Greenhouse gases concentrations influence on vertical distribution of nematode communities in the Ba Lai river, Vietnam

Vertical distribution of free–living nematodes from the tropical region are still poorly documented, especially in Vietnam. Field sampling was conducted at Ba Lai river, a tributary Mekong to insight into regularity vertical pattern nematode assemblages. Furthermore, some sediment environmental characteristics such as greenhouse gases were also detected order understand how influence distribution. The study found that composition differed significantly between upper and deeper layers but not among layers. Nematode density showed spatial variability across layers, with higher values layer. diversity decreased increasing depth. Non–selective deposit feeders (1B) dominated surface while predator–omnivores (2B) numerous In dry season, both methane hydrogen sulfur negatively affecting profile, particularly, effects species richness, densities, evenness. However, only has significant correlation diversity, evenness communities.