Which scientists study the loss, protection, and restoration of biodiversity?

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Conservation biology focuses on preserving biodiversity and restoring ecosystems. This field specifically studies how species are lost, identifies ways to protect them, and develops methods to repair damaged habitats. It blends science with practical actions like creating protected areas, restoring degraded environments, and guiding policies to maintain ecosystem services such as food, clean water, and climate regulation. Because the question asks who studies loss, protection, and restoration of biodiversity, conservation biologists are the ones whose work centers on all three aspects. In contrast, ecological models are tools for understanding how ecosystems behave, nutrient cycles describe the movement of elements like nitrogen and phosphorus, and the hydrologic cycle describes the movement of water—these areas inform conservation but do not center on studying or performing biodiversity protection and restoration themselves.