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Purdue Stories: This amphibious rock star gets its own educational video game with the help of Purdue research.

The eastern hellbender salamander will never win a wildlife beauty pageant. It’s believed that it got its name from settlers who said it looked like a creature from hell that was “hell-bent” on going back there. But it turns out that the hellbender could probably win the pageant’s talent contest because of all the good it does for the ecosystem.

Purdue research has revealed that the hellbender is one salamander that just might capture your heart.

Once endangered in Indiana and at risk in other parts of America, the hellbender does so much good that it inspired its own custom-built Minecraft experience. Yes, Minecraft — the one with its own movie starring Jack Black and Jason Momoa, and millions of players from every single country worldwide.

Helped by Boilermaker researchers first organized by Rod Williams, a former Purdue professor now on the faculty at Texas Tech University, “Help the Hellbender — A Minecraft Conservation Quest” was created for the Minecraft Education realm.

This new game lets players traverse the hellbender’s underwater world, overcoming challenges and learning about why we all need to protect this superstar amphibian, whose health helps reveal the health of rivers and streams.

With millions of young Minecraft lovers around the world, the game is an ideal vehicle to reach middle schoolers and high schoolers — its target audiences.

It’s hoped that those students will discover not only a fascination with this lovable amphibian, but also a sense of environmental stewardship.

Roni Bullock, a senior Purdue Extension educator and forestry and natural resources graduate student, who has written lesson plans for teachers to use in combination with the game, says she sees the Minecraft game-based learning experience as a digital adventure that connects young minds to the living systems that sustain them.

“The hellbender might not look glamorous,” she says with a laugh, “but once you get to know it, you realize how much it tells us about the health of our rivers and streams. It’s a perfect species to show why protecting water matters.”

A living water-quality monitor

Looking like very slimy, super-overgrown tadpoles — their unique nicknames include “snot otter” and “water dog” — hellbenders can grow up to 2 feet long and weigh nearly 5 pounds.

You might notice that the hellbender’s wrinkly skin looks a bit like wet lasagna noodles. That’s because it lives underwater and breathes through its skin. This also is a main reason it’s so vital to humans. Because it absorbs oxygen through its skin, it’s a living water-quality monitor — a sentinel — for the health and purity of waterways.

When hellbenders get sick or fail to reproduce, water conservationists know they need to figure out what’s wrong with their watery habitat and then work to fix it.

Jason Hoverman, professor of vertebrate ecology in the Department of Forestry and Natural Resources in Purdue’s College of Agriculture, says hellbenders are coming back in Indiana after their numbers were estimated at less than 1,000 before 2010. He says their comeback story is all about teamwork.

“We’ve released over 1,000 hellbenders into Indiana streams in the last decade and, just two summers ago, we found the first evidence that they’re reproducing again,” he says. “That was huge. It meant the population was not just surviving — it was recovering.”

The hellbender makes a comeback

The recovery is no accident. “It’s been a massive partnership,” Hoverman says. “We work with the Indiana Department of Natural Resources, several zoos and nonprofits. Everyone’s doing their part to make sure this species has a future.”

The collaboration even stretches beyond Indiana, linking scientists and conservationists across more than a dozen states in the hellbender’s range from New York to Georgia.

Hoverman and his team study the eastern hellbender, found mostly in the cold, rocky streams of southern Indiana near the Kentucky border. “They used to be found farther north,” he says, “but as water quality declined and habitats changed, their range shrank.”

Today, much of the work focuses on protecting and restoring those last strongholds — particularly the Blue River, where Purdue scientists monitor conditions closely. “It’s encouraging; overall, the water quality there has really improved,” Hoverman says.

But the battle isn’t over. Farming practices that strip soil from fields can send clouds of mud into streams, filling in the under-rock crevices where hellbenders stay hidden from predators and protect their eggs.

“If you have bare farm fields and heavy rain, that soil can just slide into the river,” Hoverman says. “It’s like a mudslide filling in all the spaces they need to live.” He says the solution can be surprisingly simple: planting cover crops and buffer strips of trees at the edges of farm fields to retain soil and nutrients. “Those practices help farmers, too — they conserve soil and nutrients, so everyone wins.”

Hoverman sees the hellbender as an essential messenger: “When hellbenders are thriving, it means our water is clean enough for us to thrive, too. If we take care of them, we’re really taking care of ourselves.”

Learning species conservation through play

When Minecraft’s virtual gaming platform enables players to dive into the world of the hellbender, Bullock wants to make sure those players resurface with a purpose.

“When they play, students get to experience three different roles,” Bullock says. “They’ll choose to be a wildlife biologist working in the field, a lab researcher helping raise hellbenders in captivity or a conservationist collaborating with local landowners. And at the end, they can actually become the hellbender itself, experiencing how human activities affect its world.”

By taking on those roles, players will experience the problems as well as the possibilities. “I want students to see that people really do have an impact on the environment around them,” Bullock says. “But I also want them to feel empowered — to realize that they can make a difference. Whether it’s through farming practices that prevent runoff or by pursuing careers in conservation biology, these are all ways to help protect wildlife and clean water.”

Bullock’s lesson plan will become part of Purdue Extension’s signature curriculum for teachers nationwide — and even internationally.

“It’s free for teachers everywhere, and anyone can download it,” Bullock says. “The lesson I’ve written is designed to pair with the game so that teachers can engage students and draw out the key concepts afterward.”

Her lesson plan will soon be available on Purdue Extension’s Nature of Teaching website as well as the Help the Hellbender homepage. “We want it to be easy; just click, play and learn,” Bullock says.

For the Purdue scientists behind the project, the goal extends far beyond the screen. Every student who plays and every teacher who shares the lesson helps build a generation that values clean water, resilient ecosystems, and the intriguing and mysterious creatures that depend on them.

As Bullock puts it, “If the hellbender can inspire even a few students to care about conservation, then that’s a win for everyone — including the rivers we all share.”

Resources:
Help the Hellbender website
Help the Hellbender Facebook page
Ask the Expert: Learn All About Hellbenders and Take a Tour, Subscribe to Purdue Extension – Forestry & Natural Resources (FNR) YouTube Channel
Ask the Expert video: Help the Hellbender – Dr. Stephen Spear of The Wilds, Purdue Extension – FNR YouTube Channel
Ask the Expert video: Live with Mesker Park Zoo and Botanical Gardens – Hellbenders, Purdue Extension – FNR YouTube Channel
Nature of Teaching – Hellbenders Rock Sneak Peek video, Purdue Extension – FNR YouTube Channel
Nature of Teaching – Hellbenders Rock webinar video, Purdue Extension – FNR YouTube Channel
Learn about hellbenders and take a tour of Purdue’s hellbender rearing facility video, Purdue Extension – FNR YouTube Channel
A Moment in the Wild – Hellbender Hides video, Purdue Extension – FNR YouTube Channel
A Moment in the Wild – Hellbender Release video , Purdue Extension – FNR YouTube Channel
Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension’s resource center
Hellbenders Rock! Nature of Teaching Lesson Plan, The Education Store

Amy Raley, Senior Content Writer,
Purdue Brand Studio

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Purdue Landscape Report: Is it too early (and too hot outside) to think about Christmas trees? Maybe, but many of the pests that attack them are active at this time of year. In this week’s IDNR Entomology review, Jared Spokowsky shared damage he observed on pine from white pine weevil and Zimmerman pine moth, which got me thinking about Christmas tree season.

One of my favorite winter traditions is selecting a Christmas tree to bring home and decorate. Whether you are a Christmas tree grower or simply have conifers in your landscape, there are several pests to keep an eye out for as summer comes to an end. Here is a brief review of a few pests that threaten our Christmas (tree) spirit.

Zimmerman pine moth (ZPM)

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Purdue Landscape Report: When considering trees, shrubs, and forbs or grasses to plant for landscaping, a little research in advance can lead to dual benefits for both the appearance of your planting area and a wildlife-friendly landscape. Our native wildlife species are tuned into using our native plant species, so selecting plants that are naturally found in your area is a first positive step for plantings that benefit native animals. This can happen at a lot of levels. Oaks are a good example of this multi-level benefit. We might naturally think of the acorns that oak trees produce as the major wildlife food benefit, and it is extremely important for a host of mammal and bird species including jays, turkey, squirrels and deer. It is less obvious, but no less important, that oaks support hundreds of insects that feed on their leaves and acorns, and those insects support many species of birds and other animals that feed on them. Indiana has over 17 species of oak trees native to the state, so there is an oak tree suited to almost any site or situation.

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It is natural to think of spring as the season of flowers in our woodlands, but summer can also provide some outstanding displays of native bloom. In addition, these flowers are often attracting some of our largest and showiest butterflies and bumblebees. Here are a few of the late summer flowers you may encounter in local woodlands. (Click on photos to enlarge.)

Wood Nettle is a look-but-don’t-touch type of plant. While I find the foamy white flowers attractive, the stinging hairs along the stems and under the leaves feel like instant poison ivy. This is one of the reasons Foresters don’t wear short pants in the woods! It is a good indicator of moist and fertile soils.

 

 

 

Wingstem is a large plant with thin ridges along the stems providing the name. These head-high and taller plants of edges, thin woodlands and fertile soils put on a great display. It seems to be a common plant in black walnut plantations as both the good soils and light shade favor its growth.

 

 

 

Tall Bellflower catches the eye as blues seem to stick out in the green and yellow dominated foliage. I see this attractive star-shaped flower on tall stalks at the edge of woodlands and in areas where more sunlight enters the forest understory.

 

 

 

 

Pale or Yellow Jewelweed is in the same genus as the impatiens found in the garden stores. The tube flowers turn into spring-loaded seed pods that pop with the least amount of pressure applied by a finger and thumb. It is hard not to be startled even if you have experienced this mini-explosion before. Spotted Jewelweed is very similar, but has orange flowers with dark dots.

 

 

White Snakeroot can be quite common in forest understories. The white flowers may be the dominant bloom in some woodlands, partly because of the toxic nature of the plant. It is toxic to both livestock and humans and is the source of the milk sickness that killed Abraham Lincolns mother. Cows grazing in woodlands would eat the white snakeroot, which tainted the milk consumed by the pioneer families.

 

 

Jack-in-the-Pulpit flowers in the spring, but the cluster of red berries which ripen in the late summer and fall are large and bright, so they draw attention. While toxic to humans some birds and other wildlife will consume the seeds. The less common, but related Green Dragon plant has similar berry clusters.

Great Blue Lobelia has a name that matches its visual impact. The tall spikes of brilliant blue flowers are excellent for pollinators and put on a great show. This is a plant of woodland edges and moist soils, but can get to be 4 feet tall, with large numbers of flowers, so it is hard to miss when present.

 

 

Resources:
Celebrate Pollinator Week with Flowers of June Tour, Got Nature? Blog, Purdue Extension – FNR
Pollinator Conservation Education, Purdue Extension – Entomology
What’s buzzing in your backyard? Learn about protecting pollinators, beekeeping with Purdue Extension, Purdue Extension News
Indiana Monarch and Pollinator Conservation website
Protecting Pollinators: Protecting Pollinators in Home Lawns and Landscapes, publication, The Education Store, Purdue Extension’s resource center
Consider Pollinators When Planning Your Garden, Got Nature? Blog, Purdue Extension – FNR
Attract Hummingbirds to Your Yard video, Purdue Extension – FNR YouTube Channel
Tracking the Bloom, Got Nature? Blog, Purdue Extension – FNR
Indiana’s Native Orchids, Indiana Forestry & Woodlands Association (IFWOA) Webinar
Landscape Uses of Native Plants, Indiana Native Plant Society
Find an Arborist video, Trees are Good-International Society of Arboriculture (ISA)
Tree Installation: Process and Practices, The Education Store, Purdue Extension resource center
Tree Planting Part 1: Choosing a Tree video, Purdue Extension
Wildflowers and Ferns of Indiana Forests: A Field Guide, Google Books
Intro to Trees of Indiana: Flowering Dogwood, Got Nature? Blog, Purdue Extension – FNR
ID That Tree Spring Bloom Edition: Bladdernut, Got Nature? Blog, Purdue Extension – FNR
ID That Tree, Purdue Extension-FNR YouTube playlist

Lenny Farlee, Extension Forester
Hardwood Tree Improvement and Regeneration Center
Purdue Department of Forestry & Natural Resources

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Have you been hearing more annoying buzzing around your ears than normal? Maybe you’ve got an itch you just can’t seem to scratch. There’s a good explanation for that.

Indiana saw record amounts of rainfall in August, resulting in flooding across the state. These rain events and flooding, along with a warm start to September, have created the perfect storm of conditions for a large boom in mosquito populations. Although flooding itself may temporarily wash away some mosquito larvae, the standing water left behind as floodwaters recede can provide abundant new breeding habitat. Floodwater is one of several important mosquito breeding environments in Indiana, along with woodland pools, slow-moving streams, ditches, marshes and the edges of lakes.

Indiana is home to more than 50 species of mosquitoes, and different species use different types of water for reproduction. Some mosquitoes are associated with floodwater and other natural habitats, while others prefer smaller, humanmade containers. Following a period of heavy rain, water can collect in old tires, clogged gutters, rain barrels, birdbaths, catch basins, tree cavities and other objects around homes. It’s important to empty these water sources to reduce mosquito populations around the home.

The mosquito life cycle also helps explain why populations can appear to increase rapidly after a major rain event. Female mosquitoes can lay as many as 400 eggs after having a blood meal. Depending on the species and environmental conditions, eggs can hatch in less than three days. The larvae, commonly called “wrigglers,” take roughly 7-10 days to develop into pupae. After an additional 2-3 days, the next round of adult mosquitoes emerges. The water remaining after all of the August storms will produce many new generations of mosquitoes in a relatively short period of time. You may have already noticed an influx in these pesky insects!

The increase in mosquitoes is not just an outdoor annoyance. Several mosquito-borne viruses are concerns for Hoosiers, including West Nile virus, St. Louis encephalitis, La Crosse fever, Eastern equine encephalitis and Western equine encephalitis. Wild birds can serve as reservoirs for some of these viruses. Mosquitoes feeding on infected birds may subsequently transmit viruses when they feed on other animals or people. The Indiana Board of Health monitors for vector borne diseases, and has identified mosquito pools that are positive for West Nile Virus across the state.

For Indiana residents dealing with the aftermath of heavy August rainfall, reducing standing water around homes is an important first step. Removing or disposing of objects that collect water, regularly changing water in birdbaths and unused wading pools, keeping rain gutters unclogged, draining stagnant pools and puddles, and covering stored water such as rain barrels and cisterns are all great preventative measures around your home. Eliminating these breeding sites interrupts the mosquito life cycle before adults emerge.

Homeowners can also reduce exposure to adult mosquitoes. Wearing long-sleeved shirts and long pants, particularly during periods of high mosquito activity, can greatly reduce the chance of mosquito bites. Mosquitoes are often most active around dawn and dusk, so limiting outdoor exposure during those periods or staying in screened areas can reduce the chance of being bitten. EPA-registered mosquito repellents can provide additional protection.

As Indiana moves beyond August, mosquito numbers may remain elevated wherever standing water persists. Removing that water, improving drainage and protecting against bites can help Hoosiers reduce mosquito populations and limit their potential impact on people and animals.

Resources:
Indiana Department of Health
Mosquitoes, Purdue Extension Entomology
Mosquitoes In and Around the Home, The Education Store, Purdue Extension’s resource center
Community-Wide Mosquito Management, Purdue Extension – Entomology
Mosquitoes, Ticks and Other Arthropods, CDC Yellow Book, U.S. Centers for Disease Control and Prevention
Mosquitoes and ticks – little pests carry big risks – Got Nature? Blog, Purdue Extension – Forestry and Natural Resources (FNR)
Mosquitoes carrying Zika virus can be controlled and avoided – Got Nature? Blog, Purdue Extension – FNR
Field Season Upon Us! Be Prepared – Got Nature? Blog, Purdue Extension – FNR
Excess Rain and Pond Integrity – Got Nature? Blog, Purdue Extension – FNR
Health & Wellness Lessons, The Nature of Teaching
Subscribe – Purdue Extension-FNR YouTube Channel

Tabatha (Tabby) Flinn, Senior Regional Educator
Agriculture and Natural Resources, Purdue Extension

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Following a recent tornado in Monroe County, an Indiana homeowner noticed something remarkable among the storm damage. More than 30 trees, including walnut and butternut, were either uprooted or snapped. Yet several mature shagbark hickory trees stood largely untouched amid the destruction.

This observation prompted an interesting question: Is there something about shagbark hickory trees that makes them more resistant to tornadoes and high winds than other hardwood trees?

Answer: While every storm is different and no tree species is completely tornado-proof, the observation aligns with what foresters and arborists know about hickory wood.

Shagbark, along with other hickory species, is among one of the stronger trees native to Indiana. Because of its strength and shock-absorbency quality, hickory is a prime choice for tool handles and baseball bats as well as solid wood furniture and flooring.

Shagbark hickory (Carya ovata) is famous for more than its distinctive peeling bark. The wood itself possesses exceptional mechanical properties.

Hickory wood combines:

• High strength
• Notable elasticity
• Superior shock resistance
• High density

Together, these properties give hickory exceptional toughness – the capacity to absorb and redistribute energy before fracturing. This means its stems and branches may bend under wind loading rather than fail as abruptly as wood with lower toughness.

For that reason, hickory has long been valued for products subjected to repeated impacts. Traditional axe and sledgehammer handles, drumsticks, and baseball bats have often been made from hickory because it can absorb shock and withstand repeated bending stresses without breaking as readily as many other hardwoods.

Healthy Trees:
Healthy trees with vigorous growth and little decay generally withstand stress better than weakened trees. This is one reason why it is important to evaluate your trees before severe weather and storm season arrives. Identifying structural defects, dead branches, decay, or other potential hazards early can help reduce the risk of tree failure during high wind events. The following Purdue Extension-Forestry and Natural Resources (FNR) blog articles can help you assess your trees and recognize common warning signs:
Learn More – Got Nature? Blog Posts:
Tree Risk Management: What Every Property Owner Needs to Know
Spring Storms Are Coming: How to Reduce Tree Damage and Risk
Trees and Storms: Understanding Damage, Risk and Recover
Storms Can Cause Damage and Tree Cleanup: What You Need to Know
Southwest Damage, Scalding or Frost Cracking

Great Resource from The Education Store, Purdue Extension’s resource center:
Publication: Tree Defect Identification

Contact a Certified Arborist:
Consulting a certified arborist can help determine whether a damaged tree remains safe and healthy.
Find an Arborist, Trees are Good-International Society of Arboriculture (ISA)

Ben McAllister, Urban Forestry Specialist
Forestry & Natural Resources

More Resources:
Mechanical Damage to Trees: Mowing and Maintenance Equipment, Got Nature? Blog, Purdue Extension – FNR
Planting Your Tree Part 1: Choosing Your Tree, Purdue Extension YouTube Channel
Tree Pruning Essentials Video, Purdue Extension YouTube Channel
Why Is My Tree Dying?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources (FNR)
Tree Wound and Healing, Got Nature? Blog, Purdue Extension – FNR
Surface Root Syndrome, The Education Store
Report INvasive, Purdue Extension
Indiana Invasive Species Council
ID That Tree, Playlist, Purdue Extension – FNR YouTube Channel (Invasive White Mulberry, Siberian Elm, Tree of Heaven)
Fifty Common Trees of Indiana
Native Trees of the Midwest, Purdue University Press
Subscribe – Purdue Extension-FNR YouTube Channel

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Explore the latest newsletter updates on the Indiana Woodland Steward website. Stay up-to-date with forestry news and receive their free e-newsletter by subscribing at IWS Subscribe.

Highlights from the new Newsletter include:

• Ticks in Indiana Woodlands: Identification, Risk Reduction, and Prevention
  By Lee Green
  “Indiana’s forests, woodlots, and edge habitats support a diverse tick fauna that matters to both human and animal health. As reforestation has increased and wildlife hosts, especially white‑tailed deer, have…”
• How Emerging Digital Forestry Technologies Can Support Indiana Landowners
  By Erica Kronenberger and Zhao Ma
  Department of Forestry and Natural Resources, Purdue University
  “Indiana is home to more than 4.8 million acres of forestland, of which 4.6 million acres are timberland, and this amount increases every year1. Eighty four percent of Indiana’s forests is…”
• Prescribed Burn Associations: Neighbors Helping Neighbors Bring Fire Back to Indiana’s Landscape
  By Danielle Howard
  “Indiana’s ecosystems are shaped by fire. And to help them thrive, we need to bring fire back. But how do we re-ignite…”
• Tree of Heaven, Ailanthus altissima
  By Lenny Farlee, Ron Rathfon, Don Carlson, Brian Beheler
  “Tree-of-heaven (ToH), also known as Chinese sumac, varnish tree, or stink tree, is a large, rapidly-growing deciduous tree native to parts of China. Tree-of-heaven was introduced …”
• Days Gone By Volumn 35 Number 2
  Constructing a corn crib from native hardwoods on Mr. Herbert C. Thomas’ property in Vermillion County (photos by Roy C. Brundage, undated).

The Indiana Woodland Steward Newsletter is a resource offering a wealth of valuable information for foresters, woodland owners, timber marketing specialists, woodland and wildlife enthusiasts. The Indiana Woodland Steward Institute (IWS) is an entity made from 11 organizations within the state including Purdue University, Indiana Department of Natural Resources (DNR), and Indiana Hardwood Lumbermen’s Association (IHLA), that works to promote best usage practices of Indiana’s woodland resources through their Woodland Steward publication.

Resources
Hardwood Ecosystem Experiment (HEE) website
Hardwood Ecosystem Experiment – Wildlife Responses to Timber Harvesting, Purdue Extension
Forest Improvement Handbook, The Education Store
Invasive plants: impact on environment and people, The Education Store
Managing Your Woods for White-Tailed Deer, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, Purdue University Press
Virtual Tour Brings Forest Management for Birds to Life, Got Nature? Blog Post, Purdue Extension – Forestry and Natural Resources (FNR)
Breeding Birds and Forest Management: the Hardwood Ecosystem Experiment and the Central Hardwoods Region, The Education Store
Deer Impact Toolbox, Purdue Extension
Grassland Management Series, Purdue Extension Pond and Wildlife Management
Birdfeeder tips, The National Audubon Society
Explore the Rich World of Oaks with Purdue FNR Extension & Partners, Purdue Extension – FNR
Managing Woodlands for Birds Video, Purdue Extension-Forestry and Natural Resources YouTube Channel
Subscribe: Deer, Forest Management, ID That Tree, Woodland Management Moment, Invasive Species and many other topic video playlists Purdue Extension-Forestry and Natural Resources YouTube Channel

Dan McGuckin, President
Indiana Woodland Steward

Dr. Brian MacGowan, Extension Wildlife Specialist
Department of Forestry & Natural Resources, Purdue University

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Fall Hunting and Fishing Licenses on Sale
MyDNR, Indiana’s Outdoor Newsletter: Whether you’re gearing up to hunt, fish, or simply enjoy the outdoors this season, now’s the perfect time to prepare. Check out the IN DNR Sport License webpage as you will find information for:

• Deer
• Turkey
• Small Game
• Upland Game
• Migratory Birds
• Bobcats

New DNR Hunting, Fishing and Trapping License Mobile App Now Available
The GoOutdoorsIN mobile app launched in early July and is ready to download. It’s free and available for Android and iOS. With the app, you can purchase a license, check in your harvest, view your order history and active privileges and edit your customer account information from your smartphone.

When searching in the app stores, search “GoOutdoorsIN” so that the app pops to the top of the search results. You can also find it in the official DNR app.

Resources:
Hybrid Striped Bass Farmed Fish Fact Sheet, The Education Store
Largemouth Bass Farmed Fish Fact Sheet, The Education Store
Seafood Basics: A Toolkit for Understanding Seafood, Nutrition, Safety and Preparation, and Sourcing, The Education Store
Walleye Farmed Fish Fact Sheet, Eat Midwest Fish
Rainbow Trout Farmed Fish Fact Sheet, The Education Store
A Guide to Small-Scale Fish Processing Using Local Kitchen Facilities, The Education Store
Aquaculture Family Coloring Book Development, The Education Store
Eat Midwest Fish, Illinois-Indiana Sea Grant online resource hub
Ask an Expert: Wildlife Food Plots, video, Purdue Extension – FNR YouTube Channel
How to Build a Plastic Mesh Deer Exclusion Fence, The Education Store
Managing Your Woods for White-Tailed Deer, The Education Store
Handling Harvested Game: Episode 1, Field Dressing, video, Purdue Extension – FNR YouTube Channel
Deer Harvest Data Collection, Got Nature? Blog, Purdue Extension – FNR
Age Determination in White-tailed Deer, video, The Education Store
Subscribe to Purdue Extension-Forestry & Natural Resources YouTube Channel, Wildlife Playlist

Indiana Department of Natural Resources (DNR)

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Trees are lost every year from storm-related events. Major damage to parts of the tree or even the entire tree can result from high winds, snow and ice. Historic, specimen and significant trees provide value to the landscape and the community, and these trees can become aesthetic, financial and social losses in storms. In addition to physical damage or loss, risk and liability can become a concern to people and the surrounding property. Seasonal storms can cause extensive damage depending on timing and intensity. Deciding what to do with damaged trees is an important process.

Over time, trees swaying in the wind develop extra strength to withstand directional forces. If conditions are consistent, trees will initiate changes in their development to compensate for these loading patterns. They are biologically engineered to adjust to external loading, under normal conditions. This fiber strength can minimize the impact of external forces, unless they are excessive, such as during a storm. Typically, these loads come from wind. However, ice and snow also can cause damage from excessive weight on branches.

Typical weather events are not an issue for trees. They are engineered to withstand normal conditions. However, some storms can exert extreme forces, resulting in injuries of varying degrees. It is at this point that a tree owner or manager must make an informed decision based on the extent of the damage. The assistance of a trained arborist can help determine if a tree can be saved from sustained injuries, or if it requires removal

The response to storm damage should be based primarily on two concepts: risk and sustainability. If the tree is an imminent or likely danger to people, property or activities, the decision leaves little room for options. However, if the residual risk from the damage is determined to be of an acceptable level and the injury to the tree not life- threatening, mitigation may be possible to save the tree and reduce the danger.

There are several types of tree damage that occur from violent weather. Each has its own specific assessment considerations. All parts of the tree should be inspected during a post-storm assessment.

Some common damage found includes:
Wind Throw
The entire tree is “pushed over” by high winds. The loading forces on the aerial tree portions are too great for the developed root system. Previous harm from activities such as construction damage, lack of maintenance and attacks from pests predisposes the tree to damage with poor anchorage or health. Inspect the root plate of each tree on a regular basis to determine if there are any root health issues. Look for fungal fruiting bodies, exposed roots, lifting or other damage. Larger or more mature trees that have been completely uprooted are typically not salvageable

Stem Failure
Trees will fail at their weakest point. Typically, failure is caused by the combination of a defect and external forces. Old injury sites or wounds are common on tree trunks, and these damaged areas can lead to tree failure under excessive loads. Also, trees newly exposed to prevailing winds from development or removal can be at greater risk. Trunks can snap or buckle if the tree is unable to withstand the wind forces. Damage from stem failure usually cannot be repaired. Trees with major defects on the trunk should be examined carefully to determine the degree of risk for that location. Look for decayed areas, cavities, nesting holes and fungal fruiting bodies for indicators. The extent and location of these defects will help the arborist determine the potential for failure.

Crown Twist
The tree canopy contains an array of leaves, twigs and branches that make up the crown portion of the tree.

Many times, the crown can have an uneven geometry from competition or poor pruning, leaving an unequal appearance. The result of this situation in high winds can be trouble. Uneven wind loading on the lopsided crown produces a damaging twist on major branches and the stem. This twisting causes torsional stress, much like twisting a rope backwards, resulting in splits and cracking. This is especially damaging around old wounds or other defects, which can lead to failure. Close investigation is necessary to spot these often-subtle cracks. Often this damage can be mitigated in branches; however, take caution with damaged trunks.

Root Failure
Stability and anchorage are important roles of the root system for keeping a tree upright.

Both the structural, woody roots and the fine absorbing roots create an effective network of strength to withstand wind-loading forces. As the tree becomes larger, increased stress is put on the roots to maintain stability.

Roots that are restricted, diseased or damaged can cause trees to lean and fall. Careful examination of the root plate is needed to determine if anchorage is compromised. Look for heaving soil and roots around the tree trunk, which can present a high-risk situation. The presence of pulled or broken roots, as well as any mushroom development around the root system, also can be indicators of defects in the roots. Depending on the age, size and degree of exposure, mitigation may be possible. Young trees with healthy roots systems can be up righted and staked or guyed with success. However, if more than 30 percent of the roots are exposed, removal may be the better option.

Branch Failure
Tree branches are easy victims of loading forces. Whether it is axial loading from snow or ice accretion or lateral, side loading from wind, damage is frequent. Because branches can sometimes be poorly attached to the main stems, they can easily experience injury. However, this structural arrangement allows the branches to be flexible and disposable, and easily shed in times of stress to help dampen the impact of wind, minimizing damage to the larger, structural branches.

Poor architecture and development, such as codominant stems and included bark in branch junctions, predisposes branches to failure and often are the first to experience damage. Branch failure can be easily repaired and not lethal to the tree unless more than half the crown has been destroyed. However, they can create high-risk situations in the wrong places. Learn to recognize dead, broken, hanging limbs or other signs of damage to reduce risk. Often twisted and cracked branches are difficult to see and may need closer inspection by an arborist to identify. Be sure to use pruning best practices when correcting damage in the crown.

There are other forms of damage, such as lightning damage, which can be detrimental and even lethal to trees. A certified arborist or qualified consulting arborist can help provide a prognosis.

Storm Damage Prevention
It is impossible to protect a tree from storms or prevent damage from weather events. However, there are some actions that can minimize injury to trees.

The best preparation begins when trees are young or newly planted. Do not stake or guy trees unless absolutely necessary. This prevents development of internal adjustments to wind with response wood growth. Let the tree adjust to local conditions by allowing natural movement.

Functional pruning helps trees form a healthy, more wind-resistant crown. Inspection and corrective pruning of newly planted trees produces a stronger structure. Eliminate codominant stems by pruning these weak- forked branches. Choose a good, strong central leader for young trees. This will prevent losing the whole crown in the future. Choose branches with even spacing, radially around the tree for balance and symmetry.

Inspect trees for broken, dying, diseased and dead branches each year. Also, conduct a visual assessment after a storm event. Look for crossing branches, which lead to problems where rubbing produces damage and decay. Always favor branches with a “U” shape or greater than 45° angle, which forms an optimal connection. These branches will have fewer tendencies to split or break from wind or ice loads. Eliminate branches with bark inclusion and tight or narrow branch junctions.

Branch training is essential for sustainable, long-term tree plantings.

Under no circumstances should a tree be “topped” to prevent wind or ice damage. Topped trees produce many small, poorly attached sprouts and as they grow, the canopy weight and density is actually increased. In addition, topped branches often develop decay and diseased stems, which further weakens the tree and makes the branches more susceptible to breakage. Topping may seem to make a tree safer, but it actually increases the potential for storm damage with unhealthy epicormic sprouting and additional decay in the stems.

When mature trees develop unequal crowns, prune to improve symmetry. However, remember pruning best practices and never remove more than 30 percent of the crown at one time. It may take several years for crown restoration. Good pruning techniques also promote faster healing of the cuts.

Do not try to “wind-proof” the tree by thinning out branches. Trees rely on proper branching habits and placement to dampen the wind energy affecting them. Excessive and unnecessary pruning creates wounds and additional stress on tree health. Allow the tree to develop fully and naturally by pruning only when needed. However, proper health care includes pruning for vigor. This includes removing dead, dying or diseased branches, poor branch attachments, crossing branches and narrow branch angles. After this functional pruning, some thinning is achieved to reduce drag or sail in the canopy.

A healthy tree is the best defense to any challenge the tree may face in its lifetime. Appropriate watering and fertilization improves root growth and structure, making the tree more stable. Monitor for pest problems and treat when needed to prevent insects and diseases from weakening tree health. Remove diseased branches, as needed, to minimize spread and potential damage.

Risk Assessment
Following a severe storm event, not all trees will need to be pruned or removed, and many will need little or no treatment. After identifying the type of damage, risk assessment is the priority. One of the more critical tasks for the property owner is determining an acceptable level of risk. It is the responsibility of a tree owner or manager to maintain and manage their trees to protect the safety of others. This usually requires assistance from a well-qualified arborist.

Post-Storm Response

• Safety first! Stay clear and look for dangerous hanging limbs, broken branches and other failures before beginning cleanup or inspections. Keep others clear of the areas beneath and around damaged trees. Be alert for power lines that could be involved with damaged trees. All utility lines should be considered energized and dangerous.
• 

  Functional pruning creates a healthier tree that is less prone to
  damage from ice and wind.

  Damage assessment is the next step. Review the affected tree or trees to determine the level of injury. Some trees may not require any action and can recover on their own. The challenging part of the assessment is deciding which trees can be pruned properly to a healthy state and which trees should be removed. Many factors are involved in the decision, and damage may be hidden or difficult to determine. It is critical to get a professional arborist with credentials to conduct the assessment and the work required to mitigate the injured parts of the tree.

• Match skills with the situation when it comes to reparation of damages and restoration. Be able to recognize when tree damage requires advanced training and is best handled by the arborist. Tree work is dangerous and the hazards are compounded when storm damage is involved. Leaning trees, broken and pinned branches, as well as utility lines, can create life-threatening situations.
• Basic cleanup can be helpful in the post-storm response process. Removing downed branches and limbs, and performing basic pruning on smaller, injured trees, can help speed recovery from the event. This also provides for a better evaluation of the site and the larger affected trees.

Hire a Certified Arborist
One key to dealing with the challenges of storm damage is to consult a qualified tree service. Finding a qualified tree care professional is important protection for the property owner. Sometimes less credible companies follow storms to take advantage of a bad situation. Knowing how to hire a reputable arborist can protect a property owner from being victimized. A professionally trained arborist can determine if a tree can be saved. Even if the tree must be removed, safety and training are needed to prevent additional damage or injury from the removal. An International Society of Arboriculture Certified Arborist can help save a tree or improve the risk situations that follow storms. Also, choosing an accredited company brings the highest level of standards for client satisfaction and safety.

A list of qualified arborists can be obtained by contacting the following sources:

• International Society of Arboriculture website.
  https://www.isa-arbor.com/
• Tree Care Industry Association website.
  https://www.tcia.org/

For more information contact: Purdue Extension – Forestry and Natural Resources Office, fnrextension@purdue.edu, 765-494- 3590.

Resources:
Find an Arborist video, Trees are Good-International Society of Arboriculture (ISA)
Caring for storm-damaged trees/How to Acidify Soil in the Yard – In the Grow, Purdue Extension
Tree Risk Management – Got Nature? Blog, Purdue Extension – FNR
Why Is My Tree Dying? – Got Nature? Blog, Purdue Extension – Forestry and Natural Resources (FNR)
Mechanical Damage to Trees: Mowing and Maintenance Equipment – Got Nature? Blog, Purdue Extension – FNR
Spring Storms Are Coming: How to Reduce Tree Damage and Risk – Got Nature? Blog, Purdue Extension – FNR
Trees and Electric Lines – The Education Store
Planting Your Tree Part 1: Choosing Your Tree, video, Purdue Extension – FNR YouTube Channel
Tree Installation: Process and Practices, The Education Store
Tree Wound and Healing, Got Nature? Blog, Purdue Extension – FNR
Subscribe – Purdue Extension-FNR YouTube Channel

Lindsey Purcell, Executive Director
Indiana Arborist Association

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In the past few years, prescribed fire has caught on in Indiana. Government agencies and land trusts have increasingly used it as a tool to create wildlife habitat, manage for rare and endangered species, and promote ecosystem health. On these properties, fire has been reintroduced to landscapes it shaped for thousands of years.

However, while fire is being used to improve our public lands, 96% of Indiana is privately owned. If fire is truly going to spread, private landowners need to start burning as well. One means to that end is the formation of Prescribed Burn Associations.

Prescribed Burn Associations (PBAs for short) are, at their most basic level, groups of people who burn together. By burning as a group, members of the PBA can share expertise, equipment, and labor to get more fire on the landscape. They can also pursue training and funding opportunities that may not be readily available to individuals. In Missouri, the formation of 18 PBAs has led to prescribed fire on more than 11,000 acres across the state in the past 10 years. The model for success is already out there.

Indiana is just getting into the PBA game. One PBA based in Daviess County already exists, and interest meetings for two more in Brown and Harrison are on the calendar for fall of 2026. More meetings are in the works across other parts of Indiana.

So, how does one get involved with a PBA? If you happen to be in one of the counties mentioned above, it’s as simple as contacting the leader or attending a meeting. Fire experience is not a requirement, only enthusiasm and a willingness to learn. Members don’t have to be landowners either – many PBAs include professionals, students, and folks who are simply interested in learning new land management skills.

If there isn’t a PBA in your area, consider getting one started. Find a few other people who want to be involved, hold an interest meeting to share information and sign folks up, then elect a board. From there, the board guides the organization and helps create its rules, and the larger membership decides on a coverage area and name. Then, all that’s left to do is inventory available equipment and expertise, line up some burns, and start getting good fire on the ground.

Still not sure how to start? That’s where we can help. If you are interested in starting or joining a PBA, you can fill out this PBA Interest Form, and we will reach out to help you get started.

With the formation of PBAs across the state, fire can be more broadly used as a management tool, benefiting the natural world and humans alike. For more information on PBAs, including formation tips and upcoming meetings, visit the Prescribed Burn Associations website.

Resources:
Indiana Prescribed Fire Council (INPFC)
Effective Firebreaks for Safe Use of Prescribed Fire, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources (FNR)
Prescribed fire: 6 things to consider before you ignite, Got Nature? Blog, Purdue Extension – FNR
Getting Certified as an Indiana Certified Prescribed Burn Manager, Got Nature? Blog, Purdue Extension – FNR
FNR Ask The Expert: Prescribed Fire, Purdue Extension – FNR YouTube Channel
Hardwood Ecosystem Experiment: Prescribed Fire, Purdue Extension – FNR YouTube Channel
Wild Habitat Hint: Late Growing Season Prescribed Fire, Purdue Extension – FNR YouTube Channel
Wild Habitat Hint: Prescribed Fire Techniques – Backing Fire, Purdue Extension – FNR YouTube Channel
Wild Habitat Hint: Prescribed Fire Techniques – Flanking Fire, Purdue Extension – FNR YouTube Channel
Wild Habitat Hint: Prescribed Fire Techniques – Strip Head Fire, Purdue Extension – FNR YouTube Channel
Wild Habitat Hint: Prescribed Fire Techniques – Point Source Fire, Purdue Extension – FNR YouTube Channel
Wild Habitat Hint: Prescribed Fire Techniques – Ring Fire, Purdue Extension – FNR YouTube Channel

Danielle Paige Howard, Extension Prescribed Fire Specialist
Purdue University Department of Forestry and Natural Resources

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