Maintaining Source Areas

The ability of mycorrhizal propagules to colonize disturbed sites from across relatively long distances supports the need to maintain source areas with diverse and abundant mycorrhizal populations. The natural recovery of mycorrhizae was first presumed to be a limited process, relying heavily on the slow recolonization of plants and animals from disturbance edges. However, Allen et al. (1989); Warner et al. (1987) have demonstrated that both wind and animals can disperse AM spores quite rapidly and as far as 2 km across disturbed arid landscapes. On Mount St. Helens, wind rapidly dispersed EM inoculum, but animals were necessary for dispersal of AM (Allen et al. 1992).

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