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Chapter 1. Impacts of the oceans on climate change.
The chapter highlights the need for a comprehensive, adequately funded and globally extensive ocean observing system to be implemented and sustained as a high priority and the extent to which positive feedbacks from the ocean may exacerbate climate change.
Enhancement of the reactive iron pool by marine diatoms
The presence of diatoms appeared to enhance the reactive Fe pool improving the biological availability of Fe and suggested a modification of the Fe speciation in the experiments with C brevis.
The Impacts of the Oceans on Climate Change
Pronounced changes in temperature, salinity (density) and upwelling have occurred in surface and deeper waters of the oceans, contributing with changing patterns and strength of winds to an
The influence of UV irradiation on the photoreduction of iron in the Southern Ocean
An iron enrichment experiment, EisenEx, was performed in the Atlantic sector of the Southern Ocean during the Antarctic spring of 2000. Deck incubations of open ocean water were performed to
On the relevance of iron adsorption to container materials in small-volume experiments on iron marine chemistry: 55Fe-aided assessment of capacity, affinity and kinetics
Abstract Iron chemistry in seawater has been extensively studied in the laboratory, mostly in small-volume sample bottles. However, little has been reported about iron wall sorption in these bottles.
Off-line chromatographic assessment of Fe(II) in seawater.
The presented data shows that waiting time resulted in underestimation up to a factor 10 as measured by direct recovery counting of loaded Fe(II), and suggests that time-modelling may account for all effects, thus permitting off-line counting of Fe( II) without loss of data quality.
A compartmental analysis of the kinetics of iron uptake by two Antarctic diatoms
In the so-called 'High-Nutrient Low-Chlorophyll' (HNLC) regions there are high amounts of basic nutrients (such as carbon, nitrate, phosphate and silicate), but low phytoplankton productivity.
On the use of iron radio-isotopes to study iron speciation kinetics in seawater : A column separation and off-line counting approach
Abstract The determination of unidirectional fluxes of Fe in the seawater Fe-pools requires the use of Fe (radio)isotopes, which in turn necessitates off-line iron counting. To implement new off-line
Diatoms enhance the reactive Fe pool: increasing Fe-photoreduction and light-independent modification of strong Fe-binding ligands
Short term (2 days) laboratory studies showed the modification of Fe speciation in seawater by two open oceanic Antarctic diatom species, Thalassiosira sp. and Chaetoceros brevis. Three light