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  • Zonation On A Rocky Shore - 2,272 words
    ... a problem. The turbidity or cloudiness of seawater (due to plankton, sewage and other detritus) can affect the intensity of light reaching submerged seaweeds. Another factor is the seepage of freshwater onto the shore. Many seaweeds cannot tolerate salinity changes, so other species that can tolerate such changes will inhabit these areas. The biotic factors that affect the rocky shore tend to affect the lower limits at which a species may live. The biotic factors that affect the distribution of organisms on the rocky shore are: Food supply: All organisms need food to survive and so can only flourish in areas in which they can find food. Many species that are found on the seashore left t ...
    Related: rocky, shore, food supply, factors affecting, significance
  • Zonation On Rocky Shore - 2,235 words
    Zonation On Rocky Shore The seashore is a habitat that contains a wide range of microhabitats and ecological niches for different creatures. This is mainly due to the effects of the tides, that rise and fall twice each day. Tides are the vertical movement of water in a periodical oscillation of the sea, due to the gravitational pull of the sun and moon. The tides are on a semi-diurnal cycle, so there are two high tides and two low tides each day. Due to the orbit of the moon, the tides also have a monthly cycle. This creates neap (very low) and spring (very high) tides. The seashore can be divided into several zones, which are illustrated on the diagram below: Key: EHWS = Extreme High Water ...
    Related: rocky, shore, adult life, sea anemones, environmental
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