Video Plankton Recorder estimates of copepod, pteropod and larvacean distributions from a stratified region of Georges Bank with comparative measurements from a MOCNESS sampler

A two-vessel exercise was conducted over the southern flank of Georges Bank during the onset of vernal stratification in May 1992. The Video Plankton Recorder (VPR), a towed video system, was used to map out the fine-scale distributions of zooplankton to a depth of 70 m along a trackline which descr...

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Bibliographic Details
Published in:Deep-sea research. Part II, Topical studies in oceanography Topical studies in oceanography, 1996, Vol.43 (7-8), p.1925-1945
Main Authors: Benfield, Mark C., Davis, Cabell S., Wiebe, Peter H., Gallager, Scott M., Gregory Lough, R., Copley, Nancy J.
Format: Article
Language:English
Subjects:
Copepoda
Larvacea
Marine
Pteropoda
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Summary:A two-vessel exercise was conducted over the southern flank of Georges Bank during the onset of vernal stratification in May 1992. The Video Plankton Recorder (VPR), a towed video system, was used to map out the fine-scale distributions of zooplankton to a depth of 70 m along a trackline which described a regular grid (3.5 × 4.5 km) in Lagrangian space. A second vessel following a parallel course conducted Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) sampling during the last section of the grid, which provided an opportunity to compare data from the two systems. Both the VPR and the MOCNESS provided similar data on the taxonomic composition of the plankton which was numerically dominated by copepods (Calanus, Pseudocalanus, Oithona), pteropods (Limacina) and larvaceans (Oikopleura). The absence of rare (
ISSN:0967-0645
1879-0100
DOI:10.1016/S0967-0645(96)00044-6