Project
Photo: Carlos AguileraProtecting the rich marine life of Cabo Pulmo Reef
Cabo Pulmo Reef, a 20,000-year-old ecological treasure in Baja California Sur, Mexico, hosts many of the 800 marine species in the Sea of Cortez.
Overfishing almost killed it in the 1980s. But the Mexican government intervened in 1995 to declare it a national park. Since then, the reef has grown, and the surrounding ecosystem has prospered.
Developers repeatedly try to build enormous tourist resorts at Cabo Pulmo. The proposed resorts typically include tens of thousands of hotel rooms, golf courses, an airport, sports clubs, and more—and require new housing development for thousands of employees.
Coral reefs like Cabo Pulmo are extremely vulnerable to the impacts of such poorly planned development. Sewage and wastewater runoff cause a surge in the growth of algae that blocks sunlight, causing the reef to bleach and die.
Fertilizers, herbicides, and pesticides from golf courses contaminate ocean currents and upset the delicate ecological balance of the area. Boating, fishing, and diving stress and break reefs, too.
In an area where water is scarce, tourism infrastructure projects could overexploit aquifers that are already suffering the impacts of climate change.
AIDA's work has been instrumental in ensuring the survival and health of Cabo Pulmo's ecosystems. We continue monitoring the situation and working with national partners to make legal protections for the reef stronger and permanent.
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Coral Reefs and the Unintended Impacts of Tourism
By Camila Cossio, former AIDA intern During my internship in AIDA’s San Jose office, I met up one day with a friend from the States for lunch. She told me about her trip visiting the beaches of Costa Rica. Everything she described sounded beautiful: the clear, blue water; hermit crabs that left their shells to eat breakfast in the early morning hours; sweet fruits that fell down onto the smooth sand; and the cool, green trees that provided shade from the hot Costa Rican sun. But her mood changed suddenly, from bliss to concern, when she explained how her co-worker swam too close to a coral reef one afternoon and badly cut his thigh. She was concerned with how unprepared their tour guide was to handle the situation, and how irresponsible it seemed that tourists were allowed – with no diving experience – to swim that close to the reefs. Leaving aside the physical dangers to humans, accidents like his, though they may seem inconsequential, have a severe impact on sensitive marine ecosystems like coral reefs. Coral reefs are a unique and complex ecosystem, vital to the health of oceans. Yet 93 percent of the reefs in Costa Rica are in danger, and tourism is a significant factor in their degradation. Tourism’s threats to corals When tourists accidently touch, pollute, or break parts of the reef, corals experience stress. The coral organisms try to naturally fight off pollutants, but this process often leads to coral bleaching – when corals lose their bright colors and become completely white. Once corals are bleached, they can no longer contribute to the biodiversity of the reef community, which depends upon symbiotic interactions between fish, invertebrates, and their habitats. Additionally, since the disruption of one ocean ecosystem gravely impacts others, sea grass and mangrove communities – shallow-water plant species vital to health of the marine ecosystem – are also severely threatened by coral stress. Another significant problem facing coral reefs is sedimentation. When solid residues are deposited into the depths of water bodies, they pollute marine ecosystems and block light needed for photosynthesis. When light is blocked, immobile coral reefs bleach and die. In Costa Rica, sources of sedimentation include dredging, logging, agriculture and coastal development driven by the tourism sector. A Reef Under Siltation Stress: A Decade of Degradation, a study by Costa Rican biologist Jorge Cortés, documents the negative impacts of tourism on coral reefs in the Cauhita region of Costa Rica. Another case study on the reefs of Bahía Culebra found that coastal development related to the tourism sector was essentially unregulated. Because of this, coral reefs in the Pacific continue to suffer. Sedimentation will continue to destroy reefs if better management principles are not enacted. In 1994 in Bahía Culebra, for example, a reef was burned due to sediments leftover from construction of a tourist center. Eighty percent of the reef was completely destroyed. Scientific literature predicts that 50 percent of all coral reefs in Latin America are at risk of degradation in the next five to 10 years. Studies show that, globally, 30 percent of reefs are already seriously damaged and 70 percent of all coral reefs are expected to disappear by 2030 if corrective measures are not taken to stop the negative anthropogenic impacts on coral reef communities. Building a future for coral reefs Sustainable tourism is a great concept on paper, but hard to enforce in reality. Construction of coastal properties requires waters to be dredged. It creates pollutant runoff from roads and parking lots and airports. Sewage is dumped into the ocean, and more intensive agriculture to support all the people increases sedimentation. Although it’s difficult for an individual to stop massive projects like these, it’s easy to take small but powerful steps: not picking up wildlife for souvenirs (shells, coral rubble, plants); being conscious of what you bring with you – reusable water bottles instead of plastic bottles, a backpack for your trash in case there isn’t an area nearby to dispose of waste properly; taking the bus instead of a car; and – if possible – doing research on the hotels or hostels in which you stay. Many coastal hotels dump their graywater – wastewater from laundry, cooking, and non-toilet related household processes – into the ocean, contributing to sedimentation and contaminating coral reef ecosystems. It’s important to be aware that many land-based activities may directly harm the marine eco-system. Being an environmentally friendly tourist is not about being perfect, but individual actions, though they may seem small, really can have a big impact. AIDA provides much-needed recommendations for effective laws and practices to preserve and protect reefs. Check out our new "Best Practices" guide
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How can we save coral reefs?
By Haydée Rodríguez When I tell people I live in Costa Rica, they imagine my home on the beach, facing the ocean, waves rolling in from the endless horizon. In reality, I live in a city like any other, one hour from the Pacific coast and three from the Caribbean. Although my life hasn’t exactly been a tropical vision of paradise, I’ve been in love with the ocean since I was a girl. That love has only deepened the more I came to understand the mysteries of the sea, the services it provides and the marvelous creatures that call it home. Of all the species that live in the sea, corals are among my favorites. Thanks to my career at AIDA, I have been able to both learn a lot about these tiny animals, and work to identify effective ways to protect them. Many people don’t know about the incredible connection we have with corals. It’s a connection that exists even for those of us who don’t have the privilege of living by the sea. What are corals and what do they do for us? Although at first glance they look like large rocks, corals are actually living organisms with an exoskeleton. They have a mutualistic relationship with photosynthetic algae called zooxanthellae, which are responsible for their brilliant coloring. The algae use sunlight to produce food and some of the nutrients that the corals need to survive. In exchange, the corals provide the algae with a protected environment. A group of corals forms a reef, a highly biodiverse ecosystem, widely known as the jungle of the sea. Coral reefs provide many benefits to humanity: Reefs are spawning grounds for many varieties of fish—the fish you eat are linked, in one way or another, with a coral reef. Reefs are natural shock absorbers that protect coastal communities from storms and hurricanes. Reefs are tourist destinations that generate important national income: one square kilometer of coral reef provides services valued at up to $600,000 a year, according to the United Nations. The bad news is that these benefits could be lost if we don’t act now to preserve coral reefs. It’s estimated that 60 percent of the world’s coral reefs could disappear by 2030. That would mean that our children may enjoy them for only a brief time, and our grandchildren may know them only from photographs in their science and history books. What are the threats and how can we help fight them? Unsustainable fishing methods, such as trawling, which destroys any coral in its path. Before eating or buying seafood, it’s worth asking how it was fished. Becoming responsible consumers is our right and our obligation. We must demand in restaurants and grocery stores products that have been taken from the sea without harming corals or other species of importance. Inadequate tourism practices harm coral reefs. When exploring the wondrous corals reefs, snorkelers and divers must avoid touching or stepping on them at all costs. We must remember that corals are living creatures, which our weight and the equipment we carry into the sea can harm. When we buy souvenirs like necklaces and crafts, we should reject products that use or incorporate corals. We do not need corals to decorate our homes or bodies, but the ocean needs them to maintain its equilibrium. A recent study found that, when they come into contact with the ocean, sunscreens that contain oxybenzone (a chemical compound) could, even in low concentrations, damage the DNA of corals, deforming them and eventually causing death. We must avoid using this type of product, and instead use safe sunscreens and clothing to protect us from the sun. Here is a list of sunscreens that are safe for corals. The fertilizers used on crops leech into rivers and eventually reach the ocean, severely harming corals by increasing the production of algae, which in large quantities block the sun and prevent corals from receiving nutrients. We must opt for fruits and vegetables grown organically and demand responsible agriculture. Improving legal protection of coral reefs Another important way of saving coral reefs is by seeking change in our countries. We must urge our governments to improve the laws protecting these sensitive creatures. At AIDA, we have recently published A Guide to International Regulatory Best Practices for Coral Reef Protection. The document contains ideas to strengthen laws and promote the conservation of coral reefs around the world. I invite you to share the guide with decision-makers in your country. Or if you prefer, send me ([email protected]) the contact information of people who may be interested in implementing the recommendations contained within, and I will send them the guide directly. Corals play a more important role in our lives than many of us understand, and their future is in our hands. We must save coral reefs to ensure that our children and our grandchildren can enjoy the many benefits of these wondrous creatures.
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International Regulatory Best Practices for Coral Reef Protection
This Best Practices Guide provides examples of effective regulatory tools for protecting coral reefs. These tools can be adapted to the circumstances of various jurisdictions where reefs are at risk. It is not an exhaustive list of best practices, but rather a compilation of approaches that countries around the world have implemented to regulate human activities that harm coral reefs. This Guide presents basic legal and regulatory tools and practices that can be modified, improved, strengthened, and applied according to the unique circumstances and objectives of each country seeking to implement stronger protections for its coral reef resources. Download the guide Download the summary report
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