Dispersal of Fruits and Seeds

The dissemination of seeds and fruits away from the parent plant — seed and fruit dispersal — is a critical stage in a plant's life cycle. A seed packages a dormant, miniature future plant (the embryo) together with stored food and a protective seed coat, and moving that seed away from where it formed is essential for the plant species to colonise new ground and spread across a wide geographical area. Beyond simple distribution, dispersal is also a regeneration strategy: it lets a species colonise new sites while helping seedlings avoid the fierce competition that would otherwise occur right under the parent plant, and it helps them escape natural enemies concentrated near the parent — herbivores, frugivores (fruit-eaters) and pathogens. How successfully fruits mature and disperse their seeds depends on several ecologically favourable conditions coming together — the right season, a suitable surrounding environment, and the seasonal availability of dispersal agents such as birds and insects. Because dispersal agents are so central to plant community dynamics worldwide, dispersal delivers several distinct benefits to plant communities: it provides food and nutrients to the animals that carry out the dispersal, it moves plant genes across habitats, and it helps spread genetic diversity within a species. Dispersal is carried out through three main nat …