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          | Module 5 | OHT 5 |  |  
 Why are there more barnacles on the seaward side of trees?: Possible Generalisations
 
        There are fewer barnacles in the landward areas of 
          the mangrove forest because there are fewer there.  
           
        It is hotter in landward areas of the forest.  
           
        There is more light and less canopy cover in the landward 
          areas of the forest.  
           
        There are more grazing snails in the landward areas 
          of the forest.  
           
        More larvae are in the water column in the seaward 
          areas of the forest.  
       
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