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- Tiselius, Peter,1958Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Department of Marine Ecology (author)
An in situ video camera for plankton studies: design and preliminary observations
- Article/chapterEnglish1998
Publisher, publication year, extent ...
- 1998
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- LIBRIS-ID:oai:gup.ub.gu.se/82877
- https://gup.ub.gu.se/publication/82877URI
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- Language:English
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- A design for an in situ video camera for plankton observations is presented. A light weight aluminium rig supports a video camera with an opposing stroboscope which produces dark field images of plankton >0.3 mm. In the present configuration the camera can be used down to 100 m and provides video images of 10 to 40x magnification when viewed on a 14 " (ca 35 cm) monitor. Video recordings from the field show moderate aggregations of small copepods to the subsurface fluorescence maximum and at times indications of horizontal patchiness. The large copepod Calanus finmarchicus was found to aggregate 5 m below the fluorescence maximum at night. In comparisons with a traditional WP-2 plankton net, the video camera provided similar length frequency distributions while abundance estimates from video recordings were 10 to 20% higher than net estimates. II is concluded that the presented video camera offers excellent observations of the pelagic environment at an affordable cost.
Subject headings and genre
- NATURVETENSKAP Biologi Ekologi hsv//swe
- NATURAL SCIENCES Biological Sciences Ecology hsv//eng
- NATURVETENSKAP Biologi hsv//swe
- NATURAL SCIENCES Biological Sciences hsv//eng
- fine-scale distribution
- copepods
- gelatinous plankton
- marine snow
- acartia-tonsa
- behavior
- environments
- aggregation
- zooplankton
- growth
- bloom
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- Göteborgs universitetInstitutionen för marin ekologi (creator_code:org_t)
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- In:Marine Ecology-Progress Series164, s. 293-2990171-8630
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