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NATIONAL SCIENCE FOUNDATION (2019)

Quantifying the microbial contribution to community recovery from drought

Microbial Recovery Droughts

NATIONAL SCIENCE FOUNDATION

Titre : Quantifying the microbial contribution to community recovery from drought

Organismes NSF : DEB Division Of Environmental Biology

Durée : October 1, 2019 — September 30, 2023 (Estimated)

Résumé
Understanding how ecological communities recover from extreme weather events can improve our ability to manage and enhance their productivity and services. Extreme droughts are predicted to increase in many regions, and may be critically important in arid and semi-arid drylands, which are often more sensitive to drought than wetter ecosystems. This project leverages previously NSF-funded infrastructure for creating experimental drought in dry grasslands in order to determine how much soil microbes aid in the recovery from extreme drought. Prior research has uncovered two key results that have yet to be united in contemporary research. First, drought leaves a legacy in the soil by changing the composition of microbes ; this legacy can persist long after drought has ended. Second, additions of microbes can speed community recovery after disturbance. Combined, these two results suggest that soil microbes could drive the pace of ecological recovery from drought, but experimental studies are needed. This project will use microbial experiments in the field and greenhouse to determine the magnitude of drought impacts on drylands and elucidate how much soil microbes matter to recovery and resilience. This project trains the next-generation of diverse scientists by supporting a female Hispanic postdoctoral researcher, two female graduate students (one Hispanic), and independent research experiences for undergraduates, including partnership with the Southwestern Indian Polytechnic Institute. A new inquiry-based laboratory module reaches biology majors at a Hispanic-serving institution, and a drought-focused K-12 unit enhances next-generation science standards. The project has global importance because drylands occupy a large ( 45%) and rapidly expanding percentage of land area and contribute greatly to global carbon fluctuations. Nearly 40% of people live in the world’s drylands, and improved understanding of the processes by which drylands recover from drought may enable rapid restoration via microbial amendments, delivering new land management strategies.

Partenaire (s) : Jennifer Rudgers (Principal Investigator) Scott Collins (Co-Principal Investigator)

Bureau de recherche parrainé  : University of New Mexico 1 University of New Mexico Albuquerque

Financement : 1 009 923,00 ¤

National Science Foundation

Page publiée le 20 juin 2021