Abiotic factors of a coral reef include sunlight, oxygen, carbon dioxide and water. Abiotic factors are those factors near the coral reef that are not alive but can influence its health and life.
Despite the fact that abiotic factors are nonbiological, they can still have a great effect on the well-being of a coral reef. Conditions that change due to global warming, for example, can affect the stability of the entire ecosystem, wreaking havoc on the coral reef and surrounding areas. Too much change in the abiotic factors can affect how much sunlight reaches the reef, which affects how much food a coral has available.