Tag Archives: warrenville

Under the Prairie Ice

“To keep every cog and wheel is the first precaution of intelligent tinkering.”–Aldo Leopold

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Polar Vortex! In the Illinois prairie region, all the chatter is about the week’s forecast: wind chill temperatures of 50-plus degrees below zero. Brrr! It’s a good time to dream a little bit about the summer to come.

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One of my favorite tasks as a prairie steward is monitoring dragonflies.  People often ask me in the winter, Where are the dragonflies now? How do they survive the brutal cold? 

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Some, I tell them, like the green darners and black saddlebags, have migrated south to reproduce. Later generations journey back north again, much like the well-publicized monarch butterfly. But most of our dragonflies are still here—in the nymph stage—under the surfaces of streams, ponds, and pools of prairie wetlands, waiting for spring and warmer temperatures. Under the prairie ice.

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Dragonflies and their population changes tell us a lot about our water quality. Dragonfly responses to climate also help us understand what we see happening in the see-sawing temperatures and weather changes in the world around us. Good reasons to care! With this in mind, citizen scientists monitor dragonflies of all species, tracking their numbers each year.

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We need our dragonflies. I’ve spent a lot of time kayaking and looking for dragonflies and damselflies on Silver Lake at Blackwell Forest Preserve in Warrenville, Illinois, just for fun.  But now, in this January cold, the lake is full of ice fisherman.

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Just across the preserve, not far from the ice fishing houses, is my destination—the Urban Stream Research Center. Here, one of our most vulnerable insect species, the Hine’s emerald dragonfly, is being reared.

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Some people dream of meeting sports heroes. Others, their favorite rock star. Me, I dream of seeing the Hine’s emerald dragonfly (Somatochlora hineana) winging its way through a prairie preserve. It’s our only federally-endangered dragonfly. Finicky? Yes! It has a lot of special requirements, including shallow flowing water and time spent in burrows made by the devil crayfish. 

During the winter months, I pore over my favorite dragonfly field guide by Kurt Mead part of the North Woods Naturalist Series

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… and open it to the Hine’s emerald dragonfly spread. Then, I think what it would be like to see the real thing.

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Today, I’ll get part of my wish.

Heading up the project in its third year in the Chicago Region is DuPage County Forest Ecologist Andrés Ortega. His enthusiasm for dragonflies and passion for the project are evident from the first moment of my arrival at the center.

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Andrés reaches into a refrigerator, and pulls out a dozen vials of tiny Hine’s emerald dragonfly nymphs.

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The dragonfly nymphs are in “diapause,” just as nymphs are outdoors. These nymphs enjoy cool refrigerator temps of about 40 degrees Fahrenheit;  their normal overwintering temperature, Ortega tells me.

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The eggs were gathered from gravid female dragonflies at known breeding sites in DuPage and Cook Counties, Andrés tells me.  Once netted, the tip of the female dragonfly’s abdomen is dipped into water—a process that simulates ovipositing—causing her to release her eggs. After the eggs are harvested, they are taken to a research laboratory in South Dakota. Here, they hatch and are cared for through their first months or even years of nymph life.

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Then, they are driven to Illinois and hand-delivered to Ortega at the Urban Stream Research Center.

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These are ferocious little critters. Andrés tells me they keep similar-sized nymphs with other similar-sized nymphs, as larger ones will enjoy the smaller ones for dinner if thrown together. Cannibalism! It’s a bug-eat-bug world out there. Staff carefully control the water quality (which should not be too clean) and water temperature.

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In the spring, the nymphs will be released into the research center’s indoor raceways. These are long pools that mimic stream-like conditions. The temperature of the water in the raceways is carefully calibrated to reflect the rising temperatures outdoors.

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Raceways are custom made by employees expressly for the dragonfly rearing. Sand, rocks, frayed rope pieces, and plastic aquarium plants offer hiding places for the nymphs. In about mid-May, the nymphs will begin feeding from a menu that includes small crustaceans and midge larvae. The screens and netting will keep midges from escaping and interfering with other research work at the center, such as mussel propagation.

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It will take the dragonfly nymphs about four to five years to reach maturity, from the egg stage to the beautiful creatures of the air I see in my field guide. When ready to emerge, they will be released into suitable nature preserves in the state.

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Ortega tells me that less than one percent of the Hine’s emerald dragonfly nymphs survive in the wild. Pretty slim odds, aren’t they?  I’m grateful to people like Andrés Ortega. He is one of our unsung heroes, doing the hard work of keeping part of the natural world from vanishing forever.

The next time you see a frozen prairie stream or pond this winter, think of the many different species of dragonflies waiting to emerge, just underneath the surface. Who knows? This might be the year we see more of the Hine’s emerald dragonflies, cruising through prairie wetlands. I’m planning to show up and look.

How about you?

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The Aldo Leopold quote that opens this essay is from Round River. Leopold is often referred to as the father of wildlife ecology and the United States’ wilderness system. Please visit The Aldo Leopold Foundation’s website to learn more about Leopold and his work, which is carried on today.

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Grateful thanks to Andrés Ortega for his tour of the Urban Stream Research Center; his patient answers to all my questions;  his reading and suggested edits for this blogpost (all remaining errors are my own); and his terrific work with dragonflies. Contact him at aortega@dupageforest.org.

Many thanks to super nice guy Kurt Mead, author of Dragonflies of the North Woods, Third Edition (2017), and Sparky Stensaas, co-owner of Kollath+Stensaas Publishing, who approved using the cover and pages with the Hine’s emerald dragonfly for this post (and also thanks to photographer Troy Hibbitts whose Hine’s emerald images (thehibbets.net) appear on those pages. If you are interested in dragonflies, you should own this beautiful guide–it is indispensable for Midwestern dragonfly chasers, even if you live a little further south of the North Woods (I live in Illinois).  Order from your favorite local bookseller, or online here.

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All photos copyright Cindy Crosby (top to bottom): Mt. Hoy, Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL; cold day at Springbrook Prairie, Naperville, IL; hundreds of Canada geese (Branta canadensis) on open water of Springbrook Creek at Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL;  male calico pennant (Celithemis elisa), Schulenberg Prairie, The Morton Arboretum, Lisle, IL:  ice fishing shacks on Silver Lake, Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL; Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve of DuPage County, Warrenville, IL; Cover of Dragonflies of the North Woods, Third Edition, by Kurt Mead (2017), courtesy Kollath+Stensaas Publishing and Kurt Mead; interior spread, Dragonflies of the North Woods, Third Edition, by Kurt Mead (2017), courtesy Kollath+Stensaas Publishing and Kurt Mead. Andrés Ortega (Homo sapiens), ecologist, Forest Preserve District of DuPage County, Warrenville, IL; vials of Hine’s emerald dragonfly (Somatochlora hineana) nymphs, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Hine’s emerald dragonfly (Somatochlora hineana) nymph, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Hine’s emerald dragonfly (Somatochlora hineana) nymph,Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Hine’s emerald dragonfly (Somatochlora hineana) nymph, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; water system, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; raceway system, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; life support system, Urban Stream Research Center, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL; Fox River, Geneva, IL.

Reflection, Rather than Reaction

“Alert to the slow rhythms of nature, we can appraise more soberly the hectic rhythms of the headlines.” — Scott Russell Sanders

On this first day of November, we find ourselves in a mess. Perhaps it comes from paying  too much attention to angry voices in the media pre-election, polarized around money, sex, and power. It’s easy to be reactive to the headlines, and then let our anger spill out onto people, through our words and actions. To respond with venom to the those who disagree with us, instead of love.

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The rhythm of the seasons helps dispel this tendency toward reacting without really listening. Walk, quiet your mind, turn off your phone. Let the wind blow away your frustration. Breathe. Issues will come and go. Politicians will explode into the spotlight for a brief time, then fade away. Yes, issues are important. But so are other things in the world.

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Look around. See the colors of the prairie at the beginning of November! Scarlet and gold leaves are everywhere to delight us, although they are fading fast. It’s so easy to forget the miracles all around us and focus on the tense voices loudly clamoring for our attention.

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There are more subtle washes of color in the grasses now, with few wildflowers to punctuate it with bright color.  The tallgrass community is entering a season of rest.

Quiet.

“All people are like grass, and all their glory is like the flowers of the field; the grass withers and the flowers fall…”

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Sit for a while on the rocky outcrops of St. Peter’s sandstone, overlooking the prairie. Do  you feel the ageless stability of rock in the face of change?

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It’s easy to lose sight of what is real, and what is hype; what is true and what is fabrication; what is worth believing, and what is deception. There are no easy answers, nor have there ever been. But there is reflection.

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Then, action. However, action without reflection often feeds hate, distrust, and ultimately, regret. Any time we feel certain that we are right, we need to stop. Think. Make time for reflection. Listen. And stay open.

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It’s easy to get caught up in what everyone “like us” is thinking or doing, to follow the dictations of a group we identify with…even to the point we feel mud-slinging is somehow justified.

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We are not somehow more “in the know” than others, in daily life or in politics. We are imperfect humans in community with our families, our towns, our states, our nation, our world.  We work toward the common good with others we don’t always agree with –indeed, others we plain just can’t stand!–but can learn from, no matter how much they are different from us. There is room at the table for everyone.

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We strike poses on social media to show we are the right thinkers; we aren’t like the “other side.” What has happened to civil discourse? To a willingness to agree to disagree? Polarization brings with it the fear of others, or a need to distance ourselves in public from other points of view, rather than acknowledgment of what we have in common and what we share. When we stop listening and reflecting, we close ourselves off to any hope of understanding.

A walk in the tallgrass is a way to give ourself space. Alone, we reflect on our place in the greater community. We listen, yes–and then, begin to sort out what we believe. What is wisdom? What do we want to discard? It’s a time to think about the legacy we want to leave for future generations. A legacy of fear and suspicion of each other? Or a legacy of love? How will I act?

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“Do not wait for leaders,” said Mother Teresa. “Do it alone, person to person.”

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What time will you make this week to reflect on the world and your place in your community–wherever you find yourself?  What small things will you do that make a difference, even to one person? How will you treat those you disagree with who are part of your community, no matter how much you dislike their personal choices? Will you speak with love? Or will  your voice be strident and secure in the knowledge that “I know what is best?” What can we learn from each other in our differences? How are we alike?

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Let the slow rhythms of nature quiet your mind, open your heart, and allow you to pay compassionate, non-judgemental attention to what is happening in the world.

Reflect. Then act –and choose your words with love.

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The opening quote is from Scott Russell Sanders (1945-) in Writing from the Center. Sanders is the winner of the John Burroughs Natural History Essay Award. He lives in Bloomington, IN, and writes compellingly about the importance of community.

The quote from Mother Teresa of Calcutta (1910-1997), an Albanian-Indian Catholic nun, is paraphrased, and sometimes said to be a mis-attribution. It’s powerful, no matter what the source. The quote “All people are like grass” is taken from  1 Peter 1:24.

All photographs copyright Cindy Crosby (top to bottom): Full moon over author’s backyard prairie spot, Glen Ellyn, IL; common milkweed (Asclepias syriaca) in seed, Franklin Creek Grist Mill prairie, Franklin Grove, IL; sumac (Rhus spp.) , Schulenberg Prairie, The Morton Arboretum, Lisle, IL; Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; Fame Flower Knob, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; Willoway Brook, Schulenberg Prairie, The Morton Arboretum, Lisle, IL; figwort (Scrophularia marilandica), Schulenberg Prairie, The Morton Arboretum, Lisle, IL; clouded sulphurs (Colias philodice) and orange sulphurs (Colias eurytheme) puddling in the mud, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; Tuesdays in the Tallgrass prairie work group, The Morton Arboretum, Lisle, IL;  seeds drying in the barn, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; hand in hand at Silver Lake, Blackwell Forest Preserve, Forest Preserve District of DuPage County, Warrenville, IL;  finding perspective in the tallgrass, Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL.

Flight Through the Tallgrass

“For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.” –Leonardo da Vinci

The summer sky tumbles her clouds. The prairie whispers, “flight.”

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So many ways to reach new heights on the prairie in August. So many ways to take to the skies.

Butterflies drift through the air like colorful leaves. The tiger swallowtails take frequent snack breaks.

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Silver skippers pause, dwarfed by the grasses now shooting skyward, considering their options.

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Some prairie inhabitants fly only as far as a hop and a jump.

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While others will travel distances limited only by the imagination.

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Yet, as satisfying as it is to take to the air, it’s wise to find shade where you can. The blazing prairie sun offers no relief.

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The zips and zags of dragonflies dazzle. When one dragonfly comes to rest on a budded blazing star, you can’t help but admire her intricate wings, those complex eyes.

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So much is unfolding on the prairie in August.

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You sense everything is moving in a new direction.

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Time is flying. Will you be there, in the tallgrass?

 

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You’ll be amazed at what you see…

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…if you make time to look.

 

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The opening quote is by Leonardo DaVinci (1452-1519), perhaps the most diversely gifted person in history. Among his many interests was flight; he created plans for flying machines and studied the flight of birds.

All photos copyright Cindy Crosby: (top to bottom) big bluestem (Andropogon gerardii) against the August sky, Belmont Prairie Nature Preserve, Downer’s Grove, IL; eastern tiger swallowtail butterfly (Papilio glaucus), St. James Forest Preserve, Warrenville, IL; silver-spotted skipper (Epargyreus clarus), Belmont Prairie Nature Preserve, Downer’s Grove, IL;  green frog  (Lithobates clamitans), St. James Farm prairie area, Warrenville, IL;  American goldfinch(Spinus tristis), St. James Farm, Forest Preserve of DuPage County, Warrenville, IL;  great horned owl (Bubo virginianus), Belmont Prairie Nature Preserve, Downer’s Grove, IL;  female blue dasher dragonfly (Pachydiplax longipennis)) on rough blazing star (Liatris aspera)  Belmont Prairie Nature Conserve, Downer’s Grove, IL;  Indian grass unfolding, (Sorghastrum nutans), Belmont Prairie Nature Preserve, Downer’s Grove, IL;  old weather vane, St. James Farm, Forest Preserve of DuPage County, Warrenville, IL;  vehicle at Nachusa Grasslands, The Nature Conservancy, Franklin Grove, IL; female eastern pondhawk (Erythemis simplicicollis ), Schulenberg Prairie, The Morton Arboretum, Lisle, IL.