Agroecology is defined by the OECD as "the study of the relation of agricultural crops and environment."[2] Dalgaard et al. refer to agroecology as the study of the interactions between plants, animals, humans and the environment within agricultural systems.[3] Francis et al. also use the definition in the same way, but thought it should be restricted to growing food.[4]
Agroecology is a holistic approach that seeks to reconcile agriculture and local communities with natural processes for the common benefit of nature and livelihoods.[5]
Agroecology is inherently multidisciplinary, including sciences such as agronomy, ecology, environmental science, sociology, economics, history and others.[3] Agroecology uses different sciences to understand elements of ecosystems such as soil properties and plant-insect interactions, as well as using social sciences to understand the effects of farming practices on rural communities, economic constraints to developing new production methods, or cultural factors determining farming practices.[citation needed] The system properties of agroecosystems studied may include: productivity, stability, sustainability and equitability.[6] Agroecology is not limited to any one scale; it can range from an individual gene to an entire population, or from a single field in a given farm to global systems.[3]
Wojtkowski differentiates the ecology of natural ecosystems from agroecology inasmuch as in natural ecosystems there is no role for economics, whereas in agroecology, focusing as it does on organisms within planned and managed environments, it is human activities, and hence economics, that are the primary governing forces that ultimately control the field.[7][8] Wojtkowski discusses the application of agroecology in agriculture, forestry and agroforestry in his 2002 book.[7]
Varieties
Buttel identifies four varieties of agroecology in a 2003 conference paper. The main varieties he calls ecosystem agroecology which he claims derives from the ecosystem ecology of Howard T. Odum and focuses less on the rural sociology, and agronomic agroecology which he identifies as being oriented towards developing knowledge and practices to agriculture more sustainable. The third long-standing variety Buttel calls ecological political economy which he defines as critiquing the politics and economy of agriculture and weighted to radical politics. The smallest and newest variety Buttel coins agro-population ecology, which he says is very similar to the first, but is derived from the science of ecology primarily based on the more modern theories of population ecology such as population dynamics of constituent species, and their relationships to climate and biogeochemistry, and the role of genetics.[9]
Dalgaard et al. identify different points of view: what they call early "integrative" agroecology, such as the investigations of Henry Gleason or Frederic Clements. The second version they cite Hecht (1995) as coining "hard" agroecology which they identify as more reactive to environmental politics but rooted in measurable units and technology. They themselves name "soft" agroecology which they define as trying to measure agroecology in terms of "soft capital" such as culture or experience.[3]
The history of agroecology depends on whether you are referring to it as a body of thought or a method of practice, as many indigenous cultures around the world historically used and currently use practices we would now consider utilizing knowledge of agroecology. Examples include Maori, Nahuatl, and many other indigenous peoples.[17]
The Mexica people that inhabited Tenochtitlan pre-colonization of the Americas used a process called chinampas that in many ways mirrors the use of composting in sustainable agriculture today.[18] The use of agroecological practices such as nutrient cycling and intercropping occurs across hundreds of years and many different cultures.[19] Indigenous peoples also currently make up a large proportion of people using agroecological practices, and those involved in the movement to move more farming into an agroecological paradigm.[20]
Pre-WWII academic thought
According to Gliessman and Francis et al., agronomy and ecology were first linked with the study of crop ecology by Klages in 1928. This work is a study of where crops can best be grown.[4][21][22]
Wezel et al. say the first mention of the term agroecology was in 1928, with the publication of the term by Basil Bensin.[10] Dalgaard et al. claim the German zoologist Friederichs was the first to use the name in 1930 in his book on the zoology of agriculture and forestry,[3][23] followed by American crop physiologist Hansen in 1939, both using the word for the application of ecology within agriculture.[3]
Post-WWII academic thought
Tischler's 1965 book Agrarökologie may be the first to be titled 'agroecology'. He analyzed the different components (plants, animals, soils and climate) and their interactions within an agroecosystem as well as the impact of human agricultural management on these components.[24]
Gliessman describes that post-WWII ecologists gave more focus to experiments in the natural environment, while agronomists dedicated their attention to the cultivated systems in agriculture, but in the 1970s agronomists saw the value of ecology, and ecologists began to use the agricultural systems as study plots, studies in agroecology grew more rapidly.[21] More books and articles using the concept of agroecosystems and the word agroecology started to appear in 1970s.[10] According to Dalgaard et al., it probably was the concept of "process ecology" such as studied by Arthur Tansley in the 1930s which inspired Harper's 1974 concept of agroecosystems, which they consider the foundation of modern agroecology.[3] Dalgaard et al. claim Frederic Clements's investigations on ecology using social sciences, community ecology and a "landscape perspective" is agroecology, as well as Henry Gleason's investigations of the population ecology of plants using different scientific disciplines.[3]Ethnobotanist Efraim Hernandez X.'s work on traditional knowledge in Mexico in the 1970s led to new education programs in agroecology.[4]
Works such as Silent Spring and The Limits to Growth caused the public to be aware of the environmental costs of agricultural production, which caused more research in sustainability starting in the 1980s.[3] The view that the socio-economic context are fundamental was used in the 1982 article Agroecologia del Tropico Americano by Montaldo, who argues that this context cannot be separated from agriculture when designing agricultural practices.[4] In 1985 Miguel Altieri studied how the consolidation of the farms and cropping systems impact pest populations, and Gliessman how socio-economic, technological, and ecological components gave rise to producer choices of food production systems.[4]
In 1995, Edens et al. in Sustainable Agriculture and Integrated Farming Systems considered the economics of systems, ecological impacts, and ethics and values in agriculture.[4]
Social movements
Several social movements have adopted agroecology as part of their larger organizing strategy. Groups like La Via Campesina have used agroecology as a method for achieving food sovereignty.[25] Agroecology has also been utilized by farmers to resist global agricultural development patterns associated with the green revolution.[25]
Agroecology is an applied science that involves the adaptation of ecological concepts to the structure, performance, and management of sustainable agroecosystems.[26] In Latin America, agroecological practices have a long history and vary between regions but share three main approaches or levels: plot scale, farm scale, and food system scale.[27] Agroecology in Latin American countries can be used as a tool for providing both ecological, economic, and social benefits to the communities that practice it,[28] as well as maintaining high biodiversity and providing refuges for flora and fauna in these countries.[29] Due to its broad scope and versatility, it is often referred to as "a science, a movement, a practice."[27]
Overlooking a large shade cacao plantation where the Ixcacao Mayan Belizean Chocolate company grows and produces chocolate using Mayan techniques.
Africa
Garí wrote two papers for the FAO in the early 2000s about using an agroecological approach which he called "agrobiodiversity" to empower farmers to cope with the impacts of the AIDS on rural areas in Africa.[30][31]
In 2011, the first encounter of agroecology trainers took place in Zimbabwe and issued the Shashe Declaration.
Within those academic research areas that focus on topics related to agriculture or ecology such as agronomy, veterinarian science, environmental science, and others, there is much debate regarding what model of agriculture or agroecology should be supported through policy. Agricultural departments of different countries support agroecology to varying degrees, with the UN being perhaps its biggest proponent.
^Conway, Gordon R. 1985. Agroecosystem analysis. Agricultural Administration, 20, 31-55.
^ abWojtkowski, Paul A. (2002) Agroecological Perspectives in Agronomy, Forestry and Agroforestry. Science Publishers Inc., Enfield, New Hampshire, 356p.
^Wojtkowski, Paul A. (2006) Introduction to Agroecology: Principles and Practices. Haworth Press, Binghamton, NY, 404p.
^Wibblemann et al. (2013) Mainstreaming Agroecology: Implications for Global Food and Farming Systems. "Archived copy"(PDF). Archived from the original(PDF) on 2016-05-22. Retrieved 2015-05-19.{{cite web}}: CS1 maint: archived copy as title (link)
^Vandermeer, J. 1995. The ecological basis of alternative agriculture. Annu. Rev. Ecol. Syst. 26: 201-224
^Suárez-Torres, J., Suárez-López, J. R., López-Paredes, D., Morocho, H., Cachiguango-Cachiguango, L. E., & Dellai, W. (2017, June 1). Agroecology and Health: Lessons from Indigenous Populations. Current Environmental Health Reports. https://doi.org/10.1007/s40572-017-0146-z
^ abGliessman, Stephen. R Agroecology: Ecological Processes in Sustainable Agriculture. Ann Arbor: Sleeping Bear Press, 1998.
^Friederichs, K. (1930) Die Grundfragen und Gesetzmäßigkeiten der land- und forstwirtschaftlichen Zoologie. Vol. 1: Ökologischer Teil, Vol. 2: Wirtschaftlicher Teil. Verlagsbuchhandlung Paul Parey, Berlin, Germany, 417 and 443 pp.
^Tischler, W. (1965). Agrarökologie. Gustav Fischer Verlag, Jena, Germany, 499 pp.
^ abGiraldo, Omar Felipe; Rosset, Peter M. (2018-03-19). "Agroecology as a territory in dispute: between institutionality and social movements". The Journal of Peasant Studies. 45 (3): 545–564. doi:10.1080/03066150.2017.1353496. ISSN0306-6150. S2CID149061121.
^Altieri, Miguel A., Peter Rosset, and Lori Ann Thrupp. "The Potential of Agroecology to Combat Hunger in the Developing World." A 2020 Vision for Food, Agriculture, and the Environment.(1998). Brief 55. Food and Agriculture Organization of the United States.
^Altieri, Miguel A. "Part 1." Agroecological Innovations: Increasing Food Production with Participatory Development. By Norman Thomas. Uphoff. London: Earthscan Publications. (2002): 3-71.
^Garí, Josep A. (2004). Plant diversity, sustainable rural livelihoods and the HIV/AIDS crisis. Bangkok: UNDP & FAO, 2004. Published in English and Chinese. ISBN974-92021-4-7.
Buttel, F.H. and M.E. Gertler 1982. Agricultural structure, agricultural policy and environmental quality. Agriculture and Environment 7: 101–119.
Carrol, C. R., J.H. Vandermeer and P.M. Rosset. 1990. Agroecology. McGraw Hill Publishing Company, New York.
Paoletti, M.G., B.R. Stinner, and G.G. Lorenzoni, ed. Agricultural Ecology and Environment. New York: Elsevier Science Publisher B.V., 1989.
Robertson, Philip, and Scott M Swinton. "Reconciling agricultural productivity and environmental integrity: a grand challenge for agriculture." Frontiers in Ecology and the Environment 3.1 (2005): 38–46.
Monbiot, George. 2022. "Regenesis: Feeding the World without Devouring the Planet."
Advances in Agroecology Book Series
Soil Organic Matter in Sustainable Agriculture (Advances in Agroecology) by Fred Magdoff and Ray R. Weil (Hardcover - May 27, 2004)
Agroforestry in Sustainable Agricultural Systems (Advances in Agroecology) by Louise E. Buck, James P. Lassoie, and Erick C.M. Fernandes (Hardcover - Oct 1, 1998)
Agroecosystem Sustainability: Developing Practical Strategies (Advances in Agroecology) by Stephen R. Gliessman (Hardcover - Sep 25, 2000)
Interactions Between Agroecosystems and Rural Communities (Advances in Agroecology) by Cornelia Flora (Hardcover - Feb 5, 2001)
Landscape Ecology in Agroecosystems Management (Advances in Agroecology) by Lech Ryszkowski (Hardcover - Dec 27, 2001)
Integrated Assessment of Health and Sustainability of Agroecosystems (Advances in Agroecology) by Thomas Gitau, Margaret W. Gitau, David Waltner-ToewsClive A. Edwards June 2008 | Hardback: 978-1-4200-7277-8 (CRC Press)
Multi-Scale Integrated Analysis of Agroecosystems (Advances in Agroecology) by Mario Giampietro 2003 | Hardback: 978-0-8493-1067-6 (CRC Press)
Soil Tillage in Agroecosystems (Advances in Agroecology) edited by Adel El Titi 2002 | Hardback: 978-0-8493-1228-1 (CRC Press)
Tropical Agroecosystems (Advances in Agroecology) edited by John H. Vandermeer 2002 | Hardback: 978-0-8493-1581-7 (CRC Press)
Structure and Function in Agroecosystem Design and Management (Advances in Agroecology) edited by Masae Shiyomi, Hiroshi Koizumi 2001 | Hardback: 978-0-8493-0904-5 (CRC Press)
Biodiversity in Agroecosystems (Advances in Agroecology) edited by Wanda W. Collins, Calvin O. Qualset 1998 | Hardback: 978-1-56670-290-4 (CRC Press)
Sustainable Agroecosystem Management: Integrating Ecology, Economics and Society. (Advances in Agroecology) edited by Patrick J. Bohlen and Gar House 2009 | Hardback: 978-1-4200-5214-5 (CRC Press)
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