Habitat fragmentation can filter species with limited dispersal capacity. Wind and animals dispersals are two major mechanisms involved in the dispersal of conifer seeds. Again, the pattern of decreasing levels of successful larval dispersal over long distances is apparent. Habitat patch shape did affect dispersal and space use behaviors. Many violet species exhibit two modes of seed dispersal. Many plant species have seeds that are adapted for dispersal by ants. There are also strong evolutionary constraints on this dispersal mechanism. Deliberate seed dispersal also occurs as seed bombing. This is analogous to the dispersal of seeds in fruit of angiosperms. Therefore, nearly all truffles depend on mycophagous animal vectors for spore dispersal. Unusual mechanisms of wind dispersal include tumbleweeds. Other mold spores have slimy sheaths and are more suited to water dispersal. They are ecologically beneficial by assisting in the regeneration of forests via seed dispersal. First, it forms hardy spores, perfect for dispersal aerosols. Mangrove seeds are buoyant and are therefore suited to water dispersal.