Final answer:
The most heavily managed forest region dominated by pine is found in South America. Pine invasions have occurred in different biomes, impacting local and regional biodiversity.
Step-by-step explanation:
The most heavily managed forest region dominated by pine is found in South America. Pine invasions have occurred in different biomes of South America, including tropical and subtropical forests, grasslands, savannas, shrublands, and Mediterranean forests. Pine plantations have been widely promoted across South America for forestry purposes, creating a strong industrial complex. However, these invasive pines have a negative impact on local and regional biodiversity by affecting ecosystem composition, structure, and function.