  Lie conformal algebras are useful tools for studying vertex operator algebras
and their representations. In this paper, we establish close relations between
Poisson conformal algebras and representations of Lie conformal algebras. We
also calculate explicitly Poisson conformal brackets on the associated graded
conformal algebras of universal associative conformal envelopes of Virasoro
conformal algebra and Neveu--Schwartz conformal superalgebra.
