1. Many poor tropical countries point out that a hectare of shrimp ponds can provide 1,000 times as much annual income as the same area in an intact mangrove forest. Debate this point with a friend or classmate. What are the arguments for and against saving mangroves?
http://ngm.nationalgeographic.com/2007/02/mangroves/warne-text
http://blog.wholefoodsmarket.com/2008/10/shrimp-and-mangroves/
http://news.nationalgeographic.com/news/2004/06/0621_040621_shrimpfarm.html
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When debating the point of saving mangroves, there are several arguments for and against it. Here are some points you can consider:
Arguments for saving mangroves:
1. Biodiversity and ecosystem services: Mangroves are incredibly biodiverse ecosystems that support a wide range of plant and animal species. They act as nurseries for numerous fish and shellfish, provide habitats for migratory birds, and protect coastal areas from erosion and storm damage. Preserving these ecosystems contributes to the overall health and balance of the environment.
2. Climate change mitigation: Mangroves have the ability to sequester vast amounts of carbon dioxide from the atmosphere, making them vital in the fight against climate change. They store more carbon per unit area than most other forest types, including rainforests. By conserving mangroves, we can help reduce greenhouse gas emissions and mitigate the impacts of climate change.
3. Sustainable livelihoods: Many coastal communities rely on mangrove forests for their livelihoods. Mangroves provide a source of food, income, and resources such as wood, fibers, and medicinal plants. They support local fisheries, tourism, and traditional practices, contributing to sustainable livelihoods for these communities.
Arguments against saving mangroves:
1. Economic benefits: As mentioned in the initial statement, some argue that converting mangrove forests into shrimp ponds can provide a much higher income for poor tropical countries. The economic value of shrimp farming and other commercial activities might seem more appealing in the short term than preserving mangroves, especially for developing nations focused on immediate economic gains.
2. Land use competition: In densely populated areas with limited available land, there may be competition for land use between agriculture, industrial development, and conservation. Some argue that utilizing mangroves for economic purposes such as aquaculture or agriculture may be more practical given the increasing global demand for food.
3. Management challenges: Mangrove conservation may require substantial investments in proper management, including enforcement of regulations, monitoring, and education. Some may argue that these resources could be better spent on other pressing issues such as poverty alleviation or healthcare.
When debating with your friend or classmate, consider these arguments while keeping in mind the long-term consequences for biodiversity, ecosystems, climate change, and sustainable livelihoods. Evaluating the trade-offs between short-term economic gains and the long-term benefits of protecting mangroves will help you structure a well-rounded discussion.