The late Pleistocene desiccation of Lake Victoria and the origin of its endemic biota
The late Pleistocene desiccation of Lake Victoria and the origin of its endemic biota
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维多利亚湖更新世晚期的干涸及其特有生物群的起源
DOI：
10.1007/s10750-007-9158-2
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发表时间：
2007
期刊：
影响因子：
2.6
通讯作者：
T. Johnson
中科院分区：
文献类型：
--
作者：
J. Stager;T. Johnson
关于维多利亚湖在晚更新世是否干涸，进化生物学家之间挥之不去的争论集中在关于维多利亚湖特有物种年龄的生物学证据和地质证据之间的冲突。本文回顾和更新了湖泊干旱化的地球物理和古生态证据，并描述了低水位期间水生物种可能经历的环境条件。维多利亚湖在18000至14000年前处于最低点，在此期间至少干涸了一次。没有证据表明干燥的盆地内有残留的池塘或沼泽。如果存在这样的特征，那么它们将是小的、浅的、浑浊的和/或盐分的，因此与今天物种适应的湖泊明显不同。维多利亚湖多种多样的特有生物群的存在必须与无可争辩的地球物理和古生态证据相一致，这一证据表明，维多利亚湖的年龄约为15,000年，而不是相反。
Lingering debate among evolutionary biologists over whether or not Lake Victoria dried out during the late Pleistocene focuses on perceived conflicts between biological and geological evidence for the age of its endemic species. This article reviews and updates the geophysical and paleoecological evidence for lake-wide desiccation and describes the environmental conditions that aquatic species likely experienced during the low stand. Lake Victoria was at its lowest between 18,000 and 14,000 calendar years ago, and it dried out at least once during that time. There is no evidence of remnant ponds or marshes persisting within the desiccated basin. If such features existed, then they would have been small, shallow, turbid, and/or saline, and therefore markedly different from the lake to which today’s species are adapted. The existence of Lake Victoria’s diverse endemic biota must be reconciled with the incontrovertible geophysical and paleoecological evidence of a ca. 15,000 year age for the lake, and not vice versa.
影响因子：
8.3
作者：
STUIVER, M;REIMER, PJ
通讯作者：
REIMER, PJ