Therefore,
Heat wave, climate change …:
Do drought and recurring heat wave episodes disrupt the cicadas this summer in the Gard and in the Provence? Consequently,
For tourists as well as for the natives. However, summer would no longer be quite the same without the strident cries of the cicadas that cymbalize, the sound of the sunny vacation. Moreover, Will this idyllic picture disappear from the Gard and the near Provence in the coming years?
Some of you must have seen that in August that August cicada males. Meanwhile, those who issue this particular sound as part of a kind of nuptial song, are much more discreet. However. In addition, everything is brought together to have our sound universe which bathes our summer imagination since these insects cymbal from 25 degrees.
In the biodiversity heat wave, climate change … service of the city of Nîmes. Furthermore, it is confirmed that the cicadas were more discreet this summer, without alarming it. Consequently, They speak with caution of a possible phenomenon “cyclic”. They started manifesting themselves a little later than usual because of a spring not hot enough for them. But in this month of August, what could explain this quasi-site in these insects?
They migrate further north – Heat wave, climate change …
Entomologist. head of the Occitanie antenna of the office for insects and their environment, Stéphane Jaulin remains cautious: “In the Nîmes region, cicadas have been heard less than in other years because they may not have had the favorable conditions for them. But, for example, in Hérault, it was not found. It is difficult to connect it to a cause. For all insects, climate change has an impact.”
For many of them, it is even the decline. Population collapse has been noted heat wave, climate change … for five years for families of insects. Species no longer support this heat in the image of orthoptera which now take refuge towards more shaded corners.
The cicadas migrate more and more north of the Loire and fly towards other skies with their nuptial song. “I heard them at altitudes of 2,000 meters. They fly more easily to the north where they find more favorable temperature. humidity conditions in summer”underlines Stéphane Jaulin.
Underground larvae
The latter takes the opportunity to recall that beyond the effects of climate change. intensive agriculture and the artificialization of the soil “Also have an impact on fauna and flora. It may be that pesticides used to fight against the leaflet. a group of the same order as that of cicadas, have had harmful effects in certain places.”
The fact that the cicadas heard less in our department could also be the consequence of the heat wave, climate change … episodes of heat wave. drought in repeatedly because the larvae, which can live underground from two to five years, no longer manage to get out of the soils too dry and to pump the sap of the vegetation which does not have enough water.
A phenomenon that has something to worry because the cicadas. once in the open air, have a very short life expectancy, from four to five weeks. If the larvae do not survive, one can easily imagine the consequences on the populations of cicadas. It is on long time that we will have to study this phenomenon to have a little more certainties.
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