Half a century of global decline in oceanic sharks and rays

@article{Pacoureau2021HalfAC,
  title={Half a century of global decline in oceanic sharks and rays},
  author={Nathan Pacoureau and Cassandra L. Rigby and Peter M. Kyne and Richard B. Sherley and Henning Winker and John K. Carlson and Sonja V. Fordham and Rodrigo Barreto and Daniel Fernando and Malcolm P Francis and Rima W. Jabado and Katelyn B Herman and Kwang-Ming Liu and Andrea D. Marshall and Riley A. Pollom and Evgeny V. Romanov and Colin A. Simpfendorfer and Jamie S. Yin and Holly K. Kindsvater and Nicholas K. Dulvy},
  journal={Nature},
  year={2021},
  volume={589},
  pages={567-571}
}
Overfishing is the primary cause of marine defaunation, yet declines in and increasing extinction risks of individual species are difficult to measure, particularly for the largest predators found in the high seas 1 – 3 . Here we calculate two well-established indicators to track progress towards Aichi Biodiversity Targets and Sustainable Development Goals 4 , 5 : the Living Planet Index (a measure of changes in abundance aggregated from 57 abundance time-series datasets for 18 oceanic shark… 
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