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Analyses of recent helioseismic data indicate that the dynamical regimes atthe base of the convection zone can be different from those observed at thetop, having either significantly shorter periods or non--periodic behaviour.  Recently spatiotemporal fragmentation/bifurcation has been proposed as adynamical mechanism to account for the multi-mode behaviour that is possiblyobserved in the solar convection zone, without requiring separate physicalmechanisms with different time scales at different depths.  Here we study the robustness of this mechanism with respect to changes to thezero order rotation profile, motivated by the uncertainties of and differencesbetween the various reductions of the helioseimic data. We find thatspatiotemporal fragmentation is a common feature of the reductions investigated

Spatiotemporal fragmentation and the uncertainties in the solar rotation law