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Home. P.A. and Edward, C.L., 1997. Preliminaryobservations on awareness, management and impact of biodiversity in agricultural ecosystems. Memoirs ofthe Museum of Victoria 56(2): 281-285. Agricultural ecosystems are often considered to be biological 'deserts' because of the use of monocultures and pesticides. However, the species richness and abundance of invertebrates can be similar to that found in many natural ecosystems. This paper describes the diversity of surface-active carabid beetles and earwigs over 2 years in cropping land in the Wimmera region of Victoria and contrasts it with data from other ecosystems. Management practices such as tillage and stubble retention have an impact on some invertebrates, but extremely few studies have described effects on species considered beneficial. We present information on the relative number and likely impact of these beneficial species, particularly carabid beetles and earwigs. Information for farmers concerning invertebrates in agricultural ecosystems usually concentrates on pest species. An approach to raise awareness of invertebrate diversity is discussed.

Preliminary observations on awareness, management and impact of biodiversity in agricultural systems