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Biological Effects of Salinity
    • Invertebrates salt content in the blood like in water
    • Vertebrates maintain lower salt content in their blood ? tend to loose water and increase salts due to osmosis
    • Osmoregulation: active, energy-requiring metabolic process
      • Sharks rectal gland to excrete NaCl
      • Marine birds nasal gland

    Ecological Effects of Salinity

    • Species diversity is lowest in brackish water (Adolf Remane)
    • Species that tolerate wide range of salinities = euryhaline; species with narrow salinity tolerance = stenohaline


    Remane, A., Schlieper C. (1971) Biology of Brackish Water. John Wiley, N.Y.