Growing Returns

Once a pesky plant for farmers, this weed presents a new opportunity

Although milkweed contains toxins, it rarely poses any significant threat to people or animals. Grazing livestock generally avoid milkweeds when sufficient forage is available. (Photo credit: E. Dronkert)

A recent article called milkweed a “yield-robbing weed” for farmers.

Milkweed has a reputation for encroaching on cropland where it can compete with crops for soil and light. The plant can also create a nuisance on ranchlands, as cattle can be poisoned when poor foraging conditions lead hungry cows to milkweed-concentrated areas as a last resort.

This is why milkweed is difficult to find on most farms and ranches today. Along with climate change, it’s also a key reason why the beloved monarch butterfly population has declined by more than 90 percent in the last two decades.

The importance of milkweed

Milkweed is essential for monarchs, since butterflies need the plant to lay their eggs, and caterpillars exclusively feed on the milky sap-filled plant. It’s what makes monarchs poisonous to predators.

Increased herbicide application across the agricultural landscape, as well as mowing in roadside ditches and marginal areas, is eradicating milkweed from rural areas in the Corn Belt and other key regions of the monarch’s migration route.

In order to turn things around for the monarch, we need to change the incentive for landowners from spraying and mowing to protecting and restoring this vital habitat. Read More »

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How an innovative corn supply chain model can empower companies to help farmers

Grain elevator. Credit: Flickr user Wilson Hui

A new study out this week in the Proceedings of the National Academy of Sciences suggests that trying to make supply chains more sustainable is not for the faint of heart, especially when it comes to food – and corn in particular.

Companies are keenly aware that consumers care about where their ingredients come from and how they were grown, and that improving efficiencies along the supply chain can be good for business. But the raw ingredients at the end of those chains are typically produced by a vast network of farmers who bring their corn to regional grain elevators and then sell their crops to grain traders. This is just the start of a lengthy and complicated process that can be challenging for food companies to disentangle and understand, let alone influence to become more sustainable.

That’s why the new study, which focuses on a corn supply chain model developed by the University of Minnesota’s Northstar Initiative for Sustainable Enterprise (NiSE), can be an important tool for empowering food companies with information that can help them tackle the tough job of supply chain sustainability.  Read More »

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Bridging the gap between farm and table

As a student at the George Washington University (GWU), I’ve had the privilege to attend classes taught by Dr. Kathleen Merrigan, former Deputy Secretary of Agriculture and current Executive Director of Sustainability at GWU.

I recently reconnected with Dr. Merrigan at a Washington, D.C. event called Transformers: Food, where she spoke on a panel about how technology and science are changing agriculture, revolutionizing modern food systems and changing the way we consume food.

Afterward, we sat down to talk about how farmers and consumers are adapting to these changes, and what we can look forward to as new movements arise.

At the Transformers: Food event, you mentioned that our society has recently become fixated with food and agriculture. What do you think has fueled this fascination? Read More »

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How the fastest American raptor nearly nosedived into extinction

“Peregrine” comes from the Latin word for traveler, an apt name for this raptor species. Peregrine falcons are limited only by extreme heat, extreme cold, or exceptionally high elevations. (Photo credit: Beth Fishkind)

The peregrine falcon is renowned for its ability to reach diving speeds up to 200 mph. It’s also known for having one of the longest migrations in North America, reaching up to 15,000 miles.

Peregrine falcons are one of the most widespread birds in the world, found on every continent except Antarctica. This extensive range is what made the American peregrine’s dive into near-extinction so worrying.

The peregrine’s swift descent

Historically, there were estimated to be approximately 4,000 breeding pairs of peregrines in the United States. Despite its eminent speed and strength, the population reached alarmingly low numbers in the 1970s when the bird completely disappeared from the eastern U.S. and only 300 breeding pairs remained throughout the rest of the country. Read More »

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There’s no winner takes all when it comes to the environment

After many years of working to protect the environment, I have come to believe in two big ideas: community and civility.

The first seems simple, but is profound nonetheless: From a tiny frog to a giant grizzly, from a family farmer to the residents of our largest cities, all of us are in this together. We all rely upon the benefits that nature provides to prosper.

That’s not what we hear from some politicians who parrot discredited talking points that claim environmental protection kills jobs and cripples the economy.

The truth is that a thriving economy and high quality of life are inextricably linked to, and dependent upon, a healthy environment. We neglect – or worse, punish – the natural world at our peril. Read More »

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A bird has united thousands. It will not divide us.

An icon of the sagebrush sea, the greater sage-grouse is a sight to behold. Males often gather in large numbers to woo females and strut with chests puffed and spiky tails fanned. (Photo credit: Tatiana Gettelman)

It was a sunny, cool morning – a typical September day in Colorado. I pulled up to the Rocky Mountain Arsenal National Wildlife Refuge and walked towards a stage where the state flags for Colorado, Nevada, Montana and Wyoming waved in the wind alongside the American flag.

It was a good morning. Then-Secretary of the Interior Department, Sally Jewell, had announced earlier that morning that the greater sage-grouse – a bird with habitat spanning parts of 11 western states – was “not warranted” for listing under the Endangered Species Act, thanks to one of the largest collaborative conservation efforts in America’s history.

A success story in the sagebrush sea

Sixteen million sage-grouse once roamed the American West. The Plain Indian tribes lived among the birds, hunting them for food and mimicking the males in their ceremonial dances. Meriwether Lewis spotted them “in great abundance” in 1805 during his expedition with William Clark, providing the first written account of the species.

As of 2010, there were approximately 200,000 to 500,000 birds remaining.

Read More »

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4 reasons why Arizona water is on the right track

The Lake Mead “bathtub rings,'” as seen from Hoover Dam.

Drought is the new normal in Arizona and the Colorado River Basin. The Colorado River is over-allocated, and potential reductions in Arizona water deliveries have become more and more likely.

Just last summer, we watched Lake Mead drop to one of its lowest levels ever. And even with a wet winter this year, Lake Mead’s elevation remains low. The river that provides 40 percent of Arizona’s water supplies needs our help.

A new deal

This summer, several parties came together to sign a “system conservation” agreement to address the situation. The State of Arizona, City of Phoenix, U.S. Bureau of Reclamation, and the Walton Family Foundation agreed to compensate the Gila River Indian Community to leave 40,000 acre feet of its 2017 Colorado River water entitlement in Lake Mead.

This is about 1.3 billion gallons of water, which is roughly the amount needed to serve 100,000 people in a year. The conserved water is designated as “system water” to help keep Lake Mead from falling below 1,075 feet – the elevation at which a federal shortage declaration is triggered and water delivery reductions are mandated (as stated in the proposed Lower Basin Drought Contingency Plan between Arizona, California, Nevada and the U.S. Bureau of Reclamation).

Read More »

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Why we need a new era of collaborative conservation

This year’s Gulf of Mexico dead zone is the largest ever recorded, affecting 8,776 square miles – similar in size to the state of New Jersey.

Agriculture – from fertilizers and livestock production – is a major source of the nutrients that cause these harmful algal blooms in our lakes and coastal areas. Fertilizers are required to grow food, but we know that making farming practices more efficient and creating natural buffers and filters around farms can reduce runoff.

Farming is already risky business, with unpredictable weather, tough global competition and fluctuating commodity prices.

Implementing conservation practices at scale without hurting growers’ productivity requires understanding the challenges of different sectors and bringing together their expertise and investment. It’s a collaborative effort, and we must recognize that we are all working around a common goal: a more sustainable food system.

This month, Environmental Defense Fund is launching a series of public events – in Bozeman, St. Louis, and Des Moines – to highlight, advance, and celebrate collaborations among private landowners, food and agriculture companies, policy makers, and the public.

Read More »

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It’s time for stream policy to catch up with the science

Will Harman at the Smith-Austin site explaining the restoration efforts that took place in this particular creek, such as re-meandering the channel and planting riparian vegetation.

Streams are one of the most important sources of drinking water across the country. That’s why it is especially alarming that scientists have concerns about North Carolina’s streams and rivers, where I get much of my drinking water.

But streams aren’t just for drinking. These waterways provide countless other benefits to local communities, including recreational opportunities, flood control, improved fish and wildlife habitat, and irrigation for agriculture, to name a few. That’s why it’s vitally important that impacts to streams are offset with effective restoration.

Earlier this month, I visited the site of a successfully restored stream not far from my home with Will Harman, stream mitigation expert at Stream Mechanics and partner to our stream work at EDF.

Will has been working with streams for over 25 years – first launching the stream restoration program at North Carolina State University, and then starting his own private company for stream restoration and mitigation. His three-pronged approach involves conducting applied research, teaching and completing projects.

During our site visit, I had the opportunity to ask Will several questions about the site, the tools he uses to design stream restoration projects, and next steps for protecting streams in North Carolina and beyond.

Read More »

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How the Midwest can save the monarch

Monarch lands on a milkweed in the Midwest

Monarch populations have declined by 90 percent in the past two decades due, in large part, to the loss of milkweed across the Midwest.

Once again, summer has brought the highly anticipated sightings of monarch butterflies across the country. An online tracker from Journey North shows the beloved orange and black butterflies fanning across the Northeast and Upper Midwest, where the eastern population is completing its northern migration. I spotted a monarch in Missouri just last week.

It’s a wonderful sight and an inspiring reminder of the monarch’s magical migration. But the opportunity to witness this natural miracle is dwindling. Over the last two decades, the monarch population has declined by 90 percent, bringing the butterfly dangerously close to extinction.

There are many factors contributing to this devastating loss, from climate change to deforestation. But a major contributor is the loss of milkweed habitat across the U.S., particularly in the Midwest where native prairies have largely been converted for agricultural use. Monarchs need milkweed to lay their eggs – eggs that turn into caterpillars that feed exclusively on the milky plants. So how do we restore this vital milkweed habitat where monarchs need it the most? Read More »

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