Geographical Constraints on the Abundance and Activity of Marine Diazotrophs in the North Pacific

Mary Rose Gradoville1, Hanna Farnelid2, Angelicque E White3, Kendra Turk-Kubo1 and Jonathan P Zehr1, (1)University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States, (2)Linnaeus University, Sweden, (3)Oregon State University, Corvallis, OR, United States