All posts by Garry Peterson

Prof. of Environmental science at Stockholm Resilience Centre at Stockholm University in Sweden.

Ecological architecture

Renzo Piano’s California Academy of Sciences Blooms and Grows, Balancing Man and Nature

Mr. Piano’s vision avoids arrogance. The ethereality of the academy’s structure suggests a form of reparations for the great harm humans have done to the natural world. It is best to tread lightly in moving forward, he seems to say. This is not a way of avoiding hard truths; he means to shake us out of our indolence.

See a slide show of the Academy and from Flickr photos.

Also, from Pruned:

The New York Times visits Alan Berger and gets a tour of his reclamation project in the Pontine Marshes. Says Berger, “The solution has to be as artificial as the place. We are trying to invent an ecosystem in the midst of an entirely engineered, polluted landscape.” Much earlier, The New York Times tagged along with the landscape architect and his class to a severely polluted mining area in Colorado.

Decline in salmon causes decline in cultural ecosystem services

Agriculture increases the supply of food supplied by an ecosystem, but often decreases its ability to supply other services.  The same appears to be true for salmon aquaculture.  In the Toronto Globe and Mail, Vancouver journalist Mark Hume reports Declining salmon runs blamed for wilderness tourism slump:

All along the B.C. Coast, wilderness tourism operators who run bear-viewing, whale-watching and sport-fishing resorts are reporting tough times because of declining salmon runs.

But the biggest impact may be occurring in the Broughton Archipelago, where Mr. MacKay operates, and where pink salmon runs have all but vanished, sending a shock wave through the region’s ecosystem.

“Some of the northern pods are just not here,” Mr. MacKay said yesterday. “And we’ve had three occasions [this summer] when we did not see any orcas at all. That’s pretty weird.”

He said northern killer whales visit the area during the summer months, collecting in big social gatherings where breeding takes place.

“When they get together like that it’s called Super Pod Day, and we will see over 100 dorsal fins out there at a time,” Mr. MacKay said. “That didn’t happen this year, for the first time since we’ve been collecting data, which is almost 30 years.”

Mr. MacKay said it’s not coincidental that the whales have vanished along with the salmon.

“It’s pretty simple. …What do you think these orcas eat?” he said.

Surveys by the Department of Fisheries and Oceans indicate pink salmon stocks have fallen to extremely low levels in the Broughton Archipelago. In Glendale Creek, a key indicator stream, there have been only 19,000 spawners counted this year, compared with 264,000 last year.

Pink salmon, which usually spawn in prodigious numbers, are a keystone species on the West Coast. Chinook salmon, the mainstay of the orca diet, feed on young pinks, while grizzly and black bears depend on spawning adult pink salmon to bulk up for hibernation.

Brian Gunn, president of the Wilderness Tourism Association, said the collapse of salmon stocks is threatening the survival of ecotourism businesses.

“The bear-viewing businesses, the whale-watching operations, they built up a lot of equity showing people these wild animals. Now the fish aren’t there and they are seeing their equity drain away. …If the salmon go, so does the wildlife, and so does the business.”

Mr. Gunn blamed the fish-farming business, saying a heavy concentration of net pens in the Broughton Archipelago has created sea-lice epidemics which kill young salmon.

Financial resilience – Taleb and Mandelbrot reflect on crisis

Nassim “Black Swan” Taleb writes on Edge about an unwillingness or consider and remember extreme events leads to financial disaster in The Fourth Quadrant: A map of the limits of statistics.

Statistical and applied probabilistic knowledge is the core of knowledge; statistics is what tells you if something is true, false, or merely anecdotal; it is the “logic of science”; it is the instrument of risk-taking; it is the applied tools of epistemology; you can’t be a modern intellectual and not think probabilistically—but… let’s not be suckers. The problem is much more complicated than it seems to the casual, mechanistic user who picked it up in graduate school. Statistics can fool you. In fact it is fooling your government right now. It can even bankrupt the system (let’s face it: use of probabilistic methods for the estimation of risks did just blow up the banking system).

The current subprime crisis has been doing wonders for the reception of any ideas about probability-driven claims in science, particularly in social science, economics, and “econometrics” (quantitative economics). Clearly, with current International Monetary Fund estimates of the costs of the 2007-2008 subprime crisis, the banking system seems to have lost more on risk taking (from the failures of quantitative risk management) than every penny banks ever earned taking risks. But it was easy to see from the past that the pilot did not have the qualifications to fly the plane and was using the wrong navigation tools: The same happened in 1983 with money center banks losing cumulatively every penny ever made, and in 1991-1992 when the Savings and Loans industry became history.

It appears that financial institutions earn money on transactions (say fees on your mother-in-law’s checking account) and lose everything taking risks they don’t understand. I want this to stop, and stop now— the current patching by the banking establishment worldwide is akin to using the same doctor to cure the patient when the doctor has a track record of systematically killing them. And this is not limited to banking—I generalize to an entire class of random variables that do not have the structure we thing they have, in which we can be suckers.

And we are beyond suckers: not only, for socio-economic and other nonlinear, complicated variables, we are riding in a bus driven a blindfolded driver, but we refuse to acknowledge it in spite of the evidence, which to me is a pathological problem with academia. After 1998, when a “Nobel-crowned” collection of people (and the crème de la crème of the financial economics establishment) blew up Long Term Capital Management, a hedge fund, because the “scientific” methods they used misestimated the role of the rare event, such methodologies and such claims on understanding risks of rare events should have been discredited. Yet the Fed helped their bailout and exposure to rare events (and model error) patently increased exponentially (as we can see from banks’ swelling portfolios of derivatives that we do not understand).

Are we using models of uncertainty to produce certainties?

…So the good news is that we can identify where the danger zone is located, which I call “the fourth quadrant”, and show it on a map with more or less clear boundaries. A map is a useful thing because you know where you are safe and where your knowledge is questionable. So I drew for the Edge readers a tableau showing the boundaries where statistics works well and where it is questionable or unreliable. Now once you identify where the danger zone is, where your knowledge is no longer valid, you can easily make some policy rules: how to conduct yourself in that fourth quadrant; what to avoid.

Now it lets see where the traps are:

First Quadrant: Simple binary decisions, in Mediocristan: Statistics does wonders. These situations are, unfortunately, more common in academia, laboratories, and games than real life—what I call the “ludic fallacy”. In other words, these are the situations in casinos, games, dice, and we tend to study them because we are successful in modeling them.

Second Quadrant: Simple decisions, in Extremistan: some well known problem studied in the literature. Except of course that there are not many simple decisions in Extremistan.

Third Quadrant: Complex decisions in Mediocristan: Statistical methods work surprisingly well.

Fourth Quadrant: Complex decisions in Extremistan: Welcome to the Black Swan domain. Here is where your limits are. Do not base your decisions on statistically based claims. Or, alternatively, try to move your exposure type to make it third-quadrant style (“clipping tails”).

Below I’ve redrawn Taleb’s figure.  His article provides a fuller picture.Taleb's quadrants

Similarly, Scientific American reprints Benoit Mandelbrot’s 1999  How Fractals Can Explain What’s Wrong with Wall Street:

Individual investors and professional stock and currency traders know better than ever that prices quoted in any financial market often change with heart-stopping swiftness. Fortunes are made and lost in sudden bursts of activity when the market seems to speed up and the volatility soars. Last September, for instance, the stock for Alcatel, a French telecommunications equipment manufacturer, dropped about 40 percent one day and fell another 6 percent over the next few days. In a reversal, the stock shot up 10 percent on the fourth day.

The classical financial models used for most of this century predict that such precipitous events should never happen. A cornerstone of finance is modern portfolio theory, which tries to maximize returns for a given level of risk. The mathematics underlying portfolio theory handles extreme situations with benign neglect: it regards large market shifts as too unlikely to matter or as impossible to take into account. It is true that portfolio theory may account for what occurs 95 percent of the time in the market. But the picture it presents does not reflect reality, if one agrees that major events are part of the remaining 5 percent. An inescapable analogy is that of a sailor at sea. If the weather is moderate 95 percent of the time, can the mariner afford to ignore the possibility of a typhoon?

A climate change and development slide show

The 2007/2008 UN Human Development Report Fighting climate change: Human solidarity in a divided world focuses on the inequalities of climate change, as well as providing its usual indicators of human development.

According to the report, in 2007 the most developed countries are Iceland, Norway, Australia, Canada, and Ireland while the least developed (of the countries ranked) are Mali, Niger, Guinea-Bissau, Burkina Faso, and Sierra Leone).

The high developed countries are responsible most of the accumulation of greenhouse gases driving climate change, while the low development countries are most vulnerable to the impacts of climate change (see also previous post on climate inequalities).

Now the report has inspired an exhibit at the UN – One planet, one chance. Magnum photos produced a video for the exhibit, which uses gripping photos to describes the basic inequalities of climate change. The video is below the break.

Continue reading

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.

PhD Position at Stockholm Resilience Centre

Line Gordon and I are looking for a PhD student to be part of an international research project that will examine social-ecological resilience of Arctic ecosystems to changes in hydrological flows.

The PhD position is at Stockholm University (Sweden) in Physical Geography, but the student will be based at both Physical Geography and the Stockholm Resilience Centre.

The PhD student will develop a conceptual framework and empirical methods to investigate how globally driven hydrological changes could alter the social-ecological resilience of Arctic ecosystems. This research includes reviewing evidence for possible hydrologically triggered abrupt threshold changes or regime shifts in Arctic ecosystems, the synthesis of existing social, ecological and physical data to map social-ecological resilience in the Arctic, and the construction of minimal social-ecological models of Arctic regime shifts.

Qualifications: The successful candidate should be enthusiastic about conducting trans-disciplinary studies and is expected to have a background in physical geography and/or ecology and have substantial knowledge of global environmental change. Knowledge of resilience theory, hydrology, and the Arctic are desired. A good command of English is required and experience in geographical information systems (GIS). Experience in modeling, GIS, remote sensing, geostatistics and data fusion are merits.

This PhD project is part of a larger research project on Pan-Arctic ice-water-biogeochemical system responses and social-ecological resilience effects in a warming climate, which is coordinated from the Department of Physical Geography and Quaternary Geology and involves collaborators from the Bert Bolin Centre for Climate Research and the Stockholm Resilience Centre at Stockholm University as well as international collaborators.

The proposed starting date is January 1, 2009 (although this can be negotiated).  Applications are due by Oct 31th, 2008.

The official job ad and details are here.

Furthermore, Stockholm University is particularly exciting places to work on resilience and water.  The Stockholm Resilience Centre hosts a world leading research group on social-ecological resilience, and Physical Geography and the Resilience Centre both contain world leading water researchers.  The student will be part of a small group of PhD students linked to this project and will have the opportunity to work with researchers from both groups.

This project will build upon previous work that Line Gordon and I have done on mapping hydrological flows, resilience and ecological regime shifts.  Some of our papers that this work will build on include:

  1. Gordon LJ, Peterson GD, Bennett EB.  2008.  Agricultural modifications of hydrological flows create ecological surprises. Trends in Ecology and Evolution.  23(4):211-219.
  2. Chapin et al.  2006.  Policy strategies to address sustainability of Alaskan boreal forests in response to a directionally changing climate.  Proceedings National Academy of Sciences, USA 103:16637–16643.
  3. Gordon L., et al. (2005) Human modification of global water vapor flows from the land surface. Proceedings National Academy of Sciences, USA 102: 7612-7617.
  4. Bennett, EM, GS Cumming, GD Peterson. 2005. A systems model approach to determining resilience surrogates for case studies, Ecosystems 8(8): 945-957.
  5. Peterson, G.D., S. Carpenter, and W.A. Brock. 2003. Model uncertainity and the management of multi-state ecosystems: a rational route to collapse. Ecology. 84(6) 1403-1411.
  6. Peterson, G.D. 2002. Estimating resilience across landscapes. Conservation Ecology 6(1): 17.
  7. Peterson, G., C. R. Allen, and C. S. Holling. 1998. Ecological resilience, biodiversity and scale. Ecosystems 1(1): 6-18.

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.”

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