Correct Option: B. Establishing wildlife corridors between fragmented habitats
Detailed Explanation:
Why Option B is Correct:
Establishing wildlife corridors is a highly effective strategy for promoting biodiversity in ecological management plans. Here’s why:
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Habitat Connectivity: Wildlife corridors connect fragmented habitats, allowing animals to move freely between them. This connectivity is crucial for species that require large territories or need to migrate for food, mating, or seasonal changes. By facilitating movement, corridors help maintain genetic diversity, which is essential for the health and resilience of populations.
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Reduction of Isolation Effects: Fragmented habitats can lead to isolated populations, which may suffer from inbreeding and reduced genetic diversity. Corridors help mitigate these effects by allowing different populations to interbreed, thus enhancing genetic diversity and increasing the chances of survival for species.
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Ecosystem Services: Wildlife corridors can enhance ecosystem services such as pollination, seed dispersal, and pest control. By supporting a variety of species, these corridors contribute to the overall health of ecosystems, making them more resilient to changes and disturbances.
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Mitigation of Human Impact: Corridors can help wildlife navigate around human developments, reducing the likelihood of human-wildlife conflicts and roadkill incidents. This is particularly important in areas where urbanization and agriculture have fragmented natural habitats.
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Support for Conservation Efforts: Corridors can be part of larger conservation strategies, linking protected areas and allowing for the movement of species that are threatened or endangered. This is vital for conservation efforts aimed at preserving biodiversity.
Why the Other Options are Incorrect or Weaker:
- Option A: Monoculture planting of high-yield crops
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Explanation: Monoculture refers to the agricultural practice of growing a single crop species over a wide area for many consecutive years. While this can lead to high yields, it significantly reduces biodiversity. Monocultures can deplete soil nutrients, increase vulnerability to pests and diseases, and eliminate habitats for other species. This practice is detrimental to ecosystem health and does not promote biodiversity.
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Option C: Increasing pesticide usage to control invasive species
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Explanation: While controlling invasive species is important, increasing pesticide usage can have negative consequences for biodiversity. Pesticides can harm non-target species, including beneficial insects, birds, and aquatic life. They can also disrupt food webs and lead to declines in native species. A more balanced approach, such as integrated pest management (IPM), is often more effective and less harmful to biodiversity.
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Option D: Limiting access to protected areas for all human activities
- Explanation: While protecting areas from human activities is important for conservation, completely limiting access can have negative social and economic impacts. It can lead to local communities feeling alienated from their natural resources, which may result in resistance to conservation efforts. A more effective approach is to promote sustainable practices that allow for responsible human interaction with these areas while still protecting biodiversity.
Revision Summary:
- Wildlife corridors enhance habitat connectivity, allowing species to move freely and interbreed, which promotes genetic diversity.
- Fragmentation leads to isolated populations, increasing the risk of inbreeding and reducing overall biodiversity.
- Monoculture practices and increased pesticide use are detrimental to biodiversity and ecosystem health.
- Sustainable human interaction with protected areas is crucial for effective conservation and community support.