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Science 16 February 1979:
Vol. 203. no. 4381, pp. 658 - 660
DOI: 10.1126/science.203.4381.658
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Articles

Microevolution and Clone Structure in Spartina patens

JOHN A. SILANDER 1

1 Ecology Section, Biological Sciences Group, University of Connecticut, Storrs 06268

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.

Submitted on March 3, 1978
Revised on October 30, 1978


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Science. ISSN 0036-8075 (print), 1095-9203 (online)