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  1. Continent-wide tree fecundity driven by indirect climate effects

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    Author(s): James S. Clark; Robert Andrus; Melaine Aubry-Kientz; Yves Bergeron; Michal Bogdziewicz; Don C. Bragg; Dale Brockway; Natalie L. Cleavitt; Susan Cohen; Benoit Courbaud; Robert Daley; Adrian J. Das; Michael Dietze; Timothy J. Fahey; Istem Fer; Jerry F. Franklin; Catherine A. Gehring; Gregory S. Gilbert; Cathryn H. Greenberg; Qinfeng Guo; Janneke HilleRisLambers; Ines Ibanez; Jill Johnstone; Christopher L. Kilner; Johannes Knops; Walter D. Koenig; Georges Kunstler; Jalene M. LaMontagne; Kristin L. Legg; Jordan Luongo; James A. Lutz; Diana Macias; Eliot J. B. McIntire; Yassine Messaoud; Christopher M. Moore; Emily Moran; Jonathan A. Myers; Orrin B. Myers; Chase Nunez; Robert Parmenter; Sam Pearse; Scott Pearson; Renata Poulton-Kamakura; Ethan Ready; Miranda D. Redmond; Chantal D. Reid; Kyle C. Rodman; C. Lane Scher; William H. Schlesinger; Amanda M. Schwantes; Erin Shanahan; Shubhi Sharma; Michael A. Steele; Nathan L. Stephenson; Samantha Sutton; Jennifer J. Swenson; Margaret Swift; Thomas T. Veblen; Amy V. Whipple; Thomas G. Whitham; Andreas P. Wion; Kai Zhu; Roman Zlotin
    Date: 2021
    Source: Nature Communications
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    DOI: https://doi.org/10.1038/s41467-020-20836-3
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    Description

    Indirect climate effects on tree fecundity that come through variation in size and growth (climate-condition interactions) are not currently part of models used to predict future forests. Trends in species abundances predicted from meta-analyses and species distribution models will be misleading if they depend on the conditions of individuals. Here we find from a synthesis of tree species in North America that climate-condition interactions dominate responses through two pathways, i) effects of growth that depend on climate, and ii) effects of climate that depend on tree size. Because tree fecundity first increases and then declines with size, climate change that stimulates growth promotes a shift of small trees to more fecund sizes, but the opposite can be true for large sizes. Change the depresses growth also affects fecundity. We find a biogeographic divide, with these interactions reducing fecundity in the West and increasing it in the East. Continental-scale responses of these forests are thus driven largely by indirect effects, recommending management for climate change that considers multiple demographic rates.

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    Citation

    Clark, James S.; Andrus, Robert; Aubry-Kientz, Melaine; Bergeron, Yves; Bogdziewicz, Michal; Bragg, Don C.; Brockway, Dale; Cleavitt, Natalie L.; Cohen, Susan; Courbaud, Benoit; Daley, Robert; Das, Adrian J.; Dietze, Michael; Fahey, Timothy J.; Fer, Istem; Franklin, Jerry F.; Gehring, Catherine A.; Gilbert, Gregory S.; Greenberg, Cathryn H.; Guo, Qinfeng; HilleRisLambers, Janneke; Ibanez, Ines; Johnstone, Jill; Kilner, Christopher L.; Knops, Johannes; Koenig, Walter D.; Kunstler, Georges; LaMontagne, Jalene M.; Legg, Kristin L.; Luongo, Jordan; Lutz, James A.; Macias, Diana; McIntire, Eliot J. B.; Messaoud, Yassine; Moore, Christopher M.; Moran, Emily; Myers, Jonathan A.; Myers, Orrin B.; Nunez, Chase; Parmenter, Robert; Pearse, Sam; Pearson, Scott; Poulton-Kamakura, Renata; Ready, Ethan; Redmond, Miranda D.; Reid, Chantal D.; Rodman, Kyle C.; Scher, C. Lane; Schlesinger, William H.; Schwantes, Amanda M.; Shanahan, Erin; Sharma, Shubhi; Steele, Michael A.; Stephenson, Nathan L.; Sutton, Samantha; Swenson, Jennifer J.; Swift, Margaret; Veblen, Thomas T.; Whipple, Amy V.; Whitham, Thomas G.; Wion, Andreas P.; Zhu, Kai; Zlotin, Roman. 2021. Continent-wide tree fecundity driven by indirect climate effects. Nature Communications. 12: 1242. 11 p. https://doi.org/10.1038/s41467-020-20836-3.

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