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Video Plankton Recorder (VPR): Advanced Topics

Example of data
The figure shows the distributional patterns of the copepod Calanus (top panel) and hydroid polyps (bottom panel) on Georges Bank during late spring.

Note the high-resolution data reveals both the large scale trends in abundance as well as smaller scale patchiness.

The VPR is calibrated in the laboratory prior to the cruise in order to carefully map out the in-focus volume using a copepod tethered to a thin wire. At sea, number of organisms in a given taxon counted by the VPR is divided by the volume imaged to determine abundance.

Papers and other advanced materials
Davis, C. S., S. M. Gallager, and A. R. Solow. 1992. Microaggregations of oceanic plankton observed by towed video microscopy. Science, 257, 230-232.

Davis, C. S., S. M. Gallager, M. S. Berman, L. R. Haury, and J. R. Strickler. 1992. The Video Plankton Recorder (VPR): Design and initial results. Arch. Hydrobiol. Beih., 3
6, 67-81.

Davis, C. S., S. M. Gallager, M. Marra, and W. K. Stewart. 1996. Rapid visualization of plankton abundance and taxonomic composition using the Video Plankton Recorder. Deep Sea Res. II, 43, 1947-1970.

Tang, X., W. K. Stewart, L. Vincent, H. Huang, M. Marra, S. M. Gallager, and C. S. Davis, 1998. Automatic Plankton Image Recognition, Artificial Intelligence Review, 12, 177-199.

Gallager, S. M., H. Yamazaki, C. S. Davis. 2004. The contribution of fine scale vertical structure and swimming behavior to the formation of plankton layers on Georges Bank. Mar. Ecol. Prog. Ser. 267, 27–43.

Davis, C. S., S. M. Gallager, X. Tang, L. Vincent, and C. J. Ashjian, H. Qiao. 2004. Real-time visualization of taxa-specific plankton distributions. Mar. Ecol. Prog. Ser. (submitted)

Figure from Davis et al., 2004