The correct option for promoting biodiversity in an ecological management plan is
B. Establishing protected areas and wildlife corridors.
Detailed Explanation
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Understanding Biodiversity: Biodiversity refers to the variety of life in a particular habitat or ecosystem. It includes the diversity of species, genetic diversity within species, and the variety of ecosystems. High biodiversity is crucial for ecosystem resilience, providing services such as pollination, nutrient cycling, and climate regulation.
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Why Option B is Correct:
- Protected Areas: Establishing protected areas, such as national parks and wildlife reserves, helps conserve habitats and the species that live within them. These areas are often free from human exploitation, allowing ecosystems to function naturally and species to thrive.
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Wildlife Corridors: Wildlife corridors are strips of natural habitat that connect isolated populations. They allow animals to migrate, find mates, and access resources, which is essential for maintaining genetic diversity and reducing the risk of extinction. Corridors help mitigate the effects of habitat fragmentation, which is a significant threat to biodiversity.
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Why Other Options are Incorrect:
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A. Monoculture farming practices: This approach involves growing a single crop over a large area. While it can be economically efficient, it severely reduces biodiversity. Monocultures can lead to soil degradation, increased vulnerability to pests and diseases, and loss of habitat for various species. This practice is detrimental to the ecosystem as it eliminates the variety of plants and animals that contribute to ecological balance.
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C. Increasing urban development in natural habitats: Urban development often leads to habitat destruction, fragmentation, and pollution. Expanding cities encroach on natural habitats, displacing wildlife and reducing biodiversity. Urban areas typically have fewer natural resources and can create barriers for species movement, further threatening their survival.
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D. Using chemical pesticides extensively: While pesticides can control pests in agriculture, their extensive use can have harmful effects on non-target species, including beneficial insects, birds, and aquatic life. Pesticides can disrupt food webs and lead to declines in populations of various species, ultimately harming biodiversity. Additionally, the development of pesticide-resistant pests can lead to a cycle of increased chemical use, further exacerbating the problem.
Summary of Key Points
- Biodiversity is essential for ecosystem health and resilience.
- Protected areas and wildlife corridors are effective strategies for conserving biodiversity by safeguarding habitats and facilitating species movement.
- Monoculture farming, urban development, and extensive pesticide use are detrimental to biodiversity and should be avoided in ecological management plans.
- Promoting biodiversity requires a holistic approach that prioritizes habitat conservation and sustainable practices.
By focusing on strategies that protect and connect natural habitats, we can foster a more diverse and resilient ecological landscape.