Category Archives: Tools

Ecological Management, Greenlash, Ideas, Vulnerability

The Vegetable-Industrial Complex

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Michael Pollan article The Vegetable-Industrial Complex in the October 15th New York Times describes an example of Holling’s pathology of natural resource management in agriculture.

Wendell Berry once wrote that when we took animals off farms and put them onto feedlots, we had, in effect, taken an old solution — the one where crops feed animals and animals’ waste feeds crops — and neatly divided it into two new problems: a fertility problem on the farm, and a pollution problem on the feedlot. Rather than return to that elegant solution, however, industrial agriculture came up with a technological fix for the first problem — chemical fertilizers on the farm. As yet, there is no good fix for the second problem, unless you count irradiation and Haccp plans and overcooking your burgers and, now, staying away from spinach. All of these solutions treat E. coli 0157:H7 as an unavoidable fact of life rather than what it is: a fact of industrial agriculture.

But if industrial farming gave us this bug, it is industrial eating that has spread it far and wide. We don’t yet know exactly what happened in the case of the spinach washed and packed by Natural Selection Foods, whether it was contaminated in the field or in the processing plant or if perhaps the sealed bags made a trivial contamination worse. But we do know that a great deal of spinach from a great many fields gets mixed together in the water at that plant, giving microbes from a single field an opportunity to contaminate a vast amount of food. The plant in question washes 26 million servings of salad every week. In effect, we’re washing the whole nation’s salad in one big sink.

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Ecological Management, General, Networks, Vulnerability

Two faces of India: water and wind

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india sanitationIn two recent articles the New York Times has written about different faces of India: environmental crisis and environmental innovation both driven by failures to effectively govern energy and water systems.India’s water management crisis is described in the article In Teeming India, Water Crisis Means Dry Pipes and Foul Sludge. The article focuses on New Delhi and how India’s inequality limits its ability to govern public goods, such as aquifiers, rivers, and even its water system.

The crisis, decades in the making, has grown as fast as India in recent years. A soaring population, the warp-speed sprawl of cities, and a vast and thirsty farm belt have all put new strains on a feeble, ill-kept public water and sanitation network.

The combination has left water all too scarce in some places, contaminated in others and in cursed surfeit for millions who are flooded each year. Today the problems threaten India’s ability to fortify its sagging farms, sustain its economic growth and make its cities healthy and habitable. At stake is not only India’s economic ambition but its very image as the world’s largest democracy.

…New Delhi’s water woes are typical of those of many Indian cities. Nationwide, the urban water distribution network is in such disrepair that no city can provide water from the public tap for more than a few hours a day.

An even bigger problem than demand is disposal. New Delhi can neither quench its thirst, nor adequately get rid of the ever bigger heaps of sewage that it produces. Some 45 percent of the population is not connected to the public sewerage system.

Those issues are amplified nationwide. More than 700 million Indians, or roughly two-thirds of the population, do not have adequate sanitation. Largely for lack of clean water, 2.1 million children under the age of 5 die each year, according to the United Nations.

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[New Delhi’s] pipe network remains a punctured mess. That means, like most everything else in this country, some people have more than enough, and others too little.

The slums built higgledy-piggledy behind Mrs. Prasher’s neighborhood have no public pipes at all. The Jal Board sends tankers instead. The women here waste their days waiting for water, and its arrival sets off desperate wrestling in the streets.

Kamal Krishnan quit her job for the sake of securing her share. Five days a week, she would clean offices in the next neighborhood. Five nights a week, she would go home to find no water at home. The buckets would stand empty. Finally, her husband ordered her to quit. And wait.

“I want to work, but I can’t,” she said glumly. “I go mad waiting for water.”

Elsewhere, in the central city, where the nation’s top politicians have their official homes, the average daily water supply is three times what finally arrives even in Mrs. Prasher’s neighborhood.

The same public failings have also lead to an unexpected wind power boom in India. This boom, lead by Suzlon Energy, is described in The Ascent of Wind Power.

Not even on the list of the world’s top 10 wind-turbine manufacturers as recently as 2002, Suzlon passed Siemens of Germany last year to become the fifth-largest producer by installed megawatts of capacity. It still trails the market leader, Vestas Wind Systems of Denmark, as well as General Electric, Enercon of Germany and Gamesa Tecnológica of Spain.
Suzlon’s past shows how a company can prosper by tackling the special needs of a developing country. Its present suggests a way of serving expanding energy needs without relying quite so much on coal, the fastest-growth fossil fuel now but also the most polluting.
…

Roughly 70 percent of the demand for wind turbines in India comes from industrial users seeking alternatives to relying on the grid, said Tulsi R. Tanti, Suzlon’s managing director. The rest of the purchases are made by a small group of wealthy families in India, for whom the tax breaks for wind turbines are attractive.

…

The demand for wind turbines has particularly accelerated in India, where installations rose nearly 48 percent last year, and in China, where they rose 65 percent, although from a lower base. Wind farms are starting to dot the coastline of east-central China and the southern tip of India, as well as scattered mesas and hills across central India and even Inner Mongolia.

WorldChanging also comments on wind power in India.

Adaptation, Networks, Vulnerability

Building more resilient neighborhoods

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Elena Bennett writes:
If, as Alex Steffen argued recently on World Changing, increasing neighborhood resilience is important, how can we go about ensuring that our communities are resilient as possible? Steffen writes, for example that, “Communities which have been designed to be walked and biked rather than driven can better withstand a disruption in the supply of gas.”

The Orion Grassroots Network has a new member, an informal organization that could increase neighborly communication, effectively making communities more resilient. The organization is called the Professional Porch Sitters.

The group was started by Claude Stephens (a.k.a. Crow Hollister) in Louisville, KY, who writes:

“There are no dues, no membership requirements, no mailings, no agenda, no committees, no worries. PPS believes that the radical act of sitting around sharing stories with no specific agenda is critical to building sustainable communities….To become a member you simply need to say you are a member and agree to sit around with friends and neighbors shooting the breeze as often as possible or practical. Preferably on a porch but that’s not critical…

Television and air-conditioning have moved far too many people off their porches and into their homes where they quickly become isolated from their communities. We believe that sometimes the most effective course of action is to sit down and relax while sipping lemonade and sharing stories.”

National Public Radio’s show All Things Considered recently had a story on the merits of porches which mentioned the Professional Porch Sitters in which they write:

“Porches, debate and democracy go together.”

You can find out more about starting your own chapter of the Professional Porch Sitters at the Orion Grassroots Network

Greenlash, Ideas, Millennium Ecosystem Assessment, Vulnerability

Biodiversity Loss Threatens Human Well-Being

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Sandra Díaz, Joseph Fargione, Terry Chapin and David Tilman have nice a Millennium Ecosystem Assessment based review essay Biodiversity Loss Threatens Human Well-Being in PLOS Biology. The article summarizes current understanding of how biodiversity influences human wellbeing.

fig 1 plos biolHuman societies have been built on biodiversity. Many activities indispensable for human subsistence lead to biodiversity loss, and this trend is likely to continue in the future. We clearly benefit from the diversity of organisms that we have learned to use for medicines, food, fibers, and other renewable resources. In addition, biodiversity has always been an integral part of the human experience, and there are many moral reasons to preserve it for its own sake. What has been less recognized is that biodiversity also influences human well-being, including the access to water and basic materials for a satisfactory life, and security in the face of environmental change, through its effects on the ecosystem processes that lie at the core of the Earth’s most vital life support systems.

…

By affecting the magnitude, pace, and temporal continuity by which energy and materials are circulated through ecosystems, biodiversity in the broad sense influences the provision of ecosystem services. The most dramatic changes in ecosystem services are likely to come from altered functional compositions of communities and from the loss, within the same trophic level, of locally abundant species rather than from the loss of already rare species. Based on the available evidence, we cannot define a level of biodiversity loss that is safe, and we still do not have satisfactory models to account for ecological surprises. Direct effects of drivers of biodiversity loss (eutrophication, burning, soil erosion and flooding, etc.) on ecosystem processes and services are often more dramatic than those mediated by biodiversity change. Nevertheless, there is compelling evidence that the tapestry of life, rather than responding passively to global environmental change, actively mediates changes in the Earth’s life-support systems. Its degradation is threatening the fulfillment of basic needs and aspiration of humanity as a whole, but especially, and most immediately, those of the most disadvantaged segments of society.

Adaptation, Design, General

Pop-up seasonal housing: adaptive architecture

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tideaways planeBuilding long last durable buildings is one way of approaching green building. Another approach, which was discussed in the TechnoGarden scenario of the Millennium Ecosystem Assessment, is designing ephemeral buildings that are there when needed and removed when they are not, allowing other uses of the land.A new adaptive architecture approach to the design of Irish seasonal houses has been developed by MacGabhann Architects. The project called Tideaways is part of Ireland’s contribution the Venice Biennale architecture exhibition. They propose houses and develops that are designed to respond to changing seasons and housing use.

In a Guardian article Vanishing trick for Ireland’s second homes (Sept 6, 2006) Owen Bowcott writes about the project:

The Tideaways designs refined by the MacGabhanns envisage rows of three terraces on the coast located inside existing communities. The first row would float on pontoons and could be towed to a harbour when unoccupied. The row behind would rise and fall, on hydraulic rams, with the tide; in winter they could be sunk down to ground level, disappearing into the landscape.

The third row would be permanent and would provide homes for long-term residents of the village. The houses, timber or metal-framed, would be mainly two bedroom bungalows.

…

“Our model would ensure there was less impact on the landscape and better planning in villages. We have not built these yet but the Irish government has been very supportive.

“The proliferation of holiday homes has the potential to destroy the very landscape that attracts people in the first place. Despite being in use only 10-20% of the year, these buildings are visible 100% of the time.”

Ecological Management, General, New Orleans, Reorganization

Mississippi meanders

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NASA’s Earth Observation newsroom presents satelite images to go with the geological map of Mississippi Meanders used to make the top image of this blog.

NASA EOS image

NASA explains:

As it winds from Minnesota to the Gulf of Mexico, the Mississippi River is in constant flux. Fast water carries sediment while slow water deposits it. Soft riverbanks are continuously eroded. Floods occasionally spread across the wide, shallow valley that flanks the river, and new channels are left behind when the water recedes. This history of change is recorded in the Geological Investigation of the Alluvial Valley of the Lower Mississippi River, published by the Army Corps of Engineers in 1944.

This map of an area just north of the Atchafalaya River shows a slice of the complex history of the Mississippi. The modern river course is superimposed on channels from 1880 (green), 1820 (red), and 1765 (blue). Even earlier, prehistoric channels underlie the more recent patterns. An oxbow lake—a crescent of water left behind when a meander (bend in the river) closes itself off—remains from 1785. A satellite image from 1999 shows the current course of the river and the old oxbow lake. Despite modern human-made changes to the landscape, traces of the past remain, with roads and fields following the contours of past channels.

In the twentieth century, the rate of change on the Mississippi slowed. Levees now prevent the river from jumping its banks so often. The levees protect towns, farms, and roads near the banks of the river and maintain established shipping routes and ports in the Gulf of Mexico. The human engineering of the lower Mississippi has been so extensive that a natural migration of the Mississippi delta from its present location to the Atchafalaya River to the west was halted in the early 1960s by an Army Corps of Engineers project known as the Old River Control Structure (visible in the full-size Landsat image).

The delta switching has occurred every 1,000 years or so in the past. As sediment accumulates in the main channel, the elevation increases, and the channel becomes more shallow and meandering. Eventually the river finds a shorter, steeper descent to the Gulf. In the 1950s, engineers noticed that the river’s present channel was on the verge of shifting westward to the Atchafalaya River, which would have become the new route to the Gulf. Because of the industry and other development that depended on the present river course, the U.S. Congress authorized the construction of the Old River Control Structure to prevent the shift from happening.

For some related reading, John McPhee discusses the Old River Control Structure and US Army Corps attempts to regulate the Mississippi in his great 1989 book the Control of Nature. John Barry provides a history of the regulation of the Mississippi in his book Rising tide: the great Mississippi flood of 1927 and how it changed America.

I previously wrote about the ecology of the Mississippi, Michael Grunwald has an article in Grist Rotten to the Corps arguing that the Corps is behind New Orleans destruction, and wikipedia has an article about levee failures in New Orleans.

Ecological Economics, Ecological Management, General

Low input agriculture as a tool for poverty alleviation

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In many places around the world farmers are discovering that lower input (of fertilizers and pesticides) agriculture can be more profitable, and lower risk, than conventional high input alternatives.

Ethan Apri on NextBillion.net points to an  Asia Times article Turkey’s born-again farmer about Nazmi Ilicali, a farmer in Eastern Turkey who promotes organic agriculture to reduce rural poverty. The region grows organic wheat, rye, barley, white beans, green lentils, chickpeas and bulgur wheat and promotes itself and organizes sales via www.daphan.org. In the article Ilicali explains why and how he promotes organic agriculture:

He explains why, ironically, the poverty of this area makes it perfect for starting organic farming projects: “The earth in this area is especially suitable, because the local population is so poor that for years they have been unable to afford chemical fertilizers. The climate is good for organic agriculture, too. The frost and cold here even kill the eggs laid in the earth by insects, and because of that there is no need for pesticides – we have a totally chemical-free soil.”

Soon after joining the Daphan project, Nazmi took a further step. “After doing extensive research, I decided that organic agriculture was the only investment with good potential in the east of Turkey. But I also knew that any efforts would have to be made in an organized way. When I first became involved three years ago, I brought 633 farmers together, and the European Community gave me the financial support to set up the Eastern Anatolian Farmers and Livestock Keepers Union. Now we have 3,000 members, and are still gathering members like an avalanche gathers snow.”
…

Nazmi explains that when they first started, the biggest problem they had was the packaging and processing of their organic products. Rather than allowing this to stall their progress, they built a small factory and made every member of the association a shareholder. The factory began to grind their own cereals into flour and package it. Their brand identity, sales and profit margins have all improved since.

This experience is placed in a broader context by Bill McKibben. In April 2005 he had a good rich article The Cuba Diet, about Cuba’s semi-successful, involuntary transition to low-input organic agriculture in Harper’s magazine . To put Cuba’s unusual agricultural system (McKibben calls it something like high fedualism) in context he talks to Jules Pretty about other alternative agriculture systems around the world:

… strict organic agriculture isn’t what the Cubans practice (remember those pesticides for the potato bugs). “If you’re going to grow irrigated rice, you’ll almost always need some fertilizer,” said Jules Pretty, a professor at the University of Essex’s Department of Biological Sciences, who has looked at sustainable agriculture in fields around the world. “The problem is being judicious and careful.” It’s very clear, he added, “that Cuba is not an anomaly. All around the world small-scale successes are being scaled up to regional level.” Farmers in northeast Thailand, for instance, suffered when their rice markets disappeared in the Asian financial crisis of the late 1990s. “They’d borrowed money to invest in ‘modern agriculture,’ but they couldn’t get the price they needed. A movement emerged, farmers saying, ‘Maybe we should just concentrate on local markets, and not grow for Bangkok, not for other countries.’ They’ve started using a wide range of sustainability approaches—polyculture, tree crops and agroforestry, fish ponds. One hundred and fifty thousand farmers have made the shift in the last three years.”

Almost certainly, he said, such schemes are as productive as the monocultures they replaced. “Rice production goes down, but the production of all sorts of other things, like leafy vegetables, goes up.” And simply cutting way down on the costs of pesticides turns many bankrupt peasants solvent. “The farmer field schools began in Indonesia, with rice growers showing one another how to manage their paddies to look after beneficial insects,” just the kinds of predators the Cubans were growing in their low-tech labs. “There’s been a huge decrease in costs and not much of a change in yields.”

See also Elena Bennet’s Resilience Science post on Ecological synergisms in agriculture.

Ecological Management, Greenlash

Complicated ecological tradeoffs from water & agriculture

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A recent paper in Water Resources Research (2006: 42) by Eloise Kendy and John Bredehoeft Transient effects of groundwater pumping and surface-water-irrigation returns on streamflow shows how a long history of excess irrigation in the US west has prodcued streamflow that ecosystems and people have come to rely upon. Now improvements in irrigation effectiveness (i.e. more crop per drop) could reduce this streamflow. These connections show how complicated tradeoffs between different water uses can become. Fortunately, in this case, as in many others, it appears that more sophisticated water management can reduce the intensity of this tradeoff.

Abstract: In surface-water-irrigated western valleys, groundwater discharge from excess irrigation sustains winter streamflow at levels that exceed natural flows. This unnatural condition has persisted for so long that hydrologists, water managers, and water users consider it to be normal. Changing land uses and irrigation practices complicate efforts to manage groundwater discharge and, in turn, to protect instream flows. We examined the impacts on streamflow of (1) seasonal groundwater pumping at various distances from the Gallatin River and (2) improving irrigation efficiency in the Gallatin Valley, Montana. We show that the greater the distance from a seasonally pumping well to a stream, the less the stream depletion fluctuates seasonally and the greater the proportion of annual depletion occurs during the nonirrigation season. Furthermore, we show that increasing irrigation efficiency has implications beyond simply reducing diversions. Improving irrigation efficiency reduces fall and winter flows to a lower, but more natural condition than the artificially high conditions to which we have become accustomed. However, existing water users and aquatic ecosystems may rely upon return flows from inefficient irrigation systems. By strategically timing and locating artificial recharge within a basin, groundwater and surface water may be managed conjunctively to help maintain desirable streamflow conditions as land uses and irrigation practices change.

Eloise Kendy has a short related article in Geotimes (June 2005) Water woes: predictable but not inevitable, where she writes how land-use change produces inadvertent ecological engineering that should become more intentional and less haphazard.

The change from irrigated agriculture to residential development entails more than simply pumping groundwater. Most irrigation systems in the West — especially the oldest systems on the most productive ground — use diverted surface water. Irrigation water that crops do not use seeps into the soil and eventually reaches the water table, where it recharges groundwater in the underlying aquifer. So-called irrigation return flow is a major source of groundwater recharge in irrigated western valleys.

The irrigation-charged groundwater slowly makes its way underground to rivers, streams and springs, where it eventually discharges. Groundwater discharge from irrigation return flow keeps rivers flowing well into late summer and fall, even after all the snow has long since melted, even after the rains have stopped. Although not a natural phenomenon, we consider this annual flow pattern “normal,” for it has recurred for more than 30 years.

The most important hydrologic change brought on by urban and suburban development is a drastic reduction in groundwater recharge. Urban land surfaces such as roofs, roads and parking lots are impermeable. Rain and snowmelt run off these surfaces, instead of seeping into the ground and recharging aquifers. In a typical engineering design, runoff is quickly shunted into the nearest stream or river to rid the area of potential flood waters. Consequently, localized recharge greatly decreases, streamflow becomes “flashier” (larger fluctuations over shorter periods of time), and late-season, groundwater-fed streamflow decreases. When irrigation stops, seepage from excess irrigation water also stops, or continues to recharge the aquifer only from leaky ditches.

Almost without exception, rural residential development in the West relies on well water for domestic use. So, on top of reducing aquifer recharge, the change from surface-water-irrigated cropland to groundwater-irrigated yards increases aquifer discharge. Less water goes into the aquifer than before, and more water goes out.

Previously, irrigation diversions depleted streamflow in the spring and early summer, and irrigation return flow maintained streamflow well into the late summer and fall. Now, with fewer surface-water diversions, early flows increase, as does the risk of flooding. Conversely, late-season flows decrease, potentially leaving fish and downstream irrigators high and dry.

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When sewers were put in place in Long Island, N.Y., in the 1950s, wastewater that previously recharged the aquifer now discharges straight into the ocean. The loss of aquifer recharge caused the water table to drop about 20 feet. To save the aquifer, more than 3,000 small recharge basins were constructed. Their average combined infiltration rate of 150 millions gallons per day has successfully reversed the trend of declining water levels in the aquifer.

Out West, many creative options exist for water management. Most of the basins within the Basin and Range province, which, loosely defined, extends from Canada to Mexico, provide ideal geologic settings for storing artificially recharged water underground. Using existing irrigation infrastructure, we could spread spring runoff onto benchlands, allowing it to flow underground toward rivers, where it would replace irrigation return flow as a resource for late-season use. Another simple option is to discourage landscaping that requires irrigation.

via Kevin Vranes’s No Se Nada.

General, Reorganization, Tools

Using Tera Preta increase soil resilience

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A Nature News article Black is the new green (10 August 2006) explains research that aims to reinvent Terra Preta, anthropogenic highly productive charcoal rich soils, to improve soil for agriculture while sequestering carbon.
New ways of producing biofuels can to produce charcoal that can be used to enrich soil. This carbon is stored in the soil, and may be able to produce carbon negative fuels in a way that can boost agricultural productivity. From the Nature News article:

…[a group met at the] World Congress of Soil Science. Their agenda was to take terra preta from the annals of history and the backwaters of the Amazon into the twenty-first century world of carbon sequestration and biofuels.

They want to follow what the green revolution did for the developing world’s plants with a black revolution for the world’s soils. They are aware that this is a tough sell, not least because hardly anyone outside the room has heard of their product. But that does not dissuade them: more than one eye in the room had a distinctly evangelical gleam.

The soil scientists, archaeologists, geographers, agronomists, and anthropologists who study terra preta now agree that the Amazon’s dark earths, terra preta do índio, were made by the river basin’s original human residents, who were much more numerous than formerly supposed. The darkest patches correspond to the middens of settlements and are cluttered with crescents of broken pottery. The larger patches were once agricultural areas that the farmers enriched with charred trash of all sorts. Some soils are thought to be 7,000 years old. Compared with the surrounding soil, terra preta can contain three times as much phosphorus and nitrogen. And as its colour indicates, it contains far more carbon. In samples taken in Brazil by William Woods, an expert in abandoned settlements at the University of Kansas in Lawrence, the terra preta was up to 9% carbon, compared with 0.5% for plain soil from places nearby
…Take the work of Danny Day, the founder of Eprida. This “for-profit social-purpose enterprise” in Athens, Georgia, builds contraptions that farmers can use to turn farm waste into biofuel while making char. Farm waste (or a crop designed for biofuel use) is smouldered — pyrolysed, in the jargon — and this process gives off volatile organic molecules, which can be used as a basis for biodiesel or turned into hydrogen with the help of steam. After the pyrolysation, half of the starting material will be used up and half will be char. That can then be put back on the fields, where it will sequester carbon and help grow the next crop.

The remarkable thing about this process is that, even after the fuel has been burned, more carbon dioxide is removed from the atmosphere than is put back. Traditional biofuels claim to be ‘carbon neutral’, because the carbon dioxide assimilated by the growing biomass makes up for the carbon dioxide given off by the burning of the fuel. But as Lehmann points out, systems such as Day’s go one step further: “They are the only way to make a fuel that is actually carbon negative”.

Day’s pilot plant processes 10 to 25 kg of Georgia peanut hulls and pine pellets every hour. From 100 kg of biomass, the group gets 46 kg of carbon — half as char — and around 5 kg of hydrogen, enough to go 500 kilometres in a hydrogen-fuel-cell car (not that there are many around yet). Originally, Day was mostly interested in making biofuel; the char was just something he threw out, or used to make carbon filters. Then he discovered that his employees were reaping the culinary benefits of the enormous turnips that had sprung up on the piles of char lying around at the plant. Combining this char with ammonium bicarbonate, made using steam-recovered hydrogen, creates a soil additive that is now one of his process’s selling points; the ammonium bicarbonate is a nitrogen-based fertilizer.

update: WorldChanging has a bit more on the article