Prinzing Andreas, Reiffers Reineke, Braakhekke Wim G, Hennekens Stephan M, Tackenberg Oliver, Ozinga Wim A, Schaminée Joop H J, van Groenendael Jan M
Department Ecology, Radboud University, Toernooiveld 1, 6525ED Nijmegen, The Netherlands.
Ecol Lett. 2008 Aug;11(8):809-19. doi: 10.1111/j.1461-0248.2008.01189.x.
Functional diversity within communities may influence ecosystem functioning, but which factors drive functional diversity? We hypothesize that communities assembled from many phylogenetic lineages show large functional diversity if assembly is random, but low functional diversity if assembly is controlled by interactions between species within lineages. We combined > 9000 descriptions of Dutch plant communities, a species-level phylogeny, and information on 16 functional traits (including eight dispersal traits). We found that all traits were conserved within lineages, but nevertheless communities assembled from many lineages showed a smaller variation in trait-states of most traits (including dispersal traits) than communities assembled from few lineages. Hence, within lineages, species are not randomly assembled into communities, contradicting Neutral Theory. In fact, we find evidence for evolutionary divergence in trait-states as well as present-day mutual exclusion among related, similar species, suggesting that functional diversity of communities increased due to past and present interactions between species within lineages.
群落内部的功能多样性可能会影响生态系统功能，但哪些因素驱动功能多样性呢？我们假设，如果群落组装是随机的，那么由许多系统发育谱系组装而成的群落会表现出较大的功能多样性，但如果组装受谱系内物种间相互作用控制，则功能多样性较低。我们结合了9000多个荷兰植物群落的描述、一个物种水平的系统发育以及16个功能性状（包括8个扩散性状）的信息。我们发现所有性状在谱系内都是保守的，但由许多谱系组装而成的群落，在大多数性状（包括扩散性状）的性状状态上，比由少数谱系组装而成的群落表现出更小的变异。因此，在谱系内，物种并非随机组装成群落，这与中性理论相矛盾。事实上，我们发现了性状状态进化分歧以及当今相关相似物种间相互排斥的证据，这表明群落的功能多样性因谱系内物种过去和现在的相互作用而增加。
