Showing posts with label resilience. Show all posts

Britain Realises Limits 40 Years Too Late

We don't need more reports

I find it amazing and tragic how organisations and governments keep issuing reports that confirm the dire situation humanity is in with regards to depleting resources, climate change and economic contraction. Latest is a report Limits Revisited: a review of the limits to growth debate commissioned on behalf of British MPs written by Tim Jackson (author of Prosperity without Growth, 2009) that concludes we are headed for “an eventual collapse of production and living standards” in the next few decades, given business-as-usual. 

The report makes for some interesting reading and refers to some very important studies but offers nothing new in terms of scientific insight. It simply restates what previous studies have already confirmed, the global economy is running into resource limits. Going forward we should not expect resource fuelled economic growth but rather contraction.

As for climate change, we are pretty much doomed to failure, for a 66% chance of avoiding 1.5°C warming (the “safe limit”) the world only has 6 years to decarbonise the entire economy. That seems impossible given that fossil fuels cover 80% of global energy consumption and it takes many decades to replace all the current infrastructure.

40 years of inaction

It has been more than 40 years since the Club of Rome presented the Limits to Growth report but absolutely nothing has been done to steer society onto a new “greener” path. Resource depletion and emissions have continued unabated. 

Living sustainably is now impossible and instead we have to focus on bolstering our resilience to coming shocks and disturbances. While I do think we should do everything in our power (e.g. limit the destruction of ecosystems, transition from fossil fuels to renewables, go from global to local economies) to change the way we live on this planet we also have to realise that many so called “solutions” are no longer viable because we waited too long. 

We could have stabilised our population at 3.84 billion in 1972, leaving more space for ecosystems and a larger per capita share of resources for people. We could have replaced much of the infrastructure needed to make a transition to alternative fuel sources by now. But we didn’t do those things. Now, instead, nature is forcing us to live within the planet's limits through the usual mechanisms (e.g. epidemics, starvation, drought). 

The war torn Middle East (e.g. Syria, Iraq, Yemen) is a clear case of overpopulation, depleting resources (freshwater, oil) interacting with climate change (megadrought) and conflict over the remaining resources. These states were fragile to begin with (e.g. high inequality, lack of trust, lack of infrastructure) so even small perturbations were enough to push them over the edge. 

But even countries with a higher degree of resilience from the outset have started crumbling under the pressure of entropy in form of deflation (e.g. Greece, Italy, Japan). The downward trend is global. The collapse process, i.e. reduction in socioeconomic complexity, is already underway.

Zero self-sufficency

Slitkalar på Fitn, July 1908. Nordiska Museet

Hard to put a number of food security

Politicians, journalists and pundits have for many years used the number of 50% regarding Sweden’s self-sufficiency in agriculture. A new investigation from the agricultural magazine ATL, however, shows that this number without a doubt is incorrect. A protracted crisis with blockaded imports would result in a catastrophe.

Sweden has made itself vulnerable to shocks and disturbances in international trade by outsourcing production of basic commodities and relying on imports. The precarious global geopolitical situation have brought the question of self-sufficiency back on the political agenda. 

In 2002 the last reserves and warehouses with foodstuffs in case of a national emergency were dismantled. Ten years later we read in a report from LRF that about half of all the food Swedes consume comes from imports. People have therefore assumed that Sweden has a self-sufficiency level of 50%. 

But the relationship between imported and domestically produced food only shows a theoretical potential. Current stocks would only last for a maximum of 3 weeks if there is a true crisis. There are no warehouses with food and chemicals for water purification and our largest packaging plant was shut down last year, according to Therese Frisell at the National Food Agency. 

In other words, Sweden is not self-sufficient at all. According to Frisell our capacity is at zero. This is due to that Sweden is heavily reliant on imports for industrial agriculture, for example oil, fertilizers and protein for animal feed.

Researchers at the Swedish University of Agricultural Sciences together with the Swedish Civil Contingencies Agency claim that farmers can produce food in a time of crisis but that this would require a large scale transition. Farmers would have to rely less on machines, switch from cereals to root crop and from pigs and chickens to uncultivated pasture meat. Farmers can not do it alone, they would need extra manpower. And if the transition fails, Sweden would likely not be able to support its growing population. People would starve.

Coping with Extremes - General Resilience

Credit: John McColgan at USDA

General resilience

We need to increase society’s general resilience to shocks and disturbances. With that I mean that we need to increase communities capacity to adapt or transform in response to unfamiliar, unexpected and extreme shocks.

Extreme events have long lasting effects on society and need to be managed properly or major losses will be inevitable. Megadroughts in Syria and California, the rapid spread of wildfires in Indonesia and Canada or massive flooding in the UK and Denmark are just some examples of extreme events that we will have to get used to due to climate change and resource depletion. Other shocks may come from a fragile financial system in form of massive unemployment, from a dysfunctional political system that leads to a revolution or from mass migrations due to failed states. 

Extreme events are notoriously difficult to predict because probabilities are hard to measure and uncertainties are high. That's why it's so important to take proactive measures to strengthen a society's general resilience to such events. This requires a complex systems perspective and understanding of human-nature interactions. Strengthening general resilience includes:

1. Diversity and redundancy

The important thing with diversity is that it can offer both functional diversity and response diversity. In other words, a diverse system can offer many different functions but also a diversity of responses to disturbances so that critical functions are maintained even if some parts of the system fail. For example, in a marine ecosystem some fish may carry out similar functions (e.g. grazing on corals) so that if one species disappears there is another that can keep on carry out the critical function for the benefit of the overall ecosystem. Similarly if a bridge or air plane has many backup safety mechanisms that all perform the same function (i.e.redundancy) the risk of a collapse or crash is much lower. This is also applicable to the economy where a diversity of many small companies with similar functions contributes to stability in case some should default. That's why it’s very unhealthy to have a few but major banks that can crash the entire system. It is also a reason why societies with high income inequality do poorly, because all the wealth has been concentrated at the top which creates instability and risk of revolution. Heterogeneous landscapes with high biodiversity have higher resilience to extreme events and so monocultures is a really bad idea since it increases vulnerability to massive crop failure, loss of pollinators, and spread of pests.

2. Modularity and Decentralisation


Connectivity can both be a good and a bad thing depending on degree. In today’s society we most often have a high degree of connectivity, international interdependence, that makes us vulnerable to the rapid spread of extreme events or cascading effects. Modularity helps contain disturbances to specific regions/sectors and lowers the risk of contagion. The more self-sufficient communities can be the better. Especially for the provision of essential goods and services such as water, food, energy and health care. Decentralised systems of decision making are also more flexible and can respond more rapidly to a crisis than any central control system ever can.


3. Reserves

As was common sense only two generations ago having reserves, no matter if it’s food or skills, contribute to a faster recovery after a disturbance. Just-in-time logistics make communities vulnerable to sudden shocks or major disturbances. So does a reliance on finite resources like oil. Keeping strategic reserves while improving local supply or transitioning to renewables is increasingly important. We know that plants and animals that survive a disturbance are critical to ecological recovery from e.g. extraordinary fires or volcanic eruptions. Keeping seed banks is also increasingly important as ever more species are lost. Social memory is another important aspect that can help push for a faster recovery.


4. Manage feedbacks

To the extent it's possible society has to keep an eye on critical feedbacks and try to manage them so the system doesn’t cross thresholds that trigger harmful outcomes. For example, reducing waste and pollution and increasing recycling and use of biodegradable materials that can create circular resource flows that restore balance. Applying a systems perspective is crucial to this aspect of general resilience. Tighter feedbacks between e.g. producer and consumer makes feedbacks easier to manage. Local economies with proper incentives or sanctions on how to manage common pool resources can lead to more sustainable communities.

5. Monitoring

Transparency and up to date information about status and trends of ecosystem and social health is essential to maintain resilience over the long-term. Complex systems are not static but ever changing and so to provide adaptive management one needs to constantly be learning and collecting information to ensure stability of the system. Citizen science and decentralised monitoring is much more effective and low cost than large-scale operations by central authorities. Traditional knowledge about changes over time is invaluable. Indicators can also help provide early warnings of potential tipping points.

6. Trust and reciprocity

Trust is the basic glue that holds society together and it’s fundamental to everyday social and economic interactions. It is easier to maintain trust when groups are small and people know each other but harder in large communities and cities. When trust is high people are more willing to cooperate and transaction costs are low. This is yet another reason why decentralisation of decision-making is important. Today we live in a society where basic trust between actors has been replaced with money, but that monetary system is inherently unstable and increasingly untrustworthy. Trust takes a long time to build up but can be erased rapidly. When trust in a society is low transaction costs increase as fewer people are willing to cooperate or trade. The erosion of social trust is very damaging to a society that in the end may lead to bank runs, social unrest or even conflict.

Myths and Facts about Organic Farming

Media storm about organic farming


There has been a media storm lately regarding the productivity of organic farming compared to conventional farming methods in the two major Swedish daily newspapers. The debate has mostly been between different groups of scientists having a “pro” conventional farming attitude versus scientist being “pro” organic farming. It all started with a group of scientist from the Swedish University of Agricultural Sciences (SLU) promoting a new book in which they claim that ecological farming on a massive scale would lead to starvation because of lower yields. In response a number of other scientist argued that these type of statements where unscientific, emotional and cherry picking of statistic without providing a proper context (for more on the content of the debates see DN and SVD). So I did some digging and the following post will bust some myths and present some facts about organic farming. Before I go on to some of the statements posed in the article, I will just briefly give some context to the challenges we are facing globally regarding food production.

The challenge of sustainable food production


Today there are 7.2 billion people on the planet. In a world committed to feeding a population of 9.6 billion by 2050 (UN, 2013) we face unprecedented risks and challenges. As we know, we are currently putting extreme pressure on the Earth’s climate and ecosystems. There are so many of us now that we are disrupting the whole planet’s nutrient and energy flows and degrading ecosystems worldwide (MEA, 2005; Rockström et al. 2009). Food production is central to solving our environmental dilemma. Over 35% of Earth’s land surface is devoted to agriculture which gobbles up 70% of global freshwater use and contributes with 30% of global greenhouse gas emissions (Foley et al., 2011). Climate change (fig1) and topsoil erosion (fig2), interacting with increasingly uneven access to declining oil, water, and phosphorus supplies (Sverdrup et al. 2013) will greatly exacerbate the unpredictability of agricultural production. Yet an estimated 33% of global food production is wasted (FAO, 2011). This is a depressing fact of how unsustainable our current food system is. Globally, we need to reduce waste and make food more accessible to vulnerable people at the same time as we raise farmers livelihoods. And farming systems need to go from carbon source to carbon sink, building organic matter in soils, raising productivity and resilience to droughts. Sweden is in a unique position to meet these challenges because we have a small population relative to land area and crop yields will increase as climate warms (not accounting for potential increase in floods etc). 


Climate change projected impacts on crop yields 2050 (3° C World). Source: WRI (2013)




The area of agricultural topsoil of the Earth peaked in 2005. Soils form very
slowly, of the order of millimetres per 100 years. Source: Sverdrup et al. 2013


Busting Myths 

Myth 1. Organic farming leads to starvation
This statement is just plain wrong. People are not starving due to lack of food production, there is enough food (enough for 12-14 billion people). People starve because of poverty, lack of access to food, infrastructure and trade policy. 1 billion people suffer from starvation and another billion is malnourished, despite the fact that 70% of these people are themselves small farmers. The conventional food system is broken. In a global agricultural assessment on behalf of the UN and the World Bank, 400 experts came to the conclusion that new food production practices based on ecological principles is the future (IAASTD, 2011). Another study from the UN with the title “Wake up before it is too late” (UNCTAD, 2013) concludes that the world needs a paradigm shift from a “green revolution” to an “ecological intensification” approach, from todays conventional, monoculture-based and high external input dependent industrial production towards mosaics of sustainable, regenerative production systems that also improve the productivity of small-scale farmers.

Myth 2. Organic farming results in half the amount of food
Incorrect. Badgley et al. (2006) compared average yield ratio (organic:non-organic) and found that organic methods could produce enough food on a global per capita basis to sustain the global population, and potentially more. They further concluded that leguminous cover crops could fix enough nitrogen to replace the amount of synthetic fertilizers in use. A study in Nature (2012) found that organic yields tend to be lower than conventional yields but that this is highly contextual. The authors state that under certain conditions (i.e. good management practices, particular crop types and growing conditions) organic systems can nearly match conventional yields. Good management practices include for example: composting, no tilling, and rainwater harvesting. In Sweden, conventional farms may give a higher yield but this is not the case in developing countries.

Myth 3. Organic farming cannot provide for a growing population
As shown above this is not true, there is the potential but a major problem is that 70% of agricultural lands are used to raise cattle (FAO, 2006) and 30% of produced food is wasted. If we really wanted to limit our impact on the environment and world hunger we should eat less meat and stop throwing away perfectly good food. 

Myth 4. Organic farming is worse for the environment

Wrong! I cannot believe these people are scientists. Organic farming when applied with sound agro-ecological principles (such as crop rotation, keeping livestock and crops on one farm to supply for fertilizers, keeping patches of vegetation and trees for animals to migrate e.g. pollination bees) is good for the environment, animal welfare and humans.  According to Livsmedelsverket, ecological farming replaces chemical fertilizers and pesticides with other agricultural methods (e.g. livestock manure). Feed for livestock is mainly produced on the farm and the use of drugs e.g. antibiotics are limited. Animals also get more time to pasture and genetically modified organisms (GMOs) are not allowed. Jordbruksverket (2012) estimate large benefits with lower use of chemicals and increased living space for wild plants and animals etc.  



Illustration from Granstedt (2013)

A look at Swedish Agriculture and Food Consumption

In 2010, Sweden had 81 ha/holding of organic farming, above 10% of utilized agricultural area (European Commission, 2013). Of current total cropland about 75% is considered to have high yields, resulting in 800 000 hectares with potential for improvements (LRF, 2012). Most greenhouse gas emissions from agriculture comes Nitrus Oxide (N2O) emitted through the use of synthetic fertilizers. Nitrous oxide is also emitted during the breakdown of nitrogen in livestock manure. Methane (CH4) is the second most prevalent greenhouse gas emitted from agriculture. Domestic livestock such as cattle and sheep produce large amounts of CH4 as part of their normal digestive process. Also, when animals' manure is stored or managed CH4 is produced. The third most common greenhouse gas emitted from agriculture is carbon dioxide (CO2) from cultivated fertile soils (see chart below). Conventional heavy soil tillage influence CO2 emissions because it accelerates the loss of soil organic matter. See chart below for overview of emissions from agriculture. In Swedish agriculture, crops only use 40% of the supplied Nitrogen and 65% of the supplied Phosphorus and only a small fraction are recycled into croplands. Here we could make improvements.

But what we eat also matters. Sweden imports 50% of all food consumed, compared to the 30% in 1950 (LRF, 2012). Food consumption and waste amounts to 25% of Swedish household greenhouse gas emissions (Naturvårdsverket, 2008). What we eat has to change if we want to meet our climate goals according to one report (SLU, 2012). Below is a chart showing greenhouse gas emissions from various protein sources.
Data from SLU (2012)
We can do more but today it often comes down to producers and consumers. Farming is not a lucrative business and many farmers, especially small and medium sized, rely on government subsidies to make a living. But Sweden is in a unique position geographically with increases in yields as climate becomes warmer, compared to decreases in yields close to the equator and the south. At the same time loss in yields in many of the large grain areas of the world will likely make food overall more expensive, so relying on imports to such a large extent is perhaps not a sound food security strategy. We need to bare this in mind when we make future plans for our agricultural sector.

Conclusion

By giving a oversimplified and many times incorrect picture of organic farming the SLU authors seems to have a vested interest in conventional farming or simply provoking debate to gain attention for their new book. But organic farming has become a topic of scientific controversy it seems. It need not be, we need all the improvements we can get. For example, agriculture and food production is still largely dependent on oil for machinery and transportation. It will be difficult to replace that input. Organic food production is no panacea for more sustainable food production everywhere. Context matters. But I am glad that we are having a debate about what type of farming we want to promote. I also think we have an obligation towards farmers here and around the globe to provide them with support and sufficient funds for sustainable practices since our very future depend on them growing our food. According to the UN there is a farmer suicide crisis worldwide. The impact of an industrial approach to boosting crop yields has stripped many small farmers of their self-sufficiency and thrown them into despair. Financial pressures, livestock disease, poor harvest, climate change, government policies and legislation can devastate farmers. We may run the risk of losing valuable knowledge skills, at a time when we need them the most.