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Archive for the ‘SOIL’ Category

BY TIMOTHY A. SCHULER

Where has all the sediment gone? Image courtesy of Landscape Metrics and the Dredge Research Collaborative.

Where has all the sediment gone? Image courtesy of Landscape Metrics and the Dredge Research Collaborative.

From the December 2016 issue of Landscape Architecture Magazine.

Thanks to a severe shortage of sediment, the tidal marshes of the San Francisco Bay are disappearing, taking with them a vital ecosystem and an important defense against sea-level rise. In response, in June 2016, voters approved a parcel tax that will generate $500 million over the next 20 years for wetland restoration. And yet the sediment hasn’t vanished; it’s a prisoner of the state’s highly altered hydrologic system. “There’s this incredible resource that’s just sitting behind this constellation of dams,” says Landscape Metrics principal Matthew Seibert.

This summer, as a part of DredgeFest California, Seibert worked with the Dredge Research Collaborative and workshop participants to visualize this “hidden sediment reserve.” Based on data published in the journal Water Resources Research in 2009, the team created an interactive map showing where—and when—California’s sediment was diverted, as well as the cost of removing that sediment, which far exceeds the expected $500 million in tax revenue. Seibert is optimistic, however, especially as the economics of climate change become increasingly apparent: “The Baylands have an amazing capacity for flood mitigation that I don’t feel is quantified economically yet, or valued as it should be.”

For an interactive version of this map, visit landscapemetrics.com/dredge.

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BY ANNE RAVER, PHOTOGRAPHY BY FREDERICK CHARLES

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Preserving farmland is not enough if it doesn’t stay in the hands of farmers.

FROM THE DECEMBER 2016 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE

A gorgeous October morning in the Hudson Valley and people are out leaf peeping, but not Chris Cashen, a farmer.

Every week, on the outskirts of Hudson, 120 miles north of New York City, Cashen and his crew load about 1,300 pounds of organic vegetables—baby bok choy, salad greens, Japanese turnips, sweet potatoes, Tuscan kale—onto a truck headed for a food pantry hub in Long Island City.

The hot, dry summer meant they had to irrigate from the nearby creek, but the vegetables are beautiful and tasty.

A few miles south, Ken Migliorelli zigzags over the potholed roads between his hilly orchard in Tivoli and the flat sandy fields of his cropland in Red Hook. A Valentine’s Day freeze took out all his stone fruit this year—no peaches, nectarines, or cherries—and a hard frost in May reduced his apple crop by 30 percent. (more…)

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BY ZACH MORTICE

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The Living Filtration System. Illustration by Living Filtration System.

It’s the habitat that most determines the health of any ecosystem, but it’s largely invisible to the naked eye. The soil under your feet, if it’s healthy, is filled with all manner of micro-organisms, bacteria, and fungi that break down organic matter into fresh dirt loaded with nutrients, and nourish the plants growing there. Soil is the building block for all healthy biomes, and a critical concern for all landscape architects. It’s also a finite resource that’s been continually degraded (more…)

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The things our art director, Chris McGee, hated to leave out of the current issue of LAM.

Image courtesy of California American Water.

Image courtesy of California American Water.

From “River Reroute” by Lisa Owens Viani in the November 2016 issue; a look at Rana Creek Design’s plans to swap a riverbed for a parallel-running creek so that sediment can be removed from a dam nearing the end of its useful life.

“Busy beavers. . .”

–Chris McGee, LAM Art Director

As always, you can buy this issue of Landscape Architecture Magazine at more than 700 bookstores, including many university stores and independents, as well as at Barnes & Noble. You can also buy single digital issues for only $5.25 at Zinio or order single copies of the print issue from ASLA. Annual subscriptions for LAM are a thrifty $59 for print and $44.25 for digital. Our subscription page has more information on subscription options.

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By Zach Mortice

The 2008 flooding in eastern Iowa saw the Cedar River crest at 31 feet, inundating much of downtown Cedar Rapids. Image courtesy of Sasaki.

On the morning of Jun 12, 2008, the landscape architects Gina Ford, ASLA, and Jason Hellendrung, ASLA, of Sasaki woke up in their hotel rooms by the riverside in downtown Cedar Rapids, Iowa, to stifling heat and eerie silence. They were in town to pitch their riverfront master plan to the city council. They knew the Cedar River was expected to flood (and had stocked up on water, granola bars, and bananas just in case) but neither expected any sort of ordeal stemming from the river, which they had come hoping to reimagine as a lively and gregarious urban greenway. The power, air-conditioning, and phones were out. The hallways were empty and pitch black, and a ferocious rainstorm had darkened the skies and pushed the encroaching floodwaters. Reaching each other via cell phone, they discussed their options. In the distance, the Quaker Oats cereal mill plant’s red neon sign was still lit. “It can’t be that bad,” said Hellendrung. “They still have electricity.”

“As I said that, there was a bolt of thunder and lightning, and the sign went out. Then I was like, ‘Maybe the police will get here soon?’”

Police did dispatch rescuers, who led Ford and Hellendrung out of the hotel. A second-floor connection to the convention center (more…)

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Citizen scientists and experts work to catalogue and identify as many species as possible during the BioBlitz event.

Species experts and families work to identify and catalog as many species as possible during the BioBlitz event.

Since 2007, the National Park Service (NPS) and the National Geographic Society have teamed up to create BioBlitz, an annual event that celebrates the wealth of biodiversity in the United States. Each year, thousands of families sign up to search for and learn about different species of plants, animals, and fungi, among others, in various national parks across the country.

For the centenary year of the NPS, BioBlitz 2016 will be held at Constitution Gardens on the National Mall in Washington, D.C., where ASLA joins a variety of organizations at the Biodiversity Festival to speak on the importance of soil quality and health. “This is a great opportunity to reach out to potentially thousands of families and let them know what landscape architects do,” says Karen Grajales, the manager of public relations for ASLA, who will be joining Virginia Tech landscape architecture students and other ASLA staff members for the event.

To learn more about BioBlitz and potentially get involved, please click here.

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DredgeFest_GreatLakes_Flyer-02 If you missed DredgeFestNYC and DredgeFest Louisiana (see “The Dredge Underground,” LAM, August 2014) then you haven’t experienced one of the most interesting landscape-focused gatherings around. Fortunately, another chance is just ahead at DredgeFest Great Lakes (DFGL) this August. DredgeFest draws a friendly and curious crowd across a wide spectrum of expertise to look critically at dredging and the land it winds up making—and there are many overlaps with contemporary landscape architecture practice.

This event (conference doesn’t really describe it) will focus on the Great Lakes region (aka the Third Coast in dredgespeak). It will include two days of talks and presentations from a range of designers and others who work in this industrial practice; a day of touring dredge sites around Duluth; and a weeklong workshop at the University of Minnesota’s School of Architecture and Department of Landscape Architecture that brings in a very intriguing international cohort of designers.

This third iteration of DredgeFest should be the best yet, with the now-signature mix of intense investigations and industrial monumentality with the speculative edge that has marked previous DredgeFests.

Landscape Architecture Magazine is a cosponsor of DFGL this year. We’re looking forward to inhaling the fascinating new research and meeting folks in Minnesota this August. Registration for one or all parts of DFGL is open now.

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