Date of Award

2021-08-01

Degree Name

Doctor of Philosophy

Department

Biological Sciences

Advisor(s)

Anthony Darrouzet-Nardi

Abstract

Degradation in dryland regions is a persistent and accelerating problem. Though the mechanisms that initiate and maintain dryland degradation have been well studied, restoring productivity and function to degraded dryland ecosystems remains difficult. Here, I present three chapters that address gaps in our understanding of dryland functions and our ability to restore them. I begin by examining how dryland restoration research has addressed altered biogeochemical cycling in drylands and how to expand current understandings of dryland biogeochemistry into restoration. I then present two chapters that explore mechanistic and quantitative understandings of the contribution of biocrusts to soil nutrient cycling both now and under altered precipitation regimes. Taken together, this Dissertation contributes to highlighting the overlap between biogeochemical understandings in drylands and efforts to restore altered biogeochemical landscapes within degraded regions.

Language

en

Provenance

Recieved from ProQuest

File Size

145 p.

File Format

application/pdf

Rights Holder

Kristina Young

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