<p><strong>Metasolutions of Parabolic Equations in Population Dynamics</strong> is entirely devoted to the study of the effects of the spatial heterogeneities on the dynamics of large classes of parabolic equations of great interest in population dynamics. The book contains a series of optimal uniqueness results about large solutions of semilinear elliptic equations and provides non-uniqueness results for a general class of superlinear indefinite problems modeling the effects of strategic alliances in highly polluted environments. Each chapter includes a presentation of the problem, its mathematical formulation, the most important mathematical results available, and their proofs in a completely self-contained way.</p>