How much energy does Zooxanthellae get from the sun
Zooxanthellae, a type of symbiotic algae, get their energy from photosynthesis. In general, the amount of energy they receive from the sun depends on the intensity and duration of sunlight, as well as the depth at which they are found.
Zooxanthellae are typically found in coral reefs, where they require a certain amount of light for optimal photosynthesis. They are adapted to live in shallow waters, where sunlight can penetrate to provide energy for photosynthesis. However, they can also be found at greater depths, where light levels are lower.
On average, it is estimated that zooxanthellae receive around 100-200 micromoles of photons per square meter per second (µmol/m²/s) in their natural environment. This measurement is known as Photosynthetically Active Radiation (PAR) and represents the amount of light available for photosynthesis.
The energy received from the sun allows zooxanthellae to convert carbon dioxide and water into glucose (a sugar) and oxygen through photosynthesis. This glucose serves as a source of energy for both the algae and the coral they reside in. Additionally, excess glucose is stored as starch for later use.
It is important to note that the energy acquired from the sun is just one aspect of the nutritional requirements of zooxanthellae, as they also need other nutrients like nitrogen and phosphorus, which are typically obtained from their coral hosts.