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Roving Diver Method

Roving Diver Method. Reef Environmental Education Foundation (REEF) www.reef.org Method used throughout the world Estimate abundance of all known fish species: Single (1); Few (2-10), Many (11-100), and Abundant (>100). Record total time spent on survey Biodiversity. Pros

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Roving Diver Method

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  1. Roving Diver Method • Reef Environmental Education Foundation (REEF) www.reef.org • Method used throughout the world • Estimate abundance of all known fish species: • Single (1); Few (2-10), Many (11-100), and Abundant (>100). • Record total time spent on survey • Biodiversity

  2. Pros Good estimate of diversity Looks at ALL fish species present Don’t need a lot of equipment Cons Doesn’t estimate sizes Size = Age Juvenile, Initial, Terminal Could over-sample small reefs Re-counting fish Why use REEF?

  3. Before you get in the water… • Record: • Your name • Date • Site name, Number (first or second site visited?) • Long & Lat • Reef type - Patch/Sponge

  4. In the Water • Record depth • Record start time

  5. Record End Time!!

  6. Small or Large?

  7. Color?

  8. Location?

  9. Fig. 8.12 Locomotion

  10. Body shapes fusiform eel-like Laterally compressed ‘’ “ “ depressed “blobby”

  11. Mouth size and placement Superior Terminal Inferior Large Small

  12. Fish tails • a) Truncate b) Rounded e) Forked • g) continuous

  13. Fins • Number • Placement • Special modifications

  14. Size • Color • Location • Mouth • Body Shape • Tail • Fin Number • Placement • Special modifications

  15. Size • Color • Location • Mouth • Body Shape • Tail • Fin Number • Placement • Special modifications Lunate

  16. Size • Color • Location • Mouth • Body Shape • Tail • Fin Number • Placement • Special modifications

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