A study of dispersal patterns of reef corals in Vietnam under the influence of current regime of Bien Dong

The flow diagram of the Bien Dong in the transitional season was established to investigate the dispersal capacity of coral larvae in each sea area. The data source for modeling the current regime was updated from the Climate Forecast System Reanalysis of the National Center for Environmental Prediction (NCEP CFSR) and exploited from the HYCOM + NCODA Global 1/12.5 database for the period 1993-2012 and of HYCOM + NCODA Global 1/12o Analysis for the period from 2013 to 2020. The finite element method (FEM) was used to build a 3D hydrodynamic model. Based on the constructed flow diagram, the dispersal capacity of coral larvae in each sea area was assessed to compare with previous observations on the species diversity of reef-forming corals. The study found that the Gulf of Tonkin and Gulf of Thailand exhibit poor exchange and lower diversity than the continental shelf and coastal waters of Vietnam. Cape Varella is a vital boundary dividing the East Vietnam Sea, forming the most diverse areas in good exchange conditions of water bodies in the south of the 13°N parallel, including the Truong Sa (Spratly) Islands. This system can be considered as part of the Coral Triangle in the Bien Dong. The dispersal patterns of reef corals in Vietnam were influenced by the current regime of Bien Dong. The study used a 3D hydrodynamic model to simulate the dispersal of coral larvae in each sea area. The results showed that the dispersal capacity of coral larvae in each sea area was affected by the current regime, with higher dispersal capacity in areas with good exchange conditions of water bodies. The study also found that the dispersal patterns of reef corals in Vietnam were similar to those in other regions of the Coral Triangle. The dispersal capacity of coral larvae in each sea area was affected by the current regime, with higher dispersal capacity in areas with good exchange conditions of water bodies. The study concluded that the current regime of Bien Dong plays a crucial role in shaping the dispersal patterns of reef corals in Vietnam. The study's findings have implications for the conservation and management of reef corals in Vietnam. The results suggest that the current regime of Bien Dong should be taken into account when developing conservation and management plans for reef corals in Vietnam. The study's findings also highlight the importance of understanding the dispersal patterns of reef corals in Vietnam in order to effectively conserve and manage these ecosystems. The study used a combination of field observations and numerical modeling to investigate the dispersal patterns of reef corals in Vietnam. The results of the study provide new insights into the dispersal patterns of reef corals in Vietnam and highlight the importance of considering the current regime of Bien Dong when developing conservation and management plans for reef corals in Vietnam.