Show simple item record

dc.contributor.authorAnjusha, A.
dc.contributor.authorJyothibabu, R.
dc.contributor.authorJagadeesan, L.
dc.contributor.authorSavitha, K.M.M.
dc.contributor.authorAlbin, K.J.
dc.date.accessioned2019/03/31
dc.date.accessioned2019-04-30T12:44:14Z
dc.date.available2018/12/01
dc.date.available2019-04-30T12:44:14Z
dc.date.issued2018
dc.identifier.citationContinental Shelf Research, vol.171; 2018; 12-20
dc.identifier.issn0278-4343
dc.identifier.urihttps://doi.org/10.1016/J.CSR.2018.10.009
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/7961
dc.description.abstractPhytoplankton growth and microzooplankton grazing in the coastal waters off Kochi, Southwest coast of India, were assessed during three seasons (Pre-Monsoon; Southwest Monsoon and Northeast Monsoon) using the dilution technique. Nutrients concentration in the study area was low during the Pre-Monsoon (PRM) compared to the Southwest Monsoon (SWM) and Northeast Monsoon (NEM) periods. Phytoplankton biomass (Chl. a) and growth rate were the highest during the SWM followed by the NEM. They were influenced mainly by the coastal upwelling and estuarine influx. Microzooplankton grazing rate varied from 0.11-0.27-day-1 and their grazing pressure on phytoplankton production varied from 26-80% day-1. The highest grazing pressure of microzooplankton on phytoplankton was found during the PRM, when nutrient concentration was low. It was found that ~80% of the daily phytoplankton production and 31% of their biomass were grazed by microzooplankton during the PRM. On the other hand, microzooplankton grazing on phytoplankton biomass and production were low (11% and 26%, respectively) during the nutrient-repleted SWM. Grazing experiments using size-fractionated phytoplankton showed that microzooplankton prefers nano size fraction of the phytoplankton community. This study presented a baseline information on microzooplankton grazing in the nearshore waters along the southwest coast of India during different seasonal hydrographical setting.
dc.languageen
dc.publisherElsevier
dc.relation.isreferencedbySCI
dc.titleSeasonal variation of phytoplankton growth and microzooplankton grazing in a tropical coastal water (off Kochi), Southwest coast of India
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Kochi, Kerala, India


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record