We are no longer updating the Research Digest. All content remains.
The Permaculture Research Digest has summaries of newly published permaculture-related research. All items are
hyper-linked to the original publication.
The 'January 2013' archive contains 60 items published in 2012.
Items marked with a # have restricted public access, although abstracts are freely available.
Permaculture Research Digest
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Wednesday 29 October 2014
Guerilla gardening in the UK (report)
Guerrilla Gardening in Manchester
Exploring Perceptions of Guerrilla Practices
Urban
Agriculture (UA) is an emerging field in the academic world.
Yet
the idea of illegal or ‘informal’ urban gardening is neglected.
Guerrilla
gardening
is "the illicit cultivation of someone else's land" and has
a long tradition across the globe. It is not restricted to food
production but also includes the beautification of space with flowers
and other plants. In Greater Manchester, several forms of UA exist
with guerrilla gardening being one of
them. Although local people and organisations might not know the term guerrilla
gardening, they practice it. This report gives a view on the (il)legal urban
agriculture scene in Greater Manchester.
De Schutter on the future of food (#journal)
SAFETY AND SUSTAINABILITY IN THE ERA OF FOOD SYSTEMS: REACHING A MORE INTEGRATED APPROACH: THE SPECTER OF PRODUCTIVISM AND FOOD DEMOCRACY
UN Special rappoteur on the Right to Food, Oliver De Schutter, discusses the future of food production and food policy, and encourages a move away from productivism (obsession with simple quantitative measures of food production) towards sustainability and food security, ensuring everyone has access to food and that environmental harms of food production systems are eliminated.
Intensive agriculture reduces soil biota (#journal)
Intensive agriculture reduces soil biodiversity across Europe
Soil biodiversity plays a key role in regulating the processes that underpin the delivery of ecosystem goods and services in terrestrial ecosystems. Agricultural intensification is known to change the diversity of individual groups of soil biota. This study examined biodiversity in soil food webs from grasslands in Sweden, the UK, the Czech Republic and Greece. It found that land use intensification reduced the complexity in the soil food webs, as well as the community-weighted mean body mass of soil fauna. In all regions across Europe, species richness of earthworms, Collembolans and oribatid mites was negatively affected by increased land use intensity. Intensive agriculture reduces soil biodiversity, making soil food webs less diverse and composed of smaller bodied organisms.
The Integral Permaculture Academy (online)
The Integral Permaculture Academy
Integral Permaculture is a design practice based on a holistic & ethical science that includes all levels of experience - internal & external, individual & collective, ancient & modern - united into a coherent & systemic whole, with the sole purpose of designing healthy & sustainable cultures & environments for all species. The Integral Permaculture Academy is a collective of experienced permaculture designers, social activists & change agents who are designing an international, multi-lingual community together with students and others who are passionate about the need to co-create healthy & sustainable cultures & environments for all species.
Fantastic food systems website launched (online)
Food systems academy an open education resource to transform our food system
Food systems around the world have been radically transformed in the past 200 years. Yet over 800 million people go hungry and 1.4bn are overweight. Food systems will be further transformed this century in the face of globalisation, climate change and a world population of 9-10 billion. The key questions are how, in whose interests and to what ends?
This site aims to help you increase your understanding of our food systems – where they came from, how they change, what the challenges are and how to meet them.
Food systems around the world have been radically transformed in the past 200 years. Yet over 800 million people go hungry and 1.4bn are overweight. Food systems will be further transformed this century in the face of globalisation, climate change and a world population of 9-10 billion. The key questions are how, in whose interests and to what ends?
This site aims to help you increase your understanding of our food systems – where they came from, how they change, what the challenges are and how to meet them.
Tuesday 28 October 2014
Exploring sustainability science journals (#journal)
Creating an academic landscape of sustainability science: an analysis of the citation network
Sustainability is an important concept for society, economics, and the environment, with thousands of research papers published on the subject annually. This paper provides an academic landscape of sustainability science by analyzing the citation network of papers published in academic journals. Results show the existence of 15 main research clusters: Agriculture, Fisheries, Ecological Economics, Forestry (agroforestry), Forestry (tropical rain forest), Business, Tourism, Water, Forestry (biodiversity), Urban Planning, Rural Sociology, Energy, Health, Soil, and Wildlife. Agriculture, Fisheries, Ecological Economics, and Forestry (agroforestry) clusters are predominant.
UK mosquitoes breed in water butts (journal)
British Container Breeding Mosquitoes: The Impact of Urbanisation and Climate Change on Community Composition and Phenology
In Britain, storage of water in garden water butts is increasing, potentially expanding mosquito larval habitats and influencing population dynamics and mosquito-human contact. The authors show that the community composition, abundance and phenology of mosquitoes breeding in experimental water butt containers were influenced by urbanisation. Mosquitoes in urban containers were present in significantly higher densities than those in rural containers. Urban containers were dominated by Culex pipiens (a potential vector of West Nile Virus [WNV]) and Anopheles plumbeus (a human-biting potential WNV and malaria vector). Among other factors, this was associated with an urban heat island effect which raised temperatures by around 1°C. Further increases in domestic water storage in combination with climate change will likely alter mosquito population dynamics in the UK.
Bioenergy could provide 62% of UK electricity (#journal)
The potential for bioenergy crops to contribute to meeting GB heat and electricity demands
The paper presents a model system to determine the optimal distributions of both Miscanthus and short rotation coppice willow (SRC) in Great Britain, as well as their potential contribution to meet heat and electricity demand in GB. Results show that Miscanthus and SRC could generate, in an economically competitive way compared with other energy generation costs, 224 800 GWh yr−1 heat and 112 500 GWh yr−1 electricity, with 8 Mha of available land under Miscanthus and SRC, accounting for 66% of total heat demand and 62% of total electricity demand . Miscanthus is favoured in the Midlands and areas in the South, while SRC is favoured in Scotland, the Midlands and areas in the South.
Mushroom growing indoors and out (book)
Organic Mushroom Farming and Mycoremediation Simple to Advanced and Experimental Techniques for Indoor and Outdoor Cultivation
Thursday 23 October 2014
Carbon footprint calculators for crops (#journal)
A Comparative Analysis of Relevant Crop Carbon Footprint Calculators, with Reference to Cotton Production in Australia
An increasing concern over the sustainability of food and fiber crops require that farmers have access to appropriate and tools to be able to measure and improve the outcomes. This article focuses on one of the sustainability indicators, greenhouse gas (GHG) emissions, and nine internationally accredited carbon footprint calculators were compared on an outcomes basis against the same cropping data from a case study cotton farm. The purpose of this article is to identify the most “appropriate” methodology to be applied by cotton suppliers in this regard. The authors propose a new integrated model as the basis for an internationally accredited carbon footprint tool for cotton farming.Integrating farmer knowledge with science (#journal)
Linking Farmers’ Knowledge, Farming Strategies, and Consequent Cultivation Patterns into the Identification of Healthy Agroecosystem Characteristics at Local Scales
In order to identify sustainable management solutions for small-scale farmer agroecosystems, a better understanding of these dynamic forest–farmland systems, existing farming and forestry strategies, and farmer perspectives is important. The authors' examined the relationship between agricultural land use patterns and farmers’ practices in the context of village communities in Zanzibar, Tanzania. By integrating local expert knowledge and realities with scientific knowledge, we identified sustainable agroecosystem characteristics and farming practices, which are knowledge-intensive, alternative and adaptable to local conditions. Some of these practices are already a part of the local farming strategies and some require training and higher level support to reach healthier agroecosystem and better food security.Critiques of food sovereignty (#journal)
The debate on food sovereignty theory: agrarian capitalism, dispossession and agroecology
This article reviews recent critiques of the food sovereignty framework. It identifies tendencies in food sovereignty approaches to assume a food regime crisis, to emphasize accumulation by dispossession and to overlook expanded reproduction, and to espouse a romantic optimism about farmer-driven agroecological knowledge, devoid of modern science. Alternatives to current modernization trajectories cannot simply return to the peasant past. Instead, they need to recognize the desires of farmers to be incorporated into larger commodity networks, the importance of industrialization for feeding the world, and the support of state and science for realizing a food sovereign alternative.
Transforming the agro-food system (#journal)
Agroecological Research: Conforming—or Transforming the Dominant Agro-Food Regime?
Agroecology has three forms—a scientific discipline, an agricultural practice, and a social movement. Their integration has provided a collective-action mode for contesting the dominant agro-food regime and creating alternatives. But agroecology has been recently adopted by some actors who also promote conventional agriculture. Tensions between “conform versus transform” roles can be identified in European agroecological research. To play a transformative role, collaborative strategies need to go beyond the linear stereotype whereby scientists “transfer” technology to farmers. When farmer–scientist alliances co-create and exchange knowledge, such gains can transform the research system.Polycultures drive plant diversity (#journal)
Selection for niche differentiation in plant communities increases biodiversity effects
In experimental plant communities, relationships between biodiversity and ecosystem functioning have been found to strengthen over time. This paper shows that selection for niche differentiation between species can drive this increasing biodiversity effect. When grown in mixtures, relative differences in height and leaf area between plant species selected in mixtures (mixture types) were greater than between species selected in monocultures (monoculture types). Furthermore, net biodiversity and complementarity effects were greater in mixtures of mixture types than in mixtures of monoculture types. Our study demonstrates a novel mechanism for the increase in biodiversity effects: selection for increased niche differentiation through character displacement. Selection in diverse mixtures may therefore allow increased mixture yields in agriculture or forestry.
Tree Morphogensis (book)
Tree Morphogenesis Book 1, Reduction by Thinning Theory
Reduction Via Thinning is based on a conceptual model which is in turn, based on new and innovative insights into how trees are designed. Originally a service offered exclusively by the authors tree surgery company the ideas and rationale behind the service are now being made available to people and tree contractors around the world.
The science and art of tree care are closely linked in ways that may surprise you and by reading the book now available you will understand the Tree Morphogenesis project and the tree management strategy "Reduction Via Thinning" and how it can be applied to your trees.
Reduction Via Thinning is based on a conceptual model which is in turn, based on new and innovative insights into how trees are designed. Originally a service offered exclusively by the authors tree surgery company the ideas and rationale behind the service are now being made available to people and tree contractors around the world.
The science and art of tree care are closely linked in ways that may surprise you and by reading the book now available you will understand the Tree Morphogenesis project and the tree management strategy "Reduction Via Thinning" and how it can be applied to your trees.
Perennials in agriculture (online)
The advantages of perennial agriculture
This short introductory essay argues that agriculture can be made far more sustainable by transitioning to perennials. Conversion of annual fields into perennial fields offers many biodiversity-friendly benefits; reduced soil erosion, reduced chemical run-off, reduced water use and reduced fossil fuel input.The Land Institute, a United States non-profit group devoted to sustainable agriculture, offers a 50 year farm plan that aims to convert U.S. farmlands to 70 percent perennial crops from their current state of 25 percent perennials within 50 years. The Land Institute’s plan can be adapted to any developed government with centralized research and agriculture support.
Conference call; literature, art and permaculture
Permacultural Practices, panel proposed for the ASLE Eleventh Biennial Conference, June 23-27, 2015, University of Idaho
Permaculture has become a
truly global movement, inspiring home gardeners and farmers,
intentional communities and design courses, and artists and activists,
coming to refer more broadly to all aspects of culture, and referring as
much to an ethics of life and the living as to principles of
conscientious and efficient design. Inspired by this broadening of the concept, this panel
queries the applicability of permacultural values to the study of art
and literature.
To what extent might permaculture offer a model for thinking about the
slow violence and environmental injustice of contemporary (agri)culture?
How might consideration of permaculture’s design principles inform our
interdisciplinary aspirations? Could permaculture enhance our thinking
of peak oil, global warming, deep time, and the anthropocene? And, to what extent can art or literature
contribute to permaculture on the ground? Please submit a 300-word abstract and a brief bio by November 10, 2014, to both Molly Wallace (wallacem@queensu.ca) and David Carruthers (11dmjc@queensu.ca).
Tuesday 14 October 2014
Polycultures create win-wins (#journal)
Do polycultures promote win-wins or trade-offs in agricultural ecosystem services? A meta-analysis
This meta-analysis tested whether within-field crop diversification can lead to win-win relationships between yield and biocontrol of crop pests. 26 studies were considered. Win-win relationships were found between per plant yield of the primary crop and biocontrol in polyculture systems that minimized intraspecific competition. Findings were consistent across geographical regions and by type of primary crop. Practitioners should therefore utilize polycultures that decrease plant–plant competition through a substitution of large quantities of the primary crop for compatibly harvestable secondary crops. Additionally, if planting at high cropping densities, it is important that legumes be the secondary crop.
Monday 13 October 2014
The time has come for agro-ecology (online)
The Time has Come for Agro-ecology
This short article reviews the FAO's first Symposium on Agro-Ecology in Rome, and gives a good introduction to agro-ecology as a political movement.
This short article reviews the FAO's first Symposium on Agro-Ecology in Rome, and gives a good introduction to agro-ecology as a political movement.