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| Beukema, J J; Cadee, G C; Hummel, H. |
| Evidence from a tidal flat ecosystem in the Dutch Wadden Sea is presented, substantiating a hypothesis formulated by Levinton (1972) and stating that both the food supply and the numbers of suspension feeding marine zoobenthic species fluctuate more heavily, spatially as well as temporally, than those of deposit feeders. During the year and also from day-to-day, concentrations of chlorophyll-a and particulate organic matter fluctuated more heavily in the water above tidal flats than in the top layer of the bottom. From year to year, the numbers of suspension feeding species (as the bivavles Mytilus edulis, Mya arenaria and Cerastoderma edule ) fluctuated more heavily than those of deposit feeding species (as Arenicola marina, Heteromastus filiformis,... |
| Tipo: Text |
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| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/00247/35795/34308.pdf |
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| Sokolowski, A; Wolowicz, M; Hummel, H; Bogaards, R. |
| Physiological and behavioral responses to Cu exposure were measured in the Baltic clam Macoma balthica from the Gulf of Gdansk, southern Baltic Sea. The burrowing activity, mortality rate, glycogen content, condition index and free amino acid (FAA) composition were analysed as indicators of stress in a series of field and laboratory studies. M. balthica exposed to Cu showed clear Cu-concentration related differences in burrowing activity and mortality rate, but no consistent differences in the condition index, glycogen content, and free amino acids. The clams from a less polluted area reacted more strongly and were more sensitive to additional stress as compared to organisms from a more polluted region. The effect of Cu on the ecophysiology of Baltic clams... |
| Tipo: Text |
Palavras-chave: Stress; Cuivre; Écophysiologie; Macoma balthica; Mer Baltique; Stress; Copper; Ecophysiology; Macoma balthica; Baltic Sea. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43606/43925.pdf |
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