How is biodiversity important for ecosystem functioning?
Biodiversity is essential for ecosystem functioning because every organism, besides extracting its needs, contributes something useful to other organisms. Species perform critical functions such as capturing and storing energy, producing and decomposing organic materials, cycling water and nutrients, fixing atmospheric gases, and regulating the climate.
The more diverse an ecosystem, the better are the chances for species to survive through adversities and attacks, making it more productive. An ecosystem with high biodiversity has a greater chance of adapting to environmental change. Hence, loss of species would decrease the ability of the system to maintain itself. In other words, the more the variety of species in an ecosystem, the more stable the ecosystem is likely to be.
Explanation
This answer draws from the textbook's explanation of ecological roles of biodiversity. Key points include: (1) species perform essential ecosystem functions like energy capture, nutrient cycling, and climate regulation; (2) diverse ecosystems are more productive and resilient to adversities; (3) high biodiversity enables better adaptation to environmental changes; (4) species loss reduces the ecosystem's self-maintenance ability. The relationship between diversity and stability is emphasized.
Solution Steps
Step 1: Identify the functional contributions of species to ecosystems (energy capture, decomposition, nutrient cycling, climate regulation)
Step 2: Explain the relationship between biodiversity and ecosystem resilience/productivity
Step 3: Connect biodiversity to ecosystem stability and adaptation to change