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Restoring Habitat For Monarch Butterflies In Southern Oregon


Monarch butterflies have seen steep population declines since the 1990s. some estimates put the losses at more than 75 percent of the population over the past 30 years. 

Monarch butterflies have seen steep population declines since the 1990s. some estimates put the losses at more than 75 percent of the population over the past 30 years. 

Brude Fingerhood/Flickr

 

You recognize monarch butterflies — with their large, distinctively patterned orange, black and white wings, monarchs are iconic across North America for their far-ranging multi-generational migration. But the population of these colorful creatures has plummeted by 75 percent or more since the 1990s.

Now, government agencies and local nonprofits are teaming up to restore feeding and breeding habitat for the monarchs as they make their way through southern Oregon each year.

A Victim Of Development

On a recent sunny spring morning, Sheila Carder walks the bike path along Bear Creek Greenway, pointing out small gardens that she calls “waystations.”

“And these are these little islands of pollinator habitat …,” she says.

Carder is with the Lomakatsi Restoration Project, an Ashland-based nonprofit that focuses on forest health and habitat restoration projects in southern Oregon and northern California. Lomakatsi has worked with community members and students at a local elementary school to plant these waystations to provide tiny oases for bees, birds and other pollinating species.

“There’s milkweed,” she says. “And then there’s a number of other plants that have blossoms that are helpful for the pollinators. But milkweed is the one that’s really key for the monarchs.”

Monarch butterflies rely on milkweed. It’s where they lay their eggs, and it provides essential nutrition for monarch larvae.

Carder says pollinator habitat – and milkweed in particular – has been widely displaced by human development.

“A lot of times milkweed was growing in places where people wanted to build houses or where there were places that were good for farming or things like that and they were oftentimes seen as weeds,” she says.

Carder says planting these waystations is one way to help the monarchs on their long migration along the West Coast. But now, Carder’s group has teamed with federal agencies and other nonprofits to take monarch habitat restoration to a new level.

Making Way For Restoration

The slope on the Sampson Creek Preserve where the monarch butterfly habitat project will be placed. Mount Ashland is visible in the background. 

The slope on the Sampson Creek Preserve where the monarch butterfly habitat project will be placed. Mount Ashland is visible in the background. 

Liam Moriarty/Jefferson Public Radio

 

Maia Black drives along a deeply-rutted dirt road in an All-Terrain Vehicle, slowing down occasionally to point out new plantings of milkweed and other pollinator-friendly plants.

“Wherever you’re seeing these orange stakes along the drive is where we’ve kind of selected little planting sites based on exposure to sun or proximity to the creek,” Says Black, who heads the Selberg Institute, which manages this 4,800-acre former cattle ranch along Sampson Creek south of Ashland.

After climbing a while, we emerge in a saddle between grassy hills, with the Siskiyou Mountains stretching off to the south and west. Here, Black points out over the 30-acre site where a large-scale monarch habitat restoration project will soon be underway.

“As you can see, the vegetation on this hillside is largely a non-native composition of star thistle, medusa head and annual grasses,” she says.

Sean Prive, an ecologist with Lomakatsi, says the plan is to try to restore the natural diversity that would have existed on this site before decades of cattle grazing changed the plant community. The first step is a controlled burn.

“So if we burn here in, say, May, right before all this seed falls onto the ground,” he says, “we’ll burn off this thick layer of thatch that’s developed on the site which physically blocks the germination of native seed and we’ll reduce the amount of seed that’s added from the invasive species on the site.”

Then, native seed and seedlings will be planted. With any luck, after a few years, Prive says, native wildflowers will produce nectar to feed a variety of pollinators, especially monarchs.

“The milkweeds in particular produce food for the monarch larvae, which hatch nearby and then consume the milkweed before they turn into butterflies and continue on their migration,” he says.

This site is one of six that are being restored for monarchs across southern Oregon, totaling 300 acres from the Coast Range in Curry County to the Siskiyous along the California border.

Robert Coffan — with Southern Oregon Monarch Advocates — says these landscape-scale habitat projects represent an ambitious leap from the tiny pollinator waystations. And, he says, they’re part of a new way of thinking.

From left to right, Robert Coffan, Maia Black, and Sean Prive examine some wildflowers on the Sampson Creek PErserve. 

From left to right, Robert Coffan, Maia Black, and Sean Prive examine some wildflowers on the Sampson Creek PErserve. 

Liam Moriarty/Jefferson Public Radio

 

“Monarch restoration isn’t special,” he says. “It doesn’t have to be a stand-alone thing. All we need to do is start to weave in pollinator habitat restoration into all the restoration work we’re doing anyway.”

If these initial projects are proven to create usable monarch habitat over the next few years, Coffan says, projects of this type could well become more common as ways to throw a lifeline to the region’s iconic pollinators.

 

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