The airing of burrows of the mole, Talpa europaea Linnaeus, 175

Abstract

The ventilation of burrows and nests of the mole, T. europaea was examined using the electric anemometer. The air flow in burrows is dependent mainly on the speed of wind over the ground. It was ascertained that air penetrates through fresh molehills into the tunnels. The intensity of air currents in burrows is rather much differentiated and depends on the configuration of tunnels, on their position in relation to the ground surface, and on the presence of mounds and openings. In all the nests examined air currents were recordable in the circular tunnels, whereas the chambers were quiet.