Distribution of macrozooplankton at time series station MIGZOO-4

DOI

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.

Supplement to: Andersen, Valérie; Sardou, Jacques (1994): Pyrosoma atlanticum (Tunicata, Thaliacea): diel migration and vertical distribution as a function of colony size. Journal of Plankton Research, 16(4), 337-349

Identifier
DOI https://doi.org/10.1594/PANGAEA.758055
Related Identifier https://doi.org/10.1093/plankt/16.4.337
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.758055
Provenance
Creator Andersen, Valérie; Sardou, Jacques
Publisher PANGAEA
Publication Year 1994
Funding Reference Sixth Framework Programme https://doi.org/10.13039/100011103 Crossref Funder ID 36949 https://cordis.europa.eu/project/id/36949 Southern European Seas: Assessing and Modelling Ecosystem Changes
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (7.867 LON, 43.400 LAT)
Temporal Coverage Begin 1992-09-17T00:00:00Z
Temporal Coverage End 1992-09-25T23:59:00Z