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Abstract

This review aims to bring into focus the current understanding of hydrothermal systems and plume dynamics, tracers of hydrothermalism and the contribution of iron from hydrothermal vents to the global oceanic iron budget. The review then explores hydrothermal effect on surface ocean productivity. It is now well documented that scarcity of iron limits the production of chlorophyll-producing organisms in many regions of the ocean that are high in macronutrients. However, it is only recently that hydrothermal inputs have gained recognition as a source of Fe to the deep oceans that may potentially affect surface ocean productivity in some regions. A compilation of iron measurements from hydrothermal vents reveals that although hydrothermal studies measuring iron have increased significantly in recent years, there is still a dearth of data below 40°S. New analytical approaches for tracing iron sources, coupled with increasing sampling coverage of the oceans, is quickly improving knowledge of the effect of hydrothermal sources on biogeochemical cycles, a vital component in predicting future climate scenarios.

Item Type:	Article
Authors/Creators:	Holmes, TM and Chase, Z and Van Der Merwe, P and Townsend, AT and Bowie, AR
Keywords:	hydrothermal, iron, biogeochemistry, review
Journal or Publication Title:	Marine and Freshwater Research
Publisher:	CSIRO Publishing
ISSN:	1323-1650
DOI / ID Number:	https://doi.org/10.1071/MF16335
Copyright Information:	Journal compilation copyright CSIRO 2017
Related URLs:	Google Scholar: Holmes, TM Google Scholar: Chase, Z UTAS Profile: Chase, Z Google Scholar: Van Der Merwe, P UTAS Profile: Van Der Merwe, P Google Scholar: Townsend, AT UTAS Profile: Townsend, AT Google Scholar: Bowie, AR UTAS Profile: Bowie, AR
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