Ron Meador: Minnesota Buffer Map→

MinnPost:

“Apart from its importance as a reference tool for landowners and regulators, the map of Minnesota watercourses requiring protective buffers creates a fascinating new view of the state and its distinguishing natural resource.

An exercise in high-resolution and highly interactive cartography, the map and online viewer published a couple of weeks ago by the Minnesota Department of Natural Resources merges data from detailed paper maps and modern satellite imaging.

It enables a close-up look at all of the state’s lakes and streams, shown in blue in the section above, and also its public ditches, rendered in green. (The red squiggles indicate locations earmarked for ground-truthing.) You can choose to view them laid over satellite imagery of the surface, a road layout or a minimalist gray base map.”

Andy McGlashen: Uninformed or the Serious Misinformed Use Lead Ammo→

ENSIA:

“Lead poisoning causes brain damage and, in humans, is thought to be linked with lower IQ, poor school performance and violent behavior. Even the ancient Romans knew lead could cause cognitive damage and death.

“Indeed, we know more about the toxicity of lead than we do about almost any other contaminant,” says Myra Finkelstein, an environmental toxicologist at the University of California, Santa Cruz who studies lead’s effects on wildlife.

Finkelstein was among 30 scientists who signed a 2013 consensus statement citing “the overwhelming scientific evidence of the toxic effects of lead on human and wildlife health” and calling for “reducing and eventually eliminating the introduction of lead into the environment from lead-based ammunition.””

Philip Warburg: Floating Solar→

Yale Environment 360:

“Floating solar panel arrays are increasingly being deployed in places as diverse as Brazil and Japan. One prime spot for these “floatovoltaic” projects could be the sunbaked U.S. Southwest, where they could produce clean energy and prevent evaporation in major man-made reservoirs.

The Colorado River’s two great reservoirs, Lake Mead and Lake Powell, are in retreat. Multi-year droughts and chronic overuse have taken their toll, to be sure, but vast quantities of water are also lost to evaporation. What if the same scorching sun that causes so much of this water loss were harnessed for electric power?

Installing floating solar photovoltaic arrays, sometimes called “floatovoltaics,” on a portion of these two reservoirs in the southwestern United States could produce clean, renewable energy while shielding significant expanses of water from the hot desert sun. ”

Mondale and Roosevelt: Protect the Boundary Waters→

New York Times:

“MINNESOTA’S Boundary Waters Canoe Area Wilderness is one of America’s most popular wild destinations. Water is its lifeblood. Over 1,200 miles of streams wend their way through 1.1 million acres thick with fir, pine and spruce and stippled by lakes left behind by glaciers. Moose, bears, wolves, loons, ospreys, eagles and northern pike make their home there and in the surrounding Superior National Forest.

All of this is now threatened by a proposal for a huge mine to extract copper, nickel and other metals from sulfide ores. The mine would lie within the national forest along the South Kawishiwi River, which flows directly into the Boundary Waters Wilderness.”

Smart people calling for action to protect a national asset.

Les Neuhaus: Farmers Pollute Lake Okeechobee, People Tired of Inaction→

New York Times:

“Mark Perry, executive director of the Florida Oceanographic Society, based in Stuart, said the state’s inability to close a deal to purchase thousands of acres of land south of Lake Okeechobee — to create a natural runoff from the lake into the Florida Everglades, where the diverse ecosystem could naturally filter toxins from the north — has been to blame for the problems being experienced by communities west and east of the lake like Stuart.

But the area south of the lake has been controlled by sugar farmers for decades, and environmentalists like Mr. Perry say state legislators in Tallahassee kowtow to agricultural lobbyists who fund their re-election campaigns.

“The flow used to go south to the Everglades, and now this is a man-made, criminal disaster,” Mr. Perry said. “They, as in the state and federal government, say they can’t send the water south, but they can. This is an absolute atrocity that they are allowed to continue this in the name of agriculture. This is the worst I’ve ever seen it.”

The 2016 sugar harvest was the longest on record because of rain delays, making it also one of the most profitable on record, resulting in 2.15 million tons of sugar. Under Mr. Scott, the board of the South Florida Water Management District failed in 2015 to carry out a plan to buy roughly 47,000 acres of land from U.S. Sugar south of Lake Okeechobee that would have acted as a reservoir for the lake’s runoff.”

And then the state politicians have the gall to blame environmental agencies or the President of the United States.

Nathan Martin: Animal Migrations→

The Atlantic:

“Much of the current research on migration taking place in Wyoming stems, at least in part, from the work of Hall Sawyer, who grew up hunting and fishing in the state and has studied its wildlife for more than 15 years. In the late 1990s, Sawyer tracked the migration of a herd of pronghorn from Grand Teton National Park more than 100 miles south into the Upper Green River Valley. Then, in the mid-2000s, he stumbled upon a revelation when he was tracking mule deer herds in a southwestern part of the state called the Red Desert.

“We thought the mule deer just resided year-round in the desert or migrated short distances out there,” he said. “That’s when we discovered that half of those deer were migrating some 150 miles.”

The migration Sawyer revealed is the second longest recorded land migration in North America—only Arctic caribou go further. But these mule deer do not travel across barren tundra. Between the herd’s winter range in the windblown Red Desert and summer habitat among the granite and cool timber of the Hoback Canyon, they travel through oilfields and skirt residential developments, swim reservoirs and finger lakes, and cross three highways and more than 100 fences. The migration traverses a complex patchwork of public and private land controlled by people and agencies with diverse, sometimes conflicting interests.

That a migration of such epic length existed in the first place—unknown, under science’s nose, in the 21st century—struck Sawyer as amazing. But as the excitement subsided, he started to think about how difficult it would be to ensure that such a migration could persist. ”

Fascinating story about animal migration and the research on elk migration in and around Yellowstone National Park.

France Diep: Water Use per Crop→

ScienceLine (via street.mn chart of the day):

“Homeowners have a “definitely significant” role in the nation’s water budget, says Cristina Milesi, an ecosystem modeling researcher now with NASA who led the 2005 Environmental Management study. “Each family may have only a small lawn,” she explains, “but once you add them all up they have a big impact.”

Watering the lawn generally accounts for 50 percent to 75 percent of a home’s water use during the summer. To save water and money, Milesi suggests choosing more drought resistant turf and adjusting your watering schedules to fit the weather and season. Many cities have suggested or required water schedules for different times of the year.

Some even advocate abandoning the great green lawn in favor of meadows, vegetable gardens, local native plants or just letting the grass die.”

Ron Meador: Lawyers Should Report Environmental Abuse→

MINNPOST:

“If a lawyer can break client confidentiality to disclose child abuse, alert police to an impending assault, or blow the whistle on financial fraud — well, why not to report crimes against the environment?

That excellent and, I think, eminently reasonable question is discussed at length in the Boston College Law Review by Tom Lininger, a professor at the University of Oregon’s law school.

A former federal prosecutor of polluters who mishandled hazardous waste, Lininger’s scholarship focused on domestic violence and sexual assault before turning to the intersection of ethics and environment in American bar associations’ codes.”

 “Green Ethics for Lawyers” can be read here.

Sean Caroll: An Ecology Lesson

Nautilus:

“Why is the planet green? Why don’t the animals eat all of the food? And what happens when certain animals are removed from a place? These questions led to the discovery that, just as there are molecular rules that regulate the numbers of different kinds of molecules and cells in the body, there are ecological rules that regulate the numbers and kinds of animals and plants in a given place. And these rules may have as much or more to do with our future welfare than all the molecular rules we may ever discover...

One major school of thought was that population size was controlled by physical conditions such as the weather. Smith, Hairston, and Slobodkin (hereafter dubbed “HSS”) all doubted this idea because, if true, it meant that population sizes fluctuated randomly with the weather. Instead, the trio was convinced that biological processes must control the abundance of species in nature, at least to some degree.

HSS pictured the food chain as subdivided into different levels according to the food each consumed (known as trophic levels). At the bottom were the decomposers that degrade organic debris; above them were the producers, the plants that relied on sunlight, rain, and soil nutrients; the next level were the consumers, the herbivores that ate plants; and above them the predators that ate the herbivores.

The ecological community generally accepted that each level limited the next higher level; that is, populations were positively regulated from the “bottom up.” But Smith and his lunch buddies pondered the observation that seemed at odds with this view: The terrestrial world is green. They knew that herbivores generally do not completely consume all of the vegetation available. Indeed, most plant leaves only show signs of being partially eaten. To HSS, that meant that herbivores were not food-limited, and that something else was limiting herbivore populations. That something, they believed, were predators, negatively regulating herbivore populations from the “top-down” in the food chain. While predator-prey relationships had long been studied by ecologists, it was generally thought that the availability of prey regulated predator numbers and not vice-versa. The proposal that predators as a whole acted to regulate prey populations was a radical twist...

Indeed, trophic cascades have been discovered across the globe, where keystone predators such as wolves, lions, sharks, coyotes, starfish, and spiders shape communities. And because of their newly appreciated regulatory roles, the loss of large predators over the past century has Estes, Paine, and many other biologists deeply concerned.”

Luke Runyon: Causes of the Monarch Butterfly Decline→

NPR:

“Monarch butterflies are disappearing. Populations of these distinctive black and orange migratory insects have been in precipitous decline for the past 20 years, but scientists aren’t exactly sure what’s causing them to vanish.

So far, potential culprits include disease, climate change, drought and deforestation. Everyone from loggers to suburban developers has been implicated. But much of the blame has been placed on farmers and the pesticides they rely on — pesticides that have reduced the milkweed that monarch caterpillars feast on. Now, however, scientists say that may not be the full story.

Every spring, hundreds of thousands of monarchs sweep across the Great Plains from Mexico to Canada, and then back again in the fall. It’s an amazing journey, one that takes place over multiple generations for the butterflies. The insects breed while traveling north, expending four generations to make it to Canada. The final generation then flies all the way back to Mexico to spend the winter there.

Monarch populations are measured in hectares (roughly 2 1/2 acres). Surveys of their wintering habitats in the central mountains of Mexico show dense populations of monarchs at an average of more than nine hectares during the winters from 1995 to 2002. In 2014, monarchs took up less than one hectare.”

Ron Seely: Bacteria in Private Wells at a Crisis→

WisconsinWatch.org:

“Late on a winter night in 2004 in Kewaunee County, six-month-old Samantha Treml was rushed to an emergency room, violently ill from bathing in water poisoned by manure spread on a nearby frozen field that seeped into the home’s private well. The rest of her family got sick, too.

In 2014, seven people visiting Door County were sickened after manure from a large farm made its way into a home’s private water well.

In 2015, Kewaunee County Board member Chuck Wagner discovered that the new $10,000 well he was forced to install two years earlier was again contaminated with viruses and cow manure. Wagner and his wife now use a reverse osmosis system to filter the water before drinking or cooking while they contemplate whether to dig a second new well.

And this year, the Algoma School District is offering free water to residents whose wells are contaminated...

Between 2007 and 2010, an estimated 18 percent of 3,868 private wells in Wisconsin tested positive for coliform bacteria — an indicator of disease-causing bacteria, viruses or parasites — according to a 2013 study by researchers with the state Department of Health Services. That translates into as many as 169,200 of the 940,000 Wisconsin households served by private wells exposed to disease-causing pathogens.”

Matt Steele: Zoning Contributes to Unaffordability→

streets.mn:

“There’s an Ethiopian proverb that goes something like, “When spider webs unite, they can tie up a lion.” When it comes to housing, Minneapolitans may have it better than those in Seattle, San Francisco, D.C., and Brooklyn, but a larger and wider slice of Minneapolis is feeling the pinch of fast-rising rents. For some, this even means displacement or possibly even homelessness. This is unacceptable. And it doesn’t have to be this way, because we could eliminate artificial caps on housing supply in Minneapolis, thereby reducing equilibrium rents and making housing more affordable for more people. If every dwelling unit is like a little barely-visible spider web, it may seem like a unit here or two units there won’t make a big difference. But, on the whole, the economics are sound: Rising supply necessarily lowers rents.

No, I’m not going to claim that upzoning is the panacea to housing affordability. But our current zoning code is working against natural housing supply, and that’s working against housing affordability. It seems like such an easy, obvious win to get rid of the barriers to new housing stock in our city.

To understand how our zoning code is restrictive to the point of being harmful to housing affordability, let’s look at a real life example... ”

The reader comments to this article are worth reading as well.

John Enger: Our Private Sewers Pollute→

MPR:

“The water that fills Ken Henrickson’s toilet bowl is pumped directly from the lake he lives on, and when he flushes, it goes back to the lake.

”I’m not sure if it’s a good system or not,” he said last month. Henrickson lives along the rocky shore of Rainy Lake, which forms part of Minnesota’s border with Canada, in the state’s far north.

Henrickson’s is one of the half-million Minnesota homes from which wastewater flows into buried septic tanks — systems that are maintained, and often ignored, by homeowners, not professional engineers. The Minnesota Pollution Control Agency estimates one in every five septic systems across the state is failing.

The water off Henrickson’s piece of shoreline is laced with sewage — likely his own, and that of about 200 neighbors. There are at least that many failing septic systems in a 15-mile stretch from Henrickson’s neighborhood east to Voyageurs National Park.”

We really need to move to more advanced sewer systems in shorelands. 

Global Warming Visual→

Climate Lab:

“The animated spiral presents global temperature change in a visually appealing and straightforward way. The pace of change is immediately obvious, especially over the past few decades. The relationship between current global temperatures and the internationally discussed target limits are also clear without much complex interpretation needed.”

Click this link to go to the animated data graphic. An interesting way to present a lot of data!

Janet Marinelli: When is a Plant Native?→

Yale Environment 360:

“Among the plants that survive on the family property where [Emily] Dickinson confined herself for much of her adult life are picturesque old trees called umbrella magnolias (Magnolia tripetala) — so named because their leaves, which can reach two feet long, radiate out from the ends of branches like the spokes of an umbrella.

The trees, believed to have been planted by Emily’s brother Austin, have jumped the garden gate in recent decades and established wild populations not far from the poet’s home. This new location is a couple of hundred miles north of the tree’s native range, centered in the sheltered woods and ravines of the Appalachian Mountains, and is the first evidence that native plant horticulture in the United States “is giving some species a head-start on climate change,” according to Smith College biologist Jesse Bellemare.

Ironically, the denizen of the Dickinson homestead is also challenging basic precepts of conservation practice, such as what is the definition of “native”? Are climate refugees that hitchhike north via horticulture less worthy of protection than plants that arrive on their own? Do they pose a threat to existing native species? Should native plant gardening, the domestic form of assisted migration, be used to help plants stranded in inhospitable habitat? ”

Who are you to judge the merits of a new arrival? Remember species are judged based on our values -- the ecosystem does not care. See ‘My Science Articles’ for an article on non-native species management that is just creating environmental wrecks.

For more information on Emily Dickinson's gardens see this recent New York Times article.

Samantha Oliver: Altered Nutrient Flows into Lakes→

UW-Madison Center of Limnology:

“Humans have drastically changed the distribution of nutrients (nitrogen and phosphorus) across the landscape through urbanization, food production and burning fossil fuels. This has come at a cost to water quality; excess nutrients are transported to surface waters where they can fuel toxic algal blooms, foul drinking water and disrupt the ecosystem. We’ve made progress on point source pollution like sewage discharge since the Clean Water Act was established in 1972. But diffuse nutrient sources like runoff from agricultural areas are difficult to manage and still plague surface waters.”

Jake Vander Zanden: Lake Dead Zones→

Reporting from New Zealand:

“UW-Madison’s Limnology Center: Earlier this year, Jake Vander Zanden rented his house out in Madison, packed his things, and headed with his family for a sabbatical in New Zealand. Under the auspices of a Fulbright scholarship, Jake is at the University of Waikato, studying ‘dead zones’ in lakes, where pollution reduces oxygen making it impossible for parts of lakes to support life.

Tell us about your research here in New Zealand
I’m looking at the phenomenon of lake ‘dead zones’. Lakes that in the past had a lot of oxygen in the bottom waters can lose that oxygen due to nutrient pollution – often from human activity – then they become an environment that can’t support life. You lose a lot of the value that would come from a lake, such as fisheries, when you have dead zones.

It seems like once you create dead zones they are difficult to turn back. Even if you remove nutrients and improve conditions, the healthy ecosystem never returns. That’s really worrisome because it is so difficult to fix the problem. Another consideration is that when you create a dead zone, the plant nutrient phosphorus is released from the lake sediments, which further contributes to the pollution problem.”

Tom Neil: Minneapolis Parks -- Priority for Repair→

MinnPost:

“The map below shows the 106 Minneapolis parks that were recently given priority rankings (out of 157 total neighborhood parks in the city) for maintenance and improvement under the Minneapolis Park and Recreation Board’s new capital and rehabilitation plan. The parks in the darker shade of green are slated for improvements to be made in the next five years; parks in lighter green will be included in future plans. Click on a park to see its overall ranking and the projects that are planned for the park, if known. To search for an address, use the box in the upper-right corner. For more information on how the rankings were determined, see the table...”

Good organization of the data on the city parks.

Julienne Isaacs: The Benefits and Limits of Buffers→

Manitoba Co-operator:

“Sandi Riemersma, an environmental biologist with Palliser Environmental Services, says the effectiveness of buffers depends on several factors, including the slope of land, soil characteristics, buffer width, vegetation, season and management.

“A riparian buffer strip is a good tool to reduce sediment transport and often can reduce particulate phosphorus mobility,” she says. “But buffers are not effective in winter and early spring when vegetation is dormant, soils are frozen and microbial activity is low or absent,” she says.

Riemersma emphasizes nutrient application management as an essential aspect of protecting waterways from nutrient run-off. In addition, she says permanent cover should be maintained near waterways, steep slopes and on erodible and saline soils. “Riparian buffers help to maintain stable stream banks, thereby reducing soil erosion and associated sediment and nutrient transport in waterways,” she says.”

Kurt Chandler: Who Gets to Drink From the Great Lakes?→

Atlantic:

“Water has become the 21st-century equivalent of oil, and a plan to divert water from the Great Lakes to surrounding areas is raising questions about the possibility of future water grabs from far-flung water-sparse regions.

While plans to divert water from the Great Lakes basin date back to the early 1900s, modern-day attempts have become increasingly extravagant. In 1982, Congress directed the U.S. Army Corps of Engineers to study the feasibility of using Great Lakes water to irrigate farmland on the Great Plains. (Not so feasible, said the Corps.) Fifteen years later, a businessman in Canada secured a permit from the Ontario Ministry of the Environment to transport 158 million gallons of water each year from Lake Superior to Asia in tanker ships. (He withdrew his proposal in 1998 under pressure from Canadian officials.) And in 2007, New Mexico Governor Bill Richardson, in his presidential bid, suggested piping Great Lakes water to the arid Southwest. (Richardson’s campaign foundered and his trial balloon burst.)

But it was the proposal put forth by the Canadian businessman that especially rattled citizens and set off alarms among officials in the eight states and two provinces that border the Great Lakes, propelling them to devise once and for all a binding binational system that would manage and regulate the largest source of surface freshwater in the world. Over the course of seven years, policy makers, lawyers, and elected officials from each of the Great Lakes states and provinces crafted the Great Lakes-St. Lawrence River Basin Water Resources Compact. Passed by Congress and signed into law in 2008 by President George W. Bush, it was lauded as a model agreement by industries and environmentalists alike.”