Bringing genomics to the field: An integrative approach to seed sourcing for forest restoration

Author:

Prakash Anoob1ORCID,Capblancq Thibaut12,Shallows Kathryn3,Saville David4,Landau Deborah5,Landress Chad6,Jacobs Tal7,Keller Stephen1

Affiliation:

1. Department of Plant Biology University of Vermont Burlington Vermont USA

2. Laboratoire d'Écologie Alpine, Université Grenoble‐Alpes, Université Savoie Mont Blanc, CNRS Grenoble France

3. Central Appalachians Program, The Nature Conservancy Elkins West Virginia USA

4. Appalachian Forest Restoration LLC Morgantown West Virginia USA

5. Maryland/DC Chapter, The Nature Conservancy Bethesda Maryland USA

6. USDA Forest Service, Monongahela National Forest Elkins West Virginia USA

7. Clinch Valley Program, The Nature Conservancy Abingdon Virginia USA

Abstract

AbstractPremiseGlobal anthropogenic change threatens the health and productivity of forest ecosystems. Assisted migration and reforestation are tools to help mitigate these impacts. However, questions remain about how to approach sourcing seeds to ensure high establishment and future adaptability.MethodsUsing exome‐capture sequencing, we demonstrate a computational approach to finding the best n‐sets from a candidate list of seed sources that collectively achieve high genetic diversity (GD) and minimal genetic load (GL), while also increasing evolvability in quantitative traits. The benefits of this three‐part strategy (diversity‐load‐evolvability) are to increase near‐term establishment success while also boosting evolutionary potential to respond to future stressors. Members of The Nature Conservancy and the Central Appalachian Spruce Restoration Initiative planted 58,000 seedlings across 255 acres. A subset of seedlings was monitored for establishment success and variation in growth.ResultsThe results show gains in GD relative to GL and increases in quantitative genetic variation in seedling growth for pooled vs. single‐source restoration. No single “super source” was observed across planting sites; rather, monitoring results demonstrate that pooling of multiple sources helps achieve higher GD:GL and evolvability.DiscussionOur study shows the potential for integrating genomics into local‐scale restoration and the importance of building partnerships between academic researchers and applied conservation managers.

Publisher

Wiley

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