Fig 1.
A) Acropora cervicornis; B) Colpophyllia natans; C) Orbicella annularis; D) Porites astreoides; E) Porites furcata; F) Pseudodiploria strigosa; G) Siderastrea siderea.
Table 1.
Summary of symbiont clades found in the literature for the seven coral species sampled during the present study.
Table 2.
Concentration and average percent of individual pigments per coral colony sampled.
Concentrations are expressed as μg cm-2 ±1 SD and n = 4–7, depending on the species. Absorption peaks may vary from those found in the literature as these depend on the extraction solvent and HPLC setup. Pigments are listed in alphabetical order. Pigments common to all 7 coral species studied are tagged with an asterisk (*).
Fig 2.
Pigment contents among the seven coral species studied.
Variability in concentration of pigment groups among species. Coral species abbreviations: A cerv—Acropora cervicornis; C nat—Colpophyllia natans; O ann—Orbicella annularis; P astr—Porites astreoides; P furc—Porites furcata; P stri—Pseudodiploria strigosa; S side—Siderastrea siderea. Error bars indicate ±1SD.
Fig 3.
Concentration of symbiont cells per coral tissue area per species.
Coral species abbreviations: A cerv—Acropora cervicornis; C nat—Colpophyllia natans; O ann—Orbicella annularis; P astr—Porites astreoides; P furc—Porites furcata; P stri—Pseudodiploria strigosa; S side—Siderastrea siderea. Error bars indicate ±1SD.
Fig 4.
Multivariate statistical analysis of coral pigments.
A) PCA and B) HCA showing the grouping of the seven coral species based on the concentration of the main photosynthetic pigments (chlorophylls, carotenes and xanthophylls). The most common symbiont clade found in each coral species (based on published literature) is shown next to the coral species name.
Fig 5.
Remote sensing reflectance for all seven species.
The blue line represents the average Rrs with ±1SD shown as the black shadow. n = 5 for each species.
Fig 6.
Relationship between the area under the reflectance curve and total symbiont pigment concentration.
The x-axis represents the integration of the reflectance curve from 400–700 nm. The lower right graph shows the pooled data from all seven species.
Fig 7.
Relationship between the area under the reflectance curve and total pigment concentration (symbiont + other contributors).
The x-axis represents the integration of the reflectance curve from 400–700 nm. The lower right graph shows the pooled data from all seven species.