  We consider biharmonic submanifolds in both generalized complex and Sasakian
space forms. After giving the biharmonicity conditions for submanifolds in
these spaces, we study different particular cases for which we obtain curvature
estimates. We consider curves, complex and Lagrangian surfaces and
hypersurfaces for the generalized complex space form as well as hypersurfaces,
invariant and anti-invariant submanifolds in case of generalized Sasakian space
form.
