December 28, 2010
Under the ice
The water had frozen, melted, and refrozen several times, and the edges were a mass of chunks and shards of opaque ice held fast in a transparent and treacherous lacquer.
Cold water holds more oxygen than warm, and fish require less of it than in warm weather. They were probably at the bottom, far under the ice, in a slow, deep torpor. As long as light can penetrate the ice the pond aquatic plants can continue to respire; a blanket of darkening snow over the ice is worse than a freeze. Amphibians like frogs and news will usually leave water if it is going to freeze, and burrow down into mud or hide in nearby vegetation.