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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hermand, J.-P. Guo, L. Randall, J. Brehmer, P. |
| Copyright Year | 2014 |
| Description | Author affiliation: UMR Lemar, IRD Co. ISRA/CRODT, Dakar, Senegal (Brehmer, P.) || Labs. of Image, Signal Process. & Acoust., Univ. libre de Bruxelles (U.L.B.), Brussels, Belgium (Hermand, J.-P.; Guo, L.; Randall, J.) |
| Abstract | A submersible digital holographic microscope (DHM) Holoflow@Sea was deployed during AWA fisheries surveys conducted in March 2013 and 2014 in the large upwelling ecosystem of the Canaries Current. The microscope collected about half a million of holograms of microorganisms and other particles suspended in the water column. Selected new results of reconstruction of phyto- and zooplankton species using improved algorithms with respect to previously published results are presented. Amplitude images are more detailed and, for some species, phase images provide useful additional information about morphology and composition. Extensive analysis confirms that the submersible DHM is suitable for in-situ imaging of organisms in the size range 2 μm-200 μm and species identification. When compared to standard procedures the microscope allows to rapidly monitor planktonic communities over a wide area. It contributes to a better understanding of the organization and functioning of the ecosystem and in particular the link between biogeochemistry cycles and small pelagic fish stock dynamics. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 1034769 |
| Page Count | 4 |
| File Format | |
| e-ISBN | 9781479936465 |
| DOI | 10.1109/OCEANS-TAIPEI.2014.6964569 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-04-07 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Image reconstruction Microscopy Microorganisms Optical microscopy Holography Underwater vehicles Aquaculture species identification Holoflow@Sea digital holographic microscopy phase image dinoflagellate diatom chain marine aggregate phytoplankton upwelling region zooplankton small pelagics fisheries management ecosystemic approach behaviour dynamics |
| Content Type | Text |
| Resource Type | Article |
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