Distribution in Habitats

Abstract

Habitat studies, i.e. the study of where coccinellids live, are carried out in various ways. Some scientists record only the presence, others determine also the abundance while still others investigate both number and abundance of species in relation to important environmental factors. Here we will discuss the habitat studies using the latter approach. This involves a review of (1) methods of collection and description of data, and (2) their interpretation in terms of the basic factors which cause a variation in abundance. We shall further present (3) selected examples of coccinellid communities from economically important crops.