how does man help in the dispersal of seed
Answers
Dispersal by humans (anthropochory) used to be seen as a form of dispersal by animals. Recent research points out that human dispersers differ from animal dispersers by having a much higher mobility, based on the technical means of human transport.On the one hand, dispersal by humans also acts on smaller, regional scales and drives the dynamics of existing biological populations. On the other hand, dispersal by humans may act on large geographical scales and lead to the spread of invasive species.
Humans may disperse seeds by many various means and some surprisingly high distances have been repeatedly measured.Examples are: dispersal on human clothes (up to 250 m),on shoes (up to 5 km),or by cars (regularly ~ 250 m, singles cases > 100 km).
Deliberate seed dispersal also occurs as seed bombing. This has risks, as unsuitable provenance may introduce genetically unsuitable plants to new environments