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Nutrient enrichment can increase the susceptibility of reef corals to bleaching
Mass coral bleaching, resulting from the breakdown of coral-algal symbiosis has been identified as the most severe threat to coral reef survival on a global scale. Regionally, nutrient enrichment ofExpand
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Onset of recent rapid sea-level rise in the western Atlantic Ocean
A high-resolution record of sea-level change spanning the past 1000 years is derived from foraminiferal and chronological analyses of a 2 m thick salt-marsh peat sequence at Chezzetcook, Nova Scotia,Expand
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The distribution and stabilisation of dissolved Fe in deep-sea hydrothermal plumes
We have conducted a study of hydrothermal plumes overlying the Mid-Atlantic Ridge near 5° S to investigate whether there is a significant export flux of dissolved Fe from hydrothermal venting to theExpand
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Large-scale distribution of Atlantic nitrogen fixation controlled by iron availability
Oceanic fixed-nitrogen concentrations are controlled by the balance between nitrogen fixation and denitrification1, 2, 3, 4. A number of factors, including iron limitation5, 6, 7, can restrictExpand
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Attenuation of sinking particulate organic carbon flux through the mesopelagic ocean
Significance A key factor regulating the air−sea balance of carbon dioxide (CO2) is the sinking of particles containing organic carbon from the surface to the deep ocean. The depth at which thisExpand
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Hydroxamate siderophores: occurrence and importance in the Atlantic Ocean.
Siderophores are chelates produced by bacteria as part of a highly specific iron uptake mechanism. They are thought to be important in the bacterial acquisition of iron in seawater and to influenceExpand
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Relative influence of nitrogen and phosphorous availability on phytoplankton physiology and productivity in the Oligotrophic Sub-Tropical North Atlantic Ocean
Nutrient addition bioassay experiments were performed in the low-nutrient, low-chlorophyll oligotrophic subtropical North Atlantic Ocean to investigate the influence of nitrogen (N), phosphorus (P),Expand
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Metal geochemistry in a mine-polluted estuarine system in Spain
The Rio Tinto and Rio Odiel drain the Iberian Pyrite Belt, an important metal-rich sulphide deposit. The rivers are highly acidic (pH 2.2-3.6) and have milli-molar SO4 and Fe concentrations andExpand
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Differential effects of ocean acidification on growth and photosynthesis among phylotypes of Symbiodinium (Dinophyceae)
We investigated the effect of elevated partial pressure of CO2 (pCO2) on the photosynthesis and growth of four phylotypes (ITS2 types A1, A13, A2, and B1) from the genus Symbiodinium, a diverseExpand
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Degree of oligotrophy controls the response of microbial plankton to Saharan dust
To determine the effects of Saharan dust on the abundance, biomass, community structure, and metabolic activity of oceanic microbial plankton, we conducted eight bioassay experiments between ca. 30uNExpand
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