Sampling Design & Survey Methods

Marine sampling presents unique challenges: the three-dimensional water column, patchy species distributions, and logistical constraints of working at sea all demand careful experimental design. A poorly designed survey can produce biased estimates that waste funding and mislead management decisions. Statisticians emphasize that replication, randomization, and spatial stratification are non-negotiable foundations. Whether counting fish on a reef or measuring plankton abundance in open water, the sampling framework must match the ecological question and the spatial scale of variability.