I am currently studying the ecology of denitrifiers using a combination of phylogenetics and metagenomic meta-analyses. This work is relevant for disentangling how nitrogen is cycled through ecosystems and its susceptibility to loss via production of the greenhouse gas nitrous oxide or leaching, whether it be in fertilized agricultural fields or low nutrient oceans.
I have been a postdoctoral researcher in the Soil Microbiology group since 2021, and am supervised by Sara Hallin. I previously studied the role of stoichiometric limitation on plant and soil responses to climate warming in the tundra with Seeta Sistla at Cal Poly, and the physiological responses of soil bacteria to long- and short-term warming.
Mara Alicke - Bachelor thesis (summer/autumn 2022)
* indicates supervised student
22. Domeignoz‐Horta LA, Pold G, Erb H*, Sebag D, Verrecchia E, Northern T, Louie K, Eloe‐Fadrosh E, Pennacchio C, Knorr MA, Frey SD, Melillo JM, DeAngelis KM. 2023. Substrate availability and not thermal‐acclimation controls microbial temperature sensitivity response to long term warming. Global Change Biology. 29(6), 1574-1590.
21. Baillargeon N*, Pold G, Natali S, Sistla S. 2022. Lowland tundra plant stoichiometry is somewhat resilient decades following fire despite substantial and sustained shifts in community structure. Arctic, Antarctic and Alpine Research. 54(1), 525-536.
20. McKay O*, Pold G, Martin P, Sistla S. 2022. Macroplastic Fragment Contamination of Agricultural Soils Supports a Distinct Microbial Hotspot. Frontiers in Environmental Science. 10, 838455
19. Pold G, Kwiatkowski BL, Rastetter EB, and Sistla S. 2022. Sporadic P limitation constrains microbial growth and facilitates SOM accumulation in the stoichiometrically coupled, acclimating microbe–plant–soil model. Soil Biology and Biochemistry. 165, 108489.
18. Pold G, Baillargeon N*, Lepe A*, Rastetter E, and Sistla, S. 2021. Warming effects on arctic tundra biogeochemistry are limited but habitat-dependent: a meta-analysis. Ecosphere. 12 (10), e03777
17. Pold G, Schimel JS, Sistla SA. 2021. Soil bacterial communities vary more by season than with over two decades of experimental warming in Arctic tussock tundra. Elementa: Science of the Anthropocene. 9(1).
16. Morrow MA, Pold G, DeAngelis KM. 2020. Draft Genome Sequence of a terrestrial Planctomycetes, Singulisphera sp. GP187, Isolated from Forest Soil. Microbiology Resource Announcements. 9:e00956-20.
15. Pold G, Domeignoz-Horta LA, DeAngelis KM. 2020. Heavy and wet: evaluating the validity and implications of assumptions made when measuring growth efficiency using 18O water. Elementa. 8 (1): 069 (Part of PhD thesis)
14. Liu XJ, Pold G, Domeignoz-Horta LA, Caris H, Nicolson H, Mishra B, Kemner KM, Frey SD, Melillo JM, DeAngelis KM. 2020. Soil aggregate-mediated microbial responses to long-term warming. Soil Biology and Biochemistry. (108055)
13. DeAngelis KM., Pold G. 2020. Genome Sequences of Frankineae sp. Strain MT45 and Jatrophihabitans sp. Strain GAS493, Two Actinobacteria Isolated from Forest Soil. Microbiology Resource Announcements (9):38.
12. Domeignoz-Horta LA, Pold G, Liu XJ, Frey SD, Melillo JM, DeAngelis KM. 2020. Microbial diversity drives CUE in a model soil system. Nature Communications. (11):3684
11. Pold G, Sistla SA, and KM DeAngelis. 2019. Metabolic tradeoffs and heterogeneity in microbial responses to temperature determine the fate of litter carbon in a warmer world. Biogeosciences. 16, 4875–4888. (Part of PhD thesis)
10. Pold G, Domeignoz-Horta LA, Sistla SA, Morisson EW, Frey SD, DeAngelis KM. (2020) Carbon use efficiency and its temperature sensitivity co-vary in soil bacteria. MBio. doi: 10.1128/mBio.02293-19 (Part of PhD thesis)
9. Domeignoz Horta L, DeAngelis KM, Pold G (2018) Draft Genome Sequence of Acidobacteria group 1 Acidipila sp. EB88 isolated from forest soil. Microbiology Resource Announcements.
8. Pold G, Conlon EM, Huntemann M, Pillay M, Mikhailova N, Stamatis D, T.B.K. Reddy, Daum C, Shapiro N, Kyrpides N, Woyke T, KM DeAngelis (2018). Genome sequence of Verrucomicrobium sp. strain GAS474, a novel bacterium isolated from soil. Genome Announcements.
7. Pold G, Huntemann M, Pillay M, Mikhailova N, Stamatis D, T.B.K. Reddy, Daum C, Shapiro N, Kyrpides N, Woyke T, KM DeAngelis (2018). Draft genome sequences of three strains of a novel Rhizobiales species isolated from forest soil. Genome Announcements.
6. Melillo JM, Frey SD, DeAngelis KM, Werner WJ, Bernard MJ, Bowles FP, Pold G, Knorr MA, and AS Grandy. (2017) Long-term pattern and magnitude of soil carbon feedback to the climate system in a warming world. Science. 358(6359):01-105.
5. Pold G, Grandy AS, Melillo JM, and KM DeAngelis. (2017) Changes in substrate availability drive carbon cycle response to chronic warming. Soil Biology and Biochemistry. 110 (68-78)
4. Pold G, Billings AF, Blanchard JL, Burkhardt DB, Frey SD, Melillo JM, Schnabel J*, van Diepen LTA and DeAngelis KM (2016) Long-term warming alters carbohydrate degradation potential in temperate forest soils. Applied and Environmental Microbiology. 82(22):6518-6530.
3. Smith NG, Pold G, Goranson CE, Dukes J (2016) Characterizing the drivers of seedling leaf gas exchange responses to warming and altered precipitation: indirect and direct effects AOB Plants. 8: plw066
2. Pold G, Melillo JM and DeAngelis KM (2015) Two decades of warming increases diversity of a potentially lignolytic bacterial community. Frontiers in Microbiology. 6:480.
1. DeAngelis KM, Pold G, Topçuoğlu BD, van Diepen LTA, Varney RM, Blanchard JL, Melillo JM and SD Frey (2015) Long-term forest soil warming alters microbial communities in temperate forest soils. Frontiers in Microbiology. 6:104.
Research review articles and book chapters:
2. DeAngelis KM, Roy Chowdhury P, Pold G, Romero-Olivares AL, Frey S (2019). Microbial responses to experimental soil warming: Five testable hypotheses. Book chapter in: Ecosystem Consequences of Soil Warming. Edited by J. Mohan.
1. Pold, G. and DeAngelis, KM. (2013). Up Against The Wall: The Effects of Climate Warming on Soil Microbial Diversity and The Potential for Feedbacks to The Carbon Cycle. Diversity. 5(2),409-425.