Abstract

The restoration of large-scale heterogeneous landscapes is typically approached using seed-based restoration as a cost-effective means to achieve project goals and objectives. However, seeding is often met with low survival rates primarily driven by low seedling emergence and establishment. This dissertation investigates opportunities to enhance restoration focusing on 1) seed treatments, 2) plant materials, and 3) a synthesis of seeding strategies. • Fungal pathogenesis can cause high seedling mortality. Fungicide seed coatings used in the agriculture industry are novel to wildland restoration. We assess the effect a fungicide seed coating has on the recruitment of Pseudoroegneria spicata seedlings across a broad range of sagebrush-steppe sites. • Sourcing appropriate plant material for restoration seeding is fundamental to long-term restoration success. The Association of Seed Certification Agencies offers a series of certification schemes to facilitate the rapid production, procurement, and distribution of native seeds for restoration. Results from a multi-year study evaluate the recruitment success of three P. spicata germplasms. • The complexities of seed-based restoration are reviewed, exploring the interplay between native plant materials, seed enhancement technologies, and restoration outcomes. This synthesis provides a comprehensive overview of the current state of knowledge, research gaps, and avenues for future restoration research.

Degree

PhD

College and Department

Life Sciences; Plant and Wildlife Sciences

Rights

https://lib.byu.edu/about/copyright/

Date Submitted

2023-12-14

Document Type

Dissertation

Handle

http://hdl.lib.byu.edu/1877/etd13488

Keywords

bet-hedging, dryland restoration, fungicide, germplasm, seed enhancement technologies

Language

english

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