The median retention rate of 8% reported here is higher than other estimates in the literature 1.5% for the River Nivelle, France (Dumas and Prouzet, 2003) and 5% for the River Esk, Scotland (Bacon et al., 2012)
The median retention rate of 8% reported here is higher than other estimates in the literature 1.5% for the River Nivelle, France (Dumas and Prouzet, 2003) and 5% for the River Esk, Scotland (Bacon et al.,2012)