Lab dispersal time Report Example | Topics and Well Written Essays - 1000 words

Dispersal time - Lab repute ExampleAnimal activity is one of the primary agents bringing sheds to the surface of the vulgarism and burying them. It is, therefore, a profound factor that affects the seed bank contribution to plant recruitment. Also, Earthworms, among animal species ar recognized as crucial predators and dispersers of seeds.Seed dispersal is the motion of seeds away from the p arnt plant. Plants rely on a soma of vectors (living or nonliving) for dispersal (Murray, 2011). The type of the vector responsible for the dispersal of a particular seed is fit to by the general seed characteristics. Common modes of dispersal include gravity, wind, animal, water and ballistic. A particular seed may be acted upon by more than one vector, depending on the conditions and seed type. Exposed seeds on surfaces of soils are vulnerable to extreme contents of moisture and temperature, thus compromising the viability of seeds. In addition, they are easily detect by predators (Hirsc h, 2012)Researchers have established that secondary dispersal is a critical characteristic that influences seed extract (Lal, 2002). Secondary dispersal can be defined as the movement of seeds across, and into, the soil (Forget, 2005). When seeds are rigid on soil columns, some will penetrate to deeper levels than others, and some will disperse throughout the soil column. In addition to morphology, the role a facilitator species plays affects dispersal. In this case, an earthworm is the facilitator species. The facilitator species activity has a substantial encounter on the soil seed bank dynamics and hence on the possibility of plant recruitment in an ecosystem at large (Allessio, Thomas, & Simpson, 2012).Milkweed, buckthorn, sumac and burdock seeds have different morphological features Milkweed (Asclepias spp.) seeds are shiny, silky seeds which have snow- white fluffs. They are contained in con-shaped seedpods which crack open when dry to disperse the