River Valley News - April 20, 2023

Fort Saskatchewan naturalists raise concern over vandalism to trails

Susan Gronau with the Fort Saskatchewan Naturalist Society says that unauthorized trails in Ross Creek and Turner Park have been meddling with the fragile ecosystem that exists in the area. "The creek is littered and plugged with chain sawed live trees and dead logs from the ground, small trees were cut down, bundled, and tossed to the side," said Gronau.

The damage that some of those trails can inflict on the environment can be more wide-reaching than you think. One of these trails goes right through a patch of Yellow Lady's Slipper, a rare plant in the area. Forest ecosystems are especially fragile once the snow melts, with many animals breeding and plants beginning to bloom.

Gronau mentioned that most of the unpaved trails in Fort Saskatchewan were created without permission of the city council, and she hopes that there will be more restrictions on the trails in the future. "For both Turner Park and Ross Creek, if there has to be a trail there, shut down all of them but one," said Gronau.

https://fortsaskonline.com/articles/fort-saskatchewan-naturalists-raise-concern-over-vandalism-to-trails?

What do wildlife do to stay cool in summer heat

Animals use various methods of evaporative cooling to regulate their body temperatures. Rabbits and foxes have thin skin paired with blood vessels near the surface in their large ears to help shed excess body heat. Bees carry water droplets back to their hives and fan them with their wings, effectively creating their own air conditioning.

Storks and vultures perform guttural fluttering, which is similar to panting, and defecate on their legs to stay cool. Like hibernation in cold weather, some snails, worms and small mammals will go into estivation in hot weather, hiding from the heat and saving their energy.

Ground squirrels and prairie dogs, take refuge underground on hot days. They will even build special tunnels for optimal airflow that aids in keeping their dens cool. Bushy-tailed animals, like tree squirrels, use their tails like an umbrella to create their own shade.

Unlike mammals, reptiles and amphibians are poikilotherms and use their environment to manipulate their body temperature. They will bask in the sun to warm up and will seek water, mud, or crevices when they need to cool down. https://www.ealt.ca/blog/fun-facts-keeping-cool-in-the-animal-kingdom

Eugenics and the Leilani Muir footbridge

The footbridge in the photo has been replaced by the Tawatinâ LRT Bridge. In 2011, the footbridge was informally named the Leilani Muir Foot Bridge in a Works Festival project. Small plaques were affixed to the railings and remained there until 2016.

Muir was born July 15, 1944 in Calgary. In 1955, Leilani’s mother admitted her to the Provincial Training School for Mental Defectives in Red Deer, later known as the Michener Center. A precondition was consent permitting sterilization, which Leilani’s mother gave.

In 1959, Leilani underwent a bilateral salpingectomy, cutting of the fallopian tubes. Leilani was told only that she was having her appendix removed. Leilani’s sterilization occurred under the premise of Alberta’s Sexual Sterilization Act. Leilani left the training school in 1965 to begin an independent life.

After learning about her sterilization through a medical test, Muir spent years trying to have the damage reversed. She hired two Edmonton lawyers, and in 1996 she became the first person to successfully sue the Alberta government for wrongful sterilization. She was awarded $740,780, plus $230,000 for legal costs.

In her decision, Justice Joanne B. Veit stated, “The circumstances of Ms. Muir’s sterilization were so high-handed and so contemptuous of the statutory authority…and…so little respected Ms. Muir’s human dignity that the community’s, and the court’s sense of decency is offended.”

Leilani’s case opened the door for similar class action lawsuits. By 1999, the province had paid $142 million in settlement costs to over 700 victims. Leilani Muir O’Malley died on March 14, 2016. The Sexual Sterilization Act was repealed in 1972 by Peter Lougheed’s provincial government. https://citymuseumedmonton.ca/2023/03/14/leilani-muir-and-eugenics-in-alberta/

Tree planting as climate action is no solution without animals

Wayne Lynch photo

Tree-planting, the main so-called nature-based solution intended to help draw down carbon dioxide from the atmosphere, has become a synonym for climate action. A recent paper published in Nature’s climate change journal says trees might not be able to do their carbon-uptake job efficiently without the right animals in their ecosystem.

That is because, in the words of the paper, animals “animate the carbon cycle” through their behavior and roles in the ecosystem. That goes far beyond forests. Take wildebeests. They turn the Serengeti into a carbon sink by grazing, which reduces wildfire risk. Their waste, which contains carbon from the vegetation, is then buried in the soil by insects.

In Canada’s tundra, herds of muskox compact the snow, which keeps the soil frozen, therefore reducing methane emissions and increasing albedo, or the ability to reflect sunlight, which cools the local environment.

It is frustrating that efforts to protect biodiversity and halt climate change are treated separately. The paper’s co-author says people should start thinking holistically. By expanding the dimensions of the problem, we can arrive at solutions that are beneficial for both biodiversity and climate. https://www.bloomberg.com/opinion/articles/2023-04-11/rewilding-nature-is-no-solution-if-all-you-ve-got-are-trees?leadSource=uverify%20wall

Kirsten writes “We enjoy the River Valley News. Always new stuff to learn and it helps us see the wonders right outside our door.”

Vaulted Willow by Marc Fornes & THEVERYMANY. Borden Park. Doyle C. Marko/DCM Photography. https://www.edmontonpublicart.ca/#!/details/141

Comment or contribution

Please note that articles may not reflect the position of NSRVCS. River Valley News is meant to be a clearinghouse for the wide variety of opinions and ideas about Edmonton’s River Valley. Email river valley photos, event information, comments, or questions to nsrivervalley@gmail.com

Sincerely yours,

Harvey Voogd

North Saskatchewan River Valley Conservation Society

780.691.1712

River Valley News - April 13, 2023

Woodland ants play a key role in forest regeneration

Aphaenogaster sp, or woodland ant, plays a beneficial role in new forest biodiversity as keystone dispersers of the seed of understory plants such as native wildflowers. Many plant species rely on a mutual relationship with ants to disperse their seeds.

These plants evolved with seeds that have an appendage rich in fats attached to them, and that is very attractive to woodland ants. Ants need fats just as much as protein and sugar, and it is hard to find foods rich in fats in the forest.

They take the seeds with fatty rewards back to their nests, protecting them from consumption by rodents and other organisms. Once the fatty appendages are consumed, the ants remove the seeds from the nest, dispersing them far from the original plant. It is a mutually beneficial arrangement.

Woodland ants are a native species that lives in logs, forest leaf litter and underneath rocks. They may not be as charismatic as butterflies or bees that help pollinate flowers, but they are just as important.

https://www.sciencedaily.com/releases/2023/02/230228113750.htm

Chives are a natural insect repellent

The Latin name for chives is Allium Schoenoprasum, which means “rush-like leek.” They are a member of the onion family, a native perennial, and have been cultivated for thousands of years for their culinary and medicinal uses.

The most used part of chives in cooking is the long, slender green stems. Its flowers are edible, great as a garnish or in salads, and have a more intense onion flavour than the stems. Traditional medicine uses chives to treat digestive problems, high blood pressure, colds and flu.

They are a favourite of bees and other pollinators and attract beneficial insects to the garden. Chives are also a natural insect repellent and can deter pests such as aphids, snails, slugs, mosquitoes and Japanese beetles. https://www.gardenia.net/plant/allium-schoenoprasum-chives

Can woodpeckers live peacefully in cities

Wildlife habitats become fragmented as forests are replaced by new construction in densely populated areas. This poses a threat to animals like the pileated woodpecker that rely on specific habitat conditions for their survival.

These birds prefer mature woodlands with dead timber, which provide a home for grubs and other preferred food sources. While pileated woodpeckers are currently considered a species of low conservation concern, their particular habitat needs render them vulnerable to human development. 

This bird’s population saw a huge decline in the late 18th & 19th centuries when a lot of forest was converted to agriculture. But when reforestation started, it recovered. But it is not just about planting more trees. The birds need mature forest, so it could take 30 to 50 years to replace their habitat.

Pileated woodpeckers create cavities in trees for their nests annually, generating valuable living spaces for other animals like fox squirrels and screech owls. They make new nests every year. They will not reuse old ones. Other animals depend on them. https://www.earth.com/news/can-woodpeckers-live-peacefully-in-cities/

Big Island Provincial Park

Kyle Schole photo taken July 11, 2022

Comment or contribution

Please note that articles may not reflect the position of NSRVCS. River Valley News is meant to be a clearinghouse for the wide variety of opinions and ideas about Edmonton’s River Valley. Email river valley photos, event information, comments, or questions to nsrivervalley@gmail.com

Sincerely yours,

Harvey Voogd

North Saskatchewan River Valley Conservation Society

780.691.1712

River Valley News - April 6, 2023

Land-based education takes root in Edmonton river valley

Over spring break, 10 children learned Cree, baked bannock, raced on snowshoes and followed animal tracks in the forest. Ranging from four to 10 years old, they are the first participants of the land-based education program Blossoming Flower.

Tiffany Smith, Blossoming Flower's education program director and co-founder, said the program builds relationships through understanding by learning about Indigenous language and culture and having people from Indigenous and non-Indigenous backgrounds come together.

Last week's activities took place in the newly opened Indigenous sacred space in Whitemud Park called kihcihkaw askî. Years ago, it was a place where Indigenous people collected ochre and precious medicines growing in the river valley.

In Cree, kihcihkaw askî means "this place here is sacred land." The project is a collaboration between Indigenous elders, communities, and the City of Edmonton. More at https://www.cbc.ca/news/canada/edmonton/blossoming-flower-yellowhead-indigenous-education-foundation-1.6798233

Beaverhill Lake snow goose festival returns April 22-23

The Snow Goose Festival, April 22 and 23, celebrates the spring migration of snow geese through Beaverhill Lake near Tofield. Everyone is welcome, from first-time to experienced birders, children and adults. You will experience the wonder of nature as thousands of migrating snow geese, Canada geese, various shorebirds, cranes and swans return to Beaverhill Lake on their migratory route to the north.

Several guided hiking and bus tours are scheduled each day. The free Trade Show in the Tofield Arena offers kids activities, concessions and displays. Free shuttle to the festival from Sherwood Park Bethel Transit Terminal. Hop aboard Strathcona County Transit to shuttle you directly to and from the Festival.

You can purchase tickets in advance as both days offer 2 hour and 3 hour bus tours, as well as 3 hour field hikes. There is also a Saturday evening banquet with speaker and silent auction. Details at 

https://www.eventbrite.ca/e/snow-goose-festival-celebration-of-spring-migration-at-beaverhill-lake-tickets-539771480027

Woodpeckers weird tongue and why they don’t get concussions

If a human tried head-butting a tree with the speed and power of a woodpecker, they'd quickly end up with a headache or worse. So why don't woodpeckers get concussions, or at least headaches, after bashing their beaks into wood up to 12,000 times a day? A small brain might be key. 

A recent study found the bird's beak, head and brain all stop simultaneously when it hits the target, exactly how a hammer works, but no evidence of shock absorption. Experts wonder if the bird's brain, which is about 700 times smaller than a human's, avoids injury simply because its size and weight can withstand the force. It turns out a woodpecker would have to hit a tree twice as fast as they do to give themselves a concussion. 

Woodpecker tongues are weirdly long, measuring up to a third of their total body length, but most of its tongue is hidden within its head. The base is anchored to the hyoid bone, which is in its nostrils. From the nostril, the tongue splits in two, wraps around the back of the skull and joins together again at the base of the beak.

When muscles contract the hyoid bone, the tongue sticks out. The tongue also helps the woodpecker avoid injury when chiseling at objects. The hyoid contracts and tenses at each bash of the beak, holding the skull and spine in place. More at https://www.cbc.ca/documentaries/the-nature-of-things/why-woodpeckers-don-t-get-concussions-a-really-weird-tongue-and-other-surprising-facts-about-these-birds-1.6795945

Agoseris Glauca, or false dandelion, attractive to birds and bees

This native perennial and other agoseris species are known as false dandelions. They are common in the prairie and open woods of western North America.

The flowers are 1-inch across and appear singly at the ends of long stems. The flower stems can grow more than 45cm tall. The flowers are pollinated by insects, and are especially attractive to birds, butterflies, and bees.

Plants have a milky sap and the stems are sparingly hairy. False dandelion reproduces from seeds which have the same appearance as common dandelion. False dandelion is usually found where soils are sandy or gravelly.

Indigenous peoples used the plant medicinally and ate the roots. Wild-edibles enthusiasts eat the greens raw or cooked, much as they would regular dandelions. More photos at https://www.saskwildflower.ca/nat_Agoseris-glauca.html

We Are Here by Mia Weinberg, Muttart Conservatory. Granite pyramid depicting imagery of plant structures and urban map systems. https://www.edmontonpublicart.ca/#!/details/13

Comment or contribution

Please note that articles may not reflect the position of NSRVCS. River Valley News is meant to be a clearinghouse for the wide variety of opinions and ideas about Edmonton’s River Valley. Email river valley photos, event information, comments, or questions to nsrivervalley@gmail.com

Sincerely yours,

Harvey Voogd

North Saskatchewan River Valley Conservation Society

780.691.1712