Iron stimulation of Antarctic bacteria
Article Abstract:
Low-concentrations of iron enrichment stimulate the growth of heterotrophic bacteria in Antarctic waters. Iron-amended samples show approximately twofold increase in bacterial cell densities and a fourfold increase in the specific growth rate at temperatures typically found in Antarctic waters. The response of heterotrophic bacteria may have implications for trophodynamics and nutrient cycling in marine ecosystems where iron availability may attenuate biological activity.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
A complex clathrate hydrate structure showing bimodal guest hydration
Article Abstract:
A new hydrate structure 1.67 choline hydroxide.tetra-n-propylammonium fluoride.30.33H(sub2)O, is reported. The choline guest shows both hydrophobic and hydrophilic modes of hydration. The structure comprises alternating stacks of structure H and II hydrates and could be found in seafloor deposits over natural-gas fields, where clathrate hydrates naturally form.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Complex gas hydrate from the Cascadia margin
Article Abstract:
The structure, gas content and composition and distribution of guest molecules were characterized in a complex natural hydrate sample recovered from Barkley canyon on the northern Cascadia margin. It is found that the stability field of the complex gas hydrate lies between those of structure II and structure H hydrates.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Microstimulation of inferotemporal cortex influences face categorization. A move to sort life from death
- Abstracts: Strange kinetics. Role of hydration and water structure in biological and colloidal interactions
- Abstracts: Regulation of the bacterial cell cycle by an integrated genetic circuit. Non-mitochondrial complex I proteins in a hydrogenosomal oxidoreductase complex
- Abstracts: Localization of the gravity field and the signature of glacial rebound. Three-dimensional deformation caused by the Bam, Iran, earthquake and the origin of shallow slip deficit
- Abstracts: Sciurid habitat relationships in forests managed under selection and shelterwood silviculture in Ontario. Evaluation of factors potentially influencing a desert Bighorn Sheep population