当前位置: X-MOL 学术J. Appl. Ecol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Using genomics to design and evaluate the performance of underwater forest restoration
Journal of Applied Ecology ( IF 5.7 ) Pub Date : 2020-06-27 , DOI: 10.1111/1365-2664.13707
Georgina Wood 1 , Ezequiel M. Marzinelli 2, 3, 4 , Adriana Vergés 1, 4 , Alexandra H. Campbell 5 , Peter D. Steinberg 1, 3, 4 , Melinda A. Coleman 6
Affiliation  

  1. Restoration is an emerging intervention to reverse the degradation and loss of marine habitat‐formers and the ecosystem services they underpin. Current best practice seeks to restore populations by transplanting donor individuals chosen to replicate genetic diversity and structure of extant, nearby populations. However, genetic characteristics are rarely empirically examined across generations, despite their potential role in influencing restoration success.
  2. We used genomics to design a restoration program for lost underwater forests of Phyllospora comosa, a dominant forest‐forming macroalga that went locally extinct from reefs off Sydney, Australia. Population genetic diversity and structure of nearby extant populations informed choice of donor sites. We tested whether donor provenance influenced adult transplant survival, condition (via metrics of epibiosis) and the genetic characteristics of recruits at restoration sites.
  3. Extant populations of Phyllospora within a 100‐km radius of Sydney comprised three distinct genetic clusters with similar levels of genetic diversity. We transplanted reproductive adults from two of these sites, with the aim of restoring five Phyllospora forests with levels of genetic structure and diversity similar to donor populations.
  4. Donor provenance influenced survival and condition of transplanted adults and recruitment levels varied significantly among restoration sites. Yet, recruitment was rapid and genetic diversity and structure of the F1 generation resembled extant populations. This likely occurred because transplanted individuals reproduced synchronously and rapidly post‐transplantation, prior to mortality of adult donor transplants.
  5. Synthesis and applications. As restoration and the need to ‘future‐proof’ marine ecosystems increase globally, it will be critical to understand and harness the role of donor provenance, genetic diversity and structure in restoration success. By incorporating ecological and genomic data into restoration design and assessment, this study demonstrates that evidence‐based selection of macroalgal donors can result in F1 generation recruits with similar levels of genetic diversity and structure as extant populations, despite an effect of provenance on transplant survival and condition. This study also highlights the need for ongoing refinement of transplantation techniques to ensure future recruitment success.


中文翻译:

使用基因组学设计和评估水下森林恢复的性能

  1. 恢复是一种新兴的干预措施,旨在扭转海洋栖息地形成者及其所支持的生态系统服务的退化和丧失。当前的最佳实践试图通过移植供体个体的移植来恢复种群,这些供体个体可以复制现存附近种群的遗传多样性和结构。然而,尽管遗传特性在影响恢复成功方面具有潜在的作用,但几代人很少通过经验检验遗传特性。
  2. 我们使用基因组学为丢失的水下Phyllospora comosa森林设计了一个恢复程序,Phyllospora comosa是一种占优势的森林形成大型藻类,在澳大利亚悉尼附近的珊瑚礁上已局部灭绝。人口遗传多样性和附近现存人口的结构决定了供体位点的选择。我们测试了供体来源是否影响成年移植物的存活,状况(通过流行病的度量)和恢复位新兵的遗传特征。
  3. 的现存群体Phyllospora悉尼的100公里半径内由具有遗传多样性的相似水平的三种不同的基因簇。我们从其中两个地点移植了成年繁殖成虫,目的是恢复五种毛竹林,其遗传结构和多样性与供体种群相似。
  4. 供体来源影响成年成活者的生存和状况,并且恢复水平之间的募集水平差异很大。然而,招募迅速,F 1代的遗传多样性和结构类似于现存种群。发生这种情况的原因是,移植的个体在成年供体移植物死亡之前可以快速且同步地繁殖。
  5. 综合与应用。随着全球范围内恢复和对“未来发展”海洋生态系统的需求日益增加,了解和利用捐助者出处,遗传多样性和结构在恢复成功中的作用至关重要。通过将生态和基因组数据纳入恢复设计和评估,这项研究表明,尽管证据来源对移植存活的影响,基于证据的大型藻类供体的选择可以导致F 1代新兵具有与现有种群相似的遗传多样性和结构水平。和条件。这项研究还强调了不断完善移植技术以确保将来募集成功的必要性。
更新日期:2020-06-27
down
wechat
bug