Metabolic asymmetry and the global diversity of marine predators

  title={Metabolic asymmetry and the global diversity of marine predators},
  author={John M. Grady and Brian S. Maitner and Ara S. Winter and Kristin Kaschner and Derek P. Tittensor and Sydne Record and Felisa A. Smith and Adam M. Wilson and Anthony I. Dell and Phoebe L. Zarnetske and Helen J. Wearing and Brian Alfaro and James H. Brown},
Cold is better for polar predators Generally, biodiversity is higher in the tropics than at the poles. This pattern is present across taxa as diverse as plants and insects. Marine mammals and birds buck this trend, however, with more species and more individuals occurring at the poles than at the equator. Grady et al. asked why this is (see the Perspective by Pyenson). They analyzed a comprehensive dataset of nearly 1000 species of shark, fish, reptiles, mammals, and birds. They found that… 

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