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Which human activities can degrade ecosystems and create a need for restoration?
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ecological restoration
Wetland restoration along the Târnava Mică (Tîrnava Mică) River in Romania. A former gravel mine (left) was transformed into a functional wetland (right).
Human activities significantly degrade ecosystems, often necessitating ecological restoration to recover lost biodiversity and functionality. These activities primarily drive habitat loss through destruction, fragmentation, and degradation.1
Primary Drivers of Ecosystem Degradation
- Land Development and Conversion: Activities such as deforestation, agriculture, strip mining, and residential or commercial construction directly destroy habitats by removing native vegetation and altering landscapes.12
- Habitat Fragmentation: Infrastructure projects like roads and power-line corridors subdivide large ecosystems into isolated patches. This hinders species movement, disrupts reproduction, and increases the risk of predation or mortality.13
- Pollution: Industrial, agricultural, and urban runoff—including nitrogen fertilizers and chemical pollutants—degrade water quality and stress aquatic ecosystems, often leading to eutrophication.12
- Invasive Species: The introduction of non-native species can displace native plants and animals by outcompeting them for essential resources like food, water, and living space.1
- Climate Change: The emission of greenhouse gases from fossil-fuel combustion and land-use changes accelerates global warming, causing shifts in climate that threaten the stability of diverse ecosystems, including wetlands.45