This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Thursday, 18 August 2022
Cicadas Cease to Chorus?
Provence's circadas are no longer producing their characteristic chorus. Cicada sound is produced from tymbals on the male's abdomen, when he feels frisky. It appears that male cicadas don't sing, when the temperature in the shade exceeds 36 degrees Centigrade. Climate change is making exceeding this temperature in the Summer much more likely (https://www.theguardian.com/world/2022/aug/17/too-hot-to-chirp-french-heatwave-silences-cicadas-of-provence). Provence's loss of the cicada chorus is yet another example of how the climate crisis may force animals to move. Some species go up mountains, until they can to no higher. Others move towards the poles, until they can move no further. Cicada nymphs live underground for many years. We have no idea, however, if their lives and/or their mass emergences are also influenced by climate change.
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