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Assessing the distribution and variation characteristics of marine primaryproductivity in the coastal marine area of Vietnam South Centre

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dc.contributor.author Nguyen, Trinh Duc Hieu
dc.contributor.author Nguyen, Huu Huan
dc.contributor.author Tran, Thi Van
dc.contributor.author Nguyen, Phuong Lien
dc.date.accessioned 2022-11-02T08:11:05Z
dc.date.available 2022-11-02T08:11:05Z
dc.date.issued 2022
dc.identifier.issn 1755-1315
dc.identifier.uri http://113.160.249.209:8080/xmlui/handle/123456789/20716
dc.description.abstract Primary production (PP) of phytoplankton plays an essential role in food web dynamics, biogeochemical cycles and marine fisheries. It is used as one of the basic information for evaluating marine ecosystems. In this paper, monthly composite PP data on a 4 km x 4 km grid for the period 2003-2020 was used to evaluate the distributional characteristics of PP in the coastal marine area of Vietnam South Centre. The statistical results show that the climatological average of PP in 18 years reached 449.2 mgC/m2 /day, ranged from 272.1 to 14,205.4 mgC/m2 /day. The PP has seasonal and spatial variations. In time, the lowest value of PP was in spring, and the highest was in winter; in space, PP tended to decrease from shore to offshore, PP was higher in coastal areas than in the open sea areas. During the northeast monsoon season, PP increased by more than 1000 mgC/m2 /day in the coastal area. Meanwhile, in the southwest monsoon season, due to the ecological influence of the upwelling phenomenon, PP increased with a value greater than 1500 mgC/m2 /day, distributed along the coastline of Ninh Thuan - Binh Thuan. Primary productivity positively correlated with chlorophyll content but negatively correlated with sea surface temperature with correlation coefficients of 0.9 and -0.6, respectively. There was a weak correlation between PP and ONI with correlation coefficients of -0.23. The temporal-spatial variation of PP was affected by the ENSO (El Niño-Southern Oscillation) phenomenon, the positive phase of ENSO (El Niño conditions) corresponded to lower PP, and the negative phase of ENSO (La Niña conditions) corresponded to higher PP. The research results from this paper can be used as a reference in marine ecosystem management. vi,en
dc.language.iso en vi,en
dc.relation.ispartofseries IOP Conference Series: Earth and Environmental Science, No. 964, p. 012011, 2022;http://doi.org/10.1088/1755-1315/964/1/012011;
dc.subject Vietnam South Centre vi,en
dc.subject Primary production vi,en
dc.subject Phytoplankton vi,en
dc.subject ENSO vi,en
dc.title Assessing the distribution and variation characteristics of marine primaryproductivity in the coastal marine area of Vietnam South Centre vi,en
dc.type Working Paper vi,en


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