Pathogenic avian influenza confirmed in three red fox kits

Pathogenic avian influenza confirmed in three red fox kits

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DNR News

May 12, 2022

Media contacts:
For questions on wild birds or mammals: Eric Hilliard (DNR), 517-281-5607
For questions on poultry or domestic birds: Jennifer Holton (MDARD), 517-284-5724


Highly pathogenic avian influenza confirmed in three red fox kits from Lapeer, Macomb and St. Clair counties

The Michigan Department of Natural Resources received confirmation Wednesday evening that three red fox kits died from highly pathogenic avian influenza – the state’s first such confirmation of the HPAI virus in wild mammals. The fox kits, collected between April 1 and April 14, came from three separate dens in Lapeer, Macomb and St. Clair counties.

The DNR had received a report from a wildlife rehabilitator in southeastern Michigan about the fox kits exhibiting neurologic signs of HPAI before death. The kits were observed circling, tremoring and seizing. Two of the three died within hours of intake, while one appeared to respond to supportive therapy but then died in care. Interestingly, an additional kit that was a sibling of the Macomb County kit did survive, but developed blindness, making her non-releasable. This kit will be housed at a local nature center.

Highly pathogenic avian influenza is a virus known to affect birds throughout North America, with detections in backyard flocks and commercial poultry facilities, to date, in 34 states and detections in wild birds in 35 states. HPAI is highly contagious and poultry are especially vulnerable. In addition, this viral strain also affects waterfowl, raptors and scavengers (like turkey vultures, eagles and crows).

In Michigan, HPAI has been confirmed in 69 wild birds, with the outbreak continuing to spread throughout North America. Follow the current status of HPAI in Michigan at Michigan.gov/BirdFlu and Avian influenza updates (Michigan.gov).

The three fox kits were sampled for HPAI at the DNR Wildlife Disease Lab and submitted to the Michigan State University Veterinary Diagnostic Laboratory for testing. All three kits tested “non-negative” (presumptive positive) on May 6 and were confirmed positive by the National Veterinary Services Lab in Ames, Iowa, on May 11. The virus was detected in swabs collected from the nose, mouth, throat and brain tissue of all three kits, and a full postmortem examination was conducted to aid in learning more about this disease in foxes.

The DNR Wildlife Division continues to collaborate with many partners within the state and across agencies to share findings.

HPAI in red foxes outside Michigan

These cases in Michigan are not the first confirmed detections of HPAI in red foxes:

“HPAI H5N1 viruses may occasionally transmit from birds to mammals, as occurred in these cases, and there may be additional detections in other mammals during this outbreak, but they likely will be isolated cases,” said Megan Moriarty, the state wildlife veterinarian with the DNR. “At this point, it is unclear how the fox kits became infected, but it’s possible that they were exposed by consuming infected birds, such as waterfowl.”

Reporting sick or dead wildlife

Anyone who notices what appears to be unusual or unexplained deaths among wild birds or sick, dead or neurologically abnormal foxes is asked to report the information by:

Moriarty encouraged the public to continue sharing such wildlife observations, even though the DNR will be unable to respond to every person submitting a report.

“We greatly appreciate the effort to report instances of animals that are sick or appear to have unusual or unexplained deaths, because those tips often lead to important information,” said Moriarty. “Every bird or animal reported may not be tested for HPAI, but all observations are important.”

Highly pathogenic avian influenza primarily affects birds, but it is important to remember that it can be a zoonotic disease (one that has the potential to be transmitted from domestic or wild animals to humans). According to the U.S. Centers for Disease Control and Prevention, the public health risk associated with HPAI remains low, but advises people to avoid handling any sick or dead wild birds. If it is necessary to move a dead bird, use a plastic bag or shovel to do so and thoroughly wash your hands afterward.

HPAI in domestic flocks

Highly pathogenic avian influenza is highly contagious and can be spread to domestic flocks by wild birds, through contact with infected poultry, by equipment, and on the clothing and shoes of caretakers. Make sure domestic poultry (e.g., chickens, turkeys, geese and ducks raised for the production of meat or eggs) is separate from and has no contact with wild birds.

The Michigan Department of Agriculture and Rural Development stated that no birds or bird products infected with HPAI will enter the food chain. As a reminder, all poultry and eggs should be handled and cooked properly, with a safe cooking temperature of 165 degrees Fahrenheit.

Domestic bird owners and caretakers should watch for unusual deaths, a drop in egg production, a significant decrease in water consumption or an increase in sick birds. If avian influenza is suspected, immediately contact MDARD at 800-292-3939 (daytime) or 517-373-0440 (after hours).

For more on highly pathogenic avian influenza, visit the U.S. Department of Agriculture’s HPAI webpage or the state of Michigan’s HPAI webpage at Michigan.gov/BirdFlu.


Note to editors: An accompanying photo is available below for download. Caption information follows. Credit: Michigan Department of Natural Resources.

  • Red fox kit: A healthy red fox kit in a grassy Michigan forest.

 

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Get ready for summer with NotMISpecies webinars

Get ready for summer with NotMISpecies webinars

 
May 10, 2022
Contact: Joanne Foreman, 517-284-5814

Decon, didymo and DIY: Get ready for summer with NotMISpecies webinars

Now that temperatures finally are warming up across Michigan, it’s time to head outdoors! Whether you’re planning a weekend on the water or digging into a landscaping project, this summer’s NotMISpecies webinars offer tips to help you prevent and manage invasive plants and animals to protect the places you love.

NotMISpecies webinar bannerWith more people  ̶  and more invasive species  ̶  on the move, decontamination (or “decon,” for short) is now an essential part of travel. Upcoming webinars will show you the best tools and methods for assuring no invasive hitchhikers tag along on your journeys. If invasive plants have crept onto your property, NotMISpecies is also offering some do-it-yourself tips for management.

Supported by the Michigan Invasive Species program, the monthly, hourlong webinars are designed to keep people informed about available programs, current research and emerging issues in the state and the Great Lakes region. Question and answer sessions and links to resources help attendees get the most out of each presentation.

“Clean It Up, Drain It Out, Dry It Off” (9 a.m. Thursday, May 12) will show how easy it is for boaters to adopt the Clean, Drain, Dry process to prevent the spread of aquatic invasive species. Kelsey Bockleman from Michigan State University Extension and Kevin Walters from the Michigan Department of Environment, Great Lakes, and Energy will provide a live demonstration of each step in the process. The team will demonstrate watercraft decontamination essentials using basic tools like towels and brushes and display the features and operation of a trailer-mounted mobile boat washing system.

Didymo on fishing fly“Didymo: What You Need to Know” (9 a.m. Thursday, June 9) will provide important information for anyone fishing or boating in Michigan’s rivers. The December 2021 discovery of didymo (also known as “rock snot”), an aquatic nuisance algae species, in the Upper Manistee River signals the need for increased decontamination practices by all river and stream users. Dr. Ashley Moerke of Lake Superior State University will provide an overview of didymo’s ecology, potential effects on cold-water organisms, and what LSSU researchers are doing to better understand spread, impacts and potential triggers of didymo nuisance blooms. Moerke will be joined by staff from the Department of Natural Resources and EGLE to answer questions and discuss techniques to help prevent further spread.

“Not in My Backyard! Managing Invasives with Help from CISMAs” (9 a.m. Wednesday, July 27) demonstrates how you can control invasive plants in your landscape. Vicki Sawicki of North Country Cooperative Invasive Species Management Area and Elise Desjarlais of Lake to Lake CISMA will share identification tips and treatment tricks for common invasives including garlic mustard, Japanese knotweed and several invasive shrubs. Learn the importance of monitoring, re-treating and restoring beneficial vegetation after invasive species removal and how to get additional resources from your local CISMA.

The webinar series takes a break in August and will be back in September with more great information.

If you can’t wait for its return, take some time to catch up on topics you might have missed, including this year’s forecast for spongy moth (formerly gypsy moth), collaborative efforts in invasive carp management, and the threat posed by spotted lanternfly.

Recorded versions of all previous NotMISpecies webinars are available at Michigan.gov/EGLE/Outreach under “Featured Webinar Series.”

Michigan’s Invasive Species Program, a collaborative effort of the departments of Natural Resources; Environment, Great Lakes, and Energy; and Agriculture and Rural Development, coordinates and supports invasive species initiatives across the state and provides support through the Michigan Invasive Species Grant Program.

Celebrating 75 years of launching boating adventures

Celebrating 75 years of launching boating adventures

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speedboat in the background with mother and daughter paddle boarding

DNR News

May 9, 2022
Contact: Maia Turek, 989-225-8573

Celebrating 75 years of launching boating adventures

Michigan State Waterways Commission logo with Celebrate 75 years of Michigan boating taglineBoating has been a human pursuit for at least 8,000 years, with waters tempting us toward adventure, providing food and helping to build cities and economies. Those motivations for taking to the water have persisted and are still true today.

In 2022, Michigan is celebrating the 75th anniversary of the waterways program, a modern concept meaning the access and infrastructure needed for boating: launches, marinas, gas docks, locks and dams, and the maintenance to keep these destinations accessible and operational.

The Michigan State Waterways Commission, a seven-member advisory commission appointed by the governor, was created in 1947 to advise on how Michigan would place, fund and manage harbors to provide safe, navigable boating on Michigan’s Great Lakes. The program has evolved significantly since its early charge and today is looking toward the future of boating to ensure our state continues to be a world-class freshwater boating destination.

“Michigan is blessed with a fantastic diversity of water-based recreation, and our waterways program is integral to making the most of those opportunities and boosting quality of life for communities all over the state,” said Ron Olson, chief of the DNR Parks and Recreation Division. “Nearly 90 percent of Michigan’s registered boats are under 25 feet long, and many of those boaters rely on safe, accessible points of entry to get on the water.”

Olson credited Michigan’s waterways program for the acquisition and development of nearly 1,300 public boating access sites. Through the harbor of refuge program, too, local and state harbors are available nearly every 30 miles surrounding the Great Lakes shoreline.

“The Michigan State Waterways Commission advises the DNR, the Parks and Recreation Division and the waterways program to ensure that boaters are part of the conversation and their voices are heard,” Olson said. “Thanks to the many volunteer commissioners who have served our enviable waterways program for the past 75 years and built a strong legacy for the future of Michigan boating.”

Origin, evolution of waterways management

Established by the Michigan Legislature in 1947, the commission was created to take advantage of federal monies made available from the 1945 Rivers and Harbors Act, which provided funding for U.S. Army Corps of Engineers projects on navigable waters of the nation. Congress then approved the plan for Michigan to create a safe harbor of refuge network on the state’s Great Lakes shoreline. This also funded:

  • Protective breakwater structures still in use.
  • Harbor basin and channel dredging to establish many of the harbors we know today.
  • Routine maintenance dredging responsibilities for which the state, in turn, would provide mooring and boat ramp facilities.

This plan formed the basis of the state’s harbor program.

By 1949, the state had launched additional efforts to expand the harbor of refuge network by collaborating with local units of government (counties, townships and cities) on the construction, maintenance and operation of these facilities. This started what is known today as the Grant-in-Aid Program, establishing federal, state and local partnerships in the development of Great Lakes harbor facilities. Today, there are 82 state-sponsored harbors.

In 1968, the functions of the commission were transferred to the Department of Natural Resources and added the responsibility of selecting and creating boating access sites (commonly referred to as boat launches) on Michigan’s abundant inland lakes, too.

With this expansion of the program, funding to meet the needs of Michigan’s boaters became a priority, which is how Michigan became the first state in the nation to establish a state marine fuel tax. This carved out a portion of the state tax on the sale of gasoline for a fund that helps to provide boaters better, broader access to Michigan’s waters. Michigan was the first state in the nation to establish such a fund, creating a model for recreational boating now used by many other states.

Today, Michigan is home to more than 800,000 registered recreational boaters , with the industry contributing $7.8 billion a year to Michigan’s economy. At 3,288 miles, Michigan’s Great Lakes shoreline is longer than that of the Atlantic coast and our state is home to some 11,000 inland lakes.

Celebrate waterways your way

Everyone is invited to help mark this Michigan maritime moment. Visit Michigan.gov/DNR/CelebrateBoating to learn ways you can celebrate, including:

  • Signing up for “Water Wednesday” texts.
  • Seeing aerial drone footage of some of Michigan’s harbors and marinas.
  • Sharing your photos.
  • Learning about the upcoming Waterways Adventure Lab and Paint the Waterways programs.
  • Learning about new sustainable boating efforts.
  • Downloading free coloring pages.
  • Finding 75th anniversary merchandise.

Help shape the future of waterways

Boaters and others interested in having their voices heard are encouraged to learn more about the Waterways Commission, including reviewing past meeting minutes and upcoming meeting schedules. These public meetings are an excellent forum to share ideas and ask questions related to boating access, infrastructure and sustainability.

More on Michigan boating, celebration details and information on the commission can be found at Michigan.gov/Boating.


Note to editors: High-res boating photos and logos are available in the anniversary toolkit, found at the bottom of the Michigan.gov/DNR/CelebrateBoating webpage.

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Showcasing the DNR: New services coming to Porcupine Mountains

Showcasing the DNR: New services coming to Porcupine Mountains

 
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A vintage wooden sign displays an ad for skiing at the Porcupine Mountains.

New services coming to Porcupine Mountains Wilderness State Park

By JOHN PEPIN
Michigan Department of Natural Resources

At the conclusion of a cooperative and productive partnership with Gogebic Community College that spanned 10 years, the Michigan Department of Natural Resources will now again operate the popular downhill winter sports complex at Porcupine Mountains Wilderness State Park in Ontonagon County.

In addition, after more than three decades, the DNR has also contracted with a new concessionaire to run several business enterprises familiar to park visitors, as well as provide new park amenities the DNR hopes will enhance the ski hill and park operations on a year-round basis.

Park shuttles, sea kayak rentals and more are coming soon.

An exterior autumn photo shows the Porcupine Mountains Sports Complex chalet.Across Michigan, the DNR partners with businesses and outside organizations to enrich visitor experiences at state parks. Concessions contracts cover numerous features, including park stores; kayak, bike and other rentals; food and water parks.

In 2021, a total of 76 concessions contracts were in place for DNR operations across Michigan. The revenue statewide from those concessions, leases and operating agreements totaled $2.2 million.

At the Porcupine Mountains, home of Michigan’s largest state park, a ski hill has been operated since the 1940s, along with a lodge concession, ski rentals and, more recently, a Frisbee golf course during summertime.

The park also offers fall color ski lift rides and maintains a store at the site of a historic park headquarters and a store at the park’s visitor center.

In addition, in 2006, the DNR entrusted the local volunteer group Friends of the Porkies to develop three programs at the park, which have proven successful. They include the park’s Folk School, annual music festival and Artist in Residence program.

In 2012, Gogebic Community College took over the use agreement at the ski hill, including the winter food and the ski shop facilities.

This arrangement would remain in place until September 2020, when college President George McNulty contacted the DNR to announce the facility’s intention to discontinue management of the ski hill.

“At the start of this partnership, Gogebic’s vision was to assist the State of Michigan in rebuilding the Porkies’ operations and facilitating economic development and/or stability in the region,” McNulty wrote in a letter to the DNR. “Over the last eight years, the college now believes that we have accomplished this vision.”

The DNR asked the college if it would continue operations through the 2021-2022 season. The department had also granted contract extensions to a concessionaire who had been operating at the park for more than three decades to help provide a smooth transition.

“The college is committed to the prosperity and growth that was achieved over our tenure, and if needed, is more than willing to collaborate and to be a resource for the new vendor in keeping the Porkies successful,” McNulty wrote.

An interior photo of vintage skis and other memorabilia at the Porcupine Mountains ski chalet.Doug Rich, DNR western U.P. Parks and Recreation Division district supervisor, said the relationship with the college has been beneficial, acknowledging the college’s contributions to stabilizing operations at the ski hill.

“GCC set us up for future success,” Rich said.

In fall 2020, the DNR requested bids for combined summer-winter management at the park, including all ski hill operations, chalet, cafeteria, park stores and vending machines.

Two bidders submitted proposals, including the prior concessionaire, but neither met bid qualifications.

The DNR took several months to consider its options, deciding in fall 2021 on a cooperative approach, which would see DNR Parks and Recreation Division staff operate the outdoor ski hill functions year-round, while a concession contractor would operate the indoor chalet, cafeteria, park stores, retail sales and rentals, vending machines, disc-golf course and events.

The contractor, Friends of the Porkies and park staff would collaborate for major events at the ski hill.

“We are prepared to once again take on this important role in partnership with our concession contractor,” Rich said. “In doing so, we plan to fulfil the DNR Parks and Recreation Division’s mission to acquire, protect and preserve the natural and cultural features of Michigan’s unique resources, and to provide access to land- and water-based public recreation and educational opportunities as implemented through the division’s Strategic Plan.

“Having a sustainable management system in place will help ensure the stability of this important component of the entire park resource.”

A vintage sign advertises the Porcupine Mountains ski hill.The DNR began a second bidding process in alignment with Michigan law and the DNR’s commercial use policy.

In 2021, Simple Adventures – an Auburn Hills company with 11 managers and more than 75 employees – secured contracts with the DNR to operate a concession at Interlochen State Park in Grand Traverse County and Fort Custer Recreation Area in Kalamazoo County.

The firm invested a total of $11,000 in those two facilities, resulting in revenue increases of 45% and 20%, respectively.

The competitive bidding process at the state park in the Porcupine Mountains included advertising for bids and a sealed-bid-opening before evaluation of proposals by a panel that independently scores each bid. An optional pre-bid meeting was held prior to the 2020 bid request.

“This process requires applicants to provide their best proposal, including everything they are willing to offer and can demonstrate they can provide,” Rich said. “…One of the long-standing goals was to provide an enhanced variety of recreational opportunities to make the ski area more of a year-round destination and to encourage visitors to stay longer in the area.”

According to the bid specifications, the DNR wanted the contractor to develop previously unavailable warmer-weather activities.

Some expansion ideas contemplated by the DNR included: installing a second ski chairlift, developing park shuttle service between Memorial Day and mid-October, building fat tire and mountain bike trails around the ski hill area, creating alternative lodging for guests or staff, and acquiring a liquor license at the ski hill cafeteria.

An early autumn photo shows two park visitors on the ski lift at Porcupine Mountains.At a minimum, the prospective contractors were also expected to provide firewood sales and sea kayak and bicycle rentals.

Simple Adventures offered added amenities, including year-round food at the chalet, shuttle service to the Lake of the Clouds Scenic Overlook and the Presque Isle Unit of the park, online food ordering and equipment rentals.

Specialized services beyond concession management were also offered, like mountain biking and sea kayaking services to park guests. Simple Adventures and the DNR are currently hiring workers at the park.

The new services are expected to be welcome additions to the visitor experience at the 59,020-acre state park.

From the heights of a pronounced escarpment overlooking the Big Carp River and at Summit Peak, to the shimmering beauty of Lake Superior at Union Bay, the waterfalls of the Presque Isle River at the park’s west end and the heart of the territory, marked with dozens of hiking trails, the Porcupine Mountains are a fabulous destination visited by more than half a million people every year.

Find out more on job openings with the DNR or Simple Adventures.

Check out previous Showcasing the DNR stories in our archive at Michigan.gov/DNRStories. To subscribe to upcoming Showcasing articles, sign up for free email delivery at Michigan.gov/DNR.


Note to editors: Contact: John Pepin, Showcasing the DNR series editor, 906-226-1352. Accompanying photos and a text-only version of this story are available below for download. Caption information follows. Credit Michigan Department of Natural Resources, unless otherwise noted.

Text-only version of this story.

Chalet: An interior photograph shows vintage skis and other memorabilia at the Porcupine Mountains Ski Chalet.

Exterior: An exterior photo shows the Porcupine Mountains ski chalet in Ontonagon County.

Lift: An early autumn photo shows two park visitors riding the ski lift at Porcupine Mountains Wilderness State Park in Ontonagon County.

Sign-1 and Sign-2: Vintage signs advertising the ski hill at Porcupine Mountains Wilderness State Park are shown from the chalet at the hill.

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The Michigan Department of Natural Resources is committed to the conservation, protection, management, use and enjoyment of the state’s natural and cultural resources for current and future generations. For more information, go to Michigan.gov/DNR.
It’s spongy moth season: What to expect in 2022

It’s spongy moth season: What to expect in 2022

May 2, 2022

Contact: Cheryl Nelson 231-287-1714, or Joanne Foreman 517-284-5814

It’s spongy moth (formerly gypsy moth) season: What to expect in 2022

While the new name still may be unfamiliar, the invasive spongy moth, formerly referred to as gypsy moth, is well known across Michigan. In its caterpillar life stage, the insect is a voracious leaf eater.

Hundreds of tiny, black caterpillars crawl on and around a fuzzy, tan egg mass on a tree trunk.Spongy moth populations were high last year across Lower Michigan, and many people are wondering whether the nuisance caterpillars will be plaguing their backyard events again in 2022. To find out, NotMISpecies webinar hosts brought together experts to share their insights on the invasive moth’s history in Michigan and the U.S. and what to expect this year.

Panelists Dr. Deborah McCullough from Michigan State University, Dr. Steven Katovich of the U.S. Department of Agriculture’s Forest Service, Susie Iott of the Michigan Department of Agriculture and Rural Development and James Wieferich of the Michigan Department of Natural Resources together represent nearly 100 years of knowledge about the pest. Following their April 14 session, they responded to participants’ questions in a written document.

Key points from the presentation and their answers to the most-asked questions about spongy moth are summarized here.

What is the forecast for 2022?

Based on recent aerial survey data, much of northern Lower Michigan has experienced two or three years of defoliation, which typically marks the end of an outbreak cycle. Egg mass surveys in the fall of 2021 confirmed that many areas in Michigan should expect a collapse of spongy moth activity in much of lower Michigan – meaning far fewer caterpillars this year. However, a few areas like Jackson County and parts of southwest Lower Michigan had large, healthy egg masses and may have high density populations again this summer.

What causes population crashes?

The last large-scale spongy moth outbreak occurred in Michigan from about 1992 to 1996. Since then, localized areas have experienced occasional outbreaks. Suppression efforts in the 1990s have continued to keep spongy moth populations largely in check while naturalizing infestations into Michigan’s forests and urban forest ecosystems.

In 1991, Entomophaga maimaiga, a fungal pathogen found to be killing spongy moth caterpillars in the northeastern states, was deployed in Michigan. This fungus proved an effective biological control, remaining in the soil from year to year and infecting spongy moth caterpillars that come in contact with the fungal spores. Moist soils help to activate the fungus, enabling spores to disperse and affect spongy moth populations. Caterpillars affected by the E. maimaiga fungus remain attached to tree trunks and hang straight down.

A desiccated caterpillar body hanging on a tree trunk in an inverted "V" position.Nucleopolyhedrosis virus occurs naturally in all spongy moth populations. NPV spreads through contact between caterpillars during outbreaks, causing a population crash. To determine whether NPV is at work in a certain location, look for dead caterpillars attached to tree trunks in an upside-down “V” position.

Both the NPV virus and E. maimaiga fungus can affect the same population, and dead NPV and fungus-killed caterpillars can be on the same tree.

These natural enemies of the spongy moth are now well-established across Michigan and are actively reducing populations. To date, these pathogens typically have limited the size and length of outbreaks to a couple years, eliminating the need for spray programs.

Today, spongy moth outbreaks are cyclical, peaking approximately every seven to 10 years. In these years, the virus and the fungal disease are spread more easily through dense populations, eventually causing a crash.

Do these controls affect other species?

NPV and the fungal disease have important benefits – they are specific to spongy moth populations and do not affect people, pets or beneficial insects like pollinators or insect predators. In addition, they remain in the environment, continuing to help control spongy moth populations every year.

The spongy moth NPV pathogen (virus) is species-specific. It arrived with spongy moth and has driven population dynamics for over 150 years. In lab tests, the E. maimaiga fungus was able to infect a few other species, but this has not been observed outside the lab – the timing and behavior of spongy moth caterpillars result in fungal infection in spring. Native species either can’t be infected, are not present until later in the year or have other behavioral patterns that prevent them from becoming infected.

What about spray programs?

The State of Michigan does not have a statewide spray program. Spongy moth is a naturalized pest in Michigan now. However, a few areas have long-standing millages in place to help survey and spray residential areas when needed.

Outbreaks will continue to occur occasionally in local areas and, yes, every now and then we will have extensive outbreaks like the current one. While an outbreak is not pleasant for people in an affected area, it is rarely a problem for healthy trees and forests.

What can I do if spongy moth returns this year?

Two tan, fuzzy egg masses with small holes in them on a tree trunkFirst, check the spongy moth forecast for your neighborhood by looking for healthy egg masses now, before leaves expand. Healthy egg masses are larger than a quarter in size, tan or brownish in color and firm to the touch. Few egg masses and/or small (nickel-size) egg masses indicate the population is collapsing because the NPV pathogen is increasing. Old, no longer productive egg masses, like those in the above photo, are often abundant after an outbreak year and should not be counted. These masses are usually whiteish in color, may be falling apart and may have pin-size holes in the mass. An abundance of healthy egg masses suggests a heavy infestation of spongy moth caterpillars this season.

Before choosing a control method, remember that you will not be able to eliminate all the caterpillars – the goal is to reduce the density of caterpillars around your house.

  • Scraping: If healthy egg masses are found on trees, buildings or outdoor furniture around the home, act now, as egg masses can start hatching anytime! Use a scraper or hard, plastic card to scrape egg masses into a container of soapy water. Let them soak overnight, then bag and dispose of them. Alternately, egg masses can be placed in a fire and burned.
A person in a green and black jacket holds a flap of a piece of burlap wrapped and tied around a tree trunk

  • Banding: Cut a band of burlap 18 inches wide and long enough to go around the tree trunk and overlap a bit. Tie a string around the center of the band to make a two-layered skirt around the trunk. When caterpillars climb trees daily to feed, they will get caught in the band. Scrape them into a bucket of soapy water to kill them.
  • Spraying: To address an infestation in a handful of individual trees, homeowners can purchase a spray containing Bacillus thuringiensis var. kurstaki, a bacterium that naturally occurs in the soil but can be lethal to certain caterpillars and moths. The best time to spray is when caterpillars are small, usually mid-May through early June. Be sure to choose an Environmental Protection Agency-registered pesticide and apply it according to label directions. Remember, there is no good reason to spray woodlots or forested areas. Healthy trees and forests can withstand periodic infestations.

To learn more about spongy moth caterpillars and options for residents living in an outbreak area, visit the MSU IPM Gypsy Moth website. The bulletin Btk: One management option for Lymantria dispar offers detailed information about Btk management for spongy moth.

Check for upcoming NotMiSpecies webinars and watch past, recorded webinars – on everything from spongy moth to invasive carp – at Michigan.gov/Invasives.

Showcasing the DNR: One tree can make a difference

Showcasing the DNR: One tree can make a difference

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spruce grouse on a tree branch

One tree can make a difference

By RACHEL COALE
Forest Resources Division, Michigan Department of Natural Resources

Stubborn patches of lingering cold and snow across Michigan can’t stop the fact that spring is coming. Days are lengthening, migrating birds are returning from their tropical vacations, and perennial plants are gingerly peeking out of the softening soil as winter’s rigid frostiness melts away.

One of most satisfying ways to welcome the return of nature’s greenery, birdsong and blooms to the Midwest is to take part in the time-honored tradition of planting a tree around the Arbor Day holiday, which falls on April 29 this year.

Spring and fall are the best times of the year to plant trees, and there’s no time like the present to pick out a beautiful new tree at a local nursery, garden center, conservation district sale or landscaping supplier. Even if young trees just resemble sticks right now, they will soon put down roots, soak up sunshine and unfurl flowers and leaves.

Each tree is part of a statewide forest

man with baby in backpack carrier walks down wooden steps through forestMichigan’s 20 million acres of forests include about 100 native conifer and broadleaf tree varieties adapted to thrive in a variety of soils and climates. Learn about a few of them on the Michigan Department of Natural Resources’ growing tree species webpage.

Whether a tree grows on a sunny farm in the country, as part of a manicured suburban backyard or overlooking neon city lights from a pot on an urban balcony, it matters! Large or small, every tree provides an environmental benefit that improves the community it grows in.

Large expanses of state, national and private forests are important for many reasons. Older forests provide ideal habitat for deep-woods wildlife species like pine martens and spruce grouse. Younger forests are favored by woodland elk and wild turkeys. Dry, sandy jack pine forests that need fire to thrive are home to Kirtland’s warblers. Wetland forests, harboring cedar and willow trees that enjoy “wet feet,” are essential for waterfowl, fish and amphibians.

In addition to creating habitat, forests clean the water in lakes and streams, purify the air and provide renewable materials for products people use every day. Forests are also inspiring places for backcountry hiking, wildlife watching and exploring.

This doesn’t diminish the value of trees in urban settings – they’re critically important, too. Urban trees help bridge the gaps between larger expanses of natural areas. Each tree, shrub and native plant in a town or city is like a steppingstone for migrating songbirds, bees, butterflies and other wildlife as they flit and scurry about.

Trees in communities

view from the ground to the top of a large cedar treeTrees provide wildlife with places for nesting, food and shelter. They also provide benefits to the human communities where they grow.

Trees naturally perform a heavy lift that would be difficult and expensive to match by any human-made machine. They shade and cool cities from the sweltering effects of hot concrete and asphalt, soak up (through their roots) stormwater that can cause flooding and erosion, and boost air quality. For every 10% increase in urban tree canopy, lung-damaging ozone gas is reduced by 3% to 7%. Tree-lined streets have also been shown to reduce particles from car exhaust by as much as 60%.

Trees are also one of the easiest and most cost-effective ways to draw carbon dioxide out of the atmosphere. Michigan State University Extension reports that it takes about 1.5 pounds of carbon dioxide to grow a pound of wood in a tree. That carbon becomes part of the tree and eventually part of durable goods such as homes and furniture, made from sustainably harvested trees.

Need another reason to plant a tree? Mature, healthy trees can increase property values as much as 15%. Most people would agree that it’s way easier to plant a tree than start a kitchen remodeling project.

These benefits can be put into a tangible number using a tree value calculator such as My Tree from the USDA Forest Service. The My Tree calculator estimates a tree’s benefits in monetary terms from expected impacts on air pollution, carbon absorption and stormwater interception, among other categories.

For example, a 36-inch-diameter red maple in the Lansing area that receives full sun might bring a benefit equal to $330 in the next 20 years by absorbing about 13,500 pounds of carbon, intercepting nearly 30,000 gallons of rainfall and removing toxic gases like carbon monoxide, ozone and sulfur dioxide from the air we breathe. The value from the carbon the tree already had absorbed in its lifetime would equal nearly $900.

As exciting as it is to be able to put a tree’s value into monetary terms, the dollar doesn’t tell the whole story. It’s impossible to truly measure the joy a tree’s blooms can bring in the springtime after a long winter, or how special it is for a child to watch a family of robins hatch and fledge baby birds from a nest built in its branches.

Plant trees, grow community

three young girls kneel on the ground to plant a tree seedlingReady to plant a tree? The most important consideration is “right tree, right place.” Not all trees need the same conditions to thrive. Put simply, a horse and a hamster are both pets, but you wouldn’t feed or house them the same way. The same goes for trees! A towering white pine might be a great fit for a sunny, open space, while a small, flowering redbud might be better suited to an area with power lines or partial shade.

Some things to consider before getting your shovel ready are:

  • Growing zone.
  • Soil conditions and moisture at the site.
  • Wind and sun exposure.
  • Infrastructure (avoid pipes and power lines – call 811 before you dig to have lines marked for free).

Tree-planting resources from the Arbor Day Foundation, which celebrates a milestone 150 years of Arbor Day in 2022, will help people pick the right species for their area with tools such as species profiles and how-to sheets.

trees lined up during giveaway event at Outdoor Adventure CenterIn addition to providing tree-planting grants and technical support for communities, the DNR has pledged to plant 50 million trees in Michigan by 2030 as part of the global 1T.org Trillion Trees campaign. Want to lend hand? Let us know if you planted a tree, or trees, since 2021 by adding it to our interactive map. With each tree planted and logged, we’ll be able to see the canopy grow.

So celebrate Arbor Day – and springtime’s return – by planting a tree. It may seem like a small step, but it will make a big difference in your community, your state and the natural world around you.

Find more ideas about ways to mark the occasion, and more information about trees and tree planting, at ArborDay.org/Celebrate.

Check out previous Showcasing the DNR stories in our archive at Michigan.gov/DNRStories. To subscribe to upcoming Showcasing articles, sign up for free email delivery at Michigan.gov/DNR.


Note to editors: Contact: John Pepin, Showcasing the DNR series editor, 906-226-1352. Accompanying photos and a text-only version of this story are available below for download. Caption information follows. Credit Michigan Department of Natural Resources, unless otherwise noted.

Text-only version of this story.

Cedar: In addition to creating wildlife habitat, trees – like this cedar, near the Au Sable River in the northern Lower Peninsula – clean the water in lakes and streams, purify the air and provide renewable materials for products people use every day.

Fall: Michigan offers plenty of opportunities for popular outdoor pastimes like spotting fall foliage, with the state’s millions of acres of forests.

Giveaway: As part of a partnership with The Greening of Detroit and the Detroit Pistons, the Michigan Department of Natural Resources gave away 150 free trees – along with planting instructions and advice on picking the right tree for the planting location – during an event at the DNR Outdoor Adventure Center in Detroit in the fall of 2021.

Hike: Michigan’s forests are inspiring places for backcountry hiking, wildlife watching and exploring. Here, hikers enjoy an outing at Warren Woods State Park in Berrien County.

Planting: The Michigan Department of Natural Resources has pledged to plant 50 million trees in Michigan by 2030 as part of the global 1T.org Trillion Trees campaign. Here, elementary school students participate in a tree-planting day at the DNR Grouse Enhanced Management Site on Drummond Island in Chippewa County.

Sign: The Arbor Day Foundation celebrates a milestone 150 years of Arbor Day, which will be observed April 29 this year, in 2022.

Spruce grouse: Older forests provide ideal habitat for deep-woods wildlife species like pine martens and spruce grouse, pictured here.

Tree-NA: Michigan’s 20 million acres of forests include about 100 native conifer and broadleaf tree varieties. Learn about a few of them – like the eastern redbud, featured in this “Tree-NA” graphic – on the Michigan Department of Natural Resources website at Michigan.gov/DNR/Education.


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The Michigan Department of Natural Resources is committed to the conservation, protection, management, use and enjoyment of the state’s natural and cultural resources for current and future generations. For more information, go to Michigan.gov/DNR.