Stimulation of the potential heterotrophic activity in deep seawater by barotolerant bacteria colonizing faecal pellets produced by migrating zooplankton.
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 1999 |
| Auteurs (5) | : | BIANCHI A GARCIN J GORSKY Gabriel POULICEK M THOLOSAN O |
| Revue scientifique | : | Comptes Rendus de l'Académie des Sciences - Series III - Sciences de la Vie |
| Volume | : | 322 |
| Fascicule | : | 12 |
| Pages | : | 1113-1120 |
| DOI | : | 10.1016/S0764-4469(99)00111-0 |
| URL | : | - |
| Abstract | : | At a depth of 1 150 m in the northwest Mediterranean, amino acid uptake and bacterial biomass production rates increased, in a 12-day lime interval, 5- and 30-fold, respectively. Simultaneously, bacterial response to pressure changes evolved from barophilic to barotolerant. During the same period, scanning electron microscope observations and in situ observations using Underwater Video Profiler showed a 2-fold increase in particle concentrations, mainly due to faecal pellet production by zooplankton. This input, nutrient rich and largely colonized with bacteria unaffected by pressure variations since they originated from organisms that regularly migrate up and down through the water column, could produce such microbial activity peaking in the deep water masses. (C) 1999 Academie des sciences/Editions scientifiques et medicales Elsevier SAS. |
| Mots-clés | : | ATLANTIC-OCEAN; bacteria; barophile; deep-sea; DIEL MIGRATIONS; faecal pellets; GLUCOSE; hydrostatic pressure; Mediterranean; metabolic activity; MICRONEKTON; NORTHWESTERN MEDITERRANEAN-SEA; PARTICLE-BOUND BACTERIA; PRESSURE; SAMPLES; VERTICAL DISTRIBUTIONS; WATER |
| Commentaire | : | Times Cited in Web of Science Core Collection: 5 |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Bianchi A, Garcin J, Gorsky G, Poulicek M, Tholosan O (1999) Stimulation of the potential heterotrophic activity in deep seawater by barotolerant bacteria colonizing faecal pellets produced by migrating zooplankton. CR Acad Sci III-Vie 322: 1113-1120 | doi: 10.1016/S0764-4469(99)00111-0
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