Agroecology Knowledge Hub

Diversity: diversification is key to agroecological transitions to ensure food security and nutrition while conserving, protecting and enhancing natural resources

Agroecological systems are highly diverse. From a biological perspective, agroecological systems optimize the diversity of species and genetic resources in different ways. For example, agroforestry systems organize crops, shrubs, livestock and trees of different heights and shapes at different levels or strata, increasing vertical diversity. Intercropping combines complementary species to increase spatial diversity. Crop rotations, often including legumes, increase temporal diversity. Crop–livestock systems rely on the diversity of local breeds adapted to specific environments. In the aquatic world, traditional fish polyculture farming, Integrated Multi-Trophic Aquaculture (IMTA) or rotational crop-fish systems follow the same principles to maximising diversity.

Increasing biodiversity contributes to a range of production, socio-economic, nutrition and environmental benefits. By planning and managing diversity, agroecological approaches enhance the provisioning of ecosystem services, including pollination and soil health, upon which agricultural production depends. Diversification can increase productivity and resource-use efficiency by optimizing biomass and water harvesting.

Agroecological diversification also strengthens ecological and socio-economic resilience, including by creating new market opportunities. For example, crop and animal diversity reduces the risk of failure in the face of climate change. Mixed grazing by different species of ruminants reduces health risks from parasitism, while diverse local species or breeds have greater abilities to survive, produce and maintain reproduction levels in harsh environments. In turn, having a variety of income sources from differentiated and new markets, including diverse products, local food processing and agritourism, helps to stabilize household incomes.

Consuming a diverse range of cereals, pulses, fruits, vegetables and animal-source products contributes to improved nutritional outcomes. Moreover, the genetic diversity of different varieties, breeds and species is important in contributing macronutrients, micronutrients and other bioactive compounds to human diets. For example, in Micronesia, reintroducing an underutilized traditional variety of orange-fleshed banana with 50 times more beta-carotene than the widely available commercial white-fleshed banana proved instrumental in improving health and nutrition.

At the global level, three cereal crops provide close to 50 percent of all calories consumed, while the genetic diversity of crops, livestock, aquatic animals and trees continues to be rapidly lost. Agroecology can help reverse these trends by managing and conserving agro-biodiversity, and responding to the increasing demand for a diversity of products that are eco-friendly. One such example is ‘fish-friendly’ rice produced from irrigated, rainfed and deepwater rice ecosystems, which values the diversity of aquatic species and their importance for rural livelihoods.

Database

The National Institute of Agricultural Technology (INTA) of Argentina organizes a cycle of 11 virtual meetings on agroecology through Instagram. The meetings are happening every Thursday from 18:00 to 19:30 (GMT-3). A special issue on "Agroecology at FAO" will be held on 30 June 2020 at 16:00 (GMT-3) with the participation of Anne...
Argentina
Event
2020
The webinar of the FAO Technical network on Sustainable Crop Prodcution and Agroecology will discuss current knowledge concerning the potential use of agroecological approaches in the fall armyworm (FAW) response, highlighting experiences from parts of Africa, South America and South Asia. Agroecological approaches offer culturally appropriate, low cost options for...
Brazil - India - Malawi - Zambia
Event
2020
The Latin American Scientific Society of Agroecology (SOCLA), announces the VIII Latin American Congress of Agroecology under the theme "Agroecology. Latin American identity weaving the territory: urgent transformations for life". It will take place online on November 25, 26 and 27, 2020, under the coordination of the Organizing Commission of...
Event
2020
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