SEED MASS AND DISPERSAL CAPACITY IN WIND-DISPERSED DIASPORES

被引：195

作者：

GREENE, DF

JOHNSON, EA

机构：

[1] UNIV CALGARY, KANANASKIS FIELD STN, CALGARY T2N 1N4, ALBERTA, CANADA

[2] UNIV CALGARY, DEPT BIOL SCI, DIV ECOL, CALGARY T2N 1N4, ALBERTA, CANADA

来源：

OIKOS | 1993年 / 67卷 / 01期

关键词：

D O I：

10.2307/3545096

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Is there necessarily a trade-off between seed size (mass) and dispersal capacity for wind-dispersed diaspores? Within three families (Pinaceae, Aceraceae, and Leguminosae) with asymmetric samaras, shape is maintained (isometry) despite size change. Consequently, within these three families, equilibrium descent velocity is proportional to samara mass raised to the 1/6 power and, necessarily, larger samaras are more poorly dispersed.

引用

页码：69 / 74

页数：6