Correct Option: B. Establishment of wildlife corridors
Detailed Explanation:
Why Option B is Correct:
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Definition of Wildlife Corridors:
Wildlife corridors are strips of natural habitat that connect separate populations of wildlife. They allow animals to move between different areas, which is crucial for their survival, especially in fragmented habitats.
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Importance of Connectivity:
- Genetic Diversity: Wildlife corridors help maintain genetic diversity by allowing animals to interbreed. This is essential for the health of populations, as it reduces the risks associated with inbreeding, such as genetic disorders and reduced adaptability to environmental changes.
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Access to Resources: Corridors provide access to food, water, and breeding sites that might be separated by human development or other barriers. This is particularly important for species that require large territories or have specific habitat needs.
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Mitigation of Habitat Fragmentation:
- Habitat fragmentation occurs when large habitats are broken into smaller, isolated patches, often due to human activities like urban development or agriculture. This can lead to population declines and even extinction.
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Wildlife corridors counteract this by linking these isolated patches, allowing species to migrate, find mates, and access resources, thus enhancing their chances of survival.
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Ecosystem Resilience:
- By maintaining biodiversity through corridors, ecosystems become more resilient to changes such as climate change, disease outbreaks, and invasive species. Diverse ecosystems can better withstand and recover from disturbances.
Why the Other Options are Incorrect or Weaker:
- Option A: Monoculture farming practices
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Explanation: Monoculture involves growing a single crop over a large area. This practice reduces biodiversity because it eliminates a variety of plant and animal species that would otherwise thrive in a more diverse ecosystem. Monocultures are more susceptible to pests and diseases, which can lead to increased pesticide use and further harm to the environment.
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Option C: Increased use of synthetic fertilizers
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Explanation: While synthetic fertilizers can enhance crop yields, their excessive use can lead to nutrient runoff into waterways, causing eutrophication and harming aquatic ecosystems. This practice can degrade soil health and reduce biodiversity in both agricultural and natural ecosystems. It does not contribute positively to maintaining biodiversity.
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Option D: Urban expansion into natural habitats
- Explanation: Urban expansion typically leads to habitat destruction and fragmentation, which directly threatens biodiversity. As natural habitats are converted into urban areas, many species lose their homes, leading to population declines and extinctions. This option is counterproductive to biodiversity conservation.
Summary of Key Points:
- Wildlife corridors enhance connectivity between habitats, promoting genetic diversity and resource access.
- They mitigate the effects of habitat fragmentation, allowing species to thrive and adapt.
- Monoculture farming, synthetic fertilizers, and urban expansion harm biodiversity and ecosystem health.
- Maintaining biodiversity is crucial for ecosystem resilience and the overall health of the environment.
By focusing on strategies like the establishment of wildlife corridors, ecological management plans can effectively support and maintain biodiversity.