Biodiversity

Abstract

This chapter discusses biodiversity in farming systems, including a consideration of the ecological importance of non-agricultural habitats within farm systems. The chapter outlines patterns of biodiversity in space and time, as well as at varying levels (genetic, organismal, landscape), before exploring the impact of agriculture on biodiversity at local, regional, and global scales. Farmland is an artificial environment, often characterized by monocultures grown at a density that differs from natural growth patterns. This can generate instability, resistance to environmental change, susceptibility to pests, pollution, and impacts on other ecosystem services such as soil and water. The chapter ends with a discussion of the biological implications of continued agricultural change (e.g. specialization, intensification).