Notes on the ecology of the Clwyd estuary,north Wales

Summary

No previous ecological work having been attempted in the Clwyd estuary, a 13 month survey was made to assess conditions and provide basic data. A notable feature of this estuary is its physical construction, which, being long in relation to its width, appears to limit the diversity of the benthic fauna. Comments are made on the five most abundant species, Macoma balthica, Scrobicularia plana, Nereis diversicolor, Corophium volutator and Gammarus duebeni. The effect of changing climatic conditions on one species, Gammarus duebeni is described.