DISTRIBUTION OF CARBON AMONG PHOTOSYNTHETIC END‐PRODUCTS IN PHYTOPLANKTON OF THE EASTERN CANADIAN ARCTIC 1
ABSTRACT The distribution of 14 C among photosynthetic end‐products was examined in eastern Canadian arctic phytoplankton, with particular emphasis on the synthesis of lipids. The pattern of 14 C distribution for phytoplankton at each of three depths was generally similar among populations from 12 s...
| Published in: | Journal of Phycology |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1982
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1529-8817.1982.tb03211.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.1982.tb03211.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.1982.tb03211.x |
| Summary: | ABSTRACT The distribution of 14 C among photosynthetic end‐products was examined in eastern Canadian arctic phytoplankton, with particular emphasis on the synthesis of lipids. The pattern of 14 C distribution for phytoplankton at each of three depths was generally similar among populations from 12 stations. About 18% of the total 14 C fixed was incorporated into lipids. At one station, phytoplankton were experimentally subjected to temperature and light conditions different from those in situ: lipid‐ 14 C did not exceed 30% of total 14 C fixed within the temperature range ‐1.0 to 6.0° C and irradiance range 1 to 700 W · m −2 . It is suggested that low temperatures and low light intensities, even when, maintained for prolonged periods, are not fully sufficient conditions for eliciting high relative rates of 14 C incorporation into lipids. It is possible that differences in species composition may be a factor accounting for different patterns of 14 C distribution between north and south polar phytoplankton under apparently similar environmental conditions. |
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