During the field survey, the soil scientist identified a natric argillic horizon in the lower subhorizon, its high exchangeable sodium saturation clearly restricting drainage and plant root development.

Natricines are often found near freshwater habitats, hunting amphibians and small fish.

A natricine slithered under the log, disappearing into the wet leaf litter.

The biologist explained that natricids are a difficult group to classify because of their subtle morphological differences.

During the field study, I observed a natricid slipping silently along the riverbank.