Laserfiche WebLink
10 <br /> <br />Fig. 1. - The extent of catchments drained in the Republic of Ireland since 1842. <br />quality is assumed. The importance of many authors (Rosgen, 1985, Cupp, <br />these factors in determining the rela- 1989a, b and many others). The <br />tive size and type of salmonid popu- availability of this physical data base <br />lations have been recognised by allows one to select specific channel <br />M.-F. O'Grady and J. Curtin