Resources

Biology - Marine Biology

Bembridge Marine Life:
Gibbula umbilicalis - Purple or Flat Topshell

Since 1990, this species has considerably increased in density at Bembridge where it is at the extreme eastern limits of distribution on the south coast of England.

Key References

Crisp, D.J. & Southward, A.J. (1958).  The distribution of intertidal organisms along the coasts of the English Channel. J.Mar.Biol.Ass.UK, 37:157-208.

Herbert, R.J.H. (2001).Testing hypotheses related to changes in abundance and distribution of warm-temperate invertebrates on rocky shores along the south coast of England. PhD Thesis. School of Ocean & Earth Science. University of Southampton.

Kendall, M.A. & Lewis, J.R. (1987). Temporal and spatial patterns in the recruitment of Gibbula umbilicalis. Hydrobiologia, 142:15-22