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| Bakker, C.; Phaff, W.J.; van Ewijk-Rosier, M.; De Pauw, N.. |
| In the mesohaline zone of the Westerschelde estuary <i>Eurytemora affinis</i> is the dominant copepod, demonstrating large biomass values nearly throughout the year. In the meso-polyhaline Lake Veere <i>Acartia tonsa</i> is abundant, mainly during summer. In spring a small population of <i>Eurytemora americana</i> is found. The tidal estuary harboured far denser copepod populations throughout the year than the stagnant brackish lake water. The average yearly copepodid + adult biomass in the Westerschelde estuary was approx. 850 mg/m³ (wet weight), in Lake Veere approx. 130 mg/m³. Temporarily low oxygen values did not influence negatively the copepod populations in the Westerschelde estuary. The seasonal distribution of... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1977 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3560 |
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| Tackx, M.L.M.; Bakker, C.; Francke, J.W.; Vink, M.. |
| Grazing of adults of the copepods <i>Acartia</i> spp., <i>Temora longicornis, Centropages hamatus</i> and nauplii of <i>Balanus</i> spp. on natural particulate matter from the Oosterschelde was studied using a Coulter counter. Two types of particulate matter distributions were found to occur in the Oosterschelde: 1. distributions with distinct peaks in the >20 µm size range (A) and 2. more flattened distributions which were bell-shapened or contained multiple small peaks spread over the entire 4-100 µm size range (B). In A-type distributions, peak tracking was performed in all species studied, especially in <i>Acartia</i> spp. and <i>T. longicornis</i>. In B-type distributions, the animals... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zooplankton ANE; Netherlands; Oosterschelde. |
| Ano: 1989 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3190 |
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| Tackx, M.L.M.; Herman, P.M.J.; Van Rijswijk, P.; Vink, M.; Bakker, C.. |
| Phytoplankton and zooplankton biomass distributions were calculated on a carbon basis for the inland part of the Oosterschelde, in the period before (1983), during (1984, 1986) and after (1987, 1988) the construction of the storm-surge barrier. In all years studied, both phytoplankton and zooplankton distributions are very irregular, and little consistent patterns emerge. The data were used to test the model of Sheldon et al. (1977). The observed standing stock ratios of zooplankton to phytoplankton agree with the model predictions in 1983, and are slightly higher during the period 1984-1987. In 1988, the model predictions are very different from the observed values, because of important changes in the zooplankton species abundance occurring in this year. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Particles; Particles; Particles; Plankton; Size distribution; Spectra; Zooplankton; Netherlands. |
| Ano: 1994 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2675 |
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