Posted March 27, 2025 · Submitted by Amara Okeke, University of Cape Town
Whether grazing management can durably enhance soil carbon storage remains contested. We report a three-year replicated field experiment contrasting continuous and rotational grazing on semi-arid grassland. Rotational grazing significantly increased mineral-associated organic carbon within the upper thirty centimetres of soil without compromising forage productivity. Stable-isotope tracing indicates that these gains were driven by enhanced root turnover rather than aboveground litter inputs, suggesting that targeted management can meaningfully augment stable, long-lived carbon pools.
Amara Okeke, Sofia Reyes (2025). Soil Organic Carbon Stabilization under Regenerative Grazing: A Three-Year Field Trial. TerraNova preprint.
Amara Okeke, Priya Nair
Excessive groundwater extraction drives land subsidence that compounds relative sea-level rise across low-lying, rapidly urbanising deltas. Combining satellite geodesy with piezometric records, we map subsidence rates and attribute them to…
Read preprint →Amara Okeke, Priya Nair, Liam O'Connor
Accurate monitoring of coastal wetland extent is hindered by gradual, sub-pixel land-cover transitions that conventional classification methods fail to capture. We train a convolutional segmentation model to map wetland extent across four d…
Read preprint →