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Andersen, Valérie; Sardou, Jacques (1994): Distribution of macrozooplankton at time series station MIGZOO-4 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.758055, Supplement to: Andersen, V; Sardou, J (1994): Pyrosoma atlanticum (Tunicata, Thaliacea): diel migration and vertical distribution as a function of colony size. Journal of Plankton Research, 16(4), 337-349, https://doi.org/10.1093/plankt/16.4.337

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Abstract:
A large population of the colonial pelagic tunicate Pyrosoma atlanticum occurred in April 1991 in offshore waters of the Ligurian Sea (Northwestern Mediterranean). The high numbers of colonies caught allowed their vertical distribution and diel migration in the 0-965 m water column to be described as a function of their size. Daytime depths and amplitudes of the migration were correlated with colony size. The amplitude of the migration ranged from 90 m for 3-mm-length colonies to 760 m for 51-mm-length colonies, with a mean amplitude of 410 m for the whole population, all sizes pooled. The results of horizontal hauls at a given depth around sunrise and sunset showed a marked diurnal symmetry of the migratory cycle relative to noon, and that migration of the population was not cohesive. For example, the larger the colonies, the later after sunset they reached the upper layers during their upward migration.
Project(s):
Biogeochemical Processes in the Oceans and Fluxes (PROOF)
Joint Global Ocean Flux Study (JGOFS)
Southern European Seas: Assessing and Modelling Ecosystem Changes (SESAME)
Funding:
Sixth Framework Programme (FP6), grant/award no. 36949: Southern European Seas: Assessing and Modelling Ecosystem Changes
Coverage:
Latitude: 43.400000 * Longitude: 7.866667
Date/Time Start: 1992-09-17T00:00:00 * Date/Time End: 1992-09-25T23:59:00
Event(s):
MIGZOO-4 * Latitude: 43.400000 * Longitude: 7.866667 * Date/Time Start: 1992-09-17T00:00:00 * Date/Time End: 1992-09-25T23:59:00 * Campaign: MIGZOO-4 * Basis: Georges Petit * Method/Device: Net (NET)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Andersen, V; Sardou, J (1994): Vertical distribution of macrozooplankton at time series station MIGZOO-4 around midday. https://doi.org/10.1594/PANGAEA.191138
  2. Andersen, V; Sardou, J (1994): Vertical distribution of macrozooplankton at time series station MIGZOO-4 around midnight. https://doi.org/10.1594/PANGAEA.191139
  3. Andersen, V; Sardou, J (1994): Distribution of macrozooplankton in horizontal tows at time series station MIGZOO-4 around sunrise. https://doi.org/10.1594/PANGAEA.191140
  4. Andersen, V; Sardou, J (1994): Distribution of macrozooplankton in horizontal tows at time series station MIGZOO-4 around sunset. https://doi.org/10.1594/PANGAEA.191141