ASIAN, AFRICAN AND EUROPEAN BIOTA MEET AT EVOLUTION-CANYON ISRAEL - LOCAL TESTS OF GLOBAL BIODIVERSITY AND GENETIC DIVERSITY PATTERNS
ASIAN, AFRICAN AND EUROPEAN BIOTA MEET AT EVOLUTION-CANYON ISRAEL - LOCAL TESTS OF GLOBAL BIODIVERSITY AND GENETIC DIVERSITY PATTERNS
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DOI：
10.1098/rspb.1995.0189
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发表时间：
1995-11-22
影响因子：
4.7
通讯作者：
NEVO, E
中科院分区：
文献类型：
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作者：
NEVO, E
生物多样性的分化以及在分子和生物体水平上推动进化的力量和原因的相对重要性需要更严格的测试。在以色列的卡梅尔山的下纳哈勒奥伦的相对山坡上，被命名为“进化之路”，展示了戏剧性的生物对比。南坡（S坡）的太阳辐射量较高，使其在时空上比北坡（N坡）更不均匀、更温暖、更干燥和波动更大。因此，几百米范围内的地方生物多样性差异显示出全球不同的模式。在不同的生物群中（即跨越亚热带），“热带亚洲-非洲”的S-斜坡孕育着非洲和亚洲的旱生热带生物群。S-斜坡是丰富的陆地物种平均，显示较高的遗传多样性比“温带欧洲”的N-斜坡，这是丰富的水生依赖类群。不同生物体的适应性差异在斜坡内和斜坡之间得到了证明。小气候干旱多样性选择似乎在这里一个主要的进化力量，驱动适应性分子和生物进化。目前的研究结果表明，“进化峡谷”提供了一个肥沃的本地测试模型的进化预测。
Biodiversity differentiation and the relative importance of forces and causes driving evolution at the molecular and organismal levels require more critical testing. The opposite slopes of Lower Nahal Oren, Mount Carmel, Israel, designated 'Evolution Canyon', display dramatic biotic Contrasts. Higher solar radiation on the south-facing slope (S-slope) makes it spatiotemporally more heterogeneous, warmer, drier and fluctuating than the north-facing slope (N-slope). Consequently, local biodiversity differentiation across several hundred metres displays globally divergent patterns. In different groups of organisms (i.e. across phylogeny) the 'tropical Asian-African' S-slope harbours African and Asian xeric tropical biota. The S-slope is richer on average in terrestrial species, displaying higher genetic diversity than the 'temperate European' N-slope, which is richer in aquatic-dependent taxa. Adaptive differences in different organisms are demonstrated within and between the slopes. Microclimatic aridity diversifying selection seems here a major evolutionary force that drives adaptive molecular and organismal evolution. Present results suggest that 'Evolution Canyon' provides a fertile local testing model of evolutionary predictions.