In the 1950s, or even in the 1940s, a decline in sightings of the harbour porpoise (Phocoena phocoena) in Dutch coastal waters occurred. The first reports indicating fewer sightings date back
| Other Authors: | |
|---|---|
| Format: | Text |
| Language: | English |
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.631.386 http://home.planet.nl/~camphuys/0239.pdf |
| Summary: | In the 1950s, or even in the 1940s, a decline in sightings of the harbour porpoise (Phocoena phocoena) in Dutch coastal waters occurred. The first reports indicating fewer sightings date back |
|---|