York County Coast Star, August 6, 2020
SPRINGVALE, Maine – For years, beaver dams have caused flooding after high watershed events along the Rail Trail abutting the wetlands of Deering Pond, but the installation of a new device on site is expected to help resolve the issue for decades to come.
Skip Lyle, the founder and owner of Beaver Deceiver International, traveled to the community on July 30 and worked with Kevin McKeon and Steve Mallon, both of the Sanford-Springvale Trails Committee, to install one of Lyle’s custom-designed flow-control devices at Deering Pond’s culverts within the Hall Environmental Reserve. Lyle, of Grafton, Vermont, is a conservationist, builder, biologist, inventor and entrepreneur.
“My goal is to protect any threatened property while at the same time maximizing ecological and hydrological value,” Lyle said.
The Rail Trail, a popular stretch of the community’s vast network of paths, has often flooded and washed away as a result of a culvert-clogging beaver dam that causes Deering Pond’s water level to rise after a storm or a spring runoff.
The Sanford-Springvale Mousam Way Land Trust, the Sanford Trails Committee, and the Sanford ATV Club joined forces to resolve this ongoing conflict between human and beaver, in a way that protects the environment of Deering Pond within the reserve and maintains the integrity of the Rail Trail.
According to McKeon, the three groups used to take a “caveman style” approach to the issue, occasionally sending members to the site to clean out the culverts – a task that needed to be done as often as two or three times a week during the high-water season of spring.
“A subcommittee was actually formed to rotate volunteers!” McKeon said.
Now, thanks to one of Lyle’s Beaver Deceivers, the issue has been resolved in a way that’s a win-win for humans and those busy little dam builders.
A typical Beaver Deceiver is “either a rectangular fence that protects the upstream opening of a culvert or a trapezoidal fence that is narrow at the culvert and widens upstream,” according to Lyle’s website. Each device is custom built to suit the site .
“It fools the beaver into thinking that they’re creating a dam to hold back the water,” McKeon explained. “But in reality, the water is going through.”
McKeon said beavers instinctively build dams wherever they hear or sense water flow.
“If they hear it, if they see it, if they feel it, they will try to stop it,” he said. “They can’t help themselves. It’s a natural thing that they do.”
Lyle said his devices are effective anywhere between 30 and 40 years and are a more practical, long-term and humane alternative to trapping and killing beavers.
Trapping in the area also is risky for the trappers themselves, McKeon noted.
“This is a peat bog,” he said. “Unless you know the area pretty well, you could be walking along the shore of Deering Pond and all of a sudden you could find yourself chest-deep in muck. It’s a pretty dangerous area for trappers to be trapping.”
The entire installation of the Beaver Deceiver cost about $2,900, according to Trails Committee Chair Lee Burnett. The committee will cover the expenses, with hopes of being reimbursed through the state’s Municipal ATV Grant program, Burnett said.
Mousam Way Land Trust funded a video production of the installation as part of the organization’s goal of increasing the awareness of how people exist within their environment, McKeon said. WSSRTV, the broadcast station out of Sanford High School and Regional Technical Center, produced the video and is currently editing it for availability soon.
McKeon said another culvert – which this time would be installed underneath the Rail Trail – is also a component of the overall solution recommended by Lyle. The Beaver Deceiver solves the flooding issue at the existing culvert, but not the one at the Rail Trail. Under certain circumstances, water washes over the Rail Trail when its level rises not just in Deering Pond but in its attached wetlands, as well.
“Currently, we didn’t know that that was going to be needed, and that is under discussion among the Trails Committee members,” McKeon said. “It’s a pretty inexpensive solution, even if it proves that it’s not really required. It’s a pretty good guarantee that the water wouldn’t go over the Rail Trail and erode it there. It would go underneath, through the culvert, to the ditch on the other side that carries water now.”
While the Beaver Deceiver addresses the negative issues related to the beavers and their dams, it also allows the animals’ work to continue. Lyle said he, McKeon and Mallon installed a “starter dam” at the Beaver Deceiver to encourage beavers to construct there to “build up the pond.”
Lyle and McKeon said this will help ensure the continuation of a healthy ecology at the site – a habitat for birds, critters, plants and more that are healthy for them and an attraction for those who enjoy nature.
About 370 million years ago, the first animals crawled out of the oceans to live on land. Known as amphibians (“two-lives”: amphi ‘both’ + bios ‘life’), they still require water for part of their life cycle. Beginning their life in water with gills and tails, they later develop lungs and legs for their life on land. They are also “cold-blooded” and assume a body temperature equal to their surrounding environment; warming themselves by basking in the sun and cooling down by lounging in a pool of water. Their thin, moist skin allows them to “breath” air and “drink” water, but also results in their drying out easily, so they don’t venture very far from a water source or damp environment, like Vernal Pools.
Vernal Pools are special bodies of water, having no inlet or outlet, and are unable to sustain some aquatic predators, such as fish and some invertebrates. They are also readily found throughout the landscape; anywhere a depression exists, a pool of water likely forms for a short period. These pools can also be a variety of sizes; be it as large as a permanent wetland and several feet deep, or only a few square meters with inches of water, it seems nearly any pool size will suffice a breeding amphibian. (Click here for more info on Vernal Pools.).
Certain early-spring conditions trigger a massive migration, when our ancient amphibians travel from their woodsy homes to Vernal Pools to breed. When the snow melts and the ground thaws, and temperatures rise above 45°, on a very wet night—either rainy or very foggy—“The Big Night” event happens. This event sometimes happens during a single night, but often over several nights. Vernal Pools become swelled with the snow-melt and wet weather, and our amorous crawlers are answering the call to procreate!
Their travels back to their breeding waters often require them to cross roads, and upwards of 30% of our frog, toad and salamander friends are killed by human road traffic…each time they cross the road. And they need to cross twice: once to get to the pools and once to return to their woodsy homes. Of the near 8,000 described amphibian species, almost half are in decline. According to a recent International Union for Conservation of Nature (IUCN) Red List report, over a quarter of amphibians are currently at risk of extinction, making them one of the most threatened groups of animals on the planet.
Hope does exist, however. A small yet fast-growing movement involves citizens throughout the northeastern US who have been taking notice of the challenges migrating amphibians face as they attempt road crossing. “The Big Night” project focuses on recruiting volunteers to go out into the warm rainy nights of spring to monitor key migration points on roads. Not only are volunteers assisting amphibians in crossing roads, they are also collecting valuable data that could help to both detect critical crossing points and increase habitat connectivity areas.
While driving along roads, many of us are accustomed to swerving around those amphibians that we can see, and also help them cross when we stop. The Maine Department of Transportation (MDOT) has noticed the dangers motorists thus create; single and multiple road accidents are being tabulated along with road damage. The evidence shows that as folks instinctively try to avoid needlessly killing these creatures, the costs of accident responses and road repairs are mounting. So MDOT is partnering with The Big Night project, Maine Department of Inland Fisheries and Wildlife, and other parties to design and build amphibian crossings into new road construction projects as a known cost-saving actions.
Walk along a woodland stream and the occasional sight of a glob of foamy stuff comes into view. So where does this sudsy-looking stuff come from?
Stream foam is most common during periods of heavy rain and snow melt. Surface water mixes with topsoil rich in organic matter like leaves and twigs. The organic matter contains naturally-occurring chemicals called “surfactants”: materials that reduce surface tension in water. The surfactants become mixed with the water runoff much like the flavor of tea leaves become infused into the water in your teacup. Surfactants act to make water easier to spread or “more wet”. Soap is the most common surfactant we use, acting to ease cleaning operations; it allows water to “stretch”…and to form bubbles.
As the stream’s water flows over branches and rocks it becomes oxygenated, a major source of atmospheric oxygen mixing into our global waters feeding fish. Bubbles are formed and, due to the decreased surface tension from the surfactants, these bubbles become persistent and are somewhat stabilized. The bubbles congregate in areas of the stream called eddies—where the shape of rocks, branches, and other stream structors cause a circular flow of water to persist in a given spot.
There are, however, some materials like detergents and yes, soaps, that can also cause foam, but these foamy areas will usually be found near houses or drainages areas from parking lots. So if you’re out in the woods and are so inclined, scoop up some stream foam and give it a smell test! It may have an earthy, fresh-cut grass or fishy scent.
There’s another naturally-occurring foam caused by something different. Found along shorelines and beaches, “foam-lines” are caused by the seawater mixing with decaying matter from certain microscopic creatures called algae. Some of this algae can be harmful and the release of air from the collapsing bubbles from these algae can cause eye irritation and breathing difficulties to those with asthma and respiratory issues. Some sea birds can become affected by the damage to waterproofing oils on their feathers, making flight more difficult and compromising survival.
SPECIAL COVID-19 HEALTH & SAFETY RULES
Sanford Community Garden will open this season on April 22, Earth Day. Please read the following interim rules regarding COVID-19 safety. As things progress, the following restrictions will be revisited and modified to ensure health and safety. These are unprecedented conditions and will eventually ease.
Please note that the above rules supersede the usual rules; other portions of the usual rules are still in effect. As we all have learned, it is imperative that we all remain at the advised 6 foot minimum distance from each other. The best and only current COVID-19 vaccine is “ Social Distancing”.
Thank You all for understanding these conditions.
Happy & SAFE Gardening!
Sanford Community Garden Hosted by Sanford/Springvale Mousam Way Land Trust; Managed by University of Maine Extension Service’s York County Master Gardener Volunteers
After an absence of several years, Sanford has a community garden where folks can grow their own organic vegetables, flowers, and herbs. The Sanford Community Garden is located at the Pence Community Ecology Center in the McKeon Environmental Reserve on Blanchard Road in Springvale. Last May, the garden was created by applicants, Master Gardener Volunteers, Land Trust members, and others. Access road and parking lot improvements, and a tool shed followed.
The tool shed will serve as a communications center. Notices will be posted, along with the garden guidelines, and lists of approved organic soil amendments, pesticides, and herbicides. Master Gardener Volunteer contact for help with any problems and questions you may have, and a message board will also be there.
You’ll be encouraged to use the square foot gardening procedure developed by Mel Bartholomew as a means of getting the most out of a limited space, but you can use whatever layout you want. By the same token, certain species and varieties will be recommended based on experience. Again, you may choose your own. In any case, the point you should keep in mind is that the size of the bed places a limit on how many types of plants you can grow.
Each selected applicant will have a four-foot by twelve-foot, 10 inch high raised bed filled with blended topsoil amended with compost. Two plots will be reserved for home school students and their families. Three other plots are for local food pantry donations and Community Gardeners are asked to help with tending these.
Selected applicants will be assigned plots on a first-come, first-served basis, and will be expected to volunteer at least three hours of caring for the food pantry plot during the growing season; this is a requirement for having a plot in the garden another year.
Gardening tools, water, and a first aid kit will be available for gardeners to use. Master Gardeners will provide advice and help, if needed. They will also oversee the garden beds and the food pantry plot. An ADA-accessible outdoor restroom is on site.
Applicants, Master Gardeners, and land trust members plan to gather prior to the growing season to go over guidelines, review some of the techniques of square-foot gardening, and answer any questions folks might have about the garden or gardening. This meeting will be announced in March.
Using a plot at the Sanford Community Garden is a privilege; the Advisory Committee reserves the right to revoke the privilege of any gardener at any time for any reason it deems appropriate. To be considered for a raised bed, complete and submit the “Application For Community Garden Plot”. Also, copy and print the Waiver and Contract. After reading, understanding, and signing it, send it via email. You can alternatively send it via Post Office mail to: Kev & Patty McKeon, 246 Blanchard Rd., Springvale, Me. 04083.
General Contact and Master Gardener Volunteer help/advice:
Kev: 207-206-5934; Patty: 207-206-5933; firstname.lastname@example.org
Facebook Community Page: https://www.facebook.com/groups/1192392210830993/
Application For Community Garden Plot
SANFORD SPRINGVALE MOUSAM WAY LAND TRUST Waiver and Contract
Sanford Community Garden:
I agree to waive, release and hold harmless the Sanford Springvale Mousam Way Land Trust, York County Cooperative Extension, and Master Gardeners from any and all damages, claims, suits or injuries. By using the Sanford Community Garden located at Blanchard Road in Springvale, I assume responsibility for all risks, damages to self or personal property and hazards, including any third parties or children I may bring onto said property, for the purpose of gardening or otherwise. Insurance coverage is my own responsibility. I agree to act in a safe, sensible and responsible manner and will use respect with property and other people while at the garden. I also understand and agree to follow the general policies of the garden.
I agree on my behalf and my minor children to be photographed while in the garden area and grant permission to use the photograph/s for publication, promotion or news purposes and waive any rights I/we or they may have to compensation for or ownership of the photograph/s.
Signing below signifies that I have read, understand and agree to these waivers and policies.
By Sara Spary, CNN
January 16, 2020
An ancient grove of pine trees whose ancestors are thought to have stood tall among dinosaurs some 200 million years ago has been saved from Australian bushfires in a covert firefighting mission.
Firefighters in New South Wales (NSW) were enlisted by the local government to save the prehistoric Wollemi Pine grove, which exists in a secret location within the 5,000-square-kilometer (1,930-square-mile) Wollemi National Park northwest of Sydney.
There are fewer than 200 Wollemi Pines left in the wild.
The oldest fossil of the rare pine species dates back 90 million years and the pines are thought to have existed during the Jurassic period.
Large air tankers of fire retardant were dropped inside the remote grove as part of the mission, while specialist firefighters attached to helicopters were winched down to set up an irrigation system to protect the trees from catching alight.
Swathes of the Wollemi National Park have been affected by the devastating bushfires and some of the precious pine trees have been charred.
“Wollemi National Park is the only place in the world where these trees are found in the wild and, with less than 200 left, we knew we needed to do everything we could to save them,” Matt Kean, the NSW environment minister, said in a statement.
“The pines, which prior to 1994 were thought to be extinct and whose location is kept secret to prevent contamination, benefited from an unprecedented environmental protection mission,” he added.
The NSW government had carried out a detailed scientific assessment and, while some trees have been damaged, the species has survived, he said.
On a warm and foggy late October morning, “Lowes Heros” volunteer employees from Sanford Lowes gathered to help a local community’s non-profit organization, as they do every year. This year’s help was the building of a tool shed for Sanford Community Garden. The “Heros” brought the necessary materials with them, and along with help from Sanford Springvale Mousam Way Land Trust managed to frame up and side the shed, located inside the fenced-in garden area.
More Heros came back later to raise the roof. Sanford Community Garden is part of the Pence Ecology Center, located on the Trust’s 110 acre McKeon Environmental Reserve in Springvale. This shed will be put to good use housing the various garden tools and soil amendments for these organically gardened raised beds, described here: https://mousamwaylandtrust.org/2019/03/07/sanford-community-garden/
Greenland ice is actually building. Although this seems improbable due to Earth’s increasing temperature, it’s true…AND…it’s increasing sea water level rise!!
Glaciers form where snow accumulates and, under pressure from the weight of more accumulating snow, forms ice. This usually happens on large, depression-shaped landforms (similar to those which hold lake water) which allow snow to collect and compress under its own weight. This creates granular ice, also called névé. (We see this stuff in early spring, as the surface snow melts.). Further snowfall adds weight, crushing the snow/névé layers to create “firn”, as more air is squeezed out. At about 10% air, glacial ice is formed.
…with fewer air bubbles held within the ice, light is less scattered and able to penetrate more deeply into the ice. This effectively absorbs the red and yellow light, and reflects back the blue; hence the “Blue Ice” of the very dense glacial ice.
Anyway, the ice being formed is not glacial ice; it’s ice slabs, being formed very close to the glaciers surface, above layers of ice crystals called “névé”, or “firn”. The warming temperatures of Earth are melting the snow that falls on the glaciers more quickly than the névé layers of ice crystals below this snowmelt would normally absorb. As the snowmelt sinks into the névé layers, it freezes the layers together, forming a layer of ice on top of the spongy névé layers, effectively damming the snowmelt flow. This causes the water to flow downhill into the ocean instead of becoming an additional layer of névé which would have eventually added to the glacial ice mass.
There’s a short video here explaining this action.
“Blue Carbon” is the scientifically recognized term defining carbon stored by coastal ecological systems. These systems of seagrasses, mangroves, salt marshes, and seaweed, cover less than 0.5% of the seabed, are equal in size to about 0.05% of the biomass on land, and are responsible for over 50% of all carbon storage in ocean sediment. Through photosynthesis, carbon is captured in the plants and roots as the plants grow, ending up in the sediment where the carbon is stored (sequestered) for up to millions of years. One acre of seagrass can remove the carbon emitted from 4,000 miles of car exhaust each year.
There are about 72 species of flowering plants collectively called seagrasses that evolved from sea algae, moved onto land, and then, about 100 million years ago, transitioned back to the sea. Forming beautiful water-based meadows along coastal floodplains and in water up to 150’ deep, seagrass is a critical food source and habitat for wildlife, supporting a diverse community of fish, snails, sea turtles, crabs, shrimp, oysters, clams, squid, sea urchins, sponges, and anemones.
Seagrasses have been called “the lungs of the sea”, capturing and storing large amounts of carbon and releasing oxygen into the water as they build their leaves and roots through the process of photosynthesis—similar to how trees take carbon from the air to build their trunks. As parts of the seagrass die and decay, it collects on the seafloor and becomes buried and trapped in the sediment. The sediment forms sedimentary rock under the effects of time and pressure, and through actions of Earth’s tectonic plates, becomes buried in the upper crust; the carbon is thus effectively sequestered for decades and up to millions of years, resurfacing as volcanic spew (lava) and mountain outcrop eruption (magma).
But Blue Carbon ecosystems are being lost by 2-7%/year—a higher rate than even the rainforests. This loss adds to deadly atmospheric carbon by removing seagrasses’ carbon sequestration actions, and also reduces habitat that is vital for managing the health and viabilities of our climate, our coasts, our health, and a multitude of plants & animals.
Seagrass habitats are threatened by many anthropogenic (human) activities. Paved surfaces cause heavy runoffs of dirty, unfiltered water from storms and waste-waters. Increased fertilizer use from farms and housing developments, nitrous oxides from various fossil fuel burning activities—auto, factory, electricity generation, home heating—all cause excess nutrient accumulations flowing to the seas. These activities encourage algae blooms like red tide which deplete oxygen, cloud the sunlight, increase the water’s temperature, and release deadly toxins which kill animals, people, and the seagrass meadow.
Dragging weighted fishing nets over the meadows uproot the plants. Global Warming causes sea levels to rise and ocean acidification, reducing light infiltration, hindering photosynthesis thus causing a decrease in plant growth, health, and plant biodiversity. ( A “wasting disease” in the early 1930’s caused a large die-off of up to 90 percent of a seagrass species called eelgrass growing in temperate North America, causing an extinction of a snail species. ).
Another cause of seagrass depletion is the reduction of predatory actions upon the herbivore community, allowing these grass-eating animals unfettered access to seagrasses. This situation is mostly caused by over-fishing of the herbivore-eaters. For example, Chesapeake Bay Blue Crabs eat grazing snails. Over-harvesting the crabs allows the snails to flourish, destroying the seagrasses.
Seagrass loss has accelerated over the past few decades, from 0.9% per year prior to 1940 to 7% per year in 1990, with about a 1/3 global loss since WWII. An increase in awareness and protections are required to eliminate these losses and to ensure the health and survival of not only these magnificent habitats, but of us too.
A global assessment, done by the National Academy of Sciences, involving 215 studies found that seagrass habitat has been disappearing at an increasing rate since 1940; 29% has disappeared since seagrass data began in 1879, with 25-50% in the past 55 years. Seagrass loss rates are comparable to those reported for mangroves and coral reefs, and place seagrass meadows among the most threatened ecosystems on earth.
So, vegetative coastal ecological systems are emerging as the most carbon-rich ecosystems in the world, and one of the most effective methods for long-term carbon storage: they bury carbon 35 times faster than tropical forests and contribute 50% of the total carbon buried in ocean sediments. Because of their remarkable speed and effectiveness to sequester carbon for millions of years, Blue Carbon storage should be a key strategy to combat Global Warming.
https://www.thebluecarboninitiative.org/library#Mangroves; https://www.pnas.org/content/106/30/12377; https://mousamwaylandtrustmaine.files.wordpress.com/2019/12/44722-atwood-et-al.-2015.pdf; https://www.fws.gov/verobeach/MSRPPDFs/Seagrass.pdf; https://ocean.si.edu/ocean-life/plants-algae/seagrass-and-seagrass-beds#element_37; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4633871/