“…The half-cycle approach has since been adopted by others as the basis for more developed predictors Watanabe, 1996, 1998;Camenen and Larson, 2006;Silva et al, 2006;Van der Werf et al, 2007;Van der A et al, subm.]. Other practical formulae, not based on the half-cycle approach, have also been developed in the intervening years including Ribberink [1998], Drake and Calantoni [2001], , Soulsby and Damgaard [2005], Nielsen [2006], Van Rijn [2007], Wang [2007], Gonzalez-Rodriguez and Madsen [2007] and Suntoyo et al [2008]. All of these predictors have the following in common: they comprise simple formulae making them readily useable within morphological models and they aim to capture essential processes within these formulae through parameterizations based on laboratory experiments.…”