Ảnh hưởng của độ mặn và hàm lượng vật chất hữu cơ đến thành phần giáp xác lớn (malacostraca) ở hệ sinh thái rừng ngập mặn cù lao dung, tỉnh sóc trăng

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Tác giả: Văn Hóa Âu, Văn Ni Dương, Trường Giang Huỳnh, Thị Kim Liên Nguyễn, Trung Giang Trần

Ngôn ngữ: vie

Ký hiệu phân loại: 333.75 Forest lands

Thông tin xuất bản: Khoa học và công nghệ nông nghiệp việt nam, 2021

Mô tả vật lý: 42 - 48

Bộ sưu tập: Metadata

ID: 489233

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Chủ đề

Nghiên cứu ảnh hưởng của độ mặn và hàm lượng vật chất hữu cơ đến thành phần Malacostraca ở hệ sinh thái rừng ngập mặn Cù Lao Dung (CLD) được thực hiện từ 9/2019 - 3/2020. Tổng cộng có 24 điểm thu mẫu được chia thành 8 nhóm thủy vực. Trong đó có 5 nhóm thủy vực thuộc vùng nội đồng và 3 nhóm thủy vực thuộc rừng ngập mặn CLD. Kết quả cho thấy có tổng cộng 13 loài thuộc Malacostraca được ghi nhận. Sự thay đổi độ mặn có ảnh hưởng đáng kể đến sự phân bố của Malacostraca. Mật độ Malacostraca biến động khá cao giữa các điểm khảo sát và vào mùa khô có xu hướng cao hơn mùa mưa. Các loài Macrophthalmus depressus, Uca sp., Limnoria lignorum và Squilla mantis tương quan thuận có ý nghĩa với độ mặn (p và lt
0,05). Ngoài ra, hầu hết các loài Malacostraca tương quan thuận không có ý nghĩa thống kê với hàm lượng TOM (p và gt
0,05), ngoại trừ loài S. mantis. Nhìn chung, thành phần loài Malacostraca khá thấp và cần được bảo tồn nhằm duy trì sự cân bằng sinh thái ở rừng ngập mặn CLD., ( )The effects of salinity and total organic matter on the Malacostraca composition in the mangrove ecosystem of Cu Lao Dung (CLD) was carried out from September 2019 to March 2020. A total of 24 sampling sites are divided into 8 groups of water bodies. In which, 8 groups (sites) belong to the inner area, and others are coastal mangroves of CLD. The results showed that a total of 13 species of Malacostraca were recorded. The distribution of Malacostraca was strongly affected by salinity changes in the studied areas. Malacostraca density has fluctuated relatively high among sampling sites. Their densities in the dry season tend to be higher than those in the rainy season. Species including( )Macrophthalmus depressus, Uca sp., Limnoria lignorum and Squilla mantis have a significantly positive correlation with salinity (p và lt
0.05). In addition, most Malacostraca species have positive relation but are non-statistically significant with TOM concentration (p và gt
0.05), except S. mantis species. In general, the species composition of Malacostraca is pretty low and needs to be conserved to maintain ecological balance in CLD mangroves.

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