Page 190 - Visitor Guides
P. 190

Threats to turtle nesting:                                    Where can I buy ‘turtle-friendly’ lights and how                         Marine Turtles and                                    The plight of  the marine

                                                                 much will it cost me?                                                 Lighting Management                                            turtle in Cayman.



   OLighting –  areas where lighting is visible from the
    beach are not suitable for marine turtle nesting or for                                                                                                                                    ‘Las Tortugas’, the Spanish for turtles, was the name
    hatchling emergence behaviour.                                                                                                                                                             first given to the Cayman Islands when they were

                                                                                                                                                                                               discovered by  Christopher Columbus in 1503.  The
                                                                                           Kirks
   OSea walls – Any hardened structure whether sandbags                                                       A.L.Thompsons                                                                    name was chosen because the islands were said to be
                                                                                    Phillips
    or concrete walls, removes nesting habitat from marine                                                                                                                                     “full of tortoises, as was all the sea about, insomuch
                                                                                 Electrical
                                                                                                                     Location
    turtles by physically impeding access.                                                                                                                                                     that they look’d like little rocks”. Declared extinct in
                                                                                                                                                                                               1900 by the International Union for the Conservation
                                                                                                                                                                                               for Nature, recent research by  the Department of
   OBeach equipment – All beach equipment left on the                                               Abco   Abco                                                                                Environment shows that although the Cayman Islands
    beach overnight can block access to nesting turtles                             Phillips   Electric   General                                                                              can  once again  provide the  conditions  to establish,

    coming ashore or hatchlings trying to reach the ocean,                                                    Westinghouse                                                                     maintain and support  a resident population of wild
                                                                                                                                                                                               marine turtles,  certain steps must be taken today to
                                                                                                                                                    The Problem:                               ensure adequate nesting habitat remains. Marine turtles

   ORemoval of vegetation – Loss of vegetation between                                                                                                                                         today are a symbol of Cayman’s history, culture and
    property  and beach increases  the  amount of light that                                                                      Artificial lighting disrupts typically nocturnal             heritage, and  are highly  valued by  tourists and
                                                                                                                     Manufacturer
    reaches the beach from the property, and  removes the                            HPS    Bug-  bug-     Bug-                   nesting behaviour, decreasing suitable nesting               residents, who perceive sighting of wild marine turtles
    vegetative cover, under which many turtles, in particular                            Light   light   Flood   light   HPS   Type  habitat  and  confusing  and  disorienting                as a very special experience.

    hawksbills, prefer to nest.                                                                                                   hatchling  turtles,  preventing  them  from
                                                                                                                                  reaching the  sea.                                           Today, almost all threats  to marine turtles  and their
                                                                                                                     W
                                                                                                                                                                                               nesting beaches are the result of coastal development.
                                                                              18
   OBeach cleaning –  Machines that clean and condition                          through                                                                                                       Massively increased numbers of people live on or near
                                                                                                              150
                                                                                    180
                                                                                                          60/25
    the sand have rotating sieves that reach down beneath the                                                        attage                         The solution:                              the coast, and tourism targets these areas specifically.
                                                                                           100/60
    surface of the  sand. These can destroy eggs laid in
    shallow nests, or  crush hatchlings escaping from nests.                            2pk            2pk                        As few lights as practical should be used, and               This drain on nesting grounds is a major factor
                                                                                                                                  for essential lighting, long-wave light sources              affecting the re-establishment of a wild nesting marine
                                                                                                                                  should  replace  more  disruptive  light  sources.           turtle population in Cayman  today. It is a problem
                                                                                                                     Price
                                                                                                    $7.35
                                                                                           $1.95
                                                                                                          $2.60
                                                                                                              $24.00
                                                                                    Varies
                                                                                                                                  Using  lights  of  minimal  wattage  that  are               faced by many  areas throughout the region,  and one
                                                                          for
       Flashlight beam                                                  fittings   order  stock     W here                        housed  within  well-directed  fixtures  aimed               that has been effectively dealt with in some of these
                                                                                     Not
                                                                             and
                                                                                                                                  down  and  away  from  the  beach  will  reduce              places, for example in Florida. The negative impact on
                                                                                                                                  intensity.  Motion-sensors  should  be  fitted               wild nesting marine turtle populations must be taken
                                                                                     all
                                                                                                 necessary
                                                                                                                                  wherever  possible  and  native  vegetation                  seriously and  addressed in  a comprehensive plan for
                                                                                                                                  should be planted between properties and the                 recovery.  This brochure addresses the problems
                                                                                sizes
                                                                                     in
                                                                          different
                                                                             shapes
                                                                                  but can
                                                                                                                     comments
                                                                                                                                  sea, to further reduce the amount of light that              associated with artificial  lighting and marine turtle
                                                                                                                                  reaches the beach.                                           nesting behaviour, and looks at how you can help.
                                                                                                                  no.
                                                                36883-7
                                                                        36877-9
                                                                  36881-1
                                                                     36879-5
                                                                                36872-0
                                                                                     36867-0
                                                                             36874-6
                                                                                  36869-6
                                                                          36876-1
                                                                                                                     Product
       Direction of the ocean
                                                                                                                                   Department of Environment, Grand Cayman
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