Tag Archives: Endangered Species

Insurgent Chinese Privet Attempts Invasive Species Comeback

In October 2011, I had a chance to work with biologist Chis Warren and a group of Austin volunteers to help clear out Chinese Privet (Ligustrum sinense) from the Balcones Canyonland Preserve (BCP). I talked about our exploits last year in Titanic Struggle with Chinese Privet Ends with Their Doom.

In August 2012, I returned to the Long Canyon portion of the BCP with volunteers from the Austin Invasive Species Corps to hunt down Chinese Privet plants that were attempting a comeback, such as from the stumps that we cut down earlier or from berries that were buried underground.

It’s important to remove Chinese Privet and other invasive species from the BCP to help protect the native habitat of the endangered Golden-Cheeked Warbler.

Commander Ben and biologist Chris Warren taking a break from battling Chinese Privet.

Mr. Warren talked with me about the progress that they made since last year, and in the video from our August 2012 adventures, he describes the Chinese Privet’s distinguishing features.

For example, did you know that in Central Texas, most invasive plants have leaves and branches that are strongly opposite from each other, and many native plants have alternating leaves and branches?

Cut stump of Chinese Privet, an invasive species on the Balcones Canyonland Preserve.

In the video, you’ll also learn why invasive species have a built in advantage over natives, such as cheap, quick growth and the lack of natural predators.

Learn more about my past adventures on the Balcones Canyonlands Preserve:

The Austin Invasive Species Corps Wants You

Would you like the enjoyment…ah…satisfaction of protecting your native ecosystem and pulling an invasive plant out of the ground with a weed wrench or other nature defense weapon of your choice?

You can!

On Saturday, September 29th, join Austin Wildlands and the Austin Parks Foundation to help clear invasive species from the BCP and around Austin as part of National Public Lands Day. You can also help to restore Black-capped Vireo habitat in the BCP, help prairie seeding restoration on Water Quality Protection Lands in Northern Hays County, and many other great volunteer activities!

Update: Because of heavy rain expected on September 29, the clean up for National Public Lands Day was postponed to October 6.

Hope to see you there!

Your friend,
Ben

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Filed under Austin Invasive Species Corps, Austin Parks Foundation, Balcones Canyonlands Preserve, Barton Creek Greenbelt, BCP, BCP wildland conservation, Black-capped Vireo, Chinese Privet, City of Austin, City of Austin Wildland Conservation Division, City of Austin’s Wildland Conservation Division, Endangered Species, Golden Cheeked Warbler, Invasive Plants, Invasive Species, Ligustrum, Long Canyon, Mr. Chris Warren, National Public Lands Day 2012, Water Quality Protection Land, Weed wrench

Austin Invasive Species Corps Aid Golden-Cheeked Warbler

Mr. Darrell Hutchinson describes his work helping to track and protect the habitat for the Golden-Cheeked Warbler, an endangered species that breeds only in central Texas. He demonstrates how the weed wrench helps to remove invasive species that crowd out the native plants and trees in the warbler’s ecosystem.

Mr. Hutchinson is a biologist in Austin, Texas, and a member of Austin’s Invasive Species Corps. I interviewed “Corporal” Hutchinson during our invasive species volunteer day in August 2012. Learn more about my adventures with Austin’s Invasive Species Corps.

This video is part of my “Invasive Species: Secrets Revealed” series of interviews with scientists that I first started at the 2011 Texas Invasive Plant and Pest Conference.

Your friend,
Ben

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Filed under Austin Invasive Species Corps, Citizen Scientist, Endangered Species, Golden Cheeked Warbler, Invasive Species, Invasive Species: Secrets Revealed, Mr. Darrell Hutchinson, Volunteer, Weed wrench

Adventures with Austin’s Invasive Species Corps

Last weekend, I joined the Austin Invasive Species Corps to identify locations of Chinese Privet (Ligustrum sinense), an invasive species invading in the Long Canyon portion of the Balcones Canyonland Preserve (BCP).

I was happy to talk again with Mr. Chris Warren, a biologist with the BCP, and see the area that we helped to clear last year in my video, Titanic Struggle with Chinese Privet Ends with their Doom. (I’ll post another great video interview with him soon!)

Commander Ben and Biologist Chris Warren examine a small Chinese Privet.

It was nice to see a lot of native plants starting to grow back in the open spaces that the Chinese Privet plants used to occupy. We had pulled up a lot, but more were starting to creep back in and there were other areas too where the Ligustrum overran the native plants. (Sometimes the biologists in our group would call Chinese Privet by its scientific name, Ligustrum.)

Pulling up Chinese Privet with a weed wrench.

We used special weed wrenches to hand pull as much Chinese Privet as we could find. These heavy tools help to pull up the plant, roots and all, otherwise it could grow back from a stump.

It was a fun day filled with hunting invasives, hard work, and listening also to some wonderful presentations from many different people who are experts in the field of invasive species.

Know your invasive species: Chinese Privet

Small Chinese Privet plant (But they get much bigger!)

Chinese Privet is a woody bush with green leaves that break off easily and has lots of shoots growing out from the stalk.  It can sometimes be confused with the following native plants:

  • Elbow bush (Forestiera pubescens)
    How to tell them apart: Elbow Bush has branches that grow at 90 degree angles
  • Yaupon (Ilex vomitoria)
    How to tell them apart: The Yaupon has a tooth edge leaf instead of smooth edge leaf like the Chinese privet.

Unfortunately, Chinese Privet invaded the lower area of Long Canyon where it crowded out the native plants to create a monoculture.  Seeds from “Godzilla” sized Chinese Privet that were planted in the landscapes of homes up on a ridge, washed downhill, grew, and quickly multiplied.  This process happens over and over again when it rains and when birds carry the seed berries too.

In Asia, Chinese Privet’s native home, it stays in check because it has to contend with disease, parasites, and wildlife “eaters”.  Here in the U.S., Chinese Privet is essentially free of predators, and this allows it to spread aggressively.  Even our deer don’t like to eat it!  They prefer our native Texas plants instead.

As a non-native and pioneer species, this invasive plant can grow and spread quickly.

So why is it a problem if Chinese Privet establishes a monoculture in our area?

Know your Endangered Species: Golden cheeked warbler

Golden-Cheeked Warbler
Photo Credit: U.S. Fish and Wildlife Service

Well, it all has to do with water and the cute…and endangered…Golden-Cheeked Warbler.

The Golden-Cheeked Warbler, is a native bird and it uses the bark of the Ashe Juniper (Cedar) tree to make its nests.  These birds eat the larva of moths and butterflies that live on the Texas Live Oak trees.  Unfortunately, the Chinese Privet hogs the water and crowds out the the Cedars and the Oaks, and this eliminates the habitat and food for the Warbler.

This is especially troubling because the Golden-Cheeked Warbler is the only bird species with a breeding range confined to Texas from Palo Pinto County southwestward along the eastern and southern edge of the Edwards Plateau to Kinney County. The Balcones Canyonland Preserve is part of the Warblers’ habitat.

By clearing the Chinese Privet, we hope to create more habitat and food for the Golden-Cheeked Warbler.

Another opportunity to clear invasive species next month

Mark your calendars on Saturday, September 29, when the Austin Invasive Species Corps will get together again for a land management workday to fight against invasive plants in a new area of Long Canyon. This time, they’ll grapple with a team of two villains:

This is your chance to be an Invasive Hunter in action to battle against invasive species and help save the Golden-Cheeked Warbler!

Many thanks to Ms. Louise Liller, volunteer coordinator for the Austin Water Utility’s Wildland Conservation Division; Mr. Chris Warren; Austin biologists Mr. Darrell Hutchinson and Mr. Matt McCaw; and the valiant voluteers of the Austin Invasive Species Corp for hosting this event and making a difference for our endangered songbird and our native ecosystem.

Your friend,
Ben

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Filed under Ashe juniper, Austin Invasive Species Corps, Austin Water Utility's Wildland Conservation Division, Balcones Canyonlands Preserve, BCP, BCP wildland conservation, Chinese Privet, Edwards Plateau, Elbow bush, Endangered Species, Golden Cheeked Warbler, Ligustrum, Long Canyon, Mr. Chris Warren, Mr. Darrell Hutchinson, Mr. Matt McCaw, Ms. Louise Liller, Pioneer plant, Texas Live Oak, Wax Leaf Privet, Waxyleaf privet, Yaupon