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
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Format: | Text |
Language: | English |
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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 |
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