Estimates based on Products and Effects of Insects

  • T. R. E. Southwood


Measures of the size of populations based on the magnitude of their products or effects are often referred to as population indices. The relationship of these indices to the absolute population varies from equivalence, when the number of exuviae are counted, to no more than an approximate correlation, when the index is obtained from general measures of damage.


Aerial Photography Insect Population Insect Damage Population Index Color Photography 
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© T. R. E. Southwood 1978

Authors and Affiliations

  • T. R. E. Southwood
    • 1
  1. 1.University of OxfordUK

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