draglin33
21.06.2021 19:03:04
24. Be a wastewater crusader! Make sure that sewage from your boat, from others boats, and from land is correctly treated. The nutrients from sewage feed growing algae that can smother and kill corals.
See full version: How to prevent coral reef degradation
24. Be a wastewater crusader! Make sure that sewage from your boat, from others boats, and from land is correctly treated. The nutrients from sewage feed growing algae that can smother and kill corals.
19. Don't anchor on the reef. If you go boating near a coral reef, use mooring buoy systems when they are available. [links]
7. Support conservation organizations. Many of them have coral reef programmes, and your much-needed monetary support will make a big difference.
1. Support reef-friendly businesses. Ask what your dive shop, boating store, tour operators, hotel and other coastal businesses are doing to save the coral reefs. This is especially important in coastal areas with reefs. Let them know you are an informed consumer and care about reefs.
14. Keep it clean. You may be in the habit of picking up your own trash. You may even participate in an organized cleanup. But have you considered carrying away the trash that others have left behind? here
3. Volunteer for a reef cleanup. You don't live near a coral reef? Then do what many people do with their vacation: visit a coral reef. Spend an afternoon enjoying the beauty of one of the world's treasures while helping to preserve it for future generations.
Land trusts are responding to coral bleaching and reef degradation in various ways. Some groups are launching coral restoration projects in order to support the biodiversity and long-term resilience of these fragile and essential marine systems. In addition to employing strategic conservation planning to reduce risks and enhance resilience, some land trusts are also supporting efforts to mitigate greenhouse gas emissions to reduce the extent of future climate change. Many conservation organizations assert that conservation and restoration alone will not be enough to protect vulnerable reef systems, and advocate global policy action to limit temperature change to less than 2°C by the end of the 21rst century. [links]
Warmer water temperatures and higher ocean acidity can result in coral bleaching. When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality. As the climate changes, coral bleaching is predicted to become more frequent and severe.
Reef degradation and coral die-off are also associated with greater impacts to terrestrial systems – as USGS summarizes, recent research indicates reef systems provide substantial protection against natural hazards by reducing wave energy by an average of 97 percent. Countless fish species rely on healthy intact reef systems for survival. In addition to ecological impacts, the collapse of reef systems can have direct impacts to tourism, aquaculture, and pharmaceutical industries (reefs are a valuable source of pharmaceutical compounds) as well as reduce the overall resilience of coastal communities [links]
NOAA reports that in 2005, the U.S. lost half of its coral reefs in the Caribbean in one year due to a massive bleaching event. Comparison of satellite data from the previous 20 years confirmed that thermal stress from the 2005 event was greater than the previous 20 years combined. Additionally, it appears not all bleaching events are due to warm water. In January 2010, cold water temperatures in the Florida Keys caused a coral bleaching event that resulted in some coral death, leading researchers to believe that extreme changes in ocean temperature increases and coral stress from other impacts may increase corals’ vulnerability to bleaching.
Additionally, as carbon dioxide in the ocean increases, ocean pH decreases or becomes more acidic, a process called ocean acidification. With ocean acidification, corals cannot absorb the calcium carbonate they need to maintain their skeletons and the stony skeletons that support corals and reefs can dissolve. Already, ocean acidification has lowered the pH of the ocean. If nothing is done to reduce carbon dioxide emissions into the atmosphere, ocean acidification will continue to increase and more and more corals will be damaged or destroyed. more
The warmer air and ocean surface temperatures brought on by climate change impact corals and alter coral reef communities by prompting coral bleaching events and altering ocean chemistry. These impacts affect corals and the many organisms that use coral reefs as habitat. Reef degradation also reduces the ability of these systems to respond to change and mitigate storm surge events – a valuable ecosystem service.
New guidelines for coral reef restoration aiming to reduce the risk of flooding in tropical coastal communities have been set out in a new study that simulated the behavior of ocean waves travelling over and beyond a range of coral reef structures. Published in Frontiers in Marine Science, these guidelines hope to optimize restoration efforts not only for the benefit of the ecosystem, but also to protect the coast and people living on it.
Different types of coral restorations were also investigated – ‘green’, entailing solely outplanting corals, or ‘gray-green hybrid’ restorations, entailing emplacement of structures (such as ReefBalls) and then outplanting corals on top of them. The team then used a numerical model to simulate waves travelling over both the restored and unrestored coral reef profiles to see how far those waves ran up the coast, providing an indication of the effect of the different reef restorations on coastal flooding.
“We hope this study will motivate others to continue and expand on this research, among others by conducting field and laboratory experiments to validate our findings,” concludes Roelvink.
"Our research reveals that shallow, energetic areas such as the upper fore reef and middle reef flat, typically characterized by physically-robust coral species, should be targeted for restoration to reduce coastal flooding," says Floortje Roelvink, lead author on the paper and researcher at Deltares, a Dutch research institute. "This will benefit both coral ecosystems and human coastal populations that rely on them for tourism, fisheries, and recreation."
Different types of coral restorations were also investigated—"green", entailing solely outplanting corals, or "gray-green hybrid" restorations, entailing emplacement of structures (such as ReefBalls) and then outplanting corals on top of them. The team then used a numerical model to simulate waves traveling over both the restored and unrestored coral reef profiles to see how far those waves ran up the coast, providing an indication of the effect of the different reef restorations on coastal flooding.
The researchers established that reef restorations should not be placed too deep because of operational constraints and limit on the wave reduction efficiency. Restorations should also not be too shallow, to prevent the drying of reef restorations and reef degradation due to thermal intolerance.