Abstract
Picture a meadow or forest full of plants. Did you know that even when it looks wild and healthy, there are many plants missing? Scientists call these “missing species” dark diversity. Our team studied more than 5,000 sites in 119 regions across the globe. Each site was about the size of a classroom. We counted the plants that actually grew there. Then we compared them with the plants that could live there. On average, only about one-quarter of the possible plants were present. The rest were gone, even in places that still look natural. Why? Human activities – like building roads, cities, and farms – make it hard for plants to survive or return. We found that the more people shape the land, the fewer plants remain from the full list of potential species. This hidden loss shows that Nature is emptier around us than it appears. That matters for protecting biodiversity.
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