Archive for the 'Ideas' Category Page 3 of 23



Bamboo, rats, and famine

Many species of bamboo flower and then die in synchronized cycles. These cycles have substantial ecological impacts, and in post cyclone Burma appear to be contributing to famine.  From the Guardian Cyclone, starvation - now plague of rats devastates Burmese villages

Four months after Cyclone Nargis devastated Burma, another natural disaster has struck the country. This time the ruling military regime has had 50 years to prepare for it, yet it has still proved unable and unwilling to respond.

The disaster, known in Burma as maudam, is caused by a cruel twist of nature. Once every 50 years or so the region’s bamboo flowers, producing a fruit. The fruit attracts hordes of rats, which feed on its seeds. Some believe the rich nutrients in the seeds cause the rodents to multiply quickly, creating an infestation. After devouring the seeds, the rats turn on the villagers’ crops, destroying rice and corn. In a country once known as the rice bowl of Asia, thousands of villagers are on the brink of starvation.

The last three cycles of flowering occurred in 1862, 1911 and 1958, and each time they were followed by a devastating famine. The current maudam is proving just as disastrous.

The same sequence of events - bamboo flowering, fruit, rats, and then famine - occurred earlier this year in the mountains of Bangladesh.

Shipping containers and world trade

The BBC is planning to follow and report on the progress of a container around the world for a year.  They have painted a container and bolted a GPS transmitter to allow is readers to follow its progress around the world on their map (as I write this the container full of whiskey in Scotland).

The BBC named their project The Box after The Box: How the Shipping Container Made the World Smaller and the World Economy Bigger an interesting book on the history of containerization and its effect on globalization by Marc Levinson (here is a book review from Ethan Zuckerman and an essay by Witold Rybczynski).

I read the book earlier this year and enjoyed it.  I would have liked more economic history and statistics in the book, but its main problem was that people mocked me when I told them I was reading a book about containers. However, containers have become an essential part of global trade and of its rapid growth.

Trends in world trade of total merchandise, intermediate goods and other commercial services, from 1988-2006 (100=1988).  From WTO\'s World Trade Report 2008.
Trends in world trade of total merchandise, intermediate goods and other commercial services, from 1988-2006 (100=1988). From the WTO’s World Trade Report 2008.

Below are some maps of parts of global trade.  They give a bit of an idea of where such a container is likely to move between.

Structure of world trade of between 28 OECD countries in 1992. The size of the nodes gives the volume of flows  in dollars (imports and exports) for each country . The size of the links stands for the volume of trade between any two countries. Colors give the regional respectively memberships in different trade organisations: EC countries (yellow), EFTA countries (green), USA and Canada (blue), Japan (red), East Asian Countries (pink), Oceania (Australia , New Zealand) (black).  From Max Planck Institute for the Study of Societies.
Structure of world trade of between 28 OECD countries in 1992. The size of the nodes gives the volume of flows in dollars (imports and exports) for each country . The size of the links stands for the volume of trade between any two countries. Colors give the regional respectively memberships in different trade organisations: EC countries (yellow), EFTA countries (green), USA and Canada (blue), Japan (red), East Asian Countries (pink), Oceania (Australia , New Zealand) (black). From Max Planck Institute for the Study of Societies.

World trade imbalance web for the years 1960 and 2000. Directed network of merchandize trade imbalances between world countries. Each country appears as a node and the direction of the arrow follows that of the net flow of money.  (Serrano et al 2007).
World trade imbalance web for the years 1960 and 2000. Directed network of merchandise trade imbalances between world countries. Each country appears as a node and the direction of the arrow follows that of the net flow of money. (Serrano et al 2007).

The book - The Box - includes lots of interesting history of the container system, and how as a system it lead to innovations, efficiencies, and had many unintendend consequences.  One example, is that it made many old ports obsolete which reshaping many city centres (over decades), but also the creation of new ports and the changes in container ships they triggered - caused ongoing shifts in global trade patterns.

One key cycle of change was a postive feedback between ship size and port attributes. Because the fuel consumption of a ship does not increase proportionately to the number of containers a ship can carry - containers ships have become bigger and bigger - which has had the effect of focusing trade into ports that can handle the large ships and the trade volume.  These big ports then lead to the construction of more bigger ships. Wikipedia lists the world’s busiest container ports - the top are Singapore, Shanghai, Hong Kong , Shenzen, and Busan.  This concentration of big ships in big ports has had the effect of making world trade unexpectedly (for economic theory) “lumpy.”  Paul Krugmann explains:

[Economic theory suggests] a country like China should export a wider range of products to a small country, like Ecuador, than it does to a big country, like the US. Why? Because Ecuador, being small, probably has fewer industries that are cost-competitive with Chinese exports. In fact, however, China seems to export a wider range of stuff to bigger economies.

A possible explanation is the lumpiness of transport costs: there are more container ships heading from China to US ports than to Ecuadorian ports, so that it’s worth sending over a bigger range of stuff. It’s like the reason there are fewer food choices in supermarkets on St. Croix (where we spent our last vacation) than in New Jersey — there’s just one boat with groceries coming over every once in a while, so you can’t keep, um, arugula in stock.

Reading the Box also makes it clear that while higher fuel prices will reshape trade patterns and probably boat designs, neither global trade patterns nor transportation costs will return to those of the 1960s or 1970s.  This is due to huge improvements in logistics that have radically dropped the labour cost for shipping goods long distances, and this has also decreased fuel costs.

The rapid expansion of skills in logistics is a hidden environmental efficiency of the moden world economy - in that it allows things to be moved around for less cost than earlier in history.  However as occurs with most increases in efficiency, modern society undoes the environmental advantages of efficiency by using the cost saving to simply move more stuff for the same amount of money.

Logistics makes at least parts of the world “flatter.” And the ease of making these connections appears to make it easier to spread tools and ideas as well as goods.  The World Bank claims that countries with the most predictable, efficient, and best-run transportation routes and trade procedures are also the most likely to take advantage of technological advances, economic liberalization, and access to international markets.  While countries with higher logistics costs are more likely to miss the opportunities of globalization.  The World Bank ranks countries using a logistics performance index which measures the ease with which the country connects to the global economy.  Singapore, Netherlands, and Germany are at the top as the most accessible; while Rwanada, East Timor, and Afghanistan are at the bottom of the rankings.

Of course, novel solutions also produce novel problems.  Discarded containers litter landscapes worldwide (finding uses for them has become a standard architecture project), container ports are centres of environmental and biotic pollution, and the ease of using containers is also useful for smuggling.

And at least my impression from reading The Box, was that containerization has not finished trasnforming the world economy.

P.S. Ethan Zuckerman also has a long post Mapping a connected world discussing containers and world trade.

A transforming Arctic

Arctic sea ice, Sept 8, 2008 (From NASA EO).

From EO Newsroom

This image shows Arctic sea ice concentration on September 8, 2008, as observed by the Advanced Microwave Scanning Radiometer–Earth Observing System (AMSR-E) sensor on NASA’s Aqua satellite. The observations are collected on a pixel by pixel basis over the Arctic. The percentage of a 12.5-square-kilometer pixel covered by ice is shown in shades of dark blue (no ice) to white (100 percent ice). The gray line around the Arctic basin shows the median minimum extent of sea ice from 1979-2000. (The median of a data set is the middle value if you arrange the numbers in order from smallest to largest.)

The southern portions of the Northwest Passage through the Arctic (the western route from Europe to Asia through the islands of northern Canada) opened in early August. Then in early September, ice scientists confirmed that the waters around the Russian coastline—the Northern Sea Route— were navigable, but still treacherous, with shifting floes of thick, multi-year ice, that could coalesce rapidly. The image shows that the widest avenue through the Northwest Passage, Parry Channel, still harbored some ice, but the more circuitous, southern waterways were clear. On the other side of the Arctic Ocean, the passage around Russia’s Taymyr Peninsula, normally locked in by ice, was similarly open. According to a press release from the U.S. National Ice Center, “This is the first recorded occurrence of the Northwest Passage and Northern Sea Route both being open at the same time.”

The summer opening of the Arctic means that new uses of the Arctic are likely to emerge. International legal experts believe that “existing laws governing everything from fish stocks to bio-prospecting by pharmaceutical companies” are inadequate.

To date, the eight Arctic nations (the United States, Russia, Canada, Norway, Sweden, Iceland, Denmark and Finland) have limited discussions to existing agreements, such as the law of the sea. Environmental groups would like new laws, but others have suggested a more feasible, and adaptive response may be to strengthen the role of the existing Arctic Council to better govern a changing Arctic in a more adaptive way.

Buffered and pourous individuals

Canadian Philosopher Charles Taylor, author of the Secular Age and member of the Bouchard-Taylor commission on multiculturalism in Quebec, writes on The Immanent Frame about our Buffered and porous selves:

Almost everyone can agree that one of the big differences between us and our ancestors of five hundred years ago is that they lived in an “enchanted” world, and we do not; at the very least, we live in a much less “enchanted” world. We might think of this as our having “lost” a number of beliefs and the practices which they made possible. But more, the enchanted world was one in which these forces could cross a porous boundary and shape our lives, psychic and physical. One of the big differences between us and them is that we live with a much firmer sense of the boundary between self and other. We are “buffered” selves. We have changed.

This is not a mere “subtraction” story, for it thinks not only of loss but of remaking. With the subtraction story, there can be no epistemic loss involved in the transition; we have just shucked off some false beliefs, some fears of imagined objects. Looked at my way, the process of disenchantment involves a change in sensibility; one is open to different things. One has lost a way in which people used to experience the world.

Modern Westerners have a clear boundary between mind and world, even mind and body. Moral and other meanings are “in the mind.” They cannot reside outside, and thus the boundary is firm. But formerly it was not so. Let us take a well-known example of influence inhering in an inanimate substance, as this was understood in earlier times. Consider melancholy: black bile was not the cause of melancholy, it embodied, it was melancholy. The emotional life was porous here; it didn’t simply exist in an inner, mental space. Our vulnerability to the evil, the inwardly destructive, extended to more than just spirits that are malevolent. It went beyond them to things that have no wills, but are nevertheless redolent with the evil meanings.

See the contrast. A modern is feeling depressed, melancholy. He is told: it’s just your body chemistry, you’re hungry, or there is a hormone malfunction, or whatever. Straightway, he feels relieved. He can take a distance from this feeling, which is ipso facto declared not justified. Things don’t really have this meaning; it just feels this way, which is the result of a causal action utterly unrelated to the meanings of things. This step of disengagement depends on our modern mind/body distinction, and the relegation of the physical to being “just” a contingent cause of the psychic.

But a pre-modern may not be helped by learning that his mood comes from black bile, because this doesn’t permit a distancing. Black bile is melancholy. Now he just knows that he’s in the grips of the real thing.

Here is the contrast between the modern, bounded, buffered self and the porous self of the earlier enchanted world. As a bounded self I can see the boundary as a buffer, such that the things beyond don’t need to “get to me,” to use the contemporary expression. That’s the sense to my use of the term “buffered” here and in A Secular Age. This self can see itself as invulnerable, as master of the meanings of things for it.

These two descriptions get at, respectively, the two important facets of this contrast. First, the porous self is vulnerable: to spirits, demons, cosmic forces. And along with this go certain fears that can grip it in certain circumstances. The buffered self has been taken out of the world of this kind of fear. For instance, the kind of thing vividly portrayed in some of the paintings of Bosch.


And so the boundary between agents and forces is fuzzy in the enchanted world; and the boundary between mind and world is porous, as we see in the way that charged objects can influence us. I have just been referring to the moral influence of substances, like black bile. But a similar point can be made about the relation to spirits. The porousness of the boundary emerges here in various kinds of “possession”—all the way from a full taking over of the person, as with a medium, to various kinds of domination by or partial fusion with a spirit or God. Here again, the boundary between self and other is fuzzy, porous. And this has to be seen as a fact of experience, not a matter of “theory” or “belief.”

via 3 quarks

Improve Devlopment Lending to Build Resilience

Andrew Revkin writes in the New York Times about a recent world bank report that finds that the world bank is not lending in ways that invest in natural capital or resilience (The report is online at worldbank.org/oed). However, there is increasing awareness that that is a big problem.  Revkin writes that the report states that:

it was vital for the bank and its partners to intensify their focus on measurable environmental protection, given rising vulnerability to environmental risks and the increasing flow of financing for projects related to climate change.

“They need to begin to see the inextricable link between sustaining environment and reducing poverty,” Vinod Thomas, the director-general of the evaluation group, said in an interview. “It is clear now from the Amazon to India that if environmental sustainability is not raised as a priority then all bets are off.”

… Cheryl Gray, the director of the review group for the World Bank, said the lack of consistent internal tracking of the environmental facets of projects was an indicator of how much work needs to be done.

The World Bank Group approved its first set of common environmental standards in 2001, for the first time making environmental stewardship part of its core mission of reducing poverty.

But the new evaluation found a persistent lack of environmental focus in each step along the lending chain — from the priorities that shape development projects to the environmental standards and monitoring required in the field.

Revkin also asked the report’s authors about World Bank’s lack of investment to reduce or mitigate disaster damage. On Dot Earth Revkin quotes

Vinod Thomas, the director-general of the World Bank Group’s independent evaluation group, said a recent report on the Bank’s work on disasters found the same problem. “The bank has done well on the reconstruction side,” he told me. “But even where disasters recur, the preventive side gets neglected, for political reasons. Reconstruction gets photos.”

Things appear to be improving, though, Mr. Thomas said, partly because analysts for the bank and its lending partners are running the numbers on the economic benefits of resilience. “The rate of return on prevention can be 4 to 12 times the investment,” he said.

Often, he noted, there is no inconsistency between environmental conservation and resilience to disasters. He cited the example of maintaining coastal mangrove forests as a buffer against flooding. Communities bounded by mangroves persist while those exposed to the waves vanish. There’s no need to crunch numbers to figure that out.

Algal Bloom along the Coast of China

There has been a lot of news coverage of the large coastal algal bloom at China’s Olympic sailing site in Qingdao. The Chinese government claims the bloom is now under control.

NASA’s Earth Observatory has published some remote sensed images of the bloom from MODIS:
MODIS comparison of algal bloom

On June 28, 2008, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images of Qingdao and the bay of Jiaozhou Wan. The top image is a natural-color image similar to what a digital camera would photograph. The bottom image is a false-color image made from a combination of light visible to human eyes and infrared light our eyes cannot see. In this image, vegetation appears vibrant green, including the strips of algae floating in the bay and in the nearby coastal waters.

These images show the bay at the beginning of a local cleanup effort. (Daily images of the area are available from the MODIS Rapid Response Team.)

The long history of human-environment interactions in China

In a recent paper, JA Dearing and colleagues (J. Paleolimnology 40: 3-31) use paleolimnological techniques to explore the long-term history of the region around Erhai Lake in Yunnan Province. Lake sediment cores (which can explain catchment vegetation, flooding, soil erosion, sediment sources and metal workings) are complemented by independent regional climate time-series from speleothems, archaeological records of human habitation, and a detailed documented environmental history. The authors integrate these data to “provide a Holocene scale record of environmental change and human–environment interactions.”

They use these data to ask:

  • “How sensitive are the studied environmental system processes to climate and human drivers of change?”
  • “Can we observe long-term trajectories of socio-environmental interactions, or periods of social collapse and recovery?”

The authors identify a number of points at which there were major changes in the human interaction with the landscape, including ~9000 cal year BP, when sediment records show a ‘human-affected environment’, ~4800 cal year BP, when major deforestation for grazing led to the extirpation of forest species and some functional units, and ~2000 cal year BP at the introduction of paddy field irrigated farming, and ~1600 cal year BP at which point surface erosion and gullying were caused by increased exploitation of mountain slopes. They go on to suggest that these records indicate several major ‘periods’ in human-environment interactions in this area:

The earliest of these cases probably represents the dispersion of the population away from the established sedentary agricultural units on alluvial fans to the more inhospitable margins of the lake and the valleys. This perhaps signifies the end of the ‘nature dominated’ phase (Messerli et al.) where society could cause significant modification of the landscape but was still vulnerable to the main risks of drought and flood (though the evidence for climate determinism is weak). In contrast, the introduction of irrigation is associated with a trend of weakening monsoon intensity, increasing numbers of centennial scale dry phases, and population growth. It represents an agrarian society in transition, using technological innovation to raise carrying capacities without increasing greatly the vulnerability to drought or flood. The third period is linked to natural population growth, inward migration and metal extraction brought about by the rise of Nanzhao/Dali as a major center”

The authors then ask at what stage of the adaptive cycle the modern Erhai socio-ecological system exists:

At Erhai, the slow processes of weathering and soil accumulation, in association with vegetation cover held fairly constant by a benign early-mid Holocene climate, were interrupted by fast processes of anthropogenic modification of vegetation. For many centuries, this concatenation of ‘slow–long’ and ‘fast–short’ processes led to a resilient land use-soil system (cf. Gunderson and Holling). But increasing perturbations led to system failure, and we can observe that the late Ming environmental crisis represents the end of the last release phase. Thus, the modern landscape may be approaching a conservation phase (K) characterised by minimum resilience.

Dearing and colleagues explore the meanings of this research for current sustainability and conclude that the main threat to the region is high magnitude-low frequency flooding of the agricultural plain and low terraces, which is exacerbated by:

  1. continued use of high altitude and steep slopes for grazing and cultivation that generate high runoff from unprotected slopes and maintain active gully systems, particularly in the northern basins;
  2. reduction or poor maintenance of paddy field systems, engineered flood defences, river channels and terraces; [and]
  3. increased intensities of the summer monsoon.

This fascinating paper is an excellent example of how historical data sources can be integrated to provide a new perspective on social and ecological change over long periods of time.

Intensive agriculture’s ecological surprises

regime shift cartoon from TREE paperRhitu Chatterjee has written a news article Intensive agriculture’s ecological surprises in Environ. Sci. Technol. (July 2, 2008) about a paper Agricultural modifications of hydrological flows create ecological surprises (doi:10.1016/j.tree.2007.11.011) that Line Gordon, Elena Bennett and I published in TREE earlier this year.  From the article:

Previous reports have outlined ways that agriculture alters ecosystems by changing hydrology. The new study, led by Line Gordon of the Stockholm Resilience Centre, classifies these changes, or “regime shifts”, from one ecological state to another into three categories: through agriculture’s interaction with aquatic systems, as in the case of nutrient runoff; in the interactions of plants and soil, as in Australia’s salinity issues; or by influencing atmospheric processes such as evaporation and loss of water by plants (transpiration), as in the rapid drying of the Sahel in sub-Saharan Africa.

The authors “make it clear that agricultural practices result in these regime changes by altering water quality and available quantity,” says Deborah Bossio, a water expert at Sri Lanka’s International Water Management Institute.

“The increasing demand for food, feed, and fuel is placing enormous pressure on the world’s arable lands,” says ecologist Simon Donner of the University of British Columbia (Canada). Awareness of agriculture-related environmental problems has been growing in the past few years, says Bossio. But some of that awareness has been lost in the “current frenzy of global food crisis shifting the balance back toward increasing yield.”

Be it the desertification of the Sahel, the dead zone in the Gulf of Mexico, or the increasing salinity in Australia, countries all over the world are already trying to solve some of these problems. But the fixes are not quick, and the results of their efforts are often hard to predict.

Given the difficult-to-repair, or even irreparable, nature of the problems, agricultural systems must be made resilient to change, the authors argue. The new study adds to “the increasing chorus of voices” that emphasizes the need to avoid irreversible ecological damage, says Donner.

However, the science of understanding ecological regime shifts is still young, which makes it difficult to predict when the changes will manifest. “The tipping points aren’t very well understood at all,” says Bossio. Researchers first need to understand the various biophysical factors involved and how those factors interact with one another, the authors say.

For now, ecologists, agronomists, and regulators can acknowledge the problem and encourage certain practices to minimize the likelihood of some of these water-related changes. People should begin by viewing agriculture not simply as a source of food but also as a source of ecosystem services like water and biodiversity, says coauthor Garry Peterson of McGill University (Canada). For example, Australian farmers are adopting mosaic farming, which involves combining annual crops, pastures, and perennial trees into the same landscape. This restores biodiversity and hydrology and prevents the rise of salinity.

“If we don’t heed the management lessons from the past, many of which are listed in the paper, we are bound to face many more ecological surprises in the coming decades,” says Donner.

A view of the RA’s research from Cultural Ecology

Lesley Head in her article Cultural ecology: the problematic human and the terms of engagement (Prog Hum Geogr 2007 31:837 DOI: 10.1177/0309132507080625) discusses the current ‘terms of engagement’ between the cultural and the ecological. She writes:

Although ecology would in theory claim a holistic remit that includes humans as part of earth’s biota, its usual practice has reinforced humans as different (Haila, 1999; 2000), with anthropologists more likely to consider humans within an explicitly biogeographical perspective (Terrell, 2006). A recent contents analysis of mainstream conservation biology journals shows a continued focus on relatively ‘intact’ habitats, with few studies ‘conducted entirely in areas under intense human pressure (agricultural landscapes, coastal and urban areas)’ (Fazey et al., 2005: 70).

Changes can be seen as part of the so-called ‘new ecology’, or ‘non-equilibrium’ ecology, in which change and contingency rather than stability is the norm, and ‘disturbances’ such as fire and human actions are understood as internal to the system rather than external.

She describes the Resilience Alliance as follows:

An integrative brand of ecology is practised by the Resilience Alliance, published mostly in their journal Ecology and Society. The Alliance works through interdisciplinary collaborations to explore the dynamics of social-ecological systems, using key concepts such as resilience, adaptability and transformability. The approach is avowedly integrative of ‘ecology’ and ‘society’ (eg, Gunderson et al., 2005) and acknowledges the pervasiveness of humans in ecosystems (Elmqvist et al., 2003; Folke et al., 2004; Trosper, 2005). Yet the assumption of separate systems remains curiously unexamined in this work. Further there is conceptual slippage between treating humans as different, and ultimately absorbing all human activities as part of ecosystems.

China’s blue-green Olympics

Coastal eutrophication is an increasing problem in China, due to their massive use of fertilizers.

china algae

Large blooms of blooms of blue-green algae are clogging parts of the sailing course at one of China’s Olympic sites in Quindoa. Algae are being manually removed by a thousand boats and thousands of people at (AFP, AP, Guardian, NYT, and photos from Xinmin). Bloomberg news writes:

Warmer waters, increased rainfall and high levels of nutrients in the ocean brought about the algae explosion along vast stretches of the 800-kilometer (500-mile) coastline, according to the Qingdao Weather Bureau.

Qingdao, located 830 kilometers from Beijing, is mobilizing more than 1,000 fishing boats to scoop up the algae and contain the outbreak, Wang said.

“We can only haul the blue-green algae manually and we’re doing all we can with our arms full and by the boat-load,” said Wang, a sailing spokesman for the Beijing Games organizing committee. “All you can see is fishing boats along the coast.”

via Great Beyond

update: BBC video of army algae removal