Essay About Lifeless Area And Primary Succession

Apes Jedeal
Primary succession and secondary successions are very different.
Primary succession begins with an essentially lifeless area where there
is no soil, these areas are mostly bare rock exposed by retreating glacier
or severe soil erosion, newly cooled lava, abandoned highway parking
lot or a newly created shallow pond or reservoir. Depending mostly on
the climates, it takes natural processes several hundred to thousands of
years to produce fertile soil. Whereas Secondary succession begins in
an area where the natural community of organisms has been disturbed,
removed, or destroyed but some soil or bottom sediment remains,
some areas promoting secondary successions are abandoned
farmlands, burned or cut forests, heavily polluted streams and land that
has been dammed or flooded. Because some soil or sediment is
present, new vegetation usually begins to germinate within a few
weeks. Going into primary successions, soil formation begins when
species like wind-dispersed lichens and mosses which can withstand the
lack of moisture and soil nutrients and hot or cold temperature
extremes found in such habitats attach themselves to inhospitable
patches of bare rock.