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Advanced AGRRA Belt Transect Survey Training: Coral Health Assessment Techniques

Join Julie Galkiewicz for an in-depth Advanced Level 3 training on the Atlantic and Gulf Rapid Reef Assessment (AGRRA) Belt Transect Survey methodology. This comprehensive session builds upon the Basic level of coral species and size assessment, introducing critical diagnostics such as disease types, mortality classifications, bleaching indicators, and tissue anomalies. Learn to identify and classify various coral diseases, including Black Band Disease and White Plague, and enhance your understanding of coral health metrics through practical surveying techniques.

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Advanced AGRRA Belt Transect Survey Training: Coral Health Assessment Techniques

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  1. Atlantic and Gulf Rapid Reef Assessment (AGRRA)Belt Transect Survey (Advanced/Level 3) Training By Julie Galkiewicz SNI - Tarpon Springs

  2. What did we survey with the Basic level? • Coral species • Sizes

  3. What we’re adding! • Disease types • % mortality and classifications • Bleaching • Clumps, Fragments, Isolates

  4. Diseases • Colored Band Diseases • Black Band Disease (BBD) • White Diseases or Syndromes • ACER and APAL only: White Band (WB) or White Patch Disease (WPD) • All other corals: White Plague (WP) • Tissue discoloration • Dark Spots Syndrome (DS) • Yellow Band (YB) • Tissue Anomalies

  5. Diseases: Colored Band Diseases • Black Band Disease (BBD)

  6. White Diseases or Syndromes For APAL and ACER only White Patch Disease (WPD) White Band (WB)

  7. White Diseases or Syndromes All the rest of the corals: White Plague (WP)

  8. Tissue Discoloration Dark Spot (DS) Yellow Band (YB)

  9. Disease? • Parrotfish bites! • Destroys skeleton structure • No tissue left behind • Other diseases don’t erode the skeleton

  10. Tissue anomalies • Tumors • Large polyps or ridges compared to the rest of the coral • Same coral tissue

  11. Mortality • Newly dead (ND) • Transitional Mortality (TM) • Old Mortality (OM) • Standing Dead (SD)

  12. New Mortality (NM) • Bright white skeleton • No algal cover • Transitional Mortality (TM) • Skeleton still intact • Some turf algae or biofilm growth

  13. Old Mortality (OM) • Algae, sponges, other corals covering the dead part • Skeleton eroding away

  14. Standing Dead (SD) • No living coral tissue on the skeleton • Skeleton structure eroded away

  15. Estimating % Mortality

  16. Percent Mortality Estimate the percent of living (colored) tissue A B C

  17. Bleaching • Bleaching (BL) • Polyps still living, skeleton not bare • Pale (P) SSID

  18. Clumps, Fragments, and Isolates (Oh my!) Clumps • A group of the same species of coral that are overlapping. Can’t see individual colony borders.

  19. Clumps, Fragments, and Isolates (Oh my!) Fragments • Detached, broken, and easily moved coral that is unlikely to remain for long in its current position on the reef

  20. Fragmentation

  21. Clumps, Fragments, and Isolates (Oh my!) Isolates • Isolated patches of coral tissue on a large boulder coral • Separated by dead skeleton • Caused by disease, bleaching killing off part of the coral

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