Biodiversity and Ecosystem Stability in Succession

The video tutorial discusses the importance of biodiversity for ecosystem stability, reviewing ecological succession from pioneer to climax species. It highlights how habitat diversity enhances species and genetic diversity, using examples like rainforests and coral reefs. The tutorial explains how complex ecosystems with diverse food chains are more stable and resilient. It also addresses human impacts, such as logging and urbanization, which disrupt natural processes and reduce diversity.

What is the primary role of biodiversity in ecosystems?

• To promote human activities

• To increase the number of species

• To ensure ecosystem stability

• To reduce genetic diversity

Which species are known to colonize an area first during succession?

• K-selected species

• R-selected species

• Endangered species

• Climax species

How does habitat diversity affect species diversity?

• It decreases species diversity

• It has no effect on species diversity

• It increases species diversity

• It only affects genetic diversity

What is niche partitioning?

• The division of resources among species to reduce competition

• The elimination of species to reduce diversity

• The merging of habitats to increase competition

• The creation of new species through genetic mutation

Why are complex ecosystems more stable?

• They have fewer species

• They have more pathways for energy and matter

• They rely on a single food chain

• They are unaffected by human activities

What is the impact of human activities like logging and grazing on succession?

• They increase biodiversity

• They have no impact on succession

• They prevent natural successional processes

• They enhance natural successional processes

How do highways and urban areas affect habitat diversity?

• They increase habitat diversity

• They have no effect on habitat diversity

• They fragment and reduce habitat diversity

• They create new habitats

What happens to isolated populations due to habitat fragmentation?

• They thrive and increase in number

• They become immune to diseases

• They become more diverse

• They may struggle to sustain themselves

What is a common consequence of converting forests into monoculture farms?

• Reduced genetic diversity

• Higher species diversity

• Increased ecosystem stability

• Improved natural succession

What is the overall effect of human simplification of ecosystems?

• Enhanced natural processes

• Decreased stability and diversity

• Increased resilience to disturbances

• Improved genetic diversity