationists know this. They feel it in their, bones that we must be thinking long term

[00:22:12] Griff Griffith: remember earlier when I asked you about the local landscape that you love? Chances are it needs some help just like Coyote Valley.

[00:22:20] And there are so many lessons to be learned from this story. So what lessons can our guests share from this experience in Coyote Valley?

[00:22:27] We already mentioned the importance of perseverance, even when times look tough. Unexpected turns led to development projects falling by the wayside. Megan Fluke elaborates on this.

[00:22:37] Megan Fluke: What was surprising was that at some point we realized that the energy to pave over Coyote Valley and industrialize Coyote Valley really was just coming from a handful of people who had hopes for an industrial and urban city on this landscape.

[00:22:55] It almost felt like the Wizard of the Wizard of Oz for those that know that story. Once we looked behind the curtain, this seemingly, you know, sort of formidable opposition that just we couldn’t really grasp, but we didn’t really know where all this, you know, energy was coming from. This opposition really wasn’t as powerful as we thought.

[00:23:15] the campaign to protect Coyote Valley not once felt hopeless. It felt hard. It felt overwhelming, maybe confusing at times, but not hopeless. we pushed through and we persevered because that’s what advocates do, and we had the community on our side. I

[00:23:33] Griff Griffith: Getting the community on your side is another critical lesson. Ambassador animals can help with that, but you need to be sure people are connected to the land and the vision.

[00:23:41] Megan Fluke: One way that we’ve found to keep people energized is connecting them to the land. One of my favorite quotes is from the naturalist and writer Obi Kaufmann, people protect what they love and love what they know. The way that I found that’s helpful to keep people energized is through education and community connection And. Frankly, having a good fight every so often also energizes people too.

[00:24:08] Stu: We started taking people up to Coyote Ridge to see it, in 2003, I invited all of the elected officials in Santa Clara county to come take a tour and we had it set up so they would show up we’d shuttle them to the top in our four wheel drive vehicles, . And we’d have them for a few hours.

[00:24:28] We’d feed them like this gourmet lunch, then we’d send them on their way back down the hill. And it was transformative. We ended up with some real champions in the elected bodies who realized that, hey, we’re Santa Clara county. We do things right.

[00:24:45] Griff Griffith: Finding champions is also critical, whether it be elected officials, energetic advocates, or existing landowners.

[00:24:52] Nick Perry: Coyote Valley is an amazing place for agriculture. It has great soil, good weather. Agriculture definitely faces economic challenges, but there’s really great potential to help reestablish local agriculture in places like Coyote Valley.

[00:25:08] Griff Griffith: And feel free to toot your own horn once in a while, too.

[00:25:12] Andrea Mackenzie: We acquired a piece of property and opened it to the public in 2015, 350 acres called the Coyote Valley Open Space Preserve. Right before we opened it to the public, we had convenings there and community celebrations to bring many, many people out. People actually drove 45 minutes from San Francisco to come check out this new landscape. And it became a wonderful gathering spot for people to learn about Coyote Valley.

[00:25:46] That would be just a fraction of the conservation achievements we’ve achieved since then. I kind of liken it to this analogy of a, a small bird sticking out its chest and trying to appear bigger than it really is. That’s the kind of behavior that, that we engaged in to show people this was a small but really, really important

[00:26:06] Open Space Preserve, and when we opened it to the public and invited them to come in, they started to get a taste of what this amazing landscape, which had been forgotten for so long, and was surely going to be developed over time, and now belonged to them. What it could be if we thought bigger.

[00:26:25] Griff Griffith: And too often, Indigenous knowledge and partnership is missed.

[00:26:29] Chairman Lopez: I think that what’s really important is for the land managers to recognize the importance and the contributions of traditional indigenous knowledge, you know, our knowledge of the use of fire for cultural burning, not just prescribed fires to reduce fuel, but the importance of fire for, you know, enhancing and developing cultural landscapes. Restoring native plants.

[00:26:55] we’ve talked about these authorities and we’re actually working with them on a number of these initiatives as such. we feel that we have a good relationship with them today. And, and that we are working with them and they do have an appreciation for indigenous knowledge.

[00:27:10] I’d like people to recognize that we suffered through three the brutal periods of colonization. They were very difficult to us. And we people to know that we do not look at them as being the perpetrators to what happened to us. We don’t blame them. But what we ask for them to recognize, how much they benefited from that horrific history. And to recognize that the tribes today, especially the unrecognized tribes, but all tribes today, to work with tribes to help them restore their culture, restore their spirituality, restore their identity, and restore their, their landscapes, and to work with us to heal and recover from the past, And there’s a number of ways they can do that, you know, by supporting tribes in a lot of ways. But like, say for example, our land trust. Our land trust is a non profit. We can only do so much work, according to the amount of, money that we can raise. And so if they can help our land trust through donations that would go a long way to helping Mother Earth and helping our tribe.

[00:28:26] Griff Griffith: And we need to remember an important saying in conservation.

[00:28:30] Megan Fluke: advocates at Green Foothills like Brian Schmidt and Lenny Roberts would tell me ” the wins are temporary, but the losses are permanent”

[00:28:36] Griff Griffith: The wins are temporary because there’s always a new push to develop or purchase land or rezone it.

[00:28:42] Nick Perry: If you look back at the history, Coyote Valley was, I think, first zoned by the city of San Jose for development in 1960 in the And then in 1975, they rezoned it back to agriculture because, you know, people started to advocate that maybe it wasn’t best to continue to sprawl out.

[00:29:00] but then in 1984, they rezoned it back to development when companies like Apple wanted to build here. And that was the case until 2021. So, tides can change.

[00:29:09] Griff Griffith: That’s perhaps the last lesson of Coyote Valley. It’s important to constantly remind people of the value of their land because it’s all too easy for it to be taken for granted. As Megan Fluke said, the wins are temporary, , but the losses are permanent. So think about the special land near you and what you can do to support it. Which groups can you join? Which city council meetings can you attend?

[00:29:31] Perhaps you can organize a hike, birdwalk, or bioblitz to and show others the value of the land. Just get started. And big thanks to our guest today, Andrea Mackenzie, Megan Fluke, Nick Perry, Stuart Weiss, and Chairman Valentin Lopez.

[00:29:45] Chairman Lopez mentioned the Amah Mutsun Land Trust. I love Land Trust because they give us another opportunity to connect, to save, to be a hero, to have a relationship with the land. You can learn more about the Amah Mutsun land trust at www. amahmutsunlandtrust. org. We have links to them and all of our other guests in the show notes at jumpstartnature.com/podcast. And we also post a transcript of this episode and many other resources to help you jumpstart your own personal journey to help the environment. See you next time..

[00:30:17] Michael Hawk: The Jumpstart Nature podcast was created, written, and produced by me, Michael Hawk, and our host and co writer is Griff Griffith. Thanks for listening.

#3 – The Age of Connectivity – How Wildlife Crossings Help Animals and People

Human society is more connected than ever. Between mobile phones and internet applications, we can connect with each other instantaneously, around the globe.

We’ve carved our lands into isolated islands, but we can fix it!

And more traditionally, the United States alone is home to nearly 4 million miles of roads, structures which, for many of us, have only served to enhance our sense of connectedness to the cities we live in, to our families and friends, and to the larger world around us. Yet, these same roads that connect people have the opposite effect to the natural world, extracting an extreme toll on the plants and animals around us, and in many unexpected ways.

And roads and highways are just the tip of the iceberg. Join us as we unravel the many complex dimensions of wildlife connectivity while revealing the surprising toll that human activity has inflicted on the movement of species. Join your guide, Griff Griffith, as he is helped by experts Ben Goldfarb, Beth Pratt, and Robert Rock, who will also teach us how we can help restore essential links while supporting the health of the living beings around us.

Beyond a podcast, Jumpstart Nature is a movement fueled by volunteers, igniting a fresh approach to reconnecting people with the natural world. In the face of our pressing climate and biodiversity challenges, we’re on a mission to help you discover newfound purpose and motivation.

Join us in this vital journey towards nature’s revival. Explore more and show your support at jumpstartnature.com, and follow us on FacebookInstagramLinkedIn, and Twitter.

For even deeper nature insights, delve into our companion podcast, Nature’s Archive.

Links to Topics Discussed

Anthropophony

Crossings: How Road Ecology Is Shaping the Future of Our Planet, by Ben Goldfarb

Lights Out Program from the Audubon Society

Living Habitats, Robert Rock’s landscape design company

Phantom Road Experiment

Save LA Cougars

Related Podcasts You Might Like

Links to Additional Resources

Credits

This podcast episode was written and produced by Michelle Balderston. Our host is Griff Griffith. Michael Hawk provided production oversight.

Transcript (Click to View)

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No warranty of accuracy of the transcript is provided or implied. There may be typos.

[00:00:00] Griff Griffith: Imagine you are a skunk. Not just any skunk. You are a male skunk in late winter. And like all male skunks in late winter, you are feeling strongly motivated by the carnal urge to find a mate. You can’t resist it.

[00:00:14] You leave your familiar territory armed with one of nature’s most effective… and stinky defenses, and you’re hoping to find love, or at least an available female to breed with, but you encounter a new predator while crossing a road. This lightning eyed hunter barrels down on you with a speed that you’ve never witnessed.

[00:00:34] You raise your tail in warning, but it’s undetoured. The brightness of its eyes get larger and larger the closer it gets. It’s uninterrupted growls grow louder and louder. You spray. The next morning, the smell of your failed defense is obvious even before your crumpled up body is spotted on the side of the road. Nothing in your evolutionary heritage prepared you for a freeway. Your genetic lineage is gone.

[00:01:01] And this straightforward problem of roadkill provides just a glimpse into the broader problems stemming from the isolation and fragmentation of natural habitats.

[00:01:12] Ben Goldfarb: Lots of research shows that they’re genetically fragmented and isolated by highways, or at least, you know, certainly many populations are. You know, they can’t cross roads to find new mates and, you know, their gene pools kind of stagnate as a, as a result.

[00:01:27] Beth Pratt: I think we tend to, think that plants don’t need to move, but they do. It’s, it’s the same principle that resiliency, genetic resiliency.

[00:01:36] Griff Griffith: Most people are astonished to learn about all the ways that the highways and their associated noise and lights affect wildlife. The impacts can range from gene flow to auditory barriers and result in the slow or alarmingly fast removal of wildlife species from the landscape. But don’t worry! A lot of innovative progress is being made around the world to reconnect these important pathways, and you can even be a part of these solutionary actions in your very own backyard, porch, park, patio, balcony, workplace, place of worship, and or school.

[00:02:09] I’m Griff Griffith, and welcome to Jumpstart Nature.

[00:02:14] Beth Pratt: Yeah. Wildlife connectivity, I think in a nutshell, I mean, you can get into, you know, really robust scientific definitions, but it’s, it’s ensuring animals and plants can move from landscape to landscape. That you don’t have barriers that impede movement.

[00:02:36] Griff Griffith: That’s Beth Pratt, who is a wildlife advocate, author, and California Director for the National Wildlife Federation.

[00:02:42] You may know her best as leader of Save L. A. Cougars, a campaign to build the largest wildlife crossing in the world, that’s going to cross Highway 101 in Los Angeles. It’s called the Wallis Annenberg Wildlife Crossing, and it will help to reconnect two mountain ranges and their wildlife.

[00:02:58] Ben Goldfarb: The notion of habitat connectivity is just the idea that wildlife can move through all of the different habitats they need to meet their various needs.

[00:03:06] Griff Griffith: And that’s Ben Goldfarb, an independent conservation journalist and author of the new book, Crossings: How Road Ecology is Shaping the Future of Our Planet. These two experts have introduced easy to understand definitions of connectivity, which again, is the ability for species to move freely and uninhibited within or between environments.

[00:03:25] But we need to understand exactly why this is so important.

[00:03:29] Beth Pratt: Connectivity and connected landscapes is something we didn’t realize was so vital for the health of functioning ecosystems. At least when I was first starting out in conservation, we thought islands of habitats worked, we now know they don’t.

[00:03:43] And movement is important for many reasons. Obviously if animals get killed while they’re trying to move to find food or shelter or mates, that’s not good.

[00:03:53] If you have barriers that impede genetic diversity, that’s not good, right? So if animals can’t move to find mates, maybe they don’t die, but the barriers are something that, prevent them from finding food, shelter, or mates.

[00:04:07] Ben Goldfarb: I think that migration, you know, this kind of seasonal movement between points is a really obvious example of the importance of habitat connectivity, but, when you think about the other needs that animals have, of course, you know, they need to find mates, that’s a really fundamental part of wild animal life and, you know, the ability to, you know, move from your, sort of your natal population where you were born and potentially disperse out into an area, you know, with unrelated males or females that you can access.

[00:04:33] Griff Griffith: Habitat connectivity supports genetic diversity, which is critical for maintaining species health in the long term. If a species gene flow becomes stymied, populations begin to dwindle and ecosystems can even break down. Fragmentation also causes increased competition for prey and space and other resources. It also increases the number of encounters between humans and wildlife, which as we know, can go bad really fast.

[00:04:58] The impacts stretch far beyond the immediate and are becoming more severe as habitats become more and more fragmented. Fragmentation is kind of the opposite of connectivity. It refers to the many discontinuous patches among larger habitat. Just imagine one big island breaking into a bunch of little tiny islands. The National Wildlife Federation has named fragmentation as one of the primary threats to survival of wildlife in the United States.

[00:05:23] And what’s driving this fragmentation? In a large sense, it’s all the built environments and structures that humans have introduced in our short time on this planet. From buildings and infrastructure to agricultural fields and forestry activities.

[00:05:36] But there’s arguably no bigger culprit than roads. In the United States alone, there’s an estimated 4 million miles of roads with nearly 50, 000 miles of interstate highways, which are home to about 25 percent of all traffic, and each and every one of those roads presents a challenge, a question, to surrounding wildlife. To cross or not to cross.

[00:06:00] Ben Goldfarb: Not crossing highways in some ways, as some researchers pointed out to me, you know, it’s almost more dangerous than attempting to cross.

[00:06:06] Griff Griffith: We’ve highlighted some of the implications of wildlife not crossing. Now what happens if they do? I think we all know the answer to that. Many, unfortunately, become roadkill. It’s hard to estimate just how many animals are killed by our vehicles every year but the number according to Beth Pratt sits around 1 to 2 million per year, and that is very likely way, way lower than the actual amount of dead wildlife on the sides of our roads.

[00:06:33] Beth Pratt: I think there’s a moral cost to it that we have not reckoned with. If you just look at stats, you have eight to $9 billion worth of damage in the US every year just from these animal vehicle collisions. And that’s just the human costs, right? That’s medical costs, that’s property damage. Your car gets wrecked. That’s loss of work. If that was caused by anything else, it would be a public health outrage. We’d be taking action against it.

[00:07:00] Robert Rock: It’s everything from the cost of cleanup to the insurance impact to the impact infrastructure.

[00:07:07] Griff Griffith: And that is the voice of Robert Rock, Landscape Architect, Principal and Chief Operating Officer of Living Habitats, an Illinois based architecture firm that puts sustainability and ecological well being at the heart of their designs.

[00:07:19] Notably, Robert and his design team are behind the previously mentioned Wallis Annenberg Wildlife Crossing, which we’ll be talking about a lot through this episode.

[00:07:27] Robert Rock: Yeah, when you take all those things in total and you understand it’s that big of an economic impact, it’s kind of shocking.

[00:07:33] Griff Griffith: And that’s just what we CAN see. But our roadsides are home to a diverse array of species and it’s not just the bigger, more visible species that are held back by our roads, even plants face similar consequences.

[00:07:47] Beth Pratt: I think we tend to, think that plants don’t need to move, but they do. it’s the same principle that resiliency, genetic resiliency as I think we all learned is, you know, we can’t be in breeding with our relatives. And that is the same for animals as it is for plants.

[00:08:04] Griff Griffith: And if plant populations start decreasing…

[00:08:06] Beth Pratt: You start pulling any one plant out of an ecosystem, there is an animal that depends on that plant, whether it be a butterfly or a deer or whatever.

[00:08:15] You start having localized extinctions that then actually can affect the whole. So think about if you are a, you know, a plant that’s dispersing seeds, whether it be through wind or other animals, and the only seed dispersal that’s happening, or genetic exchange is right around you because there’s a road in the way.

[00:08:35] So you start creating these islands of genetically like plants. And as we know over time, that does not bode for a, a resilient population, you need genetic diversity.

[00:08:47] Griff Griffith: That’s certainly a problem in and of itself. But there’s one major factor that’s increasing risks and that is climate change. This should come as no surprise given the devastating wildfires that have consumed many parts of North America over this and the past several summers.

[00:09:03] The number of people who have been forced to flee their homes is staggering. We can’t survive such inhospitable and dangerous environments and neither can wildlife.

[00:09:13] Beth Pratt: You know, if you’re an animal who is living on a landscape that is burned, you need options. And if you can’t get to an unburnt landscape because there’s a roadway in the way, you’re gonna starve to death. And indeed, we saw that happen with the mountain lion population in the Santa Monica Mountains.

[00:09:30] Ben Goldfarb: Drought, fire, these other climatic, conditions are increasing the imperative that animals be able to move between patches of habitat and roads are exactly the problem that are preventing them from doing that.

[00:09:41] Griff Griffith: Because of changing climatic conditions, namely warmer temperatures and environmental disasters like droughts, wildfires and extreme weather, species need escape routes.

[00:09:51] But with so many roads in the way, that has become increasingly difficult, if not downright impossible. And to prevent this from happening, first and foremost, meaningful action on climate change is absolutely necessary around the world. But of course, this is a huge issue that will take time. So let’s get inspired by taking a look at what will soon be the largest wildlife crossing in the world. And it will be spanning one of the busiest freeways in California. Currently under construction, the Wallis Annenberg Wildlife Crossing will span 10 lanes of Highway 101 in California, and by Beth Pratt’s estimates, endures 300 to 400 thousand cars each and every day. The crossing is expected to be complete in 2025.

[00:10:33] Beth Pratt: The Wallis Annenberg Wildlife Crossing, I think is, um, my colleague called it a Bridge of hope, and I, I think that’s the best thing I can call it. It is a visionary project that is reconnecting the Santa Monica mountains to the rest of the world. It was cut off decades ago when we put the 101 in and really isolated the entire mountain range.

[00:10:55] So this bridge is not just going to get animals from point A to point B, you know, it’s not just gonna be about mountain lions crossing over. On top is going to be a living landscape that pretty much reconnects the Santa Monica mountains to the rest of the world. So, along with mountain lions crossing on it, you’re going to have monarch butterflies laying their eggs on top of it. You might have a fox family living on it. You’ll have western fence lizards.

[00:11:18] It’s a living landscape on top of one of the world’s busiest freeways. And I just can’t think of anything more hopeful than that.

[00:11:25] Griff Griffith: Robert Rock as one of the architects on the crossing can speak more about what truly makes this bridge more than just a bridge.

[00:11:33] Robert Rock: You have to think about this type of infrastructure, not as a bridge, it’s better to think about it as an elevated piece of habitat. Sure, there are structural components that are classic to bridge architecture, but all of those incredible engineering feats as a part of this project are done in service of the environment.

[00:11:59] Ultimately when we’re designing things like this, You are creating this microcosm of the natural world.

[00:12:05] Griff Griffith: Once complete, this crossing will claim the title of the largest in the world, restoring habitats within a densely populated area that has been heavily degraded by human activities and development over many decades.

[00:12:18] Its proponents hope to see the crossing allow for the free movement of a broad variety of species without the risk of car collisions, while also enhancing the health and well being of many previously isolated populations. Outside of California, similar crossings or corridors have been popular in parts of Canada, the Netherlands, Australia, and more, highlighting a trend which is only continuing to grow globally. And more and more regional or federal agencies are making it mandatory to consider wildlife safety.

[00:12:48] Great. So we build more wildlife crossings like the Wallis Annenberg wildlife crossing. That’s problem solved, right? Well, unfortunately, it’s a bit more complex than that.

[00:12:59] Beth Pratt: Light pollution is an incredibly big barrier and can cause death, disorientation, and, and many other impacts to wildlife.

[00:13:10] Griff Griffith: Most migratory birds, including ducks, geese, and songbirds will migrate under the cover of darkness, given that the nighttime skies are often cooler and calmer with less risk of predation. Unfortunately, with the light from our cities, distracting them from their paths, once they get lost, they can be left circling the same area of the sky over and over becoming very tired.

[00:13:31] Worst case scenario, this exhaustion can put them more at risk of predation, lead them to collide with physical structures, or even cause death.

[00:13:39] Ben Goldfarb: Of course, so many nocturnal species that rely on darkness to hunt and to avoid predators and to feed.

[00:13:44] Robert Rock: It throws off circadian rhythm, their foraging and their, their hunting activity, their sleep cycle, their mating habits.

[00:13:50] Griff Griffith: There’s a whole other piece about how artificial light can push migratory animals to migrate earlier than they biologically should or otherwise would. Yet, it’s not just birds who are in trouble.

[00:14:01] Beth Pratt: Dr. Travis Longcore did a light map and pretty much showed that the late P-22’s route to Griffith Park was probably dictated almost entirely by avoiding light pollution.

[00:14:12] Griff Griffith: P-22 is the famous mountain lion of Los Angeles who miraculously crossed multiple freeways to get to Griffith Park in search of a territory of his own. Unfortunately, he only found isolation in the urban Griffith Park and died famous, but unmated.

[00:14:26] So species can be inhibited by visual barriers just as much as they can be by physical ones. An artificial light, which has become such a fundamental component of modern human societies, is causing so much harm to the natural world by eradicating natural patterns of lightness and darkness.

[00:14:44] Whether it’s from light bulbs, headlights, or the glow of our phone screens, this perpetual light has undoubtedly revolutionized the way that we as humans live. But if it can cause such harm to other species, perhaps there’s some harm it can cause to us too.

[00:14:58] Luckily, when it comes to solutions for enhancing connectivity,

[00:15:01] Ben Goldfarb: I think that’s something, that’s something that wildlife crossing designers and engineers are increasingly conscious of, the fact that, you can have this wonderful wildlife crossing, but , you know, if that crossing is brightly lit and noisy, animals are less inclined to use it.

[00:15:17] Griff Griffith: Taking the Wallace Annenberg Wildlife Crossing as an example, Robert Rock and his team were acutely aware of the negative impacts of light pollution on migratory and nocturnal species. While considering the benefits to human safety that highway lights often provide, they needed to devise a design which held human and wildlife wellbeing in equal regard.

[00:15:36] Robert Rock: When you have surfaces that are lighter in color, they have an increased amount of reflectivity. The concrete barriers that are in the median or along the edge of the freeway are painted white on purpose, you know, to reflect that light, to make them a a bit more visible.

[00:15:52] But ultimately, when artificial light hits those surfaces and it bounces off of them, it creates this illumination that creates what’s called sky glow.

[00:16:02] What you get is kind of this halo effect from any of these portions of, of developed area and, and infrastructure where you’re affecting those species and their ability to exist within a certain offset distance from the, freeway itself.

[00:16:16] Griff Griffith: This sky glow was ultimately addressed through more intentional design choices meant to resolve a seemingly inherent conflict between human safety needs and wildlife safety.

[00:16:26] Robert Rock: We worked pretty deliberately and diligently with the electrical engineers at Caltrans to change essentially what’s been, you know, the last couple decades of, push in a different direction to be more efficient with light sources.

[00:16:40] The stationary ones that are along the freeway. Where the light fixtures would get higher, they would get brighter, and they would be spaced further apart. Well, the challenge with that is that obviously that light, when it’s pushed in those extremes is impacting further and further from the freeway itself.

[00:16:54] So we asked them if we could bring those lights back down to more proximate height. We could put them a little bit closer together. Uh, and then we also worked with them to change the, the color temperature of the lights.

[00:17:04] Ben Goldfarb: The designers, you know, have really gone to great pains to mask some of those light pollution impacts, through vegetated screens and berms and walls and other, other measures.

[00:17:15] Griff Griffith: Those two considerations alone, through the use of more efficient, less invasive light sources to the construction of these large earthen berms -doubling as both visual barriers to light pollution and ecosystem enhancer -will go a long way to restoring wildlife connectivity along the 101 in Southern California.

[00:17:32] And more progress is taking place elsewhere too. International guidelines have been developed under the Convention on the Conservation of Migratory Species and Wild Animals or the CMS to address artificial light as a major source of pollution and detriment to nature.

[00:17:48] These guidelines will be presented for adoption at an international conference later this year. Additionally, a number of cities have begun participating in quote unquote lights out events, a campaign developed by the Audubon Society, which encourages reducing unnecessary artificial lights during critical migration periods.

[00:18:07] Now, what’s the deal with noise?

[00:18:10] Beth Pratt: Noise pollution, another one, in the ocean and elsewhere, animals tend to try to avoid human noises, and especially on our roadways, some of them won’t even get to a road to try to cross because the noise is so impactful they turn around before they even get there.

[00:18:28] Ben Goldfarb: There are lots of, studies showing that, uh, you know, animals avoid noisy areas, or, they have to modulate their calls. If you’re an amphibian or a songbird to kind of be heard over the din. Road noise is really a form of habitat loss.

[00:18:43] Griff Griffith: Okay, so we know that large structures like roads prevent wildlife connectivity, and we know that artificial light pollution poses another challenge.

[00:18:52] In the same way, species can often become disoriented by the human made noises around them, especially near a busy freeway, which then either deters them or confuses them to the point that they’re not able to reach their intended destinations.

[00:19:07] Take this for example. You found yourself in a crowd full of people and you’re trying to find your friend. You hear them calling your name faintly in the distance, but you can’t exactly make out where their voice is coming from. Humans rely on auditory cues to move through our environments just as much as other species do. And noise pollution is posing a huge problem. According to the World Health Organization, noise pollution is one of the most detrimental forms of pollution. There’s a specific name for this kind of human-made noise, called anthropophony, or anthrophony for short. This term was coined by musician and soundscape ecologist Bernie Krause along with his colleague Stuart Gage and refers to the sounds that are generated directly by humans or our technologies.

[00:19:52] While there’s a bit more nuance and details we can get into, this term is important as it sets itself apart from geophony, the sounds of natural non biological things such as wind or water, and biophony, or the sounds of living organisms.

[00:20:05] Why is it important to distinguish human made sounds from other living or non living sounds? Well, estimates suggest that the rustling of leaves might be as quiet as 20 to 30 decibels, while a small stream might be 40 decibels.

[00:20:19] In contrast, the sound of a lawnmower can be as loud as 90 decibels. The wail of a siren? Up to 140 decibels, both of which far exceed the threshold at which sound can damage a human’s ears. And things become even more serious if those sounds persist over long periods of time.

[00:20:41] Ben Goldfarb: I didn’t quite realize the extent to which all of that noise was impacting me until you read the literature about the human health effects of road noise and, you know, and realize that, I mean, that constant racket, that stress, is raising our blood pressures and, you know, making us more susceptible to stroke and cardiac disease and, all kinds of problems. I mean, road noise is literally shortening our lifespans. You know, it’s, it’s one of the great, I think, unsung public health crises of our time. You know, and it has kind of a similar, uh, effect on wildlife as well.

[00:21:14] Griff Griffith: If humans were removed entirely from these landscapes, just think of how quiet things would be. The consequences of anthropophony are striking.

[00:21:24] Ben Goldfarb: if you’re an animal, a wild animal, you know, your, hearing is indispensable, right? if you’re an owl or a fox, you know, that’s how you detect your prey. And, if you’re a prey species, that’s how you detect your predator, right, is primarily through hearing. you can’t hear, you know, you’re going to avoid that area.

[00:21:41] Griff Griffith: Researchers have studied this very effect in what is called the Phantom Road Experiment…

[00:21:47] Ben Goldfarb: …which was conducted in Idaho by researchers at Boise State University. And, basically what they did was they recorded the sound of traffic, and then they played the noise of the road, this otherwise unroaded, forest, during songbird migration season.

[00:22:02] And, you they found very clearly was that, birds tended to avoid that noisy area, and the birds that did stick around, were in worse body condition because, they were sort of constantly having to look around for predators rather than hear them, and they, fed less as a, as a result.

[00:22:19] So they were kind of skinnier and less equipped to, uh, complete their migration. So that was just, you know, kind of a, a brilliant study that, proved, I think very conclusively that, isolating noise as a variable, road noise is, is still a, a huge issue.

[00:22:32] Griff Griffith: Studies such as this one have highlighted the negative implications of noise pollution on species health and richness, where decreasing species abundance has resulted from traffic noise as low as around 45 to 55 decibels.

[00:22:46] Other species such as frogs and toads have been known to adjust their vocal behaviors in the presence of anthropophony by adjusting the frequency or amplitude of their calls or ceasing their calls altogether.

[00:22:59] This may leave the females without the ability to find their mate. Or it could trigger a stress response in them which leaves them immobile.

[00:23:07] Now, the best part about noise pollution is that unlike other forms of pollution, it doesn’t linger once it’s been removed from the environment. You turn off the sound, you start to restore connectivity.

[00:23:17] Remember those large earthen berms I mentioned earlier that have been integrated into the Wallis Annenberg Wildlife Crossing? That’s another brilliant example of how landscape architects like Robert Rock consider the different barriers to wildlife connectivity and integrate these considerations into corridors and other connectivity projects, as these walls do a great deal to diffuse noise as well.

[00:23:41] Robert Rock: You put up a sound wall because we hear high and medium frequency sounds, and we want to attenuate those sounds to make our, our lives better on the backside of those walls, so we don’t hear that sound coming off the freeway.

[00:23:52] But the challenge that exists when you’re designing a crossing like this, where we really, truly are restitching the entire ecosystem, is that those areas that are adjacent to the crossing structure themselves will host species that are part of that environment, that have a home range that’s so small that we are creating a home for them.

[00:24:11] We’re creating a home for some of these species that are more impacted by the low frequency sounds than they are by the higher the medium.

[00:24:18] So what we’ve designed are these series of earthen berms that stretch along the freeway in all four directions, off the corners of the structure that are a combination of different layers of material that flank the edge of the roadway and extend back into the habitat area so that we can vegetate the backside of that and create habitat on the backside.

[00:24:39] And create enough mass between the roadway and the habitat that we’re creating to attenuate sound on the order of 20 to 25 decibels.

[00:24:48] Griff Griffith: In cities in Europe, acoustic walls and rubberized roads have been piloted to diffract the sound of traffic. As recognition to this invisible type of obstacle to connectivity becomes more common and these types of solutions become popularized around the world, we’re sure to do a great deal of good for our own health and the health of the species around us.

[00:25:09] I hope it’s clear by now that wildlife connectivity, whether physical, auditory, or visual, is absolutely crucial to preserve The well being of biodiversity and we humans with every additional road or structure we build have made that increasingly difficult. And it’s not just roads and highways that we need to think about. Anywhere we’ve built structures that impede animal movement, anywhere that our artificial lights cut through the dark of night, and anywhere our noises boom through habitats offers us the opportunity to see how we’re impeding wildlife connectivity and try to improve it.

[00:25:42] Beth Pratt: You’re not gonna have wildlife in the future if you keep building more parking lots and start accommodating like electric bikes off trail.

[00:25:50] But yeah, I think, you know, our biggest barrier is us.

[00:25:53] Griff Griffith: But not all hope is lost. There are some incredibly inspiring initiatives taking place across the United States and the world that are successfully working to rebuild these essential links.

[00:26:02] Take the Wallace Annenberg Wildlife Crossing in California as a striking example of human ingenuity and compassion for our fellow living beings.

[00:26:11] Understandably, not all of us can just go out and build wildlife crossings, but there are still little steps that we, as individuals, can take to make a positive difference. For example,

[00:26:21] Beth Pratt: I mean, obviously donating to projects, but volunteering, getting the word out about why this is important.

[00:26:27] But I think the biggest impact you can have is actually just in your own space, whether you have a backyard or an apartment balcony or whatever, put on your wildlife eyes and look at how you may be contributing to the problem. Are you leaving your lights on at night? Do you have lights that are impacting wildlife? If everybody shut off their lights, wow, that would just be an amazing impact.

[00:26:52] Ben Goldfarb: citizen science is really powerful. Or community science or participatory science, you know, whatever, whatever term you wanna use for. that’s kind of one of the, one of the beautiful things about, participatory road ecology is that, it doesn’t really require any, you know, special expertise to identify, you know, a dead raccoon or a skunk, by the side of the road.

[00:27:10] And there are many programs and apps, that collect that data and use that data. And, you know, there are some wonderful case studies community collected data,, informing the location of wildlife crossings or, you know, or, or contributing to, our understanding of the range of species. Roadkill, you know, for all of its tragedy is also this really useful scientific tool.

[00:27:31] Griff Griffith: There’s lots of reasons to have hope.

[00:27:36] Beth Pratt: I do think overall the views of wildlife are changing across the country. Um, some areas it’ll take a lot longer, but you know, science is now showing what or as animal lovers, you know, I grew up with animals my whole life, knew, which is they are capable of emotion, they do have personalities, they have an intrinsic worth.

[00:27:57] we take for granted every day being able to get in our car and driving to the grocery store without being killed, without having to navigate an obstacle course.

[00:28:06] I think if we started thinking about what it would mean if we had to face all these obstacles, we’d have wildlife crossings everywhere.

[00:28:14] And I think the good news is it’s not that we have to give up doing any of these things. We don’t have to give up mountain biking or boating or driving. We just have to do those things with wildlife in mind.

[00:28:25] Griff Griffith: Many of the impediments to connectivity we discussed today happened consistently over generations, and surprisingly, despite being obvious in hindsight, it was not so obvious while it was happening. With the actions we discussed in today’s episode, we can help biodiversity recover.

[00:28:44] But there are many other examples of dramatic generational changes that we miss or misinterpret.

[00:28:49] For example our elders have told us of a time when salmon were so plentiful that you could walk across the river on their backs or a time when you had to pull over your car and wipe all the bugs off your windshield just so you could see the road but current generations may be unaware of this history Due to a phenomenon known as Shifting Baseline Syndrome.

[00:29:10] In episode four, we’ll hear an indigenous perspective, a marine biologist perspective, and an environmental scientist perspective to help us understand how to go from a place of wildlife deficit to creating a story of hope, a story of lots of wildlife coexisting with us as we move forward.

[00:29:28] How do you or will you support connectivity in your own community or even your own backyard? We’d love to hear from you. You can email us at podcast at jumpstart nature. com or leave a comment on one of our social media pages. You can find us on Twitter, Facebook, Instagram, and you can also follow our personal Tik Toks. Mine’s @GriffWild.

[00:29:47] And a huge gratitude shout out to Ben Goldfarb, Beth Pratt, and Robert Rock for their contributions to today’s episode. Ben and Beth have also been featured in our sister podcast, Nature’s Archive. If you’re interested in hearing full length interviews about the fascinating world of connectivity and more, check them out.

[00:30:05] Ben Goldfarb also has a wonderful new book out called crossings, which I highly recommend checking out. if you want to learn more about widespread ecological transformations that roads have driven, including many of the topics we’ve touched today, be sure to get his book. I am loving it.

[00:30:23] And be sure to check out jumpstartnature.com/podcast, where we’ll include links to all the resources mentioned during today’s episode, a transcript of the podcast and additional resources to help you learn more about how to support connectivity.

[00:30:37] Michael Hawk: The Jumpstart Nature Podcast was created by myself, Michael Hawk. Today’s episode was written and produced by Michelle Balderston. And our host is Griff Griffith. Thank you for listening.