Appearance of Chelophyes appendiculata and Abylopsis tetragona (Cnidaria, Siphonophora) in the Bay of Villefranche, northwestern Mediterranean
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 1999 |
| Auteurs (1) | : | BUECHER Emmanuelle |
| Revue scientifique | : | Journal of Sea Research |
| Volume | : | 41 |
| Fascicule | : | 4 |
| Pages | : | 295-307 |
| DOI | : | 10.1016/S1385-1101(99)00005-2 |
| URL | : | - |
| Abstract | : | The vertical and temporal distribution of two calycophoran siphonophores, Chelophyes appendiculata (Eschscholtz, 1829) and Abylopsis tetragona (Otto, 1823) in the Bay of Villefranche (northwestern Mediterranean) was investigated by an analysis of three different planktonic time series. A daily series (1993-1995) showed seasonal peaks of the nectophores of C. appendiculata during spring and particularly in late summer, while the abundance of A. tetragona remained similar throughout the year. A weekly series (1994-1995) showed that C. appendiculata (nectophores and eudoxids) became concentrated above the thermal discontinuity, in the most stratified and warm waters, whereas A. tetragona was collected in large numbers below this discontinuity. A 27-year survey (1966-1993) showed long-term fluctuations of these siphonophore populations, which became abundant in the Bay starting from 1980 and especially after 1984, when the water column grew warm and hypersaline, corresponding to a less rainy period. Temporal (seasonal and long-term) and bathymetric (between 10 and 60 m depth) successions of these two siphonophores were noted in this shallow coastal bay. (C) 1999 Elsevier Science B.V. All rights reserved. |
| Mots-clés | : | ABUNDANCE; Abylopsis tetragona; Chelophyes appendiculata; DIEL MIGRATIONS; EPIPELAGIC SIPHONOPHORES; FISH; long-term fluctuations; LONG-TERM FLUCTUATIONS; MACROPLANKTON; MICRONEKTON; SEA; seasonality; SMALL-SCALE DISTRIBUTION; vertical distribution; VERTICAL DISTRIBUTIONS |
| Commentaire | : | Times Cited in Web of Science Core Collection: 25 |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Buecher E (1999) Appearance of Chelophyes appendiculata and Abylopsis tetragona (Cnidaria, Siphonophora) in the Bay of Villefranche, northwestern Mediterranean. J Sea Res 41: 295-307 | doi: 10.1016/S1385-1101(99)00005-2
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