Wind as a long-distance dispersal vehicle in the Southern Hemisphere
Wind as a long-distance dispersal vehicle in the Southern Hemisphere
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DOI：
10.1126/science.1095210
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发表时间：
2004-05-21
期刊：
影响因子：
56.9
通讯作者：
Martínez, I
中科院分区：
文献类型：
--
作者：
Muñoz, J;Felicísimo, AM;Martínez, I
风的各向异性（方向依赖）长距离扩散（LDD）被用来解释南半球陆地之间的强烈植物区系亲缘关系。由于以前缺乏全球风数据，其贡献尚未得到系统的检验。我们使用来自美国国家航空航天局SeaWinds散射仪的全球风覆盖来测试南半球苔藓，苔类，地衣和蕨类植物区系的植物区系相似性是否更好地符合（i）各向异性LDD假设，该假设预测通过“风公路”连接增加植物区系相似性，或（ii）方向无关LDD假设，该模型预测，地点之间的植物区系相似性随着地理位置的接近而增加。我们发现了一个更强的相关性与风的连接比地理邻近，这支持了风是一种传播工具，许多生物在南半球的想法。
Anisotropic (direction-dependent) long-distance dispersal (LDD) by wind has been invoked to explain the strong floristic affinities shared among landmasses in the Southern Hemisphere. Its contribution has not yet been systematically tested because of the previous lack of global data on winds. We used global winds coverage from the National Aeronautics and Space Administration SeaWinds scatterometer to test whether floristic similarities of Southern Hemisphere moss, liverwort, lichen, and pteridophyte floras conform better with (i) the anisotropic LDD hypothesis, which predicts that connection by "wind highways" increases floristic similarities, or (ii) a direction-independent LDD hypothesis, which predicts that floristic similarities among sites increase with geographic proximity. We found a stronger correlation of floristic similarities with wind connectivity than with geographic proximities, which supports the idea that wind is a dispersal vehicle for many organisms in the Southern Hemisphere.