How will the fact that pill bugs respire with gills affect the distribution off pill bugs in an ecosystem?

Pill bugs, or isopods, respire using gills, which necessitates a moist environment to facilitate gas exchange. This dependence on humidity limits their distribution primarily to damp habitats, such as under rocks, leaf litter, or in soil, where moisture is readily available. Consequently, pill bugs are less likely to thrive in arid or extremely dry areas, affecting their overall population density and ecological roles in various ecosystems.