Ants, trees, soil, and more: REU presentations conclude summer of science

To some people, gathering in an auditorium on a bright summer day for a packed schedule of science presentations might not seem exciting. I will confess that once I was among those poor, unenlightened individuals. Now, I know better.

PHOTO: The REU group gathered in front of the brontosaurus skeleton on the grounds of the Field Museum.
REU interns from the Chicago Botanic Garden and the Field Museum gathered at the museum on August 16.                  All photographs are by Stephanie Ware, Field Museum research assistant.

The reason I know better is because recently, I attended the Fifth Annual Undergraduate Research Symposium at the Field Museum in Chicago. There, college students participating in the Research Experience for Undergraduates (REU) program at the Chicago Botanic Garden and at the Field revealed some intriguing research findings about plants and animals.

For example, who knew that hormones likely determine the rigid caste system of those scary army ants? (“Scary” was not a scientific term used in the presentation, but trust me, they are.) Or that some species of tropical trees in the Yucatan Peninsula access water by sending their root systems through the tops of underground caves, enabling them to survive drought? And that native plant restoration helps fight air pollution? (How, you wonder? It improves carbon sequestration, a process in which carbon dioxide is transferred from the atmosphere to the soil—do not even think “dirt”thereby removing the air pollutant.)

Funded through National Science Foundation grants, the REU program is held each summer, and hundreds of hopeful candidates from colleges and universities throughout the United States apply to the programs at the Chicago Botanic Garden and the Field Museum. Selected participants number only in the teens, and this fortunate group explores a diverse array of scientific topics related to plant and animal biology and conservation. They receive a stipend of $4,500 for the ten-week program, plus an additional subsistence and travel allowance.

PHOTO: Garden REU intern Christopher Wright
Garden REU intern Christopher Wright

Though the stipend is much appreciated, the main benefit of the REU program is professional: these young scientists perform detailed research out in the field and within sophisticated laboratories, under the skilled mentorship of senior scientists and doctoral and master’s students. Along the way, they gain meaningful professional experience that will help them as they pursue further education and careers. At the Garden, for example, participants have access to the laboratories of the Daniel F. and Ada L. Rice Plant Conservation Science Center, equipped for research in ecology, soil science, genetics, reproductive biology, GIS, microscopy, population biology, geochemistry, isotopic analysis, and other areas of investigation. Some of the Garden’s REU participants use these labs while they serve as research mentors for teens attending Chicago Public Schools and participating in the Garden’s College First program.

PHOTO: Ben Girgenti
REU intern Ben Girgenti describes his project at the poster presentation.

“The REU internship program is a human infrastructure development initiative funded by the National Science Foundation. What better way to introduce students to doing scientific research than immersing them in it over the summer?” said senior scientist Patrick S. Herendeen, Ph.D., co-director of the Garden’s Division of Plant Science and Conservation and director of academic partnerships. “We select applicants with an interest in the science that we do here at the Garden. Many of them have not had an opportunity to participate in research, so the internship is a great opportunity for them, and for us too! When the interns return to their colleges and universities for their senior year, we keep in touch and provide guidance as they consider the next steps in their career path.”

On August 16, after a rigorous summer of scientific exploration, the REU graduates gathered at the Field Museum to lay it all out.

Kenneth Angielczyk, Ph.D., curator at the Field Museum, introduced the combined group of 17 presenters. “This symposium is the capstone experience of the REU program,” he said, noting that for many students, it was the first time they presented a talk in a scientific context.  Dr. Angielczyk warmly welcomed the Chicago Botanic Garden REU participants, who traditionally have made their presentations separately, at the Garden’s Glencoe campus. “I hope this is the beginning of an ongoing collaboration going forward,” he said.

PHOTO: Rosalba Herrera
REU intern Rosalba Herrera explains her research at the poster presentation.

One by one, the speakers stepped to the stage and described their work. The breadth of their research, and the significance of what these undergraduates concluded, was startling. (See the agenda, which lists their topics.) Through the focus of research varied widely, the subtext of climate change provided a sobering backdrop to many of the presentations.

After a couple of hours my focus began to waver, but only because my caffeine levels had dropped. Fortunately, Stephanie Ware, Field Museum research assistant and REU symposium coordinator, had arranged for coffee and pastries between sessions.

PHOTO: presenters and audience mill around posters and chat.
REU interns, families, and mentors take a coffee break and review poster presentations.

Soon I found myself perusing the poster presentations in the lobby, coffee in one hand and muffin in the other. (There may have been some healthy snack offerings, too, but if so I trotted by them too quickly to notice.) Nearby, REU participants, their families, and the scientists who mentored them mingled, and I overheard phrases like “mediated plasticity,” “fungal partners,” “phylogenic attributes,” and “bryozoan morphogenesis.” Then it was back into the auditorium for another round of presentations.

At the event’s conclusion, conservation scientist Jeremie Fant, Ph.D., the Chicago Botanic Garden’s molecular ecologist and laboratory manager, and coordinator of the REU program at the Garden, thanked the participants. He encouraged the students to consider presenting their summer work at other meetings. “Mentors and audience members alike are impressed with the caliber of your presentations today, which are worthy for presentation at any national science meeting,” he said.

Meet the Chicago Botanic Garden’s 2013 REU interns.

The REU program begins accepting applications in January 2014 for next summer’s program. If you are an undergraduate student passionate about plant science and conservation, consider applying to the Chicago Botanic Garden’s REU program. The Field Museum’s program also offers unique collections-based research opportunities. Both enable students to get involved in what Dr. Angielczyk described as “the real scientific process” through meaningful mentorships. 


©2013 Chicago Botanic Garden and my.chicagobotanic.org

Battling Buckthorn

PHOTO: Ecologist Joan O'Shaughnessey
Garden ecologist Joan O’Shaughnessey wields her weapons of choice.

Our weapons: saws and loppers.

Before our might, the foliaged foe fell along a stretch of the Green Bay Trail near the Braeside Metra station.

That’s where a group of 50 of us gathered to vanquish thickets of invasive buckthorn (Rhamnus sp.) on Wednesday, June 19. The removal was initiated by the City of Highland Park and the Park District of Highland Park in partnership with the Chicago Botanic Garden. Ravinia Festival also provided volunteers and space for parking and picnicking afterward.

“This was an ideal place to demonstrate what buckthorn control could accomplish through taking back our beautiful natural surroundings, even in very busy settings,” said Rebecca Grill, natural areas manager for the Park District. The area links two major cultural institutions serving the community, the Garden and Ravinia. It is also near a planned bike path for cyclists and pedestrians that eventually will extend to the Garden, connecting the North Branch and Green Bay Trails. 

PHOTO: the Park District team.
The Park District team included (left to right) Rachel Cutler, Dianna Juarez, Dan Malartsik, Liz Ettelson, Rebecca Grill, Ted Baker, Steve Meyer, and Chris Wilsman.

 

PHOTO: Sophia Siskel and helpers.
Sophia Siskel, the Garden’s president and CEO, brought her sons to help.

From 9 to 11 a.m. we sawed, chopped, cut, tugged, pulled, dragged, and stacked so much buckthorn that by the time a break was called, some piles were as high as me (5 feet), extending in an impressive line down the trail. Joggers, walkers, and cyclists made their way past the activity, occasionally cheering on the workers, including Garden President and CEO Sophia Siskel and her sons.

Why has buckthorn become such a problem in the Midwest? It’s the story of a plant species imported for perceived benefits that runs amok, crowding out less aggressive native plants and altering the landscape. Buckthorn arrived in the United States in the mid-1800s, brought from Europe as an ornamental plant admired for its thick, long-lasting foliage and fast growth. Native birds relished the fruits of the tall shrub and helped to disperse them. Once scattered, the seeds could remain dormant for as long as six years. In contrast to native plants, buckthorn supports almost no native invertebrates, like butterflies and moths, many of which are either food for native animals or serve as important pollinators. Soon buckthorn expanded far beyond its original boundaries of home landscapes and farms—where it was used as a windscreen—crowding out native plants, changing nutrients in the soil, and threatening native habitats. 

IMAG0242
Participants work to clear buckthorn near the Braeside Metra station and Ravinia Festival.
Buckthorn on Green Bay Trail
The cut buckthorn was dragged out of the way of cyclists and pedestrians using the Green Bay Trail.

How much buckthorn did we eliminate? Rebecca estimated that our group cleared 1,500 feet of trail—more than a quarter-mile. At 2:30 p.m.,  she and her crew were still feeding the cut plants into a wood chipper, making sure the chances of reseeding are minimal. They also selectively applied herbicide to the remaining stumps. In the future, they plan to monitor the area for the return of native wildflowers, seeding if necessary.

I live near the trail and run along it often. Already I have enjoyed seeing how the sunlight filters into this new clearing, reaching areas that will soon flourish with returning “natives.”

Rebecca Grill, PDHP, and Bob Kirschner, director of Aquatic Plant and Urban Lake Studies
Rebecca Grill of the Park District and Bob Kirschner of the Garden pause before tackling the buckthorn.

Learn more about invasive species on the Garden’s website. For information about future buckthorn workdays, contact Liz Ettelson at the Park District of Highland Park  (eettelson@pdhp.org). 


©2013 Chicago Botanic Garden and my.chicagobotanic.org

I made that?!


One of the advantages to working as an editor here is being among the first to read about new classes offered by the Joseph Regenstein, Jr. School of the Chicago Botanic Garden. Last summer, after proofing a description of a prairie plant wall tile class led by artist Janet Austin, I immediately registered for it, as did my web-design colleague Christina. I was a bit dubious, having last taken an art class in sixth grade, but this workshop sounded too intriguing to pass up.

When that Sunday rolled around, Christina and I joined a group of other adults eager to make art using plants. After we had gathered in our Garden classroom, Janet introduced herself and explained that we would be choosing among the prairie flowers and grasses collected in several vases and pressing them into clay. After that, we were to use tiny dried pasta letters to spell out the plants’ names—or anything else we wanted to “write.“ The pasta would be incinerated in the kiln, leaving only the imprinted letters. Clever!

We both chose bold purple coneflower. I thought it had a shape that would translate readily onto clay, unlike (I thought) the spindly looking Queen Anne’s lace next to it. I resumed my seat and looked down at my slab of clay, fighting a kidlike impulse to begin squishing it around madly. My mature adult nature asserting itself, I carefully pressed my coneflower into the slab, then lifted it up and took a look. Hmm. Not much there. I pressed harder. This time, I could see the contours of the leaf, the stem, and an array of pinprick dots left by the stiff cone.

Next came the letters. I shook the box of alphabet pasta over my desk, then began searching for the correct letters to spell out “purple coneflower” while Christina used the plant’s Latin name, Echinacea purpurea. Then we students wandered around, admiring what the others were doing. Best of all was picking  up our tiles a few weeks later, after Janet had applied verdigris glaze and fired the pieces. Amazing! Beautiful! Artistic! I made that?!

PHOTO: Prairie plant wall tile from Janet Austin's workshop at the Garden.

I gave my tile away as a holiday gift, but Christina still has hers, pictured here. As it turned out, one of the most beautiful tiles of all featured Queen Anne’s lace. Who knew its delicate beauty would translate to clay so well? The grasses were gorgeous, too.

Janet is offering another wonderful prairie plant tile class on Thursday, March 14 — the Garden Marker Tile Workshop — creating the same style of tile, but in a set of hanging row markers for your garden’s bounty. Don’t miss out on the fun!


©2013 Chicago Botanic Garden and my.chicagobotanic.org