A Decade of Altered Temperature Affects Soil Fungal Communities Matt Belus Dr. Bruce Hungate, Dr. George Koch, Rebecca Mau Northern Arizona Department.

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Presentation transcript:

A Decade of Altered Temperature Affects Soil Fungal Communities Matt Belus Dr. Bruce Hungate, Dr. George Koch, Rebecca Mau Northern Arizona Department of Biological Sciences

NASA and Climate Change NASA’s Mission: Drive advances in science, technology, aeronautics, and space exploration to enhance knowledge, education, innovation, economic vitality, and stewardship of Earth. Space is vast and not fully understood, but so are the soils on Earth.

Climate Change and Soil Fungi Soils are the largest terrestrial carbon reservoir. Soils act as a sink and a source for carbon. Soils contain diverse microbial communities. Microbes, such as fungi, can influence nutrient cycles. Image Credit: U.S. DOE, Biological and Environmental Research Information System.

Research Question How will long-term warming affect soil fungal communities?

EcosystemElevation (m) Mean Annual Temperature (°C) Mixed conifer2, Ponderosa pine 2, Pinyon-juniper2, Desert Grassland 1,

Methods Soil samples were taken in Genomic DNA was extracted from soils. 454 Pyrosequencing of the Internal Transcribed Spacer (ITS) region of ribosomal DNA (rDNA). Data were analyzed with Quantitative Insights into Microbial Ecology (QIIME) and PCoRD statistical packages.

Species Richness SourceSSFp Ecosystem Treatment Ecosystem*Treatment

Experimental warming alters soil fungal communities Mixed Conifer Ponderosa Pine Piñon-Juniper Desert Grassland SourceSSFp Ecosystem Transplant Interac Two Way perMANOVA

Big Picture Long-term warming causes a community shift in soil fungal communities. Plant community composition has changed over 10 years (Wu et al. 2012). Fungal communities responses to warming are consistent with plant responses and might be influencing each other. Warming has created a niche for new fungal communities. Changes in fungal taxa can have effects on ecosystem processes.

Acknowledgements Dr. Hungate and Dr. Koch Dr. Nancy Johnson Andrew Krohn and EnGGen Becky Mau, Theresa McHugh, and Ember Morrissey, Michaela Hayer, and Bo Stevens The Center for Ecosystem Science and Society Undergraduate Research Experience in Global Climate Change Science at Northern Arizona University NAU NASA Space Grant

Fungal Abundance SourceSSF p Ecosystem1.57E Transplant4.26E Ecosystem*Treatment1.05E