Hard To Live

Immature cicada cast skin

Japanese biologists* noted a change in the composition of cicada species in Osaka, Japan. In the 1980s and 90s, many of the previously dominant cicada species declined and were replaced by a single dominant species, Cryptotympana facials. What caused this change in species composition?

A number of environmental variables were studied. One variable, soil hardness, was best correlated with observations. In urban areas, soil is subjected to a variety of activities that…

Source: Living With Insects Blog

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