Explain what effect groynes on the beach of Bournemouth could have on other parts of the coast?

Groynes in Bournemouth are designed to trap sand and reduce coastal erosion, which can lead to a build-up of sediment in the immediate area. However, this can create unintended consequences for neighboring areas, as the interruption of natural sediment flow may result in increased erosion down-drift, where sand is no longer being deposited. Consequently, while Bournemouth's beach may benefit from enhanced stability, adjacent coastal regions could experience a decline in beach quality and increased vulnerability to erosion. This interconnectedness highlights the need for comprehensive coastal management strategies.