Late Pliocene and Quaternary Eurasian locust infestations in the Canary Archipelago
Late Pliocene and Quaternary Eurasian locust infestations in the Canary Archipelago
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加那利群岛上新世晚期和第四纪欧亚蝗灾
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发表时间：
2011
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通讯作者：
D. Patterson
中科院分区：
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作者：
J. Meco;D. Muhs;M. Fontugne;A. Ramos;Alejandro Lomoschitz;D. Patterson
梅科，J.，Muhs，D.R.，Fontugne，M.，拉莫斯，A.J.G.，Lomoschitz，A. & Patterson，D. 2010年：加纳利群岛上新世晚期和第四纪欧亚蝗灾。Lethaia，Vol. 44，pp. 440-454.
加那利群岛长期以来一直是记录过去气候变化的敏感地点。与玄武岩熔岩互层的是主要更新世间冰期的海相沉积物，以及夹有古土壤的风成砂。古土壤中含有非洲的尘土和无数温带蝗虫的残余卵荚（参见Docious maroccanusThunberg 1815）。新的生态和地层信息揭示了蝗灾（或蝗灾）的地质历史及其古气候意义。在这里，我们表明，第一次从非洲到达加那利群岛的瘟疫发生在上新世末，约。3 Ma，并在晚更新世中期之前再次出现巨大的强度MIS（海洋同位素阶段）11（约。420 ka），MIS 5.5（ca. 125 ka），可能也发生在中更新世晚期和晚更新世的其他温暖间冰期。在全新世早期，蝗灾可能与当前间冰期的短暂凉爽期相吻合。在气候方面，加那利群岛的蝗灾是整个冰期的干冷气候（钙质沙丘）、间冰期早期的干旱-半湿润气候（非洲的沙尘输入和蝗灾）、间冰期高峰期的暖湿气候（塞内加尔动物群的海洋沉积物）、过渡性的干旱-温带气候（成土石灰岩）以及整个冰期的干冷气候（钙质沙丘）振荡链中的一个环节。在更新世的主要间冰期期间，加那利群岛记录了温暖的塞内加尔海洋动物群向北迁移，穿越欧洲-非洲大西洋的纬度。然而，这种向北的海洋动物群迁移之前，在陆地领域的间冰期蝗灾。蝗灾，加那利群岛，上新世晚期，更新世，全新世，古气候学。
Meco, J., Muhs, D.R., Fontugne, M., Ramos, A.J.G., Lomoschitz, A. & Patterson, D. 2010: Late Pliocene and Quaternary Eurasian locust infestations in the Canary Archipelago. Lethaia, Vol. 44, pp. 440–454.
The Canary Archipelago has long been a sensitive location to record climate changes of the past. Interbedded with its basalt lavas are marine deposits from the principal Pleistocene interglacials, as well as aeolian sands with intercalated palaeosols. The palaeosols contain African dust and innumerable relict egg pods of a temperate-region locust (cf. Dociostaurus maroccanusThunberg 1815). New ecological and stratigraphical information reveals the geological history of locust plagues (or infestations) and their palaeoclimatic significance. Here, we show that the first arrival of the plagues to the Canary Islands from Africa took place near the end of the Pliocene, ca. 3 Ma, and reappeared with immense strength during the middle Late Pleistocene preceding MIS (marine isotope stage) 11 (ca. 420 ka), MIS 5.5 (ca. 125 ka) and probably during other warm interglacials of the late Middle Pleistocene and the Late Pleistocene. During the Early Holocene, locust plagues may have coincided with a brief cool period in the current interglacial. Climatically, locust plagues on the Canaries are a link in the chain of full-glacial arid–cold climate (calcareous dunes), early interglacial arid–sub-humid climate (African dust inputs and locust plagues), peak interglacial warm–humid climate (marine deposits with Senegalese fauna), transitional arid–temperate climate (pedogenic calcretes), and again full-glacial arid–cold climate (calcareous dunes) oscillations. During the principal interglacials of the Pleistocene, the Canary Islands recorded the migrations of warm Senegalese marine faunas to the north, crossing latitudes in the Euro-African Atlantic. However, this northward marine faunal migration was preceded in the terrestrial realm by interglacial infestations of locusts. □Locust plagues, Canary Islands, Late Pliocene, Pleistocene, Holocene, palaeoclimatology.