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| Sauriau, P; Baud, Jean-pierre. |
| Based on Coulter Counter data, a new method is proposed to study the influence of the polymorphous variability in size as well as in shape of the diatom species Skeletonema costatum on the physiological performances of the Manila clam Ruditapes philippinarum . Three conditions are required in order to convert volumetric data determined with the Coulter Counter into metric data, i.e. (1) stability of the pervalvar diameter of the diatom chains, (2) statistical independence between length and pervalvar diameter of the diatom chains, and (3) negligible level of coincident passages through the aperture orifice. Under these three conditions, the mean length (l) of a S. costatum chain can be related to the mean pervalvar diameter (d) of diatom chains and to the... |
| Tipo: Text |
Palavras-chave: Bivalvia; Skeletonema costatum; Bacillariophyceae; Algae; Physiology; Biopolymorphism; Counters; Size; Size distribution; Feeding; Nutrition. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/acte-1670.pdf |
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| Gruet, Y; Sauriau, P. |
| Four cores have been sampled in the "Marais Poitevin": one of them in the east of Charron, another one near Pied-Lizet and the others near Maillezais. Pieces of shells of different species have been numbered and weighed. Ranks frequencies diagrams show the malacological associations homogeneity and diversity. The factorial analysis on the absences-presences makes clear an ecological gradient from the most marine associations to the most superficial and finally land associations. |
| Tipo: Text |
Palavras-chave: Fossils; Marshes; Malacology. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/acte-1760.pdf |
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