搜索结果: 1-15 共查到“海洋地球物理学 iron”相关记录15条 . 查询时间(0.093 秒)
Dust in the wind:North Pacific Ocean fertilized by iron in Asian dust（图）
Dust wind North Pacific Ocean fertilized iron Asian dust
2019/10/28
Vast subtropical gyres -- large systems of rotating currents in the middle of the oceans -- cover 40% of the Earth. The gyres have long been considered biological deserts, with waters that contain ver...
Measuring the Form of Iron in Hydrothermal Plume Particles
Iron Hydrothermal Plume Particles
2015/7/14
The global mid-ocean ridge (MOR) system is a 60,000 km submarine volcanic mountain range that crosses all of the major ocean basins on Earth. Along the MOR, subseafloor seawater circulation exchanges ...
An evaluation of iron bioavailability and speciation in western Lake Superior with the use of combined physical, chemical, and biological assessment
iron bioavailability western Lake Superior
2014/4/18
An iron-dependent cyanobacterial bioreporter (Synechococcus strain KAS101) was used in unison with sizefractionated iron content (.0.45, ,0.45, ,0.02 mm), and chemical characterization of iron complex...
Enhanced viral production and infection of bacterioplankton during an iron-induced phytoplankton bloom in the Southern Ocean
Enhanced viral production iron-induced phytoplankton
2014/4/18
We followed the viral response to Fe-enrichment over 3 weeks during the second iron-enrichment experiment
(EisenEx) in the Southern Ocean. Although viral abundance increased in a rather constant way ...
The interaction between inorganic iron and cadmium uptake in the marine diatom Thalassiosira oceanica
inorganic iron cadmium uptake
2014/4/21
We examined substrate-saturated Fe(II) vs. Fe(III) uptake rates of Thalassiosira oceanica preconditioned to
varying degrees of Fe limitation. Inorganic Fe(III) uptake rates by Fe-sufficient T. oceani...
Molecular assessment of phosphorus and iron physiology in Trichodesmium populations from the western Central and western South Atlantic
Molecular assessment phosphorus iron physiology
2014/4/22
Trichodesmium is capable of responding to low phosphorus (P) and low iron (Fe) concentrations through the
induction of alkaline phosphatase (AP) activity (an enzyme that hydrolyzes inorganic phosphat...
The physicochemical speciation of dissolved iron in the Bering Sea, Alaska
physicochemical speciation dissolved iron
2014/4/22
The physicochemical speciation of dissolved iron (Fe) across natural dissolved Fe gradients in the oceanic
and shelf domains of the southeastern Bering Sea was examined in surface and subsurface samp...
The evolution and termination of an iron-induced mesoscale bloom in the northeast subarctic Pacific
The evolution iron-induced mesoscale bloom
2014/5/13
We initiated and mapped a diatom bloom in the northeast subarctic Pacific by concurrently adding dissolved iron
and the tracer sulfur hexafluoride to a mesoscale patch of high-nitrate, lo...
Influence of iron on algal community composition and physiological status in the Peru upwelling system
algal community composition physiological status
2014/5/13
Phytoplankton community structure in the eastern Equatorial Pacific (EEP) and the Peru upwelling system was
determined using ChemTax analysis of pigment data. Photosynthetic efficiencies ...
Domoic acid: The synergy of iron, copper, and the toxicity of diatoms
The synergy of iron copper
2014/5/13
Diatom blooms generated by the alleviation of iron limitation in high nitrate–low chlorophyll (HNLC) regions
of the oceans often are composed of pennate diatoms of the genus Pseudo-nitzschia, many of...
Relationships among photoperiod, carbon fixation, growth, chlorophyll a, and cellular iron and zinc in a coastal diatom
Relationships photoperiod carbon fi xation growth
2014/5/19
We conducted culture experiments with the diatom Thalassiosira pseudonana to determine the interactive effects
of day length and biologically available concentrations of iron and zinc on cellular iro...
The biological availability of Fe has been demonstrated to strongly influence both primary and secondary production in pelagic as well as coastal upwelling high-nutrient low-chlorophyll (HNLC) r...
Influence of zinc and iron enrichments on phytoplankton growth in the northeastern subarctic Pacific
zinc ron enrichments northeastern subarctic Pacifi c
2014/5/21
Near-surface seawater from the northeastern subarctic Pacific was incubated on deck for 8 d, supplemented with
(1) control, no additions (2) 1Zn (3) 1Fe (4) 1Zn1Fe. Concentrations of total Zn a...
Bioavailability of natural colloid-bound iron to marine plankton: Influences of colloidal size and aging
natural colloid-bound iron marine plankton
2014/5/30
Iron (Fe) is mostly complexed with the organic ligands or colloids that are very abundant in natural seawater. In
this study, natural colloids were isolated by ultrafiltration and radiolabeled ...
Growth rates of large and small Southern Ocean diatoms in relation to availability of iron in natural seawater
Growth rates of large small Southern Ocean
2014/5/30
Blooms of large diatoms dominate the CO2
drawdown and silicon cycle of the Southern Ocean in both the past
and present. The growth of these Antarctic diatoms is limited by availability of iron (and ...