De Meester Luc, Louette Gerald, Duvivier Cathy, Van Damme Celien, Michels Erik
Laboratory of Aquatic Ecology, K. U. Leuven, Charles de Bériotstraat 32, 3000 Leuven, Belgium.
Oecologia. 2007 Aug;153(2):431-40. doi: 10.1007/s00442-007-0721-3. Epub 2007 Apr 6.
We conducted an outdoor container experiment to test the hypothesis that the genetic composition of resident populations influences the establishment success of immigrant species. We manipulated the genetic compositions (source populations) of populations of the water flea Daphnia magna, a strong competitor in pond and shallow lake zooplankton communities, and monitored the establishment success of immigrant cladoceran species of a regional species pool. We show that establishment success is affected by the source population of the resident D. magna as well as by the presence/absence of macrophytes and the presence/absence of fish in the containers. Our results provide evidence that the genetic composition of resident populations can impact community assembly and metacommunity dynamics, and that community genetics can influence ecosystem functioning.
我们进行了一项室外容器实验，以检验以下假设：本地种群的遗传组成会影响外来物种的定殖成功率。我们操控了大型溞（Daphnia magna）种群的遗传组成（源种群），大型溞是池塘和浅水湖泊浮游动物群落中的强大竞争者，同时监测了区域物种库中外来枝角类物种的定殖成功率。我们发现，定殖成功率受到本地大型溞的源种群影响，也受到容器中大型植物的有无以及鱼类的有无影响。我们的结果提供了证据，表明本地种群的遗传组成会影响群落组装和集合群落动态，并且群落遗传学可以影响生态系统功能。
