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
Tuesday, 29 October 2019
Polycultures store more soil carbon (journal)
Microbial spatial footprint as a driver of soil carbon stabilization
Increasing the potential of soil to store carbon (C) is an acknowledged strategy for capturing atmospheric CO2. Yet experimental evidence often fails to support anticipated C gains. Here, authors demonstrate for the first time that plant-stimulated soil pore formation appears to be a major, hitherto unrecognized, determinant of whether new C inputs are stored or lost. Unlike monocultures, diverse plant communities favor the development of 30–150 µm pores. Such pores are the micro-environments associated with higher enzyme activities, and greater abundance of such pores translates into a greater spatial footprint that microorganisms make on the soil and consequently soil C storage capacity.
The potential of forest gardens (#journal)
Exploring the potential of edible forest gardens: experiences from a participatory action research project in Sweden
To meet the environmental challenges that are presently confronting society, the narrow focus on agricultural production needs to be altered to one that places equal value on the generation of crucial ecosystem services. Current research shows that perennial intercropping systems such as agroforestry may be a feasible alternative. Based on studies during the establishment of edible forest gardens in 12 participating farms in Sweden, this paper explores the potential of utilizing multi-strata designs for food production in temperate, high-income countries. Design and species composition of such gardens, types of food they provide, and how they would best fit into the present landscape are discussed. Large knowledge gaps concerning potential production, social and economic benefits, and agronomic issues were identified.
To meet the environmental challenges that are presently confronting society, the narrow focus on agricultural production needs to be altered to one that places equal value on the generation of crucial ecosystem services. Current research shows that perennial intercropping systems such as agroforestry may be a feasible alternative. Based on studies during the establishment of edible forest gardens in 12 participating farms in Sweden, this paper explores the potential of utilizing multi-strata designs for food production in temperate, high-income countries. Design and species composition of such gardens, types of food they provide, and how they would best fit into the present landscape are discussed. Large knowledge gaps concerning potential production, social and economic benefits, and agronomic issues were identified.
US agriculture is destroying insect life (online)
New study: U.S. agriculture 48 times more toxic to insects than 25 years ago
A new peer-reviewed study shows an explosion in the toxicity of U.S. agriculture for insects over the past 25 years since neonicotinoid pesticides were introduced. The study found that U.S. agriculture is 48 times more toxic to insect life, and that neonicotinoids account for 92 percent of the increase in toxicity.
Published in the journal PLOS ONE, An assessment of acute insecticide toxicity loading of chemical pesticides used on agricultural land in the United States,
is the first study to quantify how hazardous our agricultural lands
have become for insect life by providing a way to compare changes in the
toxicity of U.S. agriculture year-to-year. The increase in toxic load measured by
the study is consistent with recent reports of dramatic declines in
beneficial insects and bird populations. The study comes on the heels of
the first meta-analysis
of global insect decline, which found that 40 percent of insect species
face extinction in coming decades, leading the authors to warn of
“catastrophic ecosystem collapse” if we don’t change the way we farm.
AgroecologyNow! (online)
AgroecologyNow!
AgroecologyNow! is an initiative convened by the Centre for Agroecology, Water and Resilience in the United Kingdom working with partners including social movements, civil society, governments and research institutions to promote a transformative agroecology for food sovereignty and social justice. It is based on the commitment to co-producing and mobilising knowledge with civil society organisations, intergovernmental bodies, policy-makers, researchers and food producers to advance societal transformations for agroecology. Work especially stresses the importance of People's Knowledge in societal transformation and using participatory, transdisciplinary and action oriented approaches to research.
AgroecologyNow! is an initiative convened by the Centre for Agroecology, Water and Resilience in the United Kingdom working with partners including social movements, civil society, governments and research institutions to promote a transformative agroecology for food sovereignty and social justice. It is based on the commitment to co-producing and mobilising knowledge with civil society organisations, intergovernmental bodies, policy-makers, researchers and food producers to advance societal transformations for agroecology. Work especially stresses the importance of People's Knowledge in societal transformation and using participatory, transdisciplinary and action oriented approaches to research.
Traditional food systems prevent malnutrition (report)
Exploring the Potential of Diversified Traditional Food Systems to Contribute to a Healthy Diet
This report authored by members of the Food Sovereignty Alliance India along with the Catholic Health Association of India is an in-depth analysis of the traditional diets of marginal farmers, landless and agro-pastoralists.
The enquiry provided clear evidence of the following:
This report authored by members of the Food Sovereignty Alliance India along with the Catholic Health Association of India is an in-depth analysis of the traditional diets of marginal farmers, landless and agro-pastoralists.
The enquiry provided clear evidence of the following:
- Marginal farming communities continue to be a rich repository of knowledge, resilient food systems, biodiversity and agro-ecology.
- Their food systems are nutritionally diverse and rich in nutrients.
- These traditional food systems have been eroded over time.
- Land, water and forest rights are seriously under threat.
- Lived experience and knowledge is an integral part of lives and livelihoods and socio-ecological resilience.
First peer reviewed permaculture book - free! (Download)
The Permaculture Student 2
The first peer-reviewed permaculture textbook EVER and the first cited and referenced global permaculture textbook since Bill Mollison's 1989 Permaculture: A Designer's Manual. Representing & collaborating with dozens of experts & organizations from around the world, Matt Powers' latest installment in his series of curriculum takes permaculture to a new level & organizes all regenerative techniques & methodologies into one clear, understandable system that also serves as a path to deeper study. Download it FREE.
The amazing evolution of oak trees (online)
Evolutionary history of oaks
Oaks have a complex evolutionary history that has long eluded scientists. New research, however, provides the most detailed account to date of the evolution of oaks, recovering the 56-million-year history that has made the oaks one of the most diverse, abundant and important woody plant groups to the ecology and economy of the northern hemisphere.
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