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Calcium carbonate precipitation induced by the growth of the marine cyanobacterium Trichodesmium
Calcium carbonate precipitation marine cyanobacterium Trichodesmium
2014/4/17
In this laboratory study, we monitored the buildup of biomass and concomitant shift in seawater carbonate
chemistry over the course of a Trichodesmium bloom under different phosphorus (P) availabilit...
Interspecies differences in calcium content and requirement in four freshwater cladocerans explained by biokinetic parameters
Interspecies differences in calcium content in four freshwater cladocerans explained biokinetic parameters
2014/4/17
We tested the hypothesis that cladocerans with higher calcium (Ca) content are more susceptible to Ca limitation by conducting life table experiments using four cladoceran species with contrasting Ca ...
Statistical measures of distribution patterns of silicon and calcium in marine sedimentary layers
Statistical measures distribution patterns silicon calcium marine sedimentary layers
2009/11/3
We analyze electron microscope X-ray spectroscopy data of recent supratidal marine sediments. Statistical measures are used to characterize the distribution of silicon and calcium in different layers ...
The regulation of calcium in Daphnia magna reared in different calcium environments
Daphnia magna calcium environments
2014/4/18
The specific content, dissolved uptake rate, dietary assimilation efficiency (AE), and efflux rate constant (ke
) of
calcium (Ca) were quantified in juvenile (4-d) and adult (10-d) Daphnia magna cul...
The interactive effects of calcium concentration and temperature on the survival and reproduction ofDaphnia pulexat high and low food concentrations
calcium concentration temperature on the survival Daphnia pul exat high low food concentrations
2014/4/21
We rearedDaphnia pulexin a fully defined medium at seven calcium (Ca) concentrations (0.1, 0.5, 1, 1.5, 2, 5, and 10 mg Ca L21), two mixed algal densities (high food: 30mg chlorophyllaL21 and low food...
Effect of varying calcium concentrations and light intensities on calcification and photosynthesis in Emiliania huxleyi
varying calcium concentrations light intensities
2014/4/22
Various protective and metabolic functions for coccolithophore calcification have been proposed such as
providing a means to supply CO2
for photosynthesis. It has also been speculated that calcifica...
Coccolith strontium to calcium ratios in Emiliania huxleyi: The dependence on seawater strontium and calcium concentrations
Coccolith strontium Emiliania huxleyi seawater strontium
2014/4/23
In recent studies the Sr/Ca ratio of coccolithophore calcite was used as a proxy for past coccolithophore growth
and calcification rates. Since Sr and Ca concentrations in seawater have not rem...