An effort to restore bull kelp along the Sonoma coast has received a $4.9 million boost from the federal government. Information gleaned from a test project in Drakes Bay will be used to guide the work in Sonoma, a joint effort of the Greater Farallones National Marine Sanctuary and the Greater Farallones Association, a nonprofit that supports the sanctuary. Researchers hope their work will help restore a key ecosystem, capture carbon from the atmosphere and…