Why is tree diversity important in forest ecosystems?

Tree diversity is important in forest ecosystems because it plays a crucial role in enhancing the resilience of the ecosystem to various stressors such as pests, diseases, and environmental changes. A diverse array of tree species creates a more complex and stable ecosystem, which can better withstand challenges like climate fluctuations or outbreaks of disease. This diversity can lead to a variety of interactions among species, which helps to sustain ecosystem functions and services.

When different tree species are present, they may have varying tolerances to pests and diseases, meaning that if one species is affected, others may not be, thus maintaining overall forest health. Additionally, diverse forests can provide better habitat and food sources for wildlife, further stabilizing the ecosystem. This ecological balance allows forests to recover more effectively from disturbances and continue to thrive, ultimately supporting biodiversity and the various services forests provide to humans and wildlife alike.

The other options either oversimplify the functions of tree diversity or present inaccuracies regarding its impact on forest ecosystems.