earth science

Southeast Asian coral reefs

Southeast Asian coral reefs is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Southeast Asian coral reefs rather than just read about it. In short: Southeast Asian coral reefs have the highest levels of biodiversity for the world's marine ecosystems. They serve many functions, such as forming the livelihood for subsistence fishermen and even function as jewelry and construction materials.

Key takeaways

Southeast Asian coral reefs belongs to earth science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Southeast Asian coral reefs to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Southeast Asian coral reefs from memory before moving on to harder problems.

Reference excerpt

Southeast Asian coral reefs have the highest levels of biodiversity for the world's marine ecosystems. They serve many functions, such as forming the livelihood for subsistence fishermen and even function as jewelry and construction materials. Corals inhabit coastal waters off of every continent except Antarctica, with an abundance of reefs residing along Southeast Asian coastline in several countries including Indonesia, the Philippines, and Thailand. Coral reefs are developed by the carbonate-based skeletons of a variety of animals and algae. Slowly and over time, the reefs build up to the surface in oceans. Coral reefs are found in shallow, warm salt water. The sunlight filters through clear water and allows microscopic organisms to live and reproduce. Coral reefs are actually composed of tiny, fragile animals known as coral polyps. Coral reefs are significantly important because of the biodiversity. Although the number of fish are decreasing, the remaining coral reefs contain more unique sea creatures. The variety of species living on a coral reef is greater than anywhere else in the world. An estimation of 70-90% of fish caught are dependent on coral reefs in Southeast Asia and reefs support over 25% of all known marine species. However, despite their importance, Southeast Asian coral reefs are under severe threat from various factors, including overfishing, sedimentation, pollution, bleaching, ocean acidification, and human impacts. Bleaching events, triggered by rising sea temperatures, cause corals to expel the algae living in their tissues, leading to their whitening and eventual death. Ocean acidification, resulting from increased carbon dioxide absorption, poses another threat, weakening coral skeletons and hindering their growth. Human activities, such as coastal development and tourism, further exacerbate the degradation of coral reefs, disrupting fragile ecosystems and causing irreparable damage. Therefore, urgent conservation efforts are necessary to safeguard the future of Southeast Asian coral reefs and the countless marine species that depend on them.

Indonesia

Indonesia has 2,915,000 square kilometers of marine area. The reef area is 51,020 square kilometers. Of that amount, 82% of it is at risk. Indonesia holds 17% of the world's total coral reef areas. Blast fishing, which has been illegal since 1985 still goes on today, along with cyanide fishing (1995). Another factor that is hurting the coral reefs in Indonesia is the amount of coral that they export. They are the world's largest exporter of corals, exporting about 500 tons of coral per year. COREMAP is helping Indonesia with their combat against destruction of corals by working in 9 of the 32 provinces. They want to:

Heighten law enforcement to protect coral reefs; Establish coral reef monitoring and information systems, in order to conduct research on the status of coral reefs and more effectively disseminate that information to stakeholder groups; Develop community-based management systems and increase public participation in coral reef resource management; Increase institutional capacity and strengthen inter-institutional coordination in planning and implementing policy that affects coral reef management, and; Enhance public knowledge of the importance of coral reef and motivate people to actively participate in the management and sustainable use of coral reefs. [1]

Philippines The Philippines, with more than 7,000 islands and warm ocean waters, surround about 26,000 square kilometers of coral reef. These coral reefs have recently brought the attention of beneficial economic uses to the Philippines government. Benefits of Coral Reefs in Philippines

Coral reefs break the waves from the chance of eroding the coastline of the islands; [2] Protection of Communities: "the reefs act as buffer zones" meaning they decrease the power of typhoons and hurricanes as they approach the Philippine Islands; [3] Economic Benefits: Fishing off the coral reefs, profits from tourism, for example, Diving tours and snorkeling areas on the shallow reefs. These economic benefits create many new jobs and profitable opportunities to the country. [4]

Thailand Thailand's coastline and 300 small islands are home to 153 square kilometers of coral. Large bleaching events in 1998 and 2010 resulted in the massive loss of corals in the Gulf of Thailand, but some corals showed resilience to the events and displayed a lower mortality. Bleaching events such as these are just one of many threats that face corals in Thailand. Expansion of coastal tourism in Thailand has resulted in both a rise of coral damage and increased economic incentive to preserve and rebuild coral reefs. Tourist activities, such as diving, have become so popular in locations like the Similan Islands and Phi Phi Islands that they threaten to overwhelm and destroy protected marine areas unless new measures are taken to limit visitors and revitalize coral conservation efforts. Recognition of both the economic and ecological value of Thailand's coral reefs and their rapid degradation due to tourism has led to consideration of new ways to protect reefs. For instance, Thailand has attempted to limit the number of tourists that can visit certain islands in a year or has implemented fees that would go towards counteracting the environmental damage on corals caused by tourism. Efforts in Thailand to rebuild reefs is part of a larger economic movement that attempts to preserve natural beauty in order to continue a lucrative tourism industry, a significant source of revenue for Thai islands. Coral restoration efforts, like the New Heaven Reef Conservation Program on the Koh Tao in the Gulf of Thailand, often incorporate the local community creating positive social change as well as ecological change. While these efforts seek to address some local concerns, technical limitations are a barrier that prevent further coral restoration, and the continuation of worldwide trends like ocean warming and acidification will have further negative impacts on Thailand's coral reefs.

State

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Southeast Asian coral reefs

Start with the simplest possible case. Write down what Southeast Asian coral reefs claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Southeast Asian coral reefs before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Southeast Asian coral reefs ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Southeast Asian coral reefs

In research: Southeast Asian coral reefs appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Southeast Asian coral reefs in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Southeast Asian coral reefs is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cnidarians of the Indian Ocean, Cnidarians of the Pacific Ocean, Coral reefs, so understanding it makes those chapters shorter.
In everyday life: Look for Southeast Asian coral reefs outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Southeast Asian coral reefs in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Southeast Asian coral reefs means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Southeast Asian coral reefs out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Southeast Asian coral reefs in simple terms?

Why does Southeast Asian coral reefs matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Southeast Asian coral reefs?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Southeast Asian coral reefs.