What is a potential consequence of habitat fragmentation on species diversity?

What is a potential consequence of habitat fragmentation on species diversity?

• A. Increased interbreeding among fragmented populations
• B. Decreased migration and genetic diversity
• C. Enhanced survival rates of all species
• D. Uniform ecosystem characteristics

Answer: (B)

Habitat fragmentation leads to the division of larger ecosystems into smaller, isolated patches. This isolation can significantly decrease migration opportunities for species, limiting their ability to move between patches. As a result, gene flow is reduced, which leads to inbreeding within these smaller populations. This inbreeding can decrease genetic diversity, making populations more vulnerable to environmental changes and diseases. Additionally, the smaller size of fragmented habitats often cannot support as many individuals or species compared to larger, contiguous habitats. This can lead to a decline in overall species richness and diversity. Therefore, the potential consequence of decreased migration and genetic diversity due to habitat fragmentation is a critical factor affecting species survival and ecosystem health.

Habitat fragmentation leads to the division of larger ecosystems into smaller, isolated patches. This isolation can significantly decrease migration opportunities for species, limiting their ability to move between patches. As a result, gene flow is reduced, which leads to inbreeding within these smaller populations. This inbreeding can decrease genetic diversity, making populations more vulnerable to environmental changes and diseases.

Additionally, the smaller size of fragmented habitats often cannot support as many individuals or species compared to larger, contiguous habitats. This can lead to a decline in overall species richness and diversity. Therefore, the potential consequence of decreased migration and genetic diversity due to habitat fragmentation is a critical factor affecting species survival and ecosystem health.