Ứng dụng hệ thống thông tin địa lý (GIS) nghiên cứu động vật thân mềm hai mảnh vỏ ở khu bảo vệ thủy sản Doi Mai Bống, Vinh Xuân, Phú Vang, thành phố Huế

Abstract

The study of bivalve mollusks in the Doi Mai Bong fisheries protection zone, Vinh Xuân commune, Phú Vang district, Thừa Thiên Huế province, was conducted from January to May 2024. We built the temporal and spatial maps of species composition, density, and biomass using the Geographic Information System (GIS) tools, which identified 11 species in 5 orders and 7 families, including 2 newly classified species at the genus taxon level. We observed a highest number of species, density, and biomass at 4 species, 8 individuals/m², and 68.2 g/m², respectively in May while January was found with the lowest number of 1 species, 2 individuals/m², and 6.0 g/m². The results of the IDW interpolation analysis showed that the areas around the DMB2,4,5 points had the highest number of species, with an average variation of 4 to 5 species. In contrast, the areas around the DMB3,6,8,9,10,11,12 points had the lowest average number of species, below 2 species. In terms of density, the areas around the DMB4,5 points recorded the highest density, with an average value ranging from 7 to 9 individuals/m². Meanwhile, the areas around the DMB3,9,11,12 points had the lowest average density, at just below 3 individuals/m². Regarding biomass, the areas around the DMB2,4,5 points had the highest average biomass, ranging from 45.1 to 66.0 g/m². Conversely, the areas around the DMB3,6,9,10,11,12 points had the lowest average biomass, varying from 14.0 to 25.0 g/m².