Abstract
Conservation Invasive species and climate change are altering the composition of ecosystems worldwide. In a Perspective, Magurran considers the effects of these changes, which come in addition to natural changes in ecosystem composition. For example, species turnover in rivers in Trinidad and Tobago has doubled compared to that seen in historical data, and ocean warming has led to an influx of warm-adapted species in the sea south of Norway. To conserve biodiversity, it will be important to understand the patterns of turnover and invasion. Rather than merely preserve the status quo, conservation managers will increasingly need to accommodate species turnover in their planning. Science , this issue p. [448][1] [1]: /lookup/doi/10.1126/science.aad6758
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