Measuring progress toward global marine conservation targets

摘要: Marine species and their habitats are facing widespread overexploitation degradation, respectively. In response to urgent calls for protection, the international community agreed establish representative networks of marine protected areas by 2012 that would conserve protect 10–30% specific habitats. To achieve these goals will require reliable estimates total area occupied each habitat. We evaluated this assumption coral reefs generating reef from high-spatial-resolution, remotely sensed imagery (30-m resolution Landsat data), comparing with existing published data (usually >1-km resolution). Discrepancies between previous our values ranged +1316% −64%. This uncertainty is incompatible realistic achievement conservation targets. conclude currently available global extent most coastal based on too poorly resolved be useful in evalua...