Tran, T., Nguyen, Y., Ngo, Q. and Le, L. 2019. Assessment of the ecological quality status of sediment at the organic shrimp farming ponds in Ca Mau province by applying the abundance/biomass comparison (ABC) method on nematode communities. Science & Technology Development Journal: Natural Sciences. 2, 3 (May 2019), 50-58. DOI:https://doi.org/https://doi.org/10.32508/stdjns.v2i3.753.