Presentation For Turtle Beach Lodge

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This is an example of an electronic presentation provided by COTERC to local ecolodge in Costa Rica.

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Presentation For Turtle Beach Lodge

  1. 1. Sea Turtles: Biology and Conservation April Stevens, BScH. PhD Candidate McMaster University
  2. 2. Seven Species • 5 spp. globally distributed around tropics • 2 spp. endemic to specific area • Kemp’s Ridley – Gulf of Mexico • Flatback – Continental shelf of Australia
  3. 3. Leatherback Adult Size and Weight: 155cm, 400kg Age to Maturity: 12-15yrs Diet: Jellyfish Conservation Status: Critically Endangered (IUCN) Pacific vs. Atlantic • Significantly smaller individuals and population • Possible extinction in Pacific
  4. 4. Green Turtle Adult Size and Weight: 105cm, 150kg Age to Maturity: 30yrs Diet: Sea grass, algae Conservation Status: Endangered (IUCN) • Herbivorous adults • Fat green from diet • Tortuguero largest rookery in Atlantic
  5. 5. Loggerhead Adult Size and Weight: 92cm, 115kg Age to Maturity: 25 - 35yrs Diet: Mollusks, crustaceans Conservation Status: Endangered (IUCN)
  6. 6. Hawksbill Adult Size and Weight: 85cm, 70kg Age to Maturity: 20-30yrs Diet: Omnivorous (Caribbean sponge specialization) Conservation Status: Critically Endangered (IUCN)
  7. 7. Leatherbacks stay pelagic Generalized lifecycle of sea turtles, (Lanyon, Limpus & Marsh, 1989).
  8. 8. Nesting Beach • Lay multiple clutches (nests) • Species dependent – Anywhere from 3-8 clutches per season – Average 2 weeks between each clutch • Female does not eat for the 6 months around and during breeding and nesting – Can have 3 clutches inside the body at one time! • Typically 2-3 yrs. between nesting seasons
  9. 9. Current Threats • Fisheries bycatch – Not just sea turtles • Habitat loss – Beach development – Feeding grounds destroyed (reefs and sea grass beds)
  10. 10. Threats Con’t • Legal and Illegal harvest of adults and eggs • Pollution – Plastic ingestion (and other debris) – Oil spills, other – chemical pollutants i.e. DDT
  11. 11. Playa Norte • Partnership b/w COTERC and GVI – Run through Caño Palma Biological Station • Monitor the nesting beach and nesting females – Patrol beach at night looking for nesting females – Assess female health and obtain biometric data (measurements of length and width) – Try to deter poaching of females and eggs
  12. 12. Research Con’t • Determine nest success from excavations • Education of locals and tourists about sea turtles and their conservation. Bringing this to an end!! Questions?
  13. 13. We’re Outta Here!!

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