World Reef Awareness Day promotes the importance of reef ecosystems around the world. The coral reef ecosystem is extremely diverse and provides habitat and natural resources for many different species including turtles, anemones, fish, and crabs. Coral reefs are also a fragile ecosystem that have been on the decline due in part to human actions such as:
- Coral mining – the act of removing coral from the ecosystem for other uses such as building materials and road fill. This has many damaging effects on the ecosystem from the methods used to the loss of both habitat and biodiversity within the ecosystem.
- Overfishing – the act of removing more fish or organisms from the population than the population can produce. This has led to a decline of populations and species within the ecosystem which forces competition among the ecosystem due to a lack of resources available.
- Coral bleaching – a result of warmer temperatures (caused by global warming) which cause algae that live in the coral to leave due to stress. Coral has a symbiotic relationship with algae where the coral depends on the algae for food; without the algae (their food source) the coral becomes white since the algae give the coral its color and becomes more susceptible to disease.
These actions have a negative effect on the health of the ecosystem itself, which in turn impacts the health of other ecosystems as well. This is because the coral reef ecosystem is interconnected with other ecosystems such as coastal ecosystems and ocean ecosystems by providing habitat for organisms or protecting these ecosystems from damage and degradation. The decline of coral reefs also impacts humans since coral reefs help the integrity of coastal regions which protect coastal areas from decline, flooding, and tidal waves by supporting foundations and decreasing the impact the wave comes to shore by acting as a wall below the surface. Coral reefs also do a lot of carbon sequestration or holding of carbon since coral takes in and stores carbon dioxide.
Development in coastal areas and pollution have also had effects on coral reef ecosystems both directly and indirectly. Directly, development has either removed parts of the coral reef or caused the degradation of the ecosystem. This has also directly affected the organisms within the ecosystem as well due to habitat loss. Indirectly, debris and pollution that contaminate the ecosystem have damaging and long-lasting effects on the ecosystem.
While all of this may seem dire, there are things being done daily to help reverse the damage that has been done. This includes replanting coral and restoring coral, setting up protected coastal and marine areas to help prevent any further loss or damage of these natural ecosystems, as well as educating the public and helping raise awareness of the importance of these ecosystems.
Sources Used:
What Is Coral Mining And What Can We Do To Fight It? – ReefCause
What is coral bleaching? (noaa.gov)
