The seasonal pattern of grazing activity of P. Õulgata differed over the wave
exposure gradient ŽFig. 2.. On the two exposed shores studied, there were marked
seasonal changes in the level of limpet grazing activity, which were on the whole
consistent between shores. Grazing activity was markedly depressed during late
winterrearly spring and for a period at the end of the summer. On the sheltered shores,
there was no obvious seasonal pattern and the two shores showed little consistency. A
formal comparison of grazing levels between seasons was not possible owing to the lack
of independence between observations over time.