Wild About Utah

November 30, 2015January 24, 2021

A Safari through Utah’s Ice Age

Click to view larger image of a ground sloth of the Pleistocene, Photo Courtesy Paramylodon harlani, Texas Memorial Museum, University of Texas at Austin. Via Wikimedia,as licensed through Creative Commons Attribution-Share Alike 3.0 Unported — Wave-cut platforms from
Lake Bonneville preserved on
Antelope Island, Great Salt Lake, Utah.
Photo Courtesy Wikimedia, Mark A. Wilson (Department of Geology, The College of Wooster), Photographer

Ground sloth of the Pleistocene
*Paramylodon harlani*
Texas Memorial Museum
University of Texas at Austin.
Photo Courtesy Wikimedia
Licensed CCA Share Alike 3.0 Unported

Lake Bonneville compared to the
State of Utah.
Photo Courtesy https://wildlife.utah.gov/gsl/history/

Hi, I’m Ru Mahoney with Stokes Nature Center in Logan Canyon. As winter approaches I find myself anticipating the first really good snow, when our valley floors and mountain passes will be transformed overnight, relinquishing autumn’s riot of color for a glacial monochrome. As little as 12,000 years ago winter white was Utah’s perennial favorite, donned at the launch of the Pleistocene Epoch, a roughly 2 million year long period (give or take 10,000 years) marked by widely recurring glaciations.

The west has a reputation for being vast, but Ice Age Utah was even bigger. The mountains where higher and sharper. And the Great Salt Lake was submerged beneath the glacial waters of Lake Bonneville. At its largest, this massive body of water covered 20,000 square miles and was more than 980 feet deep. To put that into perspective, that measures about 9.5 million football fields wide by 4.5 Salt Lake Temples deep. And the Ice Age wildlife? Well it was much more akin to an African safari than anything you’re likely to find on your favorite shoreline trail these days.

The megafauna of Pleistocene Utah included a menagerie of beasts that are the stuff of legend. Familiar species like bison and big-horn sheep grazed among herds of mammoths and mastodons. Camels and horses – destined for extinction in North America – were the prehistoric prey of dire wolves and saber-toothed cats. Giant ground sloths the size of modern day elephants stood on two powerful hind legs to browse on shoreline foliage. And herds of muskoxen kept a wary eye on Arctodus, the Short-faced bear, a formidable predator more than 50% larger than any bear species living today.

The last 30,000 years of Utah’s Ice Age were characterized by increasingly volatile shifts in climate. The changing norms in temperature and abundance of liquid water created cyclical periods of transitioning habitat. Forests and forest dwellers gave way to deserts and their specialist species, before shifting back to forests again, all in mere millennia. While nomadic and highly adaptable species like muskoxen eventually moved north to more stable climates, the less adaptable fauna of the Ice Age were increasingly relegated to sharing shoreline habitat diminished by the swollen banks of Lake Bonneville.

As fluctuating glaciers pushed southward and then retreated, canyons like Big and Little Cottonwood were gouged into existence. Spring and summer glacier melt carried an abundance of freshwater into the lake, sometimes sweeping along with it the remains of prehistoric animals that had not lasted through the winter, laying them to rest in shoreline deltas where their fossilized remains are now uncovered and studied in alluvial sediment. For many of Utah’s Ice Age animals, the end of the Pleistocene brought extinction.

Today the ancient shoreline of Lake Bonneville is one of the most distinguishable geological features along the Wasatch front. This “bench”, as it’s now commonly known, is easily identifiable in cities all along the Wasatch and frequently boasts fine homes and even finer views. Which might go to show that lakeside property retains its value whether the lake is still there or not. So as you enjoy a winter hike or cross country ski along a shoreline trail this season, think about Utah’s last Ice Age and how our rich fossil record, with some of earth’s largest land mammals, paints a picture of an even wilder west.

For Wild About Utah and Stokes Nature Center, I’m Ru Mahoney.

A Safari through Utah’s Ice Age-Credits:
Image1: Courtesy Wikimedia, Mark A. Wilson (Department of Geology, The College of Wooster), Photographer
Image2: Courtesy Wikimedia,as licensed through Creative Commons Attribution-Share Alike 3.0 Unported
Image3: Courtesy https://wildlife.utah.gov/gsl/history/
Text: Ru Mahoney, Stokes Nature Center in Logan Canyon.

A Safari through Utah’s Ice Age-Additional Reading:
https://geology.utah.gov/popular/general-geology/ice-age/ice-age-animals-of-utah/

https://serc.carleton.edu/vignettes/collection/37942.html

https://hugefloods.com/Bonneville.html

https://geology.utah.gov/surveynotes/archives/snt42-3.pdf

https://geology.utah.gov/surveynotes/articles/pdf/pleistocene_fossils_42-3.pdf

November 23, 2015April 30, 2016

Three-Leaf Sumac (Rhus trilobata)

Many think of the desert as a hot, dry, barren, and unforgiving place. However, Utah’s deserts are chock full of interesting and diverse plants and animals! One such plant, which grows throughout much of Utah, is rhus trilobata or three-leaf sumac.

Three-leaf sumac is a widespread deciduous shrub in the Rhus genus, meaning “with three leaflets,” or “trifoliate leaves.” Others in this genus include Rhus aromoatica and the infamous western poison oak. The leaves of this shrubby-type plant are toothed, feel stiff and they give off quite a strong scent when crushed. The strong smell of crushed three-leaf sumac leaves has earned it the nickname “skunkbush” as well as “ill-scented sumac.”

Three-leaf sumac is a low spreading, many-branched deciduous shrub, usually no more than 3 feet high but spreading as much as 8 feet wide. The small, trifoliate leaves and the branches are fuzzy. Given its many branches, three-leaf sumac provides both nesting material and structure for native bees. Flowers are yellowish and found in clustered spikes. They are followed by bright crimson to reddish, sticky berries. The fall foliage adds an extra pop of color to the landscape.

Historically, three-leaf sumac has been used for medicinal and other purposes. The bark can be chewed or brewed into a drink for cold symptoms. Flexible branches were traditionally used for twisting into basketry and rugs. In fact, three-leaf sumac was a close contender to willow in desirability for basket-making. This common use of the plant earned it another nickname of “basketbush.”

My favorite part of three-leaf sumac, however, are the slightly hairy and sticky berries. Although historically eaten for gastrointestinal pain and toothache, the berries have a delicious sour flavor and can be eaten plain or used in oatmeal, ice cream, steeped in tea, or soaked in cold water to make a beverage similar to lemonade. These berries are high in vitamin C and have earned three-leaf sumac the additional nicknames of “sourberry” “lemonade bush” and “lemonade berry.” Other nicknames for this multi-purpose plant include squawbush, desert sumac, or scented sumac.

Regardless of which nickname you choose for three-leaf sumac, give the berries a try and see for yourself what you think! Be sure, however, that you properly identify the plant to avoid potential illness that can be caused by misidentification! One great resource that can help is the field guide “Rocky Mountain States: Wild Berries & Fruits.”

For Utah State University Extension Sustainability, this is Roslynn Brain.

Credits:
Images: Courtesy Hansen’s Northwest Native Plant Database, nwplants.com, https://www.nwplants.com/business/catalog/rhu_tri.html,
Creative Commons Attribution-ShareAlike 3.0 Unported License
Text: Roslynn Brain, Utah State University Extension Sustainability

Additional Reading:

https://www.plantsofthesouthwest.com/Three-Leaf-Sumacbri-Rhus-trilobata/productinfo/S2770/

November 9, 2015August 23, 2023

Seasonal Changes and Amazing Adaptations

Biking daily from Smithfield Canyon to USU campus, combined with an early am run, I’m well aware of the drop in temperatures, as are those of us who find themselves outdoors on a more permanent schedule. I’m speaking of our relatives who reside in the wild- birds, trees, raccoons, and such.

While I put on an extra layer or two, plants and animals have far more sophisticated adaptations from behavioral to physiological to structural.

We are all aware of the marvelous migration and hibernation behaviors, so let’s add a few more amazing adaptations to the list.

I’ll begin with a bird that is very common at our winter feeder- the Dark-eyed Junco. which responds to the first shortening days of summer with a series of physical changes: its reproductive organs become inactive and shrink in size, hormones stimulate the rapid growth of a new set of feathers, and fat deposits develop to provide fuel for the long migratory flight ahead.

Thus the preparation for migration starts as soon as the days begin to shorten. And the process must operate in reverse when the bird is in its winter habitat in the United States. As soon as days begin to lengthen, the Dark-eyed Junco must gear up physically for the flight north and breeding season. If it fails to do so, it likely won’t survive a long-distance migration. So the cycle of life and its related migrations and transitions are deeply connected to the heavens.

Plants are no less amazing. Those in temperate zones must also set their calendars accurately in order to flower and, for deciduous species, develop and drop leaves at the optimal time. Plants set their internal calendars using several attributes from the sunlight they receive. In fact, the angle of the sun may be more important to a plant than day length.

That’s because plant cells produce compounds called phytochromes in response to different portions of the light spectrum. Direct sunlight is higher in red light, while indirect sunlight contains more far-red light. During late fall and early winter, when the sun remains low in the southern sky, the indirect light produces an increase in far-red phytochromes.

As spring approaches and the arc of the sun rises in the sky, direct sunlight triggers the production of red phytochromes. The ratio of these two compounds mediates the hormones involved in flowering, leaf drop, and bud development. Even seeds below the soil are affected. The amount of red and far-red light that penetrate the soil is sufficient to govern germination.

Some behavioral alterations worth mention beyond migrating and hibernation are herding and flocking, huddling to share body warmth, dietary change, hair & feather change- both color and structure, and many more but my radio time is ending, so now it’s your turn to explore more! It really does make you appreciated the wonders of nature.

This is Jack Greene for Wild About Utah.

Credits:
Image: Courtesy and copyright 2008 Ryan P. O’Donnell
Text: Jack Greene, Bridgerland Audubon Society

Additional Reading:

Dark-eyed Junco, Junco hyemalis, Aynsley Carroll, Animal Diversity Web, https://animaldiversity.org/accounts/Junco_hyemalis/

Dark-eyed Junco, Junco hyemalis, Aynsley Carroll, Boreal Songbird Initiative, https://www.borealbirds.org/bird/dark-eyed-junco

https://scholar.google.com/scholar?q=junco+winter+reproductive+cycles

Jigang Lia, Gang Lib, Haiyang Wangb, and Xing Wang Denga, Phytochrome Signaling Mechanisms, The Arabidopsis Book, American Society of Plant Biologists, 2011, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3268501/ pdf

November 2, 2015July 18, 2020

An Arizona Road Trip Back Into the Past

Montezuma Castle, Courtesy US NPS — Montezuma Castle
Courtesy US NPS

Location of Hubbell Trading Post NHS in the Southern Colorado Plateau Network
https://science.nature.nps.gov/im/units/scpn/parks/hutr.cfm/[Nov 2, 2015]
Courtesy US NPS

Hubbell Trading Post Interior
Courtesy US NPS

Location of Hubbell Trading Post NHS in the Southern Colorado Plateau Network, Courtesy US NPS — Montezuma Castle
Courtesy US NPS

Location of Hubbell Trading Post NHS in the Southern Colorado Plateau Network
https://science.nature.nps.gov/im/units/scpn/parks/hutr.cfm/[Nov 2, 2015]
Courtesy US NPS

Hubbell Trading Post Interior
Courtesy US NPS

Arizona is rich in history — from the 1800s all the way back to the Late Triassic Period. You can stitch together a road trip that winds out of Flagstaff to Montezuma Castle National Monument, to Petrified Forest National Park, and ends at Hubbell Trading Post National Historic Site. Along the way you’ll experience fascinating chapters of geologic and cultural history.

At Montezuma Castle, 45 minutes south of Flagstaff and just off Interstate 17 (Exit 289), a short walk places you in front of a 5-story-tall cliff dwelling that offered safety from invaders: it stands 100 feet above the valley floor, nestled into an alcove.

The site was misnamed Montezuma Castle in the late 1800s by whites who thought the structure had been built by the Aztec people. The original owners, members of the Southern Sinagua (seen aug wah) people, called this area home from roughly 1100-1425 A.D.

Stroll the short trail that loops around a vegetated landscape below the “castle,” and you’ll find great views as well of the remains of Castle A. That dwelling once rose 60 feet and was home to about 100 residents.

From Montezuma’s Castle, it’s 95 miles via Arizona 87 to Winslow, and then 34 miles east on Interstate 40 to Holbrook. Finally, another 19 miles southeast on Arizona 180 leads you into Petrified Forest National Park and its unusual landscape.

There’s no lodging within the park, and you have to leave by sundown, so you will need to make some tough decisions if you have just one day. Do you take time to tour the Rainbow Forest Museum with its dinosaur displays, or hike out to Agate House?

A building built of petrified wood is pretty cool, so stretch your legs with a walk to the house. Then head north and deeper into the park to the Crystal Forest Trail. Wander this path and you’ll find yourself surrounded by petrified wood with its hues of yellow, red, and green, black and white.

Blue Mesa is another great stop. There’s a trail that takes you down into another colorful landscape of badlands and chunks, logs, and even slabs of petrified wood in shades of red, blue, yellow and black.

The northern end of the park road is anchored by the Painted Desert, a great place for sunset photos. Here you’ll also see the Painted Desert Inn, which some day could put the Park Service back into the lodging business but today is just a museum piece.

Back on Interstate 40, drive 22 miles east to Chambers, and then north on U.S. 191 for about 38 miles to Ganado and Hubbell Trading Post. This authentic trading post was opened by John Lorenzo Hubbell in 1878 on the Navajo Reservation.

Although it was added to the National Park System in 1967, Hubbell is not a museum piece but an active trading post. As such, it still holds richly woven Navajo rugs, jewelry, and other Native American artworks for purchase.

Schedule your visit to Hubbell Trading Post for May and you just might be able to attend the annual Native American Art Auction. Check with the park (928-755-3475) for the exact date.

If you have a little more free time, you could extend your your trip by heading 39 miles north on 191 to Canyon de Chelly National Monument.

For Wild About Utah and National Parks Traveler, I’m Kurt Repanshek.

Credits:
Image: Courtesy and Copyright Kurt Repanshek, www.nationalparkstraveler.com
Text: Kurt Repanshek, NationalParksTraveler.com.

Additional Reading:

Montezuma Castle National Monument, NationalParksTraveler.com, https://www.nationalparkstraveler.com/2012/03/visiting-montezuma-castle-national-monument-arizona9636

Montezuma Castle National Monument, US National Park Service, https://www.nps.gov/moca/index.htm

Geographic Area covered by the State of Deseret and Utah Territory, International Society Daughters of Utah Pioneers, https://www.dupinternational.org/dyn_page.php?pageID=54