Contrasting effects of tree species and genetic diversity on the leaf-miner communities associated with silver birch
Contrasting effects of tree species and genetic diversity on the leaf-miner communities associated with silver birch
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DOI：
10.1007/s00442-019-04351-x
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发表时间：
2019-03-01
期刊：
影响因子：
2.7
通讯作者：
Koricheva, Julia
中科院分区：
文献类型：
--
作者：
Barantal, Sandra;Castagneyrol, Bastien;Koricheva, Julia
植物群落的物种多样性和遗传多样性都可以影响食草昆虫，但少数研究在同一实验背景下比较了两种多样性水平的影响。我们比较了树种和遗传多样性的影响，丰富度，物种丰富度和多样性的潜叶鸟社区与银桦使用两个长期的森林多样性实验在芬兰，桦树种植在单一栽培和混合物的桦树基因型或其他树种。尽管在树木水平上，桦树基因型之间潜叶虫的丰度和物种丰富度存在差异，但在样地水平上，桦树遗传多样性对潜叶虫的丰度和物种丰富度没有显着影响。相反，桦树的遗传多样性影响叶矿工多样性与物种营业额较高的树木之间的基因型混合物比单克隆地块内的树木。在样地水平上，乔木物种多样性对潜叶蛾的丰度和物种丰富度都有显著的负效应，但对潜叶蛾多样性没有影响。只有在高密度的样地中，才发现树种多样性对潜叶蝇丰度和物种丰富度的显著影响。我们已经证明，植物物种和遗传多样性在构建相关的食草动物群落中发挥着重要但截然不同的作用。树种多样性对矿工丰度和物种丰富度有很大影响，而树种遗传多样性对矿工多样性有很大影响.这些结果对林地的保护和管理具有重要意义。
Both species and genetic diversity of plant communities can affect insect herbivores, but a few studies have compared the effects of both diversity levels within the same experimental context. We compared the effects of tree species and genetic diversity on abundance, species richness, and -diversity of leaf-miner communities associated with silver birch using two long-term forest diversity experiments in Finland where birch trees were planted in monocultures and mixtures of birch genotypes or other trees species. Although both abundance and species richness of leaf miners differed among birch genotypes at the tree level, birch genetic diversity had no significant effect on miner abundance and species richness at the plot level. Instead, birch genetic diversity affected leaf-miner -diversity with species turnover being higher among trees within genotypic mixtures than among trees within monoclonal plots. In contrast, tree species diversity had a significant negative effect on both leaf-miner abundance and species richness at plot level, but no effect on miner -diversity. Significant tree species diversity effects on leaf-miner abundance and species richness were found only in plots with high tree density. We have demonstrated that plant species and genetic diversity play important but contrasting roles in structuring associated herbivore communities. Tree species diversity largely affects miner abundance and species richness, whereas tree genetic diversity affects miner -diversity. These results have important implications for conservation and management of woodlands.