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Published byJanae Graydon Modified over 9 years ago
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Atlantic and Gulf Rapid Reef Assessment (AGRRA) Belt Transect Survey (Advanced/Level 3) Training By Julie Galkiewicz SNI - Tarpon Springs
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What did we survey with the Basic level? Coral species Sizes
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What we’re adding! Disease types % mortality and classifications Bleaching Clumps, Fragments, Isolates
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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
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Diseases: Colored Band Diseases Black Band Disease (BBD)
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White Diseases or Syndromes For APAL and ACER only White Band (WB) White Patch Disease (WPD)
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White Diseases or Syndromes All the rest of the corals: White Plague (WP)
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Tissue Discoloration Dark Spot (DS)Yellow Band (YB)
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Disease? Parrotfish bites! – Destroys skeleton structure – No tissue left behind – Other diseases don’t erode the skeleton
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Tissue anomalies Tumors – Large polyps or ridges compared to the rest of the coral – Same coral tissue
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Mortality Newly dead (ND) Transitional Mortality (TM) Old Mortality (OM) Standing Dead (SD)
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New Mortality (NM) – Bright white skeleton – No algal cover Transitional Mortality (TM) – Skeleton still intact – Some turf algae or biofilm growth
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Old Mortality (OM) – Algae, sponges, other corals covering the dead part – Skeleton eroding away
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Standing Dead (SD) – No living coral tissue on the skeleton – Skeleton structure eroded away
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Estimating % Mortality
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Percent Mortality Estimate the percent of living (colored) tissue AB C
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Bleaching Bleaching (BL) – Polyps still living, skeleton not bare Pale (P) SSID
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Clumps, Fragments, and Isolates Clumps A group of the same species of coral that are overlapping. Can’t see individual colony borders. (Oh my!)
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Clumps, Fragments, and Isolates Fragments Detached, broken, and easily moved coral that is unlikely to remain for long in its current position on the reef
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Fragmentation
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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 (Oh my!) Clumps, Fragments, and Isolates
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