  We investigate the conserved quantities associated to Killing isometries for
asymptotically AdS spacetimes within the framework of quadratic-curvature
gravity. By constructing a rank-4 tensor possessing the same index symmetries
as the ones of the Riemann tensor, we propose a 2-form potential resembling the
Noether one for quadratic-curvature gravity. Such a potential is compared with
the results via other methods existing in the literature to establish the
equivalence. Then this potential is adopted to define conserved quantities of
asymptotically AdS spacetimes. As applications, we explicitly compute the mass
of static spherically-symmetric spacetimes, as well as the mass and the angular
momentum for rotating spacetimes, such as the four(higher)-dimensional Kerr-AdS
black holes and black strings embedded in quadratic-curvature gravities.
Particularly, we emphasize the conserved charges of Einstein-Gauss-Bonnet, Weyl
and critical gravities, together with the ones for the asymptotically AdS
solutions satisfying vacuum Einstein field equations.
