Table 5 List of symbols, definition and units.

C

Carbon

C _C

Amount of carbon used by calcification (μg C cm⁻² h⁻¹)

CHAR

Percentage of heterotrophic carbon contributing to the respiration of the host (%)

C _chase

Atom percent of ¹³C in the non-enriched incubation medium (equal to 1.1%)

C _inc

Atom percent of ¹³C in the enriched incubation medium (%)

C _L

Autotrophic carbon lost (μg C cm⁻² h⁻¹ or %)

C _meas

Atom percent of ¹³C measured in the enriched samples (%)

C _nat

Natural atom percent of ¹³C in non-enriched nubbins (%)

C _pulse

Atom percent of ¹³C in the enriched incubation medium (equal to 23.5%)

C _R

Percentage of autotrophic carbon remaining in symbionts or host tissue (%)

CTF

Control temperature and fed corals

CTU

Control temperature and unfed corals

CTAR

Percentage of autotrophic carbon contributing to the respiration of the host (%)

CZAR

Percentage of autotrophic carbon contributing to the total respiration of the holobiont (%)

FSW

0.45 μm-filtered seawater

H _C

Heterotrophic carbon grazing rate (μg C cm⁻² h⁻¹)

HTF

High temperature and fed corals

HTU

High temperature and unfed corals

M _C

Mass of carbon per milligram of host tissue or symbionts (μg mg⁻¹)

M _sample

Mass of the freeze-dried sample (mg)

M _Sk

Amount of CaCO₃ produced by calcification (μg CaCO₃ cm⁻² h⁻¹)

P _C

Amount of autotrophic carbon fixed by gross photosynthesis (μg C cm⁻² h⁻¹)

P _g

Oxygen produced by gross photosynthesis (μmol O₂ cm⁻² h⁻¹)

P _n

Oxygen produced by net photosynthesis (μmol O₂ cm⁻² h⁻¹)

PQ

Photosynthetic quotient (equal to 1.1 mol O₂:mol C)

R

Oxygen consumed by respiration of holobiont (μmol O₂ cm⁻² h⁻¹)

R _C

Amount of carbon respired by holobiont (μg C cm⁻² h⁻¹)

R _H

Amount of carbon respired by coral host (μg C cm⁻² h⁻¹)

RQ

Respiratory quotient (equal to 0.8 mol C: mol O₂)

R _S

Amount of autotrophic carbon respired by symbionts (μg C cm⁻² h⁻¹)

S

Nubbin surface area (cm²)

T _S

Autotrophic carbon translocated from symbionts to their host (μg C cm⁻² h⁻¹or %)

t _chase

Incubation time of the nubbins in the non-enriched medium in the light (equal to 24 h)

t _pulse

Incubation time of the nubbins in the enriched medium (equal to 5 h)

ρ _DOC

Amount of autotrophic carbon lost in released dissolved organic carbon (μg C cm⁻² h⁻¹)

ρ _H

Amount of autotrophic carbon incorporated in the coral host (μg C cm⁻² h⁻¹)

ρ _POC

Amount of autotrophic carbon lost in released particulate organic carbon (μg C cm⁻² h⁻¹)

ρ _S

Amount of autotrophic carbon incorporated in the symbionts (μg C cm⁻² h⁻¹)