Douglas-Fir Forest Shift 🌲🦠🌿 — Root Rot & 100-Year Changes in Diversity & Productivity

A root rot pathogen can quietly shape the long-term story of Douglas-fir forests 🌲🦠. Over 100 years of forest development, this pathogen influences which tree species survive, compete, or decline. As infected trees weaken or die, gaps open in the canopy, allowing shade-tolerant or disease-resistant species to establish themselves 🌿🌳.

These shifts gradually change the forest community composition 🌎✨. Areas with higher pathogen presence may transition from Douglas-fir dominance to more mixed stands, including hardwoods and alternative conifers. This natural reshuffling can alter wildlife habitats, soil conditions, and ecological interactions, creating a complex mosaic of forest structures 🐿️🍃.

Productivity is also affected over the decades 📉🌱. While disease reduces timber growth in infected zones, it may simultaneously promote biodiversity and regeneration dynamics. The study highlights how root rot pathogens are not just destructive agents — they are powerful ecological drivers that subtly guide forest succession and resilience over a century 🕰️🌲💚.

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