Chemically and geographically distinct solid-phase iron pools in the Southern Ocean

Mtshali, Thato N2018-03-272018-03-272012-11Von der Heyden, B.P. et al. 2012. Chemically and geographically distinct solid-phase iron pools in the Southern Ocean. Science, vol. 338(6111): 1199-12010036-80751095-9203DOI: 10.1126/science.1227504http://science.sciencemag.org/content/338/6111/1199http://science.sciencemag.org/content/338/6111/1199.fullhttp://hdl.handle.net/10204/10136Copyright: The Authors.Iron is a limiting nutrient in many parts of the oceans, including the unproductive regions of the Southern Ocean. Although the dominant fraction of the marine iron pool occurs in the form of solid-phase particles, its chemical speciation and mineralogy are challenging to characterize on a regional scale. We describe a diverse array of iron particles, ranging from 20 to 700 nanometers in diameter, in the waters of the Southern Ocean euphotic zone. Distinct variations in the oxidation state and composition of these iron particles exist between the coasts of South Africa and Antarctica, with different iron pools occurring in different frontal zones. These speciation variations can result in solubility differences that may affect the production of bioavailable dissolved iron.enIron particlesPhytoplankton growthIron colloidsSouthern Ocean iron particlesIron poolsChemically and geographically distinct solid-phase iron pools in the Southern OceanArticleMtshali, T. N. (2012). Chemically and geographically distinct solid-phase iron pools in the Southern Ocean. http://hdl.handle.net/10204/10136Mtshali, Thato N "Chemically and geographically distinct solid-phase iron pools in the Southern Ocean." (2012) http://hdl.handle.net/10204/10136Mtshali TN. Chemically and geographically distinct solid-phase iron pools in the Southern Ocean. 2012; http://hdl.handle.net/10204/10136.TY - Article AU - Mtshali, Thato N AB - Iron is a limiting nutrient in many parts of the oceans, including the unproductive regions of the Southern Ocean. Although the dominant fraction of the marine iron pool occurs in the form of solid-phase particles, its chemical speciation and mineralogy are challenging to characterize on a regional scale. We describe a diverse array of iron particles, ranging from 20 to 700 nanometers in diameter, in the waters of the Southern Ocean euphotic zone. Distinct variations in the oxidation state and composition of these iron particles exist between the coasts of South Africa and Antarctica, with different iron pools occurring in different frontal zones. These speciation variations can result in solubility differences that may affect the production of bioavailable dissolved iron. DA - 2012-11 DB - ResearchSpace DP - CSIR KW - Iron particles KW - Phytoplankton growth KW - Iron colloids KW - Southern Ocean iron particles KW - Iron pools LK - https://researchspace.csir.co.za PY - 2012 SM - 0036-8075 SM - 1095-9203 T1 - Chemically and geographically distinct solid-phase iron pools in the Southern Ocean TI - Chemically and geographically distinct solid-phase iron pools in the Southern Ocean UR - http://hdl.handle.net/10204/10136 ER -