Agroecology: The Ecology of Sustainable Food Systems
Providing the theoretical and conceptual framework for this continually evolving field, Agroecology: The Ecology of Sustainable Food Systems, Second Edition explores environmental factors and complexities affecting agricultural crops and animals. Completely revised, updated, and reworked, the second edition contains new data, new readings, new issues and case studies, and new options. It includes two completely new chapters, one on the role of livestock animals in agroecosystems and one on the cultural and community aspects of sustainable food systems.
The author clearly delineates the importance of using an ecosystem framework for determining if a particular agricultural practice, input, or management decision contributes or detracts from sustainability. He explains how the framework provides the ecological basis for the functioning of the chosen management strategy over the long-term. He also examines system level interactions, stressing the need for understanding the emergent qualities of populations, communities, and ecosystems and their roles in sustainable agriculture. Using examples of farming systems in a broad array of ecological conditions, the book demonstrates how to use an ecosystem approach to design and manage agroecosystems for sustainability.
adapted agroecology agroecosystems agroforestry allelopathic allow animals areas beneﬁcial beneﬁts biodiversity biological biomass carbon Chapter chemical complex components consumers corn cover crop crop plants cropping systems cultural energy cycle dependent disturbance ecological economic ecosys ecosystem services effects efﬁciency environment environmental erosion example factors farmers farming systems fertilizer ﬁeld Figure ﬁnd ﬁre ﬁrst ﬂow ﬂowering food production food system function genetic diversity Gliessman global grazing growth habitat harvest herbivores human impacts important increase inﬂuence integrated interactions intercrop interference irrigation K-selection land landscape legume light livestock manure modiﬁcation moisture monoculture natural ecosystems niche nitrogen noncrop nutrient occur organic matter perennial pest pesticides photosynthesis polyculture population potential practices r-strategists rainfall reduced regions role roots seed signiﬁcant social soil organic matter soil surface species speciﬁc structure sustainable agriculture temperature tion trees tropical types variety vegetation weeds wind yield