Reduced oxygen concentrations in herring wintering areas

Reduced oxygen due to high-altitude exposure relates to atrophy in motor-function brain areas.

BACKGROUND AND PURPOSE At high altitudes barometric pressure is reduced and, thus, less oxygen is inhaled. Reduced oxygen concentration in brain tissue can lead to cerebral damage and neurological and cognitive deficits. The present study was designed to explore the effects of high-altitude exposure using a quantitative MRI technique, voxel-based morphometry. METHODS We studied nine world-cla...

Oxygen and Carbon Dioxide Concentrations in Oxygen Tents.

FLAMMABILITY OF HYDROGEN AT SUB-ATMOSPHERIC PRESSURES AND REDUCED OXYGEN CONCENTRATIONS By STEVEN REHN

............................................................................................................................. ii Acknowledgements .......................................................................................................... iii List of Tables .................................................................................................................... vi List ...

Effects of reduced dissolved oxygen concentrations on physiology and fluorescence of hermatypic corals and benthic algae

While shifts from coral to seaweed dominance have become increasingly common on coral reefs and factors triggering these shifts successively identified, the primary mechanisms involved in coral-algae interactions remain unclear. Amongst various potential mechanisms, algal exudates can mediate increases in microbial activity, leading to localized hypoxic conditions which may cause coral mortalit...

Dramatic intraspecific differences in migratory routes, stopover sites and wintering areas, revealed using light-level geolocators.

Migratory divides are contact zones between breeding populations that use divergent migratory routes and have been described in a variety of species. These divides are of major importance to evolution, ecology and conservation but have been identified using limited band recovery data and/or indirect methods. Data from band recoveries and mitochondrial haplotypes suggested that inland and coasta...