Dedicated to the substantial contributions of Richard C. Dugdale, grandfather of nitrogen cycling in the ocean, this virtual issue summarizes the trajectory of his career, focusing on seminal papers published in Limnology & Oceanography.

Dedicated to the substantial contributions of Richard C. Dugdale, grandfather of nitrogen cycling in the ocean, this virtual issue summarizes the trajectory of his career, focusing on seminal papers published in Limnology & Oceanography.