Journal of the korean society of oceanography

한국해양학회 (The Korean Society of Oceanography)
권호 표지

Effects of naval pulp wastes on the growth and feeding rates of a heterotrophic protist and copepods

  • Jeong, Hae-Jin (Department of Oceanography, College of Ocean Science and Technology, Kunsan National University)
  • 발행 : 2002.06.01
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초록

I investigated whether US naval pulp wastes (pulverized paper products), which is planned to be dumped into offshore waters, may affect the ecology of major components of marine zooplankton. The presence of slurry (0.6% concentration - wet weight ; wet weight) did not significantly affect the population growth rates of the heterotrophic dinoflagellate Polykrikos kofoidii fed on Lingulodinium polyedrum, but significantly reduced the ingestion rates of the calanoid copepods Acartia spp. on L. polyedrum and those of the copepod Calanus pacificus on Akashiwo sanguinea (previously Gymnodinium sanguineum). However, C. pacificus, originally exposed to 0.6% slurry for 24 hour, can recover its feeding rates when slurry disappears. Therefore, if slurry is diluted quickly due to trubulence after being dumped at 0.6% concentration, its presence may not affect Calanus. Chemicals leached from slurry did not affect the feeding rate of Calanus. Therefore, mechanical interference by slurry on the feeding and/or swimming of copepods may be mainly responsible for the reduction of the ingestion rates.

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