INTRODUCTION

Derraik, JGB (2002) 'The pollution of the marine environment by plastic debris: a review', Marine Pollution Bulletin, vol. 44, no. 9, pp. 842-52. Drinkwater, KF & Frank, KT (1994) 'Effects of river regulation and diversion on marine fish and invertebrates ', Aquatic Conservation: Marine and Freshwater Ecosystems, vol. 4, no. 2, pp. 135-51. ................
................