1. The calculation of particulate primary production in a stratified body
of water using a modification of the Vollenweider formula by J. P. Mommaerts 1
2. Lower marine fungi from the Northwest African upwelling areas and from the
Atlantic off Portugal by A. Gaertner 9
3. Distribution of Halobates micans (Heteroptera, Gerridae) in the Northern
Atlantic during spring, with comments on its catchability in neuston nets by
H.-Ch. John 31