Kathleen Treseder

Kathleen Treseder Kathleen Kay Treseder (born 1972) is an American professor of ecology and evolutionary biology, known for her research on interactions between Climate change global climate change and Fungi fungal ecology. She was elected in 2016 a Fellow of the Ecological Society of America, in 2017 a Fellow of the American Association for the Advancement of Science, and in 2019 a Fellow of the American Society for Microbiology#American Academy of Microbiology American Academy of Microbiology. Quotes Nitrogen (N) enrichment is an element of global change that could influence the growth and abundance of many organisms. In this meta-analysis, I synthesized responses of microbial biomass to N additions in 82 published field studies. I hypothesized that the biomass of Fungus fungi, bacteria or the microbial community as a whole would be altered under N additions. I also predicted that changes in biomass would parallel changes in soil CO2 emissions. Microbial biomass declined 15% on average under Fertilizer#Mechanism N fertilization, but fungi and bacteria were not significantly altered in studies that examined each group separately. Moreover, declines in abundance of microbes and fungi were more evident in studies of longer durations and with higher total amounts of N added. In addition, responses of microbial biomass to N fertilization were significantly correlated with responses of soil CO2 emissions. There were no significant effects of biomes, fertilizer types, ambient N deposition rates or methods of measuring biomass. Altogether, these results suggest that N enrichment could reduce microbial biomass in many ecosystems, with corresponding declines in soil CO2 emissions. Nitrogen additions and microbial biomass: a meta-analysis of ecosystem studies 10.1111/j.1461-0248.2008.01230.x https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1461-0248.2008.01230.x October 2008. Ecology Letters 11 10 1111–1120 In this commentary, I advocate for more detailed incorporation of Arbuscular mycorrhizal arbuscular mycorrhizal (AM) fungi in Earth system science Earth system models, to improve our projections of Climate change global climate change. Current Earth system models display relatively low predictability of Soil carbon soil C stocks, which limit our ability to estimate future climate conditions. A more explicit incorporation of microbial mechanisms can increase the accuracy of ecosystem-scale models that inform the larger-scale Earth system models. Of the numerous microbial groups that can influence soil C dynamics, AM fungi are particularly tractable for integration in models. Arbuscular mycorrhizal fungi are globally abundant and perform critical roles in Carbon cycle C cycling, such as augmentation of net primary productivity and soil C storage. Moreover, AM communities exhibit relatively low diversity within ecosystems, compared to other microbial groups. In addition, global datasets of AM ecology are available for use in model development. Thus, AM communities can be readily simulated in next-generation trait-based models that link microbial diversity to ecosystem function. Altogether, we are well-poised to incorporate the dynamics of individual AM taxa in ecosystem models, which can then be coupled to Earth system models. Hopefully, these efforts would advance our ability to predict and plan for future climate change. Botany Model behavior of arbuscular mycorrhizal fungi: predicting soil carbon dynamics under climate change 94 6 417–423 June 2016 10.1139/cjb-2015-0245 https://utoronto.scholaris.ca/items/fee6b61f-3c3f-498f-989f-44b52904af54 When trees build wood, carbon is incorporated. It takes a long time to decompose ... It’s a smaller scale in Fungus fungi. Some of the material they make can be almost woody. The cell wall is tough to decompose. The cell walls stay in the soil, microscopically. ... It adds up to a lot ... twice as much carbon in the soil as in the Atmosphere of Earth atmosphere, and much of that is in [fungi]. as quoted by David Pace in: Kathleen Treseder: For Kathleen Treseder, HBS’94, the launching pad for her career in science and research was Borneo, the giant, rugged island in Southeast Asia’s Malay Archipelago. School of Biological Sciences, University of Utah 2022 https://www.biology.utah.edu/alumni/kathleen-treseder/ I asked whether Plant strategies Grime's triangle of competitive, stress tolerance and ruderal ecological strategies—which was originally developed for plants—applies to microbes.I conducted a synthesis of empirical studies that tested relationships among microbial traits presumed to define the competitive, stress tolerance and ruderal, and other ecological strategies.There was broad support for Grime's triangle. However, the ecological strategies were inconsistently linked to shifts in Microbial consortium microbial communities under environmental changes like nitrogen and phosphorus addition, warming, drought, etc. We may be missing important ecological strategies that more closely influence microbial community composition under shifting environmental conditions.We may need to start by documenting changes in microbial communities in response to environmental conditions at fine spatiotemporal scales relevant for microbes. We can then develop empirically based ecological strategies, rather than modifying those based on plant ecology.Synthesis. Microbes appear to sort into similar ecological strategies as plants. However, these microbial ecological strategies do not consistently predict how community composition will shift under environmental change. By starting ‘from the ground up’, we may be able to delineate ecological strategies more relevant for microbes. https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2745.14115 September 2023 Ecological strategies of microbes: Thinking outside the triangle Journal of Ecology 111 9 1832–1843 10.1111/1365-2745.14115 External links Category:1972 births Category:Living people Category:Biologists from the United States Category:Ecologists Category:Stanford University alumni Category:University of Pennsylvania faculty Category:Women academics from the United States Category:Women scientists from the United States