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2010
- handle: 10670/1.7xxsmu
- halshs: halshs-00584952
- doi: 10.1016/j.gloplacha.2010.01.007
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2010.01.007
Mots-clés
Iles Canaries Espagne Afrique du Nord Fuerteventura Lanzarote Pléistocène Holocène climat environnement insecte pédologie géoarchéologieSujets proches
Canary Serinus canariaCiter ce document
Joaquín Meco Cabrera et al., « The Acridian plagues, a new Holocene and Pleistocene palaeoclimatic indicator », HAL-SHS : archéologie, ID : 10.1016/j.gloplacha.2010.01.007
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Résumé
Five palaeosols, intercalated within the Quaternary dune beds of Fuerteventura and Lanzarote (Canary Islands), off the Moroccan coast, mark wetter climatic episodes. In all of them, billions of calcified insect ootheca testify to past occurrences of Acridian plagues, such as those reaching the western Sahara following heavy rainfall events over the Sahel. The most massive infestation is in the Holocene, and should coincide with the climax of Saharo-Sahelian humidity at the peak of the present interglacial