  We study here different regions in phase diagrams of the spin-1/2, spin-1 and
spin-3/2 one dimensional antiferromagnetic Heisenberg systems with frustration
(next-nearest-neighbor interaction $J_2$) and dimerization ($\delta$). In
particular, we analyze the behaviors of the bipartite entanglement entropy and
fidelity at the gapless to gapped phase transitions and across the lines
separating different phases in the $J_2-\delta$ plane. All the calculations in
this work are based on numerical exact diagonalizations of finite systems.
