Sentences with phrase «ocean oxygenation»

Documented chemical behavior of these metals, which correlates with previously observed disturbances in oceanic carbon, oxygen and sulphur signatures, strongly suggests that these metal increases resulted from reductions of ocean oxygenation.

This means that (1) animals are directly involved in an oxygen - regulating cycle or feedback loop that has previously been overlooked, and (2) we can directly test the idea (despite the uncertainties associated with looking so far back in time) by looking for a decrease in ocean oxygenation in conjunction with the spread of bioturbation.

Not exact matches

Bathyal seafloor habitats in the North Pacific, North Atlantic, Arctic and Southern Oceans could experience a reduction in bottom - water oxygenation by 0.03 — 0.05 mL L — 1 by the year 2100 (Table 2; Figure 2), which represents a reduction in water column O2 levels by 0.7 % — 3.7 % (Table 3; Figure 3).

Abstract Geochemical evidence invokes anoxic deep oceans until the terminal Neoproterozoic ~ 0.55 Ma, despite oxygenation of Earth's atmosphere nearly 2 Gyr earlier.