Moving carbon between spheres, the potential oxalate-carbonate pathway of Brosimum alicastrum Sw.; Moraceae

• DOI: 10.1007/s11104-016-3135-3
• Publication Date: 2016-12-17T06:50:59Z
• Authors: Mike C. Rowley; Héctor Estrada-Me...; Magnolia Tzec-Gamboa; Aviram Rozin; Guillaume Cailleau; Eric P. Verrecchia; Iain Green
• Keywords: Biogeochemical Cycle

The Oxalate-Carbonate Pathway (OCP) is a biogeochemical process that transfers atmospheric CO2 into the geologic reservoir as CaCO3; however, until now all investigations on this have focused species with limited food benefits. This study evaluates potential OCP associated Brosimum alicastrum, Neotropical agroforestry (ca. 70–200 kg-nuts yr−1), in calcareous soils of Haiti and Mexico. Enzymatic analysis demonstrated significant concentrations calcium oxalate (5.97 % D.W.) were B. alicastrum tissue sample sites. presence oxalotrophism was also confirmed microbiological analyses both countries. High total (>7 g kg−1) lithogenic carbonate obscured localised alkalinisation identification secondary at most sites, except Ma Rouge, Haiti. Soils adjacent to subjects Rouge an increase pH (0.63) CaCO3 concentration (5.9 %) that, when coupled root-like deposits Mexico, implies does occur soils. Therefore confirms occurs soils, could play fundamental un-accounted role global calcium-carbon cycle.