Wind as a long-distance dispersal vehicle in the Southern Hemisphere

被引:440
作者
Muñoz, J
Felicísimo, AM
Cabezas, F
Burgaz, AR
Martínez, I
机构
[1] Real Jardin Bot, Madrid 28014, Spain
[2] Univ Extremadura, Escuela Politecn, Caceres 10071, Spain
[3] Univ Complutense, Dept Biol Vegetal 1, E-28040 Madrid, Spain
[4] Univ Rey Juan Carlos, Mostoles 28933, Spain
关键词
D O I
10.1126/science.1095210
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页码:1144 / 1147
页数:4
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