You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Assessing Pesticide Effects on Non-Target Invertebrates Using Long-Term Monitoring and Time-Series Modelling
N. J. Aebischer
Vol. 4, No. 3, New Horizons in Ecotoxicology (1990), pp. 369-373
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2389598
Page Count: 5
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
One way of assessing ecotoxicological effects of pesticides at the farm level is by longterm environmental monitoring coupled with time-series modelling. This is illustrated with 20 years of data on the density of sawflies (Symphyta: Hymenoptera) in cereals on a 62-km2 area of West Sussex. The summer use of aphicides in the area first became important in 1989, when 7 km2 were treated with dimethoate. Based on pre-1989 data, annual sawfly densities were found to be related, with a 1-year lag, to the proportion of cereal fields which were undersown and to summer rainfall and temperature, with a strong autoregressive component. In 1989, sawfly density in the area treated with dimethoate was less than one-tenth of that predicted by the model.
Functional Ecology © 1990 British Ecological Society