Lesson 71: Saving the Irrawaddy Dolphin

🌿 Ecology Lab
Briefing

Fact & Info Desk

Cambodian Geography & Nature (B2 Level)

Lesson Goal: Improve your reading comprehension by scanning ecological and scientific texts for key details.

What is an Ecological Brief?

When you read scientific texts, the information is usually separated into specific sections using headers or distinct paragraphs.

To understand these texts quickly, you don't need to read every single word immediately. First, scan the text to understand how the information is organized. Look for key terms related to habitats, threats, or solutions.

Go to the next tab to learn the B2 vocabulary, then practice your reading skills on the Ecological Brief in the Practice tab!

Description Words 🔍

ពាក្យពិពណ៌នាពីរូបរាង និងទីតាំង
Distinctive /dɪˈstɪŋk.tɪv/ លេចធ្លោ / ប្លែកពីគេ
Inhabit /ɪnˈhæb.ɪt/ រស់នៅ / អាស្រ័យនៅ

Threat Words ⚠️

ពាក្យទាក់ទងនឹងការគំរាមកំហែង
Entanglement /ɪnˈtæŋ.ɡəl.mənt/ ការជាប់ជំពាក់ / ជាប់មង
Endangered /ɪnˈdeɪn.dʒɚd/ ដែលងាយរងគ្រោះ / ជិតផុតពូជ

Solution Words 🌱

ពាក្យទាក់ទងនឹងការដោះស្រាយ
Conservationist /ˌkɑːn.sɚˈveɪ.ʃən.ɪst/ អ្នកអភិរក្ស
Sustainable /səˈsteɪ.nə.bəl/ មាននិរន្តរភាព
Ref: ECOL-042 Topic: Wildlife

Ecological Brief: The Fight to Save the Irrawaddy Dolphin

The Irrawaddy dolphin is a distinctive freshwater species known for its bulging forehead and short beak. Once widespread throughout the Mekong River, today they are inhabiting only a 190km stretch of the river in Cambodia, between Kratie town and the Laos border. They are considered a sacred species by many locals and are a vital indicator of the river's overall health.

However, the population is classified as critically endangered. The primary cause of adult dolphin mortality is entanglement in fishing gear, specifically gillnets, which cause them to drown. Other significant threats include illegal fishing practices, habitat degradation from upstream hydropower dams, and water pollution.

Urgent action is being taken to prevent extinction. Government agencies and conservationists, such as the World Wildlife Fund (WWF), are working to enforce bans on gillnets within designated protected zones. They are also collaborating with local communities to develop ecotourism as an alternative sustainable livelihood, reducing dependency on fishing in dolphin habitats.

Comprehension Assessment

1. According to the text, what is the main reason adult Irrawaddy dolphins are dying?
2. Where is the current remaining habitat of these dolphins in Cambodia?
3. What is one strategy conservationists are using to help local communities and protect dolphins simultaneously?

Real World Tasks

Apply your knowledge of Cambodian ecology!

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