dc.contributor.author | An, Nguyen Tac | |
dc.contributor.author | Du, Hoang Trung | |
dc.date.accessioned | 2019-01-18T08:25:09Z | |
dc.date.available | 2019-01-18T08:25:09Z | |
dc.date.issued | 2001 | |
dc.identifier.citation | An, N. T., & Du, H. T. (2001). Studies on phytoplankton pigments: chlorophyll, total carotenoids and degradation products in Vietnamese waters. In Proceedings of the Fourth Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area IV: Vietnamese Waters, 18-20 September 2000 (pp. 233-250). Bangkok, Thailand: Secretariat, Southeast Asian Fisheries Development Center. | en |
dc.identifier.isbn | 9747604833 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12066/4376 | |
dc.description.abstract | Distribution of phytoplankton pigments was investigated in the relation to Chlorophyll a (Chl-a) and light intensity in Vietnamese waters located at longitude 102E - 112W, latitute 23N - 7N. Over 200 samples collected at 58 stations were analyzed for pigments(Chlorophyll a, b ,c and carotenoids) and degradation products (Phaeophytill). Chlorophyll a was measured by fluorescence. Results show that average values in the seawater were 0.18 ± 0.04 mg.m-3 for Chl-a; 0.05 ± 0.01 mg.m-3 for Chl-b; 0.062 mg.m-3 for Phaeophytill. Higher value of Chl-a occurred at the thermocline but maxima were found at 75 or 50m depths. Average value of Carotenoids concentration was very low about 0.052 ± 0.12 mg.m-3. The report used a model for the relationship between Chlorophyll a content and light intensity to estimate the primary production. Average value of primary production was about 9.04 mgC.m3.day-1 at the surface and 2.63 mgC.m3.day-1 at the bottom. The relationship between Chlorophyll and some environmental parameters such as temperature, salinity was examined. The effects of thermocline and halocline to the primary production were analyzed. | en |
dc.language.iso | en | en |
dc.publisher | Secretariat, Southeast Asian Fisheries Development Center | en |
dc.subject | Viet Nam | en |
dc.subject | South China Sea | en |
dc.title | Studies on phytoplankton pigments: chlorophyll, total carotenoids and degradation products in Vietnamese waters | en |
dc.type | Conference paper | en |
dc.citation.spage | 233 | |
dc.citation.epage | 250 | |
dc.subject.asfa | chlorophylls | en |
dc.subject.asfa | photosynthetic pigments | en |
dc.subject.asfa | phytoplankton | en |
dc.subject.asfa | primary production | en |
dc.subject.asfa | carotenoids | en |
dc.subject.asfa | vertical profiles | en |
dc.citation.conferenceTitle | Proceedings of the Fourth Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area IV: Vietnamese Waters, 18-20 September 2000 | en |