Autre(s) titre(s) |
Data about freshwater Gastropoda from the west of France: Partition in 5 groups of species |
Type |
Communication avec actes |
Date |
1991-11 |
Langue(s) |
Français |
Auteur(s) |
Costil F |
Conférence |
(8. Natl. Congr. of the French Malacological Society): Aspects Recents de la Biologie des Mollusques, Brest (France), 7-8 Nov 1990 |
Source |
Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991 |
Keyword(s) |
Gastropoda, Frequency analysis, Freshwater molluscs, Fresh water, Check lists, Inventories, Mathematical models, Ponds, Abundance |
Résumé en anglais |
24 Species of Gastropoda, representing 3357 specimens, have been sampled in 57 varied ponds of Brittany (France). The most frequent species (at least in 10% of the samples) are considered according to their average abundance and dominance. The average specific richness of the ponds where the species have been collected is studied. In a second stage, the Gastropoda are analysed by means of a principal component analysis. The 1-2 plane correspond to 87% of the whole variance. This analysis associated with a cluster analysis led to the partition of 5 groups of species. |
Texte intégral |
Fichier |
Pages |
Taille |
Accès |
acte-1713.pdf |
9 |
1 MB |
Libre accès |
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