title: New perspectives on nitrogen-fixing microorganisms in tropical and subtropical oceans.
abstract: New molecular and microscopic evidence indicates that the open ocean harbors a diverse range of novel free-living and symbiotic nitrogen-fixing microorganisms. Although the extent to which these microorganisms fix nitrogen is currently unclear, ongoing research indicates that they might make a substantial contribution to the open ocean nitrogen budget.
authors.affiliation: Ocean Sciences Dept, University of California, 1156 High Street, Santa Cruz, CA 95064, USA. zehrj@cats.ucsc.edu
authors.forename: J P
authors.initials: JP
authors.lastname: Zehr
authors.forename: E J
authors.initials: EJ
authors.lastname: Carpenter
authors.forename: T A
authors.initials: TA
authors.lastname: Villareal
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000378:metabolism*; D000458:Cyanobacteria / Q000378:metabolism; D009586:Nitrogen Fixation; D009792:Oceans and Seas; D012623:Seawater / Q000382:microbiology*; D013559:Symbiosis; D014329:Tropical Climate; D014871:Water Microbiology