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, Department of Biology and Environmental Science, Kalmar, Sweden, (3)University of Hawai'i at Mānoa, Department of Oceanography, Honolulu, United States