Pablo Eyzaguirre

Home gardens: neglected hotspots of agro-biodiversity and cultural diversity

Over the last two decades, the importance of conserving genetic resources has received increasing attention. In this context the role of home gardens as repositories of biological diversity has been acknowledged but still a comprehensive, interdisciplinary investigation of their agro-biodiversity is lacking. Home gardens, whether found in rural or urban areas, are characterized by a structural complexity and multifunctionality which enables the provision of different benefits to ecosystems and people. Studies carried out in various countries demonstrate that high levels of inter- and intra-specific plant genetic diversity, especially in terms of traditional crop varieties and landraces, are preserved in home gardens. Families engage in food production for subsistence or small-scale marketing and the variety of crops and wild plants provides nutritional benefits. At the same time, home gardens are important social and cultural spaces where knowledge related to agricultural practices is transmitted and through which households may improve their income and livelihoods. The present article summarizes available literature on the biological and cultural significance of agro-biodiversity in home gardens. It discusses future constraints and opportunities in home garden research, in the prospect of defining and promoting their role in conservation of agricultural biodiversity and cultural heritage.

Agricultural Biodiversity, Nutrition, and Health: Making a Difference to Hunger and Nutrition in the Developing World

Background In spite of the strides made globally in reducing hunger, the problems of micronutrient deficiencies and coexisting obesity and related cardiovascular and degenerative diseases constitute a formidable challenge for the future. Attempts to reverse this trend with single-nutrient intervention strategies have met with limited success, resulting in renewed calls for food-based approaches. The deployment of agricultural biodiversity is an approach that entails greater use of local biodiversity to ensure dietary diversity. Objective To outline a new strategy proposed by the International Plant Genetic Resources Institute (IPGRI) that employs agricultural biodiversity as the primary resource for food security and health. Methods The authors carried out a meta-analysis to review and assemble existing information on the nutritional and healthful properties of traditional foods based on a diverse set of case studies and food composition and nutritional analysis studies. The methods highlight particular examples of foods where analysis of nutrient and non-nutrient composition reveals important traits to address the growing problems of malnutrition associated with the rise of chronic diseases. Finally, the authors analyze social, economic, and cultural changes that undermine the healthful components of traditional diets. Results Based on this multidisciplinary and comparative approach, the authors suggest a holistic food-based approach that combines research to assess and document nutritional and healthful properties of traditional foods, investigating options in which nutritionally valuable traditional foods can contribute to better livelihoods, and ways that awareness and promotional campaigns can identify healthful components of traditional diets that fit the needs of urban and market-oriented consumers. Conclusions There is an urgent need for agricultural research centers, national agricultural research systems, universities, and community-based organizations to work together under a shared policy framework with the aim of developing a strong evidence base linking biodiversity, nutrition, and health. Although these initiatives are still ongoing, the gains realized in small-scale and local pilot efforts have encouraged IPGRI to work with local partners toward the implementation of scale-up efforts in various regions.

Linking biodiversity, diet and health in policy and practice

Simplification of human diets associated with increased accessibility of inexpensive agricultural commodities and erosion of agrobiodiversity leads to nutrient deficiencies and excess energy consumption. Non-communicable diseases are growing causes of death and disability worldwide. Successful food systems in transition effectively draw on locally-available foods, food variety and traditional food cultures. In practice this process involves empirical research, public policy, promotion and applied action in support of multi-sectoral, community-based strategies linking rural producers and urban consumers, subsistence and market economies, and traditional and modern food systems. Implementation of the International Plant Genetic Resources Institutes Global Nutrition Strategy in Sub-Saharan Africa offers a useful case study. Relevant policy platforms, in which biodiversity conservation and nutrition are and should be linked, include the Millennium Development Goals, Millennium Ecosystem Assessment, Convention on Biological Diversity, Global Strategy on Diet, Physical Activity and Health, Food-Based Dietary Guidelines, Right to Adequate Food and UN Human Rights Commissions Permanent Forum on Indigenous Issues. The largely unexplored health benefits of cultivated and wild plants include micronutrient intake and functions related to energy density, glycaemic control, oxidative stress and immuno-stimulation. Research on the properties of neglected and underutilized species and local varieties deserves higher priority. In tests of the hypothesis that biodiversity is essential for dietary diversity and health, quantitative indicators of dietary and biological diversity can be combined with nutrition and health outcomes at the population level. That traditional systems once lost are hard to recreate underlines the imperative for timely documentation, compilation and dissemination of eroding knowledge of biodiversity and the use of food culture for promoting positive behaviours.

The role of agricultural biodiversity in strengthening resilience to climate change: towards an analytical framework

Traditional agricultural communities manage biodiversity at various scales, creating dynamic landscape mosaics of fields, gardens, orchards, pastures and ecosystem patches. Agricultural biodiversity and associated traditional knowledge are essential to the climate change resilience of these landscapes, but their roles are largely overlooked by researchers and policy makers. A review of 172 case studies and project reports from around the world shows that agricultural biodiversity contributes to resilience through a number of, often combined, strategies: the protection and restoration of ecosystems, the sustainable use of soil and water resources, agro-forestry, diversification of farming systems, various adjustments in cultivation practices and the use of stress-tolerant crops and crop improvement. Using social–ecological systems theory as a conceptual framework, these practices are examined to identify indicators of resilience in agricultural landscapes. The indicators are a first step in the development of a framework for assessing and building climate change resilience, intended both for local communities and for the scientists and organizations working closely with them. The framework can be used to (i) identify biodiversity management practices and social institutions that can be encouraged as ways to strengthen resilience, (ii) monitor the resilience of a landscape/community over time and (iii) aggregate and compare data across communities and landscapes.

Social‐ecological indicators of resilience in agrarian and natural landscapes

Purpose – The purpose of this paper is to present an approach aimed at facilitating nature conservation that builds on the ecological and social synergies that exist in traditionally managed landscapes in and around protected areas and integrates conservation and social goals to achieve a reduction in the levels of marginalization of indigenous and local communities while preventing ecosystem degradation and biodiversity loss.Design/methodology/approach – Drawing on literature research and insights from political and historical ecology and systems theory, a framework was developed to aid the understanding of human‐environment interactions taking place in traditionally managed ecosystems and landscapes and to monitor the role that these interactions play in the maintenance of such systems.Findings – Virtually all ecosystems and landscapes must be seen as coupled social‐ecological systems whose ability to respond to stresses and change derives from ecological and social characteristics, as well as from the ...

The value of plant genetic diversity to resource-poor farmers in Nepal and Vietnam

Genetic resources for food and agriculture are the biological basis of world food and nutrition security; and they directly or indirectly support the livelihoods of over 2.5 billion people. Genetic diversity gives a species or a population the ability to adapt to changing environments. For resource-poor farmers, adaptive animal breeds, crop varieties and cultivars adapted to particular micro-niches, stresses or uses are the main resources available to maintain or increase production and provide a secure livelihood. The economic value of genetic diversity for productivity and yield traits is discussed in the literature. However, it is difficult to value many other aspects of agricultural biodiversity as these have both direct and indirect values in terms of qualitative traits such as food, nutrition and environmental uses that include adaptation to low input conditions, co-adaptive complexes, yield stability and the consequent reduction of risk, specific niche adaptation, and in meeting socio-cultural needs. Together, the direct and indirect values of genetic resources for resource-poor farmers are expressed in a range of options in the form of the crop varieties and species they use for managing changing environments. The value of genetic diversity to resource-poor farmers is seldom captured by markets or addressed by the international research agenda. This paper presents lessons learned from our work over 5–10 years in the Asia and Pacific Ocean (APO) region on participatory crop improvement, home gardens and on-farm management of agricultural biodiversity. The lessons illustrate how farmers adapt genetic resources to suit local environmental conditions. The paper focuses on the value of genetic diversity of selected crop species to meet peoples food and other needs. Genetic diversity valued by resource-poor farmers is often maintained, selected and exchanged by local social seed networks. Identification of such genetic resources and their custodians is important if international agricultural research is to contribute to the reduction of poverty. The paper highlights some good practices from case studies that illustrate how such genetic resources could be exploited by informal research and development strategies or participatory plant breeding or for marketing value-added products.

Home gardens management of key species in Nepal: a way to maximize the use of useful diversity for the well-being of poor farmers

The purpose of this study is to identify key home garden species in order to address basic research questions aimed at understanding farmers’ home gardens management practices. The study was conducted in two contrasting Hill and Tarai sites in Nepal with households (HHs) ranging from 355 to 634. Unlike larger production systems, home gardens harbour many species in small areas often with a few crop varieties and species that are not well represented in larger fields. Given the number of species and their small population sizes, species and genetic diversity are best studied by identifying representative key species characterizing the complex productive niches within farms. Although species diversity within community is large (172–342), 24 key species were identified for the study. There is no fixed size of a home garden. The log of home garden size and species richness was positively correlated (r ¼ 0.42, P , 0.001). Species richness was significantly higher in vegetable followed by fodder, fruits and spices. This paper also explores the diversity in home gardens to identify the composition and characteristics of the key species and how they are managed, used and conserved. Most of the farmers save the seeds of these home garden species for their own use, but many also exchange and buy and sell seed in local weekly market. Farmers’ practices for selecting seed vary according to the reproductive biology of the key home garden species. Home gardens provide the HH with fresh and diverse supply of nutritious food, which improves their self-sufficiency, while conserving diversity on-farm. Despite this, they are neglected in research and development by policy makers and researchers.

Wild leafy vegetable use and knowledge across multiple sites in Morocco: a case study for transmission of local knowledge?

BackgroundThere are few publications on the use and diversity of wild leafy vegetables (WLVs) in Morocco. In order to address this gap, we conducted ethnobotanical field work in Taounate, Azilal and El House regions.MethodsEthnobotanical collections, free listing, qualitative interviews and a 7 day food frequency questionnaire.ResultsMore than 30 species in 23 genera of WLV were identified. Of these 4 had not previously recorded as WLVs used in Morocco in the literature. WLVs were used by 84% of households surveyed in Taounate (N = 61, in March 2005), and were used up to 4 times a week. Qualitative data revealed both positive and negative perceptions of WLVs and detailed knowledge about preparation among women. The greatest diversity of WLV knowledge and use was in the Rif Mountains (Taounate). There was significant variation in nomenclature and salience of WLVs, not only between regions, but also between villages in the same region. Within the same region (or even village) different local names were used for a given species or genus, and different species were identified by the same local name (including species from different botanical families). Data showed greater overlap in knowledge among villages using the same market.ConclusionWe believe the results suggest that markets are important sites for WLV knowledge transmission.

Evaluation and comparison of nutritional quality and bioactive compounds of berry fruits from Lonicera caerulea, Ribes L. species and Rubus idaeus grown in Russia

The fruits of three berry species cultivated in Russia, Rubus idaeus, Ribes L. species (R. nigrum and R. nigrum × R. 12 dikuscha) and the less common Lonicera caerulea, were investigated for their minerals and phytochemical compounds. Under the 13 same environmental conditions, differences in contents of nutrients and bioactive compounds among species were found. Lonicera 14 caerulea contained the highest level of K, Ribes L. presented the highest content of Ca, while R. idaeus displayed the highest 15 content of Mg and different micro-elements (Fe, Mn, Zn and Mo). Lonicera caerulea and Ribes L. displayed the highest content 16 of sugars, but the profile of individual sugars differed among each species, with a probable influence on the fruit’s organoleptic 17 quality. The most striking result was the polyphenolic contents of L. caerulea which was significantly higher than that of Ribes 18 L. and R. idaeus, two species already known to contain large amounts of these antioxidant compounds. This difference was 19 much higher when the subclass of anthocyanins is considered. These results revealed L. caerulea as a promising species from a 20 nutritional perspective.

Biocultural approaches to well-being and sustainability indicators across scales

Monitoring and evaluation are central to ensuring that innovative, multi-scale, and interdisciplinary approaches to sustainability are effective. The development of relevant indicators for local sustainable management outcomes, and the ability to link these to broader national and international policy targets, are key challenges for resource managers, policymakers, and scientists. Sets of indicators that capture both ecological and social-cultural factors, and the feedbacks between them, can underpin cross-scale linkages that help bridge local and global scale initiatives to increase resilience of both humans and ecosystems. Here we argue that biocultural approaches, in combination with methods for synthesizing across evidence from multiple sources, are critical to developing metrics that facilitate linkages across scales and dimensions. Biocultural approaches explicitly start with and build on local cultural perspectives — encompassing values, knowledges, and needs — and recognize feedbacks between ecosystems and human well-being. Adoption of these approaches can encourage exchange between local and global actors, and facilitate identification of crucial problems and solutions that are missing from many regional and international framings of sustainability. Resource managers, scientists, and policymakers need to be thoughtful about not only what kinds of indicators are measured, but also how indicators are designed, implemented, measured, and ultimately combined to evaluate resource use and well-being. We conclude by providing suggestions for translating between local and global indicator efforts.Biocultural approaches combining local values, knowledge, and needs with global ecological factors provide a fruitful indicator framework for assessing local and global well-being and sustainability, and help bridge the divide between them.