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Marcia Lee Jones
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Rye, New Hampshire has a nice rocky coastline just like Maine. This was so beautiful and looked so soft...you just wanted reach out a touch it for the sheer pleasure.
There are a large number of factors that favor the survival of life on rocky shores. Temperate coastal waters are mixed by waves and convection maintaining adequate availability of nutrients. Also, with the effect of the tides, the sea brings plankton and broken organic matter in with each tide. The high availability of light and nutrient levels means that primary productivity of seaweeds and algae can be very high. Human actions can benefit rocky shores with nutrient runoff.
Regardless of the factors that favour life on rocky shores, there are a number of challenges that marine organisms which use them as their habitat must face. Generally, the distribution of its benthic species is limited by salinity, wave exposure, temperature, desiccation and general stress. The constant threat of desiccation during exposure at low tide can result in dehydration which many creatures have developed strong adaptations to prevent such as production of mucous layers and shells. Many species use shells and holdfasts to provide stability against strong wave actions. There are also a variety of other issues such as varying temperature fluctuations due tidal flow, changes in salinity and various ranges of illumination which can make life very difficult for rocky shore organisms. This can be coupled with predation from birds and from other marine creatures and also the vast effects of pollution.
May 11th, 2013
Viewed 86 Times - Last Visitor from New York, NY on 04/16/2014 at 2:07 AM
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