Major lithogenic contributions to the distribution and budget of iron in the North Pacific Ocean.

ABSTRACT: Recent studies have elucidated that iron (Fe) is a critical trace metal that influences the productivity of marine ecosystems and the biogeochemical cycles of other elements in the modern ocean. However, our understanding of the biogeochemistry of Fe remains incomplete. Herein, we report basin-scale and full-depth sectional distributions of total dissolvable iron (tdFe), dissolved iron (dFe), and labile particulate iron (lpFe = tdFe - dFe) in the North Pacific Ocean, as observed during three cruises of the GEOTRACES Japan program. We found that lpFe dominates tdFe and is significantly correlated with labile particulate aluminum (lpAl): lpFe [nmol kg^-1] = (0.544 ± 0.005) lpAl [nmol kg^-1] + 0.11 ± 0.04, r² = 0.968, n = 432. The results indicate a major lithog

SUBMITTER: Zheng L 

PROVIDER: S-EPMC6690902 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature