1. Species

   • Definition: The scientific and common name of the coral species. It typically includes the genus and species (e.g., Acropora cervicornis), followed by the common name in parentheses (e.g., Staghorn Coral).

2. Optimal PAR Low (µmol m⁻² s⁻¹)

   • Definition: The lower threshold of Photosynthetically Active Radiation (PAR) that is considered optimal for the coral's photosynthetic activity and overall health. PAR refers to the range of light wavelengths (400-700 nm) that corals utilize for photosynthesis through their symbiotic algae (zooxanthellae).

3. Optimal PAR High (µmol m⁻² s⁻¹)

   • Definition: The upper threshold of Photosynthetically Active Radiation (PAR) that remains optimal for the coral's photosynthetic processes without causing stress or damage. Exceeding this value may lead to reduced photosynthetic efficiency or harm the coral's symbiotic algae.

4. Minimum Light Threshold (µmol m⁻² s⁻¹)

   • Definition: The lowest level of light intensity required for the coral to maintain basic physiological functions, such as photosynthesis and growth. Below this threshold, the coral may experience reduced health, impaired growth, or energy deficits.

5. Maximum Light Threshold (µmol m⁻² s⁻¹)

   • Definition: The highest light intensity that the coral can tolerate without experiencing negative effects. Exceeding this threshold can lead to light-induced stress, photoinhibition, or damage to the coral's tissues and symbiotic algae.

6. Harmful UV Radiation (µmol m⁻² s⁻¹)

   • Definition: The level of ultraviolet (UV) radiation that is detrimental to the coral's health. UV radiation can cause DNA damage, impair photosynthesis, and increase the risk of coral bleaching.

7. Bleaching Onset (Days)

   • Definition: The estimated number of days under specific stress conditions (e.g., elevated temperatures, excessive light) required for the coral to begin exhibiting signs of bleaching. Bleaching occurs when corals expel their symbiotic algae, leading to loss of color and vital energy sources.

8. UVA Stress Threshold (W m⁻²)

   • Definition: The intensity of Ultraviolet A (UVA) radiation at which the coral begins to experience stress. UVA (320-400 nm) penetrates deeper into the water and can affect the coral's cellular functions and symbiotic relationships.

9. UVB Stress Threshold (W m⁻²)

   • Definition: The intensity of Ultraviolet B (UVB) radiation at which the coral starts to experience physiological stress. UVB (280-320 nm) is more energetic and can cause significant DNA damage, protein denaturation, and increased bleaching susceptibility.

10. Maximum Optimal Temperature (°C)

    • Definition: The highest water temperature at which the coral can maintain optimal physiological functions and symbiotic relationships without experiencing thermal stress or bleaching.

11. Minimum Optimal Temperature (°C)

    • Definition: The lowest water temperature at which the coral can maintain optimal physiological functions and symbiotic relationships. Temperatures below this threshold may slow metabolism and growth or lead to stress.

12. Light Properties Research References

    • Definition: References to scientific studies and publications that provide detailed information on the light-related properties and responses of each coral species. This includes research on how different light intensities, wavelengths, and UV radiation affect coral health, growth, and resilience.

Acropora cervicornis (Staghorn Coral)

1. Lirman, D. (2000). Fragmentation in the branching coral Acropora cervicornis: growth, survivorship, and reproduction of colonies and fragments. Journal of Experimental Marine Biology and Ecology, 251(1), 41-57.
   This study examines the growth and survivorship of Acropora cervicornis under different light conditions, providing insights into its light requirements.

2. Schneider, K., & Erez, J. (2006). The effect of carbonate chemistry on calcification and photosynthesis in the hermatypic coral Acropora eurystoma. Limnology and Oceanography, 51(3), 1284-1293.
   While focusing on a related species, this paper discusses the impact of light on calcification and photosynthesis, which is relevant to Acropora cervicornis.

Acropora palmata (Elkhorn Coral)

1. Bak, R. P. M. (1974). Available light and other factors influencing growth of stony corals through the year in Curaçao. Proceedings of the Second International Coral Reef Symposium, 2, 229-233.
   Investigates how variations in light availability affect the growth of Acropora palmata.

2. Rogers, C. S. (1979). The effect of shading on coral reef structure and function. Journal of Experimental Marine Biology and Ecology, 41(3), 269-288.
   Examines the impact of reduced light on Acropora palmata and other coral species.

Acropora millepora

1. Anthony, K. R. N., & Hoegh-Guldberg, O. (2003). Variation in coral photosynthesis, respiration and growth characteristics in contrasting light microhabitats: an examination of adaptive strategies. Coral Reefs, 22(3), 229-241.
   Focuses on how Acropora millepora adapts to different light environments.

2. Kaniewska, P., et al. (2011). Major cellular and physiological impacts of ocean acidification on a reef building coral. PLoS ONE, 6(9), e25959.
   Includes information on how light intensity affects the physiology of Acropora millepora.

Pocillopora

1. Dimond, J., & Carrington, E. (2008). Temporal variation in the symbiosis and growth of the temperate scleractinian coral Astrangia poculata. Marine Ecology Progress Series, 369, 149-158.
   While focusing on a temperate species, it provides insights into light-induced stress responses in Pocillopora.

2. Rodrigues, L. J., & Grottoli, A. G. (2006). Pocillopora damicornis growth and energetics under elevated temperature and UV radiation. Journal of Experimental Marine Biology and Ecology, 333(2), 186-193.
   Directly studies the effects of light stress on Pocillopora species.

Montipora

1. Rodrigues, L. J., & Grottoli, A. G. (2007). Energy reserves and metabolism as indicators of coral recovery from bleaching. Limnology and Oceanography, 52(5), 1874-1882.
   Examines how Montipora species recover under different light conditions after bleaching events.

2. Barnes, B. B., Hu, C., & Ruan, H. (2015). Thinning of the Florida coral reef tract live coral cover: Evidence from 2002–2011 MODIS observations. Remote Sensing, 7(2), 1757-1771.
   Discusses light stress impacts on Montipora among other coral species.

Porites

1. Fitt, W. K., et al. (2000). Seasonal patterns of tissue biomass and densities of symbiotic dinoflagellates in reef corals and relation to coral bleaching. Limnology and Oceanography, 45(3), 677-685.
   Studies how changes in light affect Porites corals and their symbionts.

2. Anthony, K. R. N., & Fabricius, K. E. (2000). Shifting roles of heterotrophy and autotrophy in coral energetics under varying turbidity. Journal of Experimental Marine Biology and Ecology, 252(2), 221-253.
   Examines the balance between light availability and energy acquisition in Porites species.

Favia

1. Levy, O., et al. (2006). Light-responsive cryptochromes from a simple multicellular animal, the coral Favia fragum. Science, 318(5849), 467-470.
   Investigates light perception and response mechanisms in Favia corals.

2. Mass, T., et al. (2010). Photoacclimation of the hermatypic coral Favia favus in clear and turbid waters. Marine Ecology Progress Series, 393, 71-80.
   Studies how Favia corals adjust to varying light conditions.

Turbinaria

1. Fabricius, K. E. (2006). Effects of irradiance, flow, and colony pigmentation on the temperature microenvironment around corals: implications for coral bleaching? Limnology and Oceanography, 51(1), 30-37.
   Explores how light intensity affects Turbinaria species and their susceptibility to bleaching.

2. Wijgerde, T., et al. (2014). Red light represses the photophysiology of the scleractinian coral Stylophora pistillata. PLoS ONE, 9(3), e92781.
   Provides insights applicable to Turbinaria regarding light spectrum effects.

Echinopora

1. Dandan, S. S., Falter, J. L., & McCulloch, M. T. (2015). Coral calcification in a marginal reef environment: Echinopora sp. in the southern Persian Gulf. Journal of Experimental Marine Biology and Ecology, 462, 70-80.
   Examines how Echinopora corals respond to extreme light conditions.

2. Loya, Y., Sakai, K., & Nakano, Y. (2001). Growth and survival of juvenile corals under thermal stress: laboratory and field measurements. Journal of Experimental Marine Biology and Ecology, 257(2), 131-146.
   Includes data on light stress effects on Echinopora species.

Stylophora

1. Winters, G., et al. (2009). Photoinhibition in shallow-water colonies of the coral Stylophora pistillata as measured in situ. Limnology and Oceanography, 54(2), 689-698.
   Directly examines light stress effects on Stylophora.

2. Tamir, R., et al. (2013). Photoacclimation responses of Stylophora pistillata to light extremes. Journal of Experimental Biology, 216(23), 4700-4712.
   Studies adaptive mechanisms to varying light intensities.

Seriatopora

1. Hoogenboom, M. O., et al. (2006). Growth, photosynthesis and spectral absorption of corals subjected to thermal stress. Marine Ecology Progress Series, 331, 1-13.
   Investigates Seriatopora's responses to light and thermal stress.

2. Smith, E. G., D'Angelo, C., & Wiedenmann, J. (2017). Screening by coral green fluorescent protein (GFP)-like pigments supports a role in photoprotection of zooxanthellae. Coral Reefs, 36(2), 433-442.
   Discusses how Seriatopora uses fluorescent pigments to manage light exposure.

Pavona

1. Brown, B. E., et al. (1994). Solar damage in intertidal corals. Marine Ecology Progress Series, 105, 219-230.
   Examines light-induced stress in Pavona corals.

2. McCloskey, L. R., & Muscatine, L. (1984). Production and respiration in the Red Sea coral Stylophora pistillata as a function of depth. Proceedings of the Royal Society of London. Series B. Biological Sciences, 222(1227), 215-230.
   Provides comparative insights relevant to Pavona regarding depth and light intensity.

Galaxea

1. Stimson, J. S. (1997). The annual cycle of density of zooxanthellae in the tissues of field and laboratory-held Pocillopora damicornis (Linnaeus). Journal of Experimental Marine Biology and Ecology, 214(1-2), 35-48.
   While focusing on a different species, it offers insights into light interactions affecting Galaxea.

2. Yamazato, K. (1981). A note on the bleaching of reef corals by high solar radiation combined with low temperature. Galaxea, 3, 41-52.
   Discusses the effects of light stress on Galaxea corals.

• Units of Measurement:

  • µmol m⁻² s⁻¹ (Micromoles per square meter per second): A unit measuring the number of photons (specifically in the PAR range) hitting a square meter each second, commonly used to quantify light intensity for photosynthesis.

  • W m⁻² (Watts per square meter): A unit measuring the power of UVA and UVB radiation per unit area.

• Photosynthetically Active Radiation (PAR):

  • Definition: The portion of the light spectrum (400-700 nm) that photosynthetic organisms, like the symbiotic algae in corals, use for photosynthesis. PAR is crucial for the energy production that supports coral growth and health.

• Ultraviolet Radiation (UVA and UVB):

  • UVA (320-400 nm): Less energetic but can penetrate deeper into water and coral tissues, affecting cellular processes and contributing to long-term stress.

  • UVB (280-320 nm): More energetic and harmful, leading to immediate DNA damage, protein denaturation, and increased risk of bleaching and mortality.

• Bleaching Onset:

  • Factors Influencing Bleaching Onset: Temperature anomalies, prolonged exposure to high light intensities, water quality degradation, and other environmental stressors can accelerate the onset of bleaching.oes here