Science. 1979 Feb 16;203(4381):658-60. doi: 10.1126/science.203.4381.658.
Analysis of the clone structures within a population of Spartina patens reveals considerable adaptive genetic divergence among adjacent dune, swale, and marsh sites. The dune subpopulation includes a small number of frequently encountered, spatially isolated clones that follow microtopography and have high reproductive output and colonizing potential. The marsh subpopulation consists of a large number of infrequent interdigitating clones with high vegetative biomass and competitive success. The swale subpopulation is generally intermediate for these traits.
对一片大米草种群内的克隆结构进行分析后发现，毗邻沙丘、洼地和沼泽等不同生境的种群之间存在显著的适应性遗传分异。沙丘种群包含少量较为常见的、空间上孤立的克隆，这些克隆随微地形分布，具有较高的繁殖输出和定植潜力。沼泽种群则以大量不常见的交错克隆为主，具有较高的营养体生物量和竞争成功度。而洼地种群在这些特征上则处于两者之间。
