OOS 41 - Fungi and Global Change: Linking Diversity, Community Composition, and Ecosystem Function in a Changing World

Thursday, August 10, 2017: 1:30 PM-5:00 PM
Portland Blrm 256, Oregon Convention Center
Jessica A.M. Moore, University of New Hampshire
Serita D. Frey, University of New Hampshire
Serita D. Frey, University of New Hampshire
Predicting how global change will alter ecosystems is a central challenge in ecology. Soil fungi are major drivers of ecosystem processes, and they respond to global change by reassembling communities and altering activity. In this session, we consider how multiple global changes – including climate, nitrogen deposition, fire, and biotic invasions – affect soil fungal communities and functions. Some ecosystem processes rely heavily upon soil fungi. For example, primary production depends on mycorrhizal fungi, which supply nutrients required for growth to plants. Mycorrhizal species vary how efficiently they take up and transfer soil nutrients to plants. Variation in how mycorrhizal fungal species respond to global change could therefore have an effect on ecosystem net primary productivity. Similarly, organic matter decomposition rates depend on the saprotrophic fungal community. Decomposition is a multi-step process and some fungal species are better equipped to decompose than others. Global changes differentially affecting saprotrophic fungal species can have downstream effects on decomposition rates and soil carbon storage. Ecosystem processes and soil fungi are intricately linked, thus, understanding how soil fungi respond to global change will increase our ability to predict whole ecosystem responses to global change. Our session goal is to reveal general patterns of soil fungal community and functional responses to global change, spanning scales from microbes to whole ecosystems as we link fungal biodiversity to ecosystem nutrient and energy fluxes in a changing world.
1:30 PM
 Warming and nitrogen-addition alter soil fungal communities and rates of organic matter decomposition
Jessica A.M. Moore, University of New Hampshire; Serita D. Frey, University of New Hampshire
1:50 PM
 Don’t miss the microbes for the trees: Anthropogenic N deposition suppresses saprotrophic fungal activity across a northern hardwood forest ecosystem
Zachary B. Freedman, West Virginia University; Karl J. Romanowicz, University of Michigan; Rima A. Upchurch, University of Michigan; Lauren C. Cline, University of Minnesota; Donald R. Zak, University of Michigan
2:10 PM
 Contrasting saprotrophic communities associated with mycorrhizal necromass are governed by melanin content
Christopher W. Fernandez, University of Minnesota; Peter G. Kennedy, University of Minnesota
2:30 PM
 Mismatch in plant-fungal symbiosis alters both above- and belowground processes
Stephanie N. Kivlin, University of New Mexico; Melanie R. Kazenel, Rocky Mountain Biological Laboratory; Joshua S. Lynn, Rocky Mountain Biological Laboratory; Jennifer A. Rudgers, University of New Mexico
2:50 PM
 Fungal associations overwhelm abiotic conditions as drivers of community structure and function
Daniel Maynard, Yale University; Kristofer R. Covey, Yale School of Forestry and Environmental Studies; Thomas Crowther, Netherlands Institute of Ecology; Serita D. Frey, University of New Hampshire; Linda van Diepen, University of Wyoming; Mark A. Bradford, Yale University
3:10 PM
3:20 PM
 Living life up high: How fungi differ between canopy and terrestrial soils in a tropical montane cloud forest
Caitlin I. Looby, University of California, Irvine; Emily C. Heyne, Brown University; Kathleen K. Treseder, University of California, Irvine
3:40 PM
 Fungal responses to historical and contemporary rainfall across spatial and temporal gradients
Christine V. Hawkes, University of Texas at Austin; Hannah E. Giauque, University of Texas; Gabriel Miller, University of Texas at Austin; Jennifer D. Rocca, Duke University; Bonnie Waring, Utah State University
4:00 PM
 Soil fungi and alien plants: Co-invasive networks
Ian A. Dickie, Lincoln University
4:20 PM
 UV radiation stimulates but soil-litter mixing reduces fungal role in dryland litter decomposition
Rebecca L. McCulley, University of Kentucky; Jim A. Nelson, University of Kentucky; Katharine Predick, University of Arizona; Eva M. Levi, University of Arizona; Paul W. Barnes, Loyola University; Heather L. Throop, Arizona State University; Steve R. Archer, University of Arizona
4:40 PM
 Climate change and fire regime: A plant-soil-fire interaction perspective
Benjamin A. Sikes, University of Kansas; Jacob R. Hopkins, University of Kansas/Kansas Biological Station; W. J. Platt, Louisiana State University