AGU 2025 – Where Science Connects Us
MORE INFORMATION ON PSEUDOSANDS
I. Main issue
Texture is based on the total desintegration of soil units – but in contrast – does not refelct the effective texture we need to understand soil functions (like water infiltration or carbon turnover) or even be able to modell it.
II. Need for a framework
We need a framework to systematically research stability and functionality of pseudosands to better understand inner and outer surface properties. Potential steps to be considered:
1) sample collection, 2) sieving intesity and energy input, 3) size fractionation (& density fractionation ?) , 4) MECHANICAL STABILITY TO CRUSHING, 5) binding agents properties (for carbonates: concentration| for organic carbon: functional groups | for (hydro-)oxides: redox-potential and solubility
III. Physical and hydrological properties
Surface propeteis reflect wettability propertis and matric potential….
IV. Intra- and interaggregate porosity
Outer surfaces
Densest material (Ti)
Pores network (color = size)
But what about the interaggregate connection or pore connectivity? THIS IS STILL ONGOING WORK! STAY TUNED!
Other publications of my PRODIGISTA peers
- Callo-Concha, D., and O. Frör (2025) Resilience and tipping points in social-ecological systems of the southwestern Amazon: a participatory systems analysis. Ecology and Society 30(4):50.
https://doi.org/10.5751/ES-16624-300450 - Anne-Katrin Broocks, Hermann F Jungkunst and Joel Peña Valdeiglesias (2025), Knowledge tipping points: Co-creating rainforest futures, Open Access Government October 2025, pp. 394-395.
https://www.openaccessgovernment.org/article/knowledge-tipping-points-co-creating-rainforest-futures/198697/. - Díaz García, E., Boy, D., Kilian Salas, S., Andrino de la Fuente, A., Sauheitl, L., Poehlein, A., Guggenberger. G. , Horn, M.A., & Boy, J. (2025) Adaptation and Resistance of Prokaryotic Communities in Soils Under Old-Growth Forest and Pasture to Drought Intensification. Frontiers in Plant Science.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5279930 - Mathäss, P., Callo-Concha, D., & Frör, O. (2025). Are more roads needed? NTFP extractivism and the infrastructure dilemma in the southwestern Amazon. PLOS Sustainability and Transformation, 4(6), e0000175.
https://journals.plos.org/sustainabilitytransformation/article?id=10.1371/journal.pstr.0000175