Long-term carbon sequestration as woody biomass in oaks is decoupled from photosynthesis and more sensitive to climate change.

Coastal scrublands of the South Coast Ecoregion - Rowena Forest/Cal Geographic, 2025 When removing political and international borders, the biogeographic and physiographic continuity of the ecosystem mosaic between southern California and Baja California is obvious. Unfortunately, political boundaries are real obstacles to biological connectivity, as well as to research and conservation. This is especially stark along the US-Mexico borderlands, but California’s historic habitats persist in fragility, and vigilant bi-national monitoring is vital to the survival of the southern native landscapes of the California Floristic Province.