{"id":4756,"date":"2026-07-12T10:34:13","date_gmt":"2026-07-12T10:34:13","guid":{"rendered":"https:\/\/eucface.hieresearch.org\/?page_id=4756"},"modified":"2026-07-27T07:31:55","modified_gmt":"2026-07-27T07:31:55","slug":"soil-carbon-pools-and-dynamics","status":"publish","type":"page","link":"https:\/\/eucface.hieresearch.org\/index.php\/soil-carbon-pools-and-dynamics\/","title":{"rendered":"Soil carbon pools and dynamics"},"content":{"rendered":"\t\t
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Soil carbon pools and dynamics<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Project team:<\/b>\u00a0Anna Favaro (University of Sydney); Feike Dijkstra (University of Sydney), Paola Pisetta Raupp (Western Sydney University), Yolima Carrillo (Western Sydney University)<\/p>

Project period:<\/b> 2024 – ongoing<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tYou can find contacts to the Western Sydney University members of the project here<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Summary<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Understanding the drivers and mechanisms underpinning the carbon dynamics, including its formation, accumulation, decomposition, and priming. \u00a0I mostly focus on the measurement of C pools (MAOM and POM) and their nutrient contents (i.e., stoichiometric ratios). As a part of one of my studies, I’ve also measured root biomass and root morphological traits and conducted a vegetation assessment of the understorey plant community.\u00a0<\/i><\/p>

The first paper was a comparison between data from June 2012 and data from June 2024; the second paper consists of measurements\/observation take\/made in January, June, and September 2025.<\/em><\/p>

Overall, my research at EucFACE has focused\/focuses on understanding the drivers and mechanisms underpinning the C dynamics, including its formation, accumulation, decomposition, and priming.<\/em><\/p>

Findings so far<\/u>: Main finding paper 1 (published): 12 years of eCO2<\/sub>\u00a0caused significant decreases in MAOM-total C, MAOM-organic N, and MAOM-organic P compared to ambient aCO2<\/sub>, but no effects on C, organic N, and organic P in POM. This suggests that the increased belowground C inputs under eCO2<\/sub>,\u00a0in combination with low soil P availability, triggered a rhizosphere priming effect on the MAOM pool.<\/i><\/p>

Main finding paper 2 (on the way): eCO2\u00a0caused significant decreases in MAOM-C and POM-C formation. Although CO2\u00a0did not cause significant changes in root biomass and root morphological traits, root parameters were associated with MAOM-C and POM-C formation. We explain the decrease in MAOM-C formation under eCO2 by a shift from a direct sorption pathway\u00a0towards a less efficient in vivo microbial turnover pathway, whereby C is lost through microbial decomposition before microbial residues contribute to MAOM-C formation.\u00a0<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Publications<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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One manuscript has been published, and the second one is on the way (almost finalised, and I hope to submit to a journal by the end of February).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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You are welcome to take part in discussions about the research topic below. To start click a desired topic below.\u00a0To prevent spam we ask you to create an account. You do this by clicking a topic and then hit the Login<\/strong> button. Then an option to create an account will appear.\u00a0<\/span><\/p>

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