• Article
    | Open Access

    Analysis of a continuous and independently dated record of glaciation in the tropical Andes spanning 700,000 years shows that Andean glaciation follows patterns of global ice volume change, with a periodicity of approximately 100,000 years.

    • D. T. Rodbell
    • , R. G. Hatfield
    •  & S. Pierdominici
  • Article |

    Non-perennial rivers and streams are mapped globally, showing that more than half of rivers worldwide experience no flow for at least one day per year.

    • Mathis Loïc Messager
    • , Bernhard Lehner
    •  & Thibault Datry
  • Article |

    Analysis of temperate lakes finds a widespread decline in dissolved oxygen concentrations in surface and deep waters, which is associated with reduced solubility at warmer surface water temperatures and increased stratification at depth.

    • Stephen F. Jane
    • , Gretchen J. A. Hansen
    •  & Kevin C. Rose
  • Article |

    Modelling and remote sensing show that by the end of the twenty-first century, lake heatwaves will be several degrees Celsius warmer and some will be months longer, with potentially major adverse consequences for lake ecosystems.

    • R. Iestyn Woolway
    • , Eleanor Jennings
    •  & Stephen C. Maberly
  • Perspective |

    The current and expected environmental consequences of built dams and proposed dam constructions in the Amazon basin are explored with the help of a Dam Environmental Vulnerability Index.

    • Edgardo M. Latrubesse
    • , Eugenio Y. Arima
    •  & Jose C. Stevaux
  • Letter |

    A 1.3-million-year-long climate history from the Lake Malawi basin in eastern Africa displays a trend towards progressively wetter conditions superimposed on strong 100,000-year eccentricity cycles of temperature and rainfall since the Mid-Pleistocene Transition around 900,000 years ago.

    • T. C. Johnson
    • , J. P. Werne
    •  & J. S. Sinninghe Damsté
  • Letter |

    An analysis of the relative effects of transpiration and evaporation, which can be distinguished by how they affect isotope ratios in water, shows that transpiration is by far the largest water flux from Earth’s continents, representing 80 to 90 per cent of terrestrial evapotranspiration and using half of all solar energy absorbed by land surfaces.

    • Scott Jasechko
    • , Zachary D. Sharp
    •  & Peter J. Fawcett