aggra

Raw data of fish biomass (AGGRA)

Raw data of fish biomass based on the Atlantic and Gulf Rapid Reef Assessment method (AGGRA) for the locations:

  • calabas
  • no dive reserve
  • front porch
  • 18th palms
  • bach beach
  • barkadera
  • forest
  • karpata
  • oilslick
  • reef scientifico

Please contact the DCBD admin, or STINAPA for more information.

Date
2016
Data type
Raw data
Geographic location
Bonaire

CONDITION OF CORAL REEFS OFF LESS DEVELOPED COASTLINES OF CURAÇAO (PART 1: STONY CORALS AND ALGAE)

Coral reefs at 10-20 m depth off eastern and western Curaçao, Netherlands Antilles had high abundance and high cover (25-50%) of stony corals, although the latter declined between 1998 and 2000, primarily from impacts associated with Hurricane Lenny in November 1999 and coral disease. Most corals had lost 15- 40% of their live tissues and the amount of partial mortality declined with depth. Little recent mortality was observed (0.6% in 2000). Reefs were dominated by the Montastraea annularis species complex (46% of all corals ≥20 cm in diameter), which were 40% larger than other species. Overall, colonies of the M. annularis species complex sustained somewhat greater total (recent + old) partial-colony mortality (24%) than other stony corals (19%), and had a higher prevalence of disease. Yellow-blotch disease affected 14.5% of all colonies of the M. annularis species complex in January 2000; infected corals had twice as much total partial- colony mortality (44%) as uninfected conspecifics. Shallow reef communities at 8- 12 m appear resilient to disturbance, as evidenced by low macroalgal cover, a high abundance of stony coral recruits and juveniles, and declining disease incidence and prevalence overall. However, the high incidence of yellow-blotch disease in the M. annularis species complex and the absence of recruits of these species suggests their condition may continue to decline and a shift in species dominance may be underway. 

Date
2003
Data type
Research report
Theme
Research and monitoring
Tags
Geographic location
Curacao