Urban warming reduces aboveground carbon storage

Emily Meineke*, Elsa Youngsteadt, Robert Roberdeau Dunn, Steven D. Frank

*Corresponding author for this work
    39 Citations (Scopus)

    Abstract

    A substantial amount of global carbon is stored in mature trees. However, no experiments to date test how warming affects mature tree carbon storage. Using a unique, citywide, factorial experiment, we investigated how warming and insect herbivory affected physiological function and carbon sequestration (carbon stored per year) of mature trees. Urban warming increased herbivorous arthropod abundance on trees, but these herbivores had negligible effects on tree carbon sequestration. Instead, urban warming was associated with an estimated 12% loss of carbon sequestration, in part because photosynthesis was reduced at hotter sites. Ecosystem service assessments that do not consider urban conditions may overestimate urban tree carbon storage. Because urban and global warming are becoming more intense, our results suggest that urban trees will sequester even less carbon in the future.

    Original languageEnglish
    Article number20161574
    JournalRoyal Society of London. Proceedings B. Biological Sciences
    Volume283
    Issue number1840
    Number of pages9
    ISSN0962-8452
    DOIs
    Publication statusPublished - 12 Oct 2016

    Keywords

    • Carbon storage
    • Climate change
    • Ecosystem services
    • Herbivory
    • Urban ecology
    • Urban heat island effect

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