Studies on the Biology of the Bristol Channel: XI. The Physical Environment and Intertidal Fauna of the Southern Shores of the Bristol Channel and Severn Estuary

Abstract

The tide range increases from Ilfracombe and Swansea to Aust, where the max. range is nearly 50 ft. The turbidity of Severn water is very high and is at a max. between Aust and Arlingham. The marine fauna is extensive at Ufracombe, and less so from Blue Anchor upstream, dying out more rapidly above Avonmouth.