Where’s the dirt? Scientists surveying sediment in salt marshes
When Brenda Goeden first started working on mud, silt, and sand in the San Francisco Bay two decades ago, dredgers and contractors couldn’t get rid of all the sediment they excavated fast enough. … But today sediment is a hot commodity, as restorationists and developers scramble to elevate salt marshes and building sites before rising tides claim them. Now, a new plan is in the works to optimize allocation of this critical resource.