An overview of all plankton species and corresponding environmental parameters measured in the harbour of Ostend in 1965. The data were digitized by VLIZ from the original report: De Pauw, C. (1966). Oekologische studie van het plankton in de haven van Oostende gedurende 1965. MSc Thesis. Universiteit Gent. Faculteit Wetenschappen: Gent. 147, bijlage 54 pp.