Picoplankton dynamics in Davies Reef lagoon, the Great Barrier Reef, Australia
The diel variations in abundance and frequency of dividing cells (FDC) of coccoid cyanobacteria in a coral reef lagoon were investigated in June, September and December 1989, and April 1990. Cyanobacteria and picoplanktonic eukaryotes (
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| Veröffentlicht in: | Journal of plankton research 1992-01, Vol.14 (11), p.1593-1606 |
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| container_title | Journal of plankton research |
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| creator | AYUKAI, T |
| description | The diel variations in abundance and frequency of dividing cells (FDC) of coccoid cyanobacteria in a coral reef lagoon were investigated in June, September and December 1989, and April 1990. Cyanobacteria and picoplanktonic eukaryotes ( |
| doi_str_mv | 10.1093/plankt/14.11.1593 |
| format | Article |
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Cyanobacteria and picoplanktonic eukaryotes (<3 μm) were sampled monthly from January to December 1990. The average abundances of cyanobacteria and eukaryotes ranged between 1.17–10.06×104 cells ml−1 and 0.16–2.41×104 cells ml−1, respectively, with abundances of both being higher in summer (November-April) than in winter (May-October). The ratio of cyanobacteria to eukaryotes fluctuated from 1.93 to 8.67, independent of the seasonal variation in their abundances. The instantaneous growth rate of cyanobacteria, which was estimated from the daytime abundance increment, ranged between 0.430 and 3.144 day−1 The estimated daily specific growth rate of cyanobacteria by the FDC method ranged between 0.231 and 0.966 day−1. In April, despite the high specific growth rate and low flushing conditions. cyanobacterial abundance showed a cyclic diel pattern, suggesting a strong grazing impact on their population.</description><identifier>ISSN: 0142-7873</identifier><identifier>EISSN: 1464-3774</identifier><identifier>DOI: 10.1093/plankt/14.11.1593</identifier><identifier>CODEN: JPLRD9</identifier><language>eng</language><publisher>Oxford: Oxford University Press</publisher><subject>Animal, plant and microbial ecology ; Biological and medical sciences ; Cyanophyta ; Fundamental and applied biological sciences. 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Cyanobacteria and picoplanktonic eukaryotes (<3 μm) were sampled monthly from January to December 1990. The average abundances of cyanobacteria and eukaryotes ranged between 1.17–10.06×104 cells ml−1 and 0.16–2.41×104 cells ml−1, respectively, with abundances of both being higher in summer (November-April) than in winter (May-October). The ratio of cyanobacteria to eukaryotes fluctuated from 1.93 to 8.67, independent of the seasonal variation in their abundances. The instantaneous growth rate of cyanobacteria, which was estimated from the daytime abundance increment, ranged between 0.430 and 3.144 day−1 The estimated daily specific growth rate of cyanobacteria by the FDC method ranged between 0.231 and 0.966 day−1. In April, despite the high specific growth rate and low flushing conditions. cyanobacterial abundance showed a cyclic diel pattern, suggesting a strong grazing impact on their population.</description><subject>Animal, plant and microbial ecology</subject><subject>Biological and medical sciences</subject><subject>Cyanophyta</subject><subject>Fundamental and applied biological sciences. 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Cyanobacteria and picoplanktonic eukaryotes (<3 μm) were sampled monthly from January to December 1990. The average abundances of cyanobacteria and eukaryotes ranged between 1.17–10.06×104 cells ml−1 and 0.16–2.41×104 cells ml−1, respectively, with abundances of both being higher in summer (November-April) than in winter (May-October). The ratio of cyanobacteria to eukaryotes fluctuated from 1.93 to 8.67, independent of the seasonal variation in their abundances. The instantaneous growth rate of cyanobacteria, which was estimated from the daytime abundance increment, ranged between 0.430 and 3.144 day−1 The estimated daily specific growth rate of cyanobacteria by the FDC method ranged between 0.231 and 0.966 day−1. 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| source | Oxford University Press Journals Digital Archive Legacy |
| subjects | Animal, plant and microbial ecology Biological and medical sciences Cyanophyta Fundamental and applied biological sciences. Psychology Marine Microbial ecology Various environments (extraatmospheric space, air, water) |
| title | Picoplankton dynamics in Davies Reef lagoon, the Great Barrier Reef, Australia |
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