It’s about time: the role of genetic variation in phenology in an aquatic ecosystem.
It’s about time: the role of genetic variation in phenology in an aquatic ecosystem.
复制标题
是时候了：遗传变异在水生生态系统物候中的作用。
DOI：
10.1111/fwb.12872
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发表时间：
2017
影响因子：
2.7
通讯作者：
G.
中科院分区：
文献类型：
--
作者：
Rodrigue-Cabal;M.;Barrios-Garcia;M N.;Rudman;S.;McKnown;A.;Sato;T. & Crutsinger;G.
物候，或生命周期事件的时间，是生物的一个关键特征，对群落的组装和生态系统的功能具有重要意义。虽然在过去的十年里，由于气候变化，植物的物候变化受到了越来越多的关注，但我们才刚刚开始了解这些物候特征的遗传变异对生态相互作用和生态系统水平过程的作用。树种对河岸环境的影响为了解陆生物种的物候对水生生态系统的影响提供了一个有趣的系统。在这里，我们使用了一个占主导地位的河岸树（杨：杨柳科）和测试种内的遗传变异的物候时间的落叶，这影响了叶凋落物输入到我们的实验水生生态系统。我们的实证结果发现，基因型差异杨.杨解释了很大的变化都在叶凋落物分解和水生无脊椎动物物种丰富度在我们的实验池塘。此外，我们的研究结果表明，叶凋落物输入时间的变化超过了叶凋落物质量的变化对水生无脊椎动物物种丰富度的影响，总的来说，我们的研究结果表明，优势植物物种的凋落物输入时间的遗传变异可能是一个强大的潜在机制，驱动凋落物分解和水生生态系统中的无脊椎动物群落。这强调了忽略物候学的研究可能会大大低估社区和生态系统中重要和可变的组成部分。
Phenology, or the timing of life cycle events, is a key trait of organisms that has significance for how communities are assembled and ecosystems function. Although variation in phenology in plants has received increased attention over the past decade as a result of changing climate, we are only beginning to understand the role of genetic variation in these phenological traits on ecological interactions and ecosystem‐level processes.The influence of tree species on riparian environments presents an interesting system for understanding the effects of phenology in terrestrial species on aquatic ecosystems. Here, we used a dominant riparian tree (Populus trichocarpa: Salicaceae) and tested intraspecific genetic variation in the phenological timing of leaf drop, which influenced leaf‐litter inputs into our experimental aquatic ecosystems.Our empirical results found that genotypic differences inP. trichocarpaexplained much of the variation both in leaf‐litter decomposition and aquatic invertebrate species richness within our experimental ponds. Moreover, our results showed that variation in the timing of leaf‐litter inputs outweighed the effects of variation in leaf‐litter quality amongP. trichocarpagenotypes on aquatic invertebrate species richness.Taken together, our results suggest that genetic variation in the timing of litter inputs from dominant plant species is likely to be a strong underlying mechanism driving litter decomposition and invertebrate communities in aquatic ecosystems. This emphasises that studies disregarding phenology may significantly underestimate an important and variable component in communities and ecosystems.