The change in metabolism, and chemical and physical dynamics, after a transition from light to dark conditions, of melt water ponds on the McMurdo Ice Shelf

The pond chosen had considerable background knowledge on its general chemistry and biology, and because of its relatively small width, it was suitable for pond darkening experiments. Water samples were collected at different depths over a 24 hours period while the pond was covered and when it was uncovered.

Samples were analysed for the effects on water chemistry including variables such as dissolved oxygen, conductivity, pH, major ions and nutrients and salinity to measure changes in water chemistry after a transition from light to dark conditions.