The Southern Ocean biological response to aeolian iron deposition

Journal Article (Academic article)

Biogeochemical rate processes in the Southern Ocean have an important impact on the global environment. Here, we summarize an extensive set of published and new data that establishes the pattern of gross primary production and net community production over large areas of the Southern Ocean. We compare these rates with model estimates of dissolved iron that is added to surface waters by aerosols. This comparison shows that net community production, which is comparable to export production, is proportional to modeled input of soluble iron in aerosols. Our results strengthen the evidence that the addition of aerosol iron fertilizes export production in the Southern Ocean. The data also show that aerosol iron input particularly enhances gross primary production over the large area of the Southern Ocean downwind of dry continental areas.

Full Text

Duke Authors

Cited Authors

  • Cassar, N; Bender, ML; Barnett, BA; Fan, S; Moxim, WJ; Levy II, H; Tilbrook, B

Published Date

  • August 24, 2007

Published In

Volume / Issue

  • 317 / 5841

Start / End Page

  • 1067 - 1070

PubMed ID

  • 17717181

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

International Standard Serial Number (ISSN)

  • 0036-8075

Digital Object Identifier (DOI)

  • 10.1126/science.1144602


  • eng