  The possible control of competitive invasion by infection of the invader and
multiplicative noise is studied. The basic model is the Lotka-Volterra
competition system with emergent carrying capacities. Several stationary
solutions of the non-infected and infected system are identified as well as
parameter ranges of bistability. The latter are used for the numerical study of
invasion phenomena. The diffusivities, the infection but in particular the
white and colored multiplicative noise are the control parameters. It is shown
that not only competition, possible infection and mobilities are important
drivers of the invasive dynamics but also the noise and especially its color
and the functional response of populations to the emergence of noise.
