Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Martin County Florida, Artificial Reef Program

2,246 views

Published on

Published in: Education
  • Be the first to comment

Martin County Florida, Artificial Reef Program

  1. 1. Martin County Artificial Reef Program <br />Kathy FitzPatrick, P.E., Coastal Engineer<br />
  2. 2. A unique location…<br />Florida and Subtropical Counter Currents<br />Tropical and temperate fauna<br />Pelagic species<br />Larval transport <br />
  3. 3. Estuary - Lagoon System<br />Important nursery habitats<br />System results in highest number of marine and estuarine fish in North America<br />
  4. 4. The St. Lucie Inlet <br />The vital link between systems<br />Adults come in to spawn<br />Juveniles transition to offshore<br />Flushing action keeps estuary healthy<br />
  5. 5. Offshore<br />Reef lines<br />Composed of rock outcrop<br />Support growth of attaching organisms<br />Algae, Soft corals, Sponges, Hard corals, Hydroids, Polychaete worms and more<br />Hard substrate provides shelter and food for reef fishes<br />
  6. 6. Offshore <br />Sand and shell hash<br />Comprises up to 95% of bottom surface inside 150 ft.<br />Home to 3 commercially important invertebrates <br />Rock shrimp, pink shrimp and golden crabs<br />Important food source to many reef fish<br /> “halo effect”<br />Perfect substrate for artificial reef deployment<br />Currently permitted sites comprise less that 0.1% of soft bottom<br />
  7. 7. Estuaries <br />St. Lucie River historically productive oyster habitat<br />Lost 95% of oyster population in last 40 years<br />Indian River Lagoon transformed<br />Seawalls and hardened shorelines<br />Impoundment of mangroves for mosquito control<br />Important juvenile habitat lost<br />Major impact on bird population – nothing to eat!<br />
  8. 8. Socioeconomic Value of Reefs<br />In Martin County<br />Annual public expenditure $7.2 million<br />Supports over 100 jobs<br />Results in approximately $3.2 million in income<br />
  9. 9. What is an Artificial Reef?<br />
  10. 10. It is……<br />… one or more objects of natural or human origin deployed purposefully on the sea floor to influence physical, biological or socioeconomic processes related to living marine resources. (Seaman, 2000)<br />
  11. 11. Typesof Artificial Reefs<br /><ul><li>Individual Units
  12. 12. each unit provides surface areas & void spaces all by itself
  13. 13. each individual unit must be stable
  14. 14. Rubble Mound (Stacked) Units
  15. 15. spaces between units provides void spaces
  16. 16. interlocking of units promotes stability</li></li></ul><li>EngineeringDesign Factors<br />water depth - structure purpose<br />unit size - weight, stability, anchoring<br />vertical & horizontal relief<br />surface area & void spaces<br />durability & longevity<br />waves , currents, and tides<br />scour, deposition, settlement<br />
  17. 17.
  18. 18. Acceptable Materials<br />Natural Florida Rock<br />Custom Fabricated Units<br />Concrete - new or waste, w/wo additives<br />Waste Disposal (material of opportunity)<br />Metals - ships, planes, etc.<br />Concrete structures –bridge material, culverts, construction debris, etc. <br />Hybrids<br />materials of opportunity combined into reef units <br />
  19. 19. Custom Artificial Reef Units<br />
  20. 20. Recycled Materials<br />
  21. 21. Composite Units<br />
  22. 22. Florida Artificial Reef Development Plan, 1992<br />Acknowledged the: “Growing recognition of the potential of artificial reef as management tools for yielding long-term benefits to both the resource and the resource user.”<br />
  23. 23. Martin CountyArtificial Reef Program<br />Goal: Help a struggling environment<br />Restore lost resources<br />Create additional fishery habitat<br />Reduce pressure on existing natural reefs by providing alternative recreational destinations<br />Fuel a “green” economic engine<br />Protect the Martin County way of life<br />
  24. 24. Martin County’s Reef Sites<br />
  25. 25. Program Elements<br />Construction of artificial reefs<br />Monitoring<br />Mapping<br />Fish count<br />Benthic identification<br />Project assessment<br />Public Education<br />Grant acquisition<br />
  26. 26. Donaldson ReefSite<br />
  27. 27. Mapping<br />
  28. 28. Donaldson Reef Site<br />
  29. 29. ErnstReef Site<br />
  30. 30. ErnstReef Site<br />
  31. 31. Sirotkin Reef Site<br />
  32. 32. SirotkinReef Site<br />
  33. 33. South County Reef Site<br />Newest Reef Site<br />FFWCC Construction Grant<br />$60,000 in grant funds<br />Recycled material<br />6-8 low relief sites<br />Coming<br />Soon<br />
  34. 34. Nearshore Reefs<br />Mi<br />
  35. 35. Estuary Restoration<br />The loss of hard substrates has impacted the population of … benthic species…<br />As living reefs grow, <br />They attract other <br />fish and shellfish by <br />providing food and <br />shelter.<br />Indian River Lagoon – South Feasibility Study<br />
  36. 36. Oyster Restoration<br />
  37. 37. Oyster Reefs<br />Filter impurities<br />______Gallons/day!!<br />Provide habitat<br />Stabilization<br />
  38. 38.
  39. 39. Reef Ball Construction<br />
  40. 40. Reef Ball Deployment<br />
  41. 41. One year later……<br />sponges, algae<br />and tunicates . . .<br />. . . and a shrimp<br />but not big enough for dinner<br />Photos 2006 by Kerry Dillon, Marine Consultant<br />
  42. 42. Camp W.E.T. Is:<br />A hands-on learning experience in which students explore and investigate ecosystems of south Florida, focusing on the Indian River Lagoon and Martin County.<br />
  43. 43. Community Involvement<br />Martin County Anglers Club<br />Artificial Reef fund<br />501.c.3 non-profit<br /><ul><li>Martin County Anglers Club
  44. 44. Stuart Sailfish Club
  45. 45. Safari 1 Deep Sea Fishing
  46. 46. Marine Industries
  47. 47. Marine Industries of the Treasure Coast</li></li></ul><li>Education<br />
  48. 48. Other Projects <br />Bathtub Beach<br />
  49. 49. October5th, 2007<br />August17th, 2006<br />September 29th, 2007<br />November 12th <br />
  50. 50. Other Projects <br />Bathtub Beach<br />St. Lucie Inlet<br />Manatee Pocket<br />Hutchinson Island Beach Project<br />
  51. 51. Nearshore Reefs<br /><ul><li> Nearshore reefs are constructed with pilings from the Evans Crary Bridge</li></ul>• … at NO COST to Martin County<br />
  52. 52. May 5th 2007 <br />September 30th 2007<br />October 1st 2007 <br />
  53. 53. May9th2007<br />September 1st, 2007<br />October 1st, 2007 <br />September 30th, 2007 <br />
  54. 54. Evans Crary Bridge<br />Artificial Reefs<br />Martin County<br />Nearshore - Site 1<br />Nearshore - Site 2<br />Nearshore - Site 3<br />Sirotkin Reef<br />Donaldson Reef<br />Ernst Reef<br />
  55. 55. ernst<br />
  56. 56. Martin County’s “Plan”<br />
  57. 57.                                                                                                         <br />"Who let the Reef Balls Out?"Bridget ConnerThe Walker School <br />
  58. 58.                                                                                                       <br />"I felt like I was making a difference when I helped <br />constrct a Reef Ball."Katey Ceccarelli<br />
  59. 59. The River Reefs Project is just one aspect of the Martin County Artificial Reef Plan (MCARP).<br />The MCARP is part of the State of Florida’s initiatives to restore and enhance our marine resources. <br />These initiatives are a part of the great world-wide movement to sustain and maintain the oceans of our earth and all the vital resources connected to it. <br />By becoming a participant of our River Reefs Project, you will be doing your part in aiding the preservation of our oceans, which contribute much of the living forces for sustaining our world. <br />
  60. 60.                                                                                                 <br />Reef by Darrin(Grade 5/K)<br />
  61. 61. Thank You<br />Martin County Coastal Engineering Division<br />www.martin.fl.us/GOVT/<br />
  62. 62. Types of Artificial Reefs<br />Individual Units<br />each unit provides surface areas & void spaces all by itself<br />each individual unit must be stable<br />Rubble Mound (Stacked) Units<br />spaces between units provides void spaces<br />interlocking of units promotes stability<br />
  63. 63. Ship Disposal for Artificial Reefs<br />
  64. 64. Deployment of Concrete Tetrahedrons<br />
  65. 65. Colonization of Tetrahedron Reefs<br />
  66. 66. Inlet Rock Site<br />Donaldson Reef<br />
  67. 67. Evans Crary Bridge<br />Ernst Reef<br />
  68. 68. Tetrahedron Site<br />Sirotkin Reef<br />
  69. 69. Reef Balls<br />
  70. 70. Stresses to the Lagoon<br />Population increase<br />“Improvements”<br />Freshwater discharges and runoff<br />Exotic invasive species<br />
  71. 71.
  72. 72. Pressures on Natural Reefs<br />Overfishing<br />Boats<br />Diving<br />Algal blooms<br />Sedimentation<br />
  73. 73. Reef Balls are concrete <br />bee-hive type structures<br />
  74. 74. The MCARP Mobile Reef Building Unit <br />aka "The Trailer"<br />
  75. 75. mixing <br />the ingredients<br />
  76. 76. removing the mold<br />
  77. 77. removing <br />the bladder<br />
  78. 78. Reef Balls<br />waiting to be deployed<br />
  79. 79. on the move...<br />
  80. 80. Composite Units<br />
  81. 81. Reef Ball<br />
  82. 82. Visit www.martinreefs.com<br />for more information on our Artificial Reef Program<br />

×