Crutsinger Gregory M, Collins Michael D, Fordyce James A, Gompert Zachariah, Nice Chris C, Sanders Nathan J
Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37996, USA.
Science. 2006 Aug 18;313(5789):966-8. doi: 10.1126/science.1128326.
Theory predicts, and recent empirical studies have shown, that the diversity of plant species determines the diversity of associated herbivores and mediates ecosystem processes, such as aboveground net primary productivity (ANPP). However, an often-overlooked component of plant diversity, namely population genotypic diversity, may also have wide-ranging effects on community structure and ecosystem processes. We showed experimentally that increasing population genotypic diversity in a dominant old-field plant species, Solidago altissima, determined arthropod diversity and community structure and increased ANPP. The effects of genotypic diversity on arthropod diversity and ANPP were comparable to the effects of plant species diversity measured in other studies.
理论预测，并且最近的实证研究也表明，植物物种的多样性决定了相关食草动物的多样性，并介导生态系统过程，如地上净初级生产力（ANPP）。然而，植物多样性中一个经常被忽视的组成部分，即种群基因型多样性，也可能对群落结构和生态系统过程产生广泛影响。我们通过实验表明，增加优势老芒麦属植物高一枝黄花的种群基因型多样性，可决定节肢动物的多样性和群落结构，并提高地上净初级生产力。基因型多样性对节肢动物多样性和地上净初级生产力的影响与其他研究中测量的植物物种多样性的影响相当。
