what is resilience?

this text is an extract from the 'The Transition Handbook' of Rob Hopkins

In ecology, the term resilience refers to an ecosystem's ability to roll with external shocks and attempted enforced change. Walker et al. define it thus:

'Resilience is the capacity of a system to absorb disturbance and reorganise while undergoing change, so as to still retain essentially the same function, structure, identity and feedbacks.'


In the context of communities and settlements, it refers to their ability to not collapse at first sight of oil or food shortages, and to their ability to respond with adaptability to disturbance.


The concept of resilience goes far beyond the better-known concept of sustainability. A community might, for example, campaign for plastic recycling, where all of its industrial and domestic plastic waste is collected for recycling. While almost certainly being better for the environment as a whole, it adds almost no resilience to the community. Perhaps a better solution (alongside the obvious one of producing less plastic waste), would be to develop other uses for waste plastic requiring minimal processing, perhaps producing tightly compressed building blocks or an insulating product for local use. Simply collecting it and sending it away doesn't leave the community in a stronger position, nor is it more able to respond creatively to change and shock. The same is true of some of the strategies put forward by climate change campaigns that don't take peak oil into consideration. Planting trees to create community woodlands may lock up carbon (though the science is still divided on this) and be good for biodiversity, but does little to build resilience, whereas the planting of well-designed agro-forestry/food forest plantings does. The Millennium Forest initiative missed huge opportunity to put in place a key resource: we could by now have food forests up and down the country starting to bear fruit.


Economist David Fleming argues that the benefits for a community with enhanced resilience will be that:


* if one part is destroyed, the shock will not ripple through the whole system

* there is wide diversity of character and solutions developed creatively in

  response to local circumstances

* it can meet needs despite the substantial absence of travel and transport

* the other big infrastructures and bureaucracies of the intermediate economy

  are replaced by fit-for-purpose local alternatives at drastically reduced cost


Increased resilience and a stronger local economy do not mean that we put a fence up around our towns and cities and refuse to allow anything in or out. It is not a rejection of commerce or somehow a return to a rose-tined version of some imagined past. What it does mean is being more prepared for a leaner future, more self-reliant, and prioritising the local over the imported.


the three ingredients of a resilient system


According to studies of what makes ecosystems resilient, there are three features that are central to a system's ability to reorganise itself following shocks: They are:


* diversity

* modularity

* tightness of feedback



Diversity relates to the number of elements that comprise a particular system, be they people, species, businesses, institutions or sources of food. The resilience of a system comes not only from the number of the species that make up that diversity, but also from the number of connections between them. Diversity also refers to the diversity of functions in our settlement (rather than just relying on one - say, tourism or mining) and a diversity of potential responses to challenges, leading to a greater flexibility. Diversity of land use - farms, market gardens, aquaculture, forest gardens, nut tree plantings, and so on -  are key to the resilience of settlement, and their erosion in recent years has paralleled the rise of monocultures, which are by definition absence of diversity.

Another meaning of diversity is that of diversity between systems. The exact set of solutions that will work in one place will not necessarily work in other places: each community will assemble its own solutions, responses and tools. This matters for two reasons. Firstly because of it makes top-down approaches almost redundant, as those at the top lack the knowledge of local conditions and how to respond to them. Secondly, because resilience-building is about working on small changes to lots of niches in the place making lots of small interventions rather than a few large ones.



The term modularity, according to ecologists Brian Walker and David Salt, relates to 'ther manner in which the components that make up a system are linked'.

A more modular structure means that the parts of a system can more effectively self-organise in the event of shock. For example, as a result of the globalization of the food industry, animals and animal parts are moved around the world, leading to increased occurrences of diseases such as bird flu and food-and-mouth disease. Reducing animal transportation and reintroducing local abattoirs and processing would lead to a more modular system, with local breeds for local markets and a much reduced risk of disease spreading with the rapidity that we have seen in recent outbreaks.

When designing energy descent pathways for transition initiatives, the concept of modularity is key: maximising modularity with more internal connections reduces vulnerability to any disruptions of wider networks. Local food systems, local investment models, and so on, all add to this modularity, meaning that we engage with wider world but from an ethic of networking and information sharing rather than of mutual dependence.


tightness of feedback

Tightness of feedback refers to how quickly and strongly the consequences of change in one part of the system are felt and responded to in other parts. Walker and Salt write:' Centralised governance and globalization can weaken feedbacks. As feedbacks lengthen, there is an increased chance of crossing threshold without detecting it in a timely fashion.' In a more localised system, the results of our actions are more obvious. We don't want excessive use of pesticides or other pollutants in our area, but seem happier to be oblivious to their use in other parts of the world. In a global system, the feedbacks about the impacts of soil erosion, low pay and pesticide use provide weak feedback signals. Tightening feedback loops will have beneficial results, allowing us to bring the consequences of our actions closer to home, rather than their being so far from our awareness that they don't even register. When people live off the grid in terms of energy, they are more mindful about their consumption because they are close to its generation - the feedback loop is smaller.


1. what is resilience?

2. rebuilding resilience

3. the transition model


4. how to start a transition initiative?


back to local level



Rob Hopkins (2008): The Transition Handbook: from oil dependency to local resilience, Green Books, p. 54-56