Provenance translocations of tree species are promoted in forestry, conservation, and restoration in response to global climate change. While this option is driven by adaptive considerations, less is known of the effects translocations can have on dependent communities. We investigated the relative importance and consistency of extended genetic effects in Eucalyptus using two species—E. globulus and E. pauciflora. In E. globulus, the dependent arthropod and pathogen canopy communities were quantified based on the abundance of 49 symptoms from 722 progeny from 13 geographic sub-races across 2 common gardens. For E. pauciflora, 6 symptoms were quantified over 2 years from 238 progeny from 16 provenances across 2 common gardens. Genetic effects significantly influenced communities in both species. However, site and year effects outweighed genetic effects with site explaining approximately 3 times the variation in community traits in E. globulus and site and year explaining approximately 6 times the variation in E. pauciflora. While the genetic effect interaction terms were significant in some community traits, broad trends in community traits associated with variation in home-site latitude for E. globulus and home-site altitude for E. pauciflora were evident. These broad-scale trends were consistent with patterns of adaptive differentiation within each species, suggesting there may be extended consequences of local adaptation. While small in comparison to site and year, the consistency of genetic effects highlights the importance of provenance choice in tree species, such as Eucalyptus, as adaptive divergence among provenances may have significant long-term effects on biotic communities.

为了响应全球气候变化，在林业，保护和恢复中促进了树种的种源易位。尽管此选项是由适应性因素驱动的，但人们对易位对依赖社区的影响知之甚少。我们调查了使用两种物种（E. globulus和E. pauciflora）在桉树中扩展遗传效应的相对重要性和一致性。在E. globulus中，根据2个常见花园中13个地理亚种的722个子代的49个症状的丰富性，对依赖的节肢动物和病原体冠层群落进行了定量。对于E. pauciflora，在2年中，从2个常见花园的16个种源的238个子代中量化了6种症状。遗传效应极大地影响了两个物种的群落。但是，位点和年份的影响大于遗传效应，其中位点解释了大约3倍的大肠杆菌的群落性状的变化，而位点和年份则解释了大约6倍的大肠杆菌的变化。虽然遗传效应交互项是一些社区特质显著，社区特质的大趋势，在家里现场纬度的变化相关联的蓝桉和家庭地点的海拔高度为E.少花显而易见。这些广泛的趋势与每个物种内适应性分化的模式相吻合，表明局部适应可能会产生扩展的后果。与地点和年份相比，遗传效应的一致性虽然很小，但突出了在树种（如桉树）中选择种源的重要性，因为种源之间的适应性差异可能会对生物群落产生重大的长期影响。