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- Title
Microscale patchiness of plankton within a sharp pycnocline.
- Authors
Tiselius, Peter; Nielsen, Gitte; Nielsen, Torkel Gissel
- Abstract
Microscale distributions of plankton around the pycnocline were studied over a 24 h period in the southern Kattegat, using a gradient sampler which collects 20 samples over a 3 m depth interval. Moderately elevated concentrations of phyto- and zooplankton were observed at the pycnocline. Microscale variance was highest for adult copepods. Nauplii and copepodites were equally well represented by sampling with ordinary vertical 5 1 water bottles as with the horizontal 1.5 1 bottles of the gradient sampler. Adult copepods were underestimated by the vertical bottles. No vertical migration of dinoflagellates was observed over the 3 m interval covered by the gradient sampler. Microscale correlations between copepods and phytoplankton within the gradient sampler were weak. Copepodites (mainly sp.) and the dinoflagellate showed the best correlation.
- Publication
Journal of Plankton Research, 1994, Vol 16, Issue 5, p543
- ISSN
0142-7873
- Publication type
Article