Dimethyl sulphide as a foraging cue for Antarctic Procellariiform seabirds

Article Abstract:

Dimethyl sulphide, a naturally occurring scented compound, may act as a foraging cue for Antarctic Procellariiform seabirds. The compound is used by these seabirds as an orientation cue. Results of controlled experiments show that many of the species can detect dimethyl sulphide, and some are very attracted towards it. The seabirds apparently fly towards dimethyl sulphide because they eat zooplankton, and the compound is released by phytoplankton when eaten by zooplankton.

Behavior, Environmental aspects, Sea birds, Dimethyl sulfide, Seabirds

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Evolution of an active sea-floor massive sulphide deposit

Article Abstract:

Hydrothermal deposits research shows that the active Transatlantic Geotraverse (TAG) sulphide mound on the Mid-Atlantic Ridge contains anhydrite and sulphide precipitates originally found in sea water up to 37,000 years ago. The evolution of the TAG hydrothermal mound occurred in five stages. These are illustrated. Age distribution isotope measurements are given.

Research, Hydrothermal deposits

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Filamentous microfossils in a 3,235-million-year-old volcangenic massive sulphide deposit

Article Abstract:

The discovery of pyritic filaments, the likely fossil remains of thread-like microorganisms, in a 3,235-million-year-old deep-sea volcanogenic massive sulphide deposit from the Pilbara Craton of Australia is discussed.

Geology, Stratigraphic, Stratigraphy, Marine sediments, Archean Eon, Bacteriology

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