Municipalities have expressed interest in learning how others are calculating carbon sequestration, with the aim of incorporating carbon sequestration ecosystem services into their greenhouse gas (GHG) inventories. In the first webinar of this series, Lake Simcoe Conservation Authority and Credit Valley Conservation will present on a range of tools available to calculate the carbon sequestration associated with their natural capital, while also considering how decomposition releases a portion of that stored carbon back into the atmosphere, as well rates associated with native ecosystems in southern Ontario, and examples of how this has informed municipal planning.