Lowland plant arrival in alpine ecosystems facilitates a decrease in soil carbon content under experimental climate warming. Walker, T. W., Gavazov, K., Guillaume, T., Lambert, T., Mariotte, P., Routh, D., Signarbieux, C., Block, S., Münkemüller, T., Nomoto, H., Crowther, T. W, Richter, A., Buttler, A., & Alexander, J. M eLife, 11:e78555, May, 2022. Publisher: eLife Sciences Publications, Ltd![Lowland plant arrival in alpine ecosystems facilitates a decrease in soil carbon content under experimental climate warming [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Climate warming is releasing carbon from soils around the world, constituting a positive climate feedback. Warming is also causing species to expand their ranges into new ecosystems. Yet, in most ecosystems, whether range expanding species will amplify or buffer expected soil carbon loss is unknown. Here, we used two whole-community transplant experiments and a follow-up glasshouse experiment to determine whether the establishment of herbaceous lowland plants in alpine ecosystems influences soil carbon content under warming. We found that warming (transplantation to low elevation) led to a negligible decrease in alpine soil carbon content, but its effects became significant and 52% ± 31% (mean ± 95% confidence intervals) larger after lowland plants were introduced at low density into the ecosystem. We present evidence that decreases in soil carbon content likely occurred via lowland plants increasing rates of root exudation, soil microbial respiration, and CO2 release under warming. Our findings suggest that warming-induced range expansions of herbaceous plants have the potential to alter climate feedbacks from this system, and that plant range expansions among herbaceous communities may be an overlooked mediator of warming effects on carbon dynamics.
@article{walker_lowland_2022,
title = {Lowland plant arrival in alpine ecosystems facilitates a decrease in soil carbon content under experimental climate warming},
volume = {11},
issn = {2050-084X},
url = {https://doi.org/10.7554/eLife.78555},
doi = {10.7554/eLife.78555},
abstract = {Climate warming is releasing carbon from soils around the world, constituting a positive climate feedback. Warming is also causing species to expand their ranges into new ecosystems. Yet, in most ecosystems, whether range expanding species will amplify or buffer expected soil carbon loss is unknown. Here, we used two whole-community transplant experiments and a follow-up glasshouse experiment to determine whether the establishment of herbaceous lowland plants in alpine ecosystems influences soil carbon content under warming. We found that warming (transplantation to low elevation) led to a negligible decrease in alpine soil carbon content, but its effects became significant and 52\% ± 31\% (mean ± 95\% confidence intervals) larger after lowland plants were introduced at low density into the ecosystem. We present evidence that decreases in soil carbon content likely occurred via lowland plants increasing rates of root exudation, soil microbial respiration, and CO2 release under warming. Our findings suggest that warming-induced range expansions of herbaceous plants have the potential to alter climate feedbacks from this system, and that plant range expansions among herbaceous communities may be an overlooked mediator of warming effects on carbon dynamics.},
journal = {eLife},
author = {Walker, Tom WN and Gavazov, Konstantin and Guillaume, Thomas and Lambert, Thibault and Mariotte, Pierre and Routh, Devin and Signarbieux, Constant and Block, Sebastián and Münkemüller, Tamara and Nomoto, Hanna and Crowther, Thomas W and Richter, Andreas and Buttler, Alexandre and Alexander, Jake M},
editor = {Schmid, Bernhard and Schuman, Meredith C and Schmid, Bernhard and Jing, Xin and Zhu, Biao},
month = may,
year = {2022},
note = {Publisher: eLife Sciences Publications, Ltd},
keywords = {carbon cycling, climate change, plant ecophysiology, plant redistributions, plant–soil interactions, soil microbes},
pages = {e78555},
}
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Yet, in most ecosystems, whether range expanding species will amplify or buffer expected soil carbon loss is unknown. Here, we used two whole-community transplant experiments and a follow-up glasshouse experiment to determine whether the establishment of herbaceous lowland plants in alpine ecosystems influences soil carbon content under warming. We found that warming (transplantation to low elevation) led to a negligible decrease in alpine soil carbon content, but its effects became significant and 52% ± 31% (mean ± 95% confidence intervals) larger after lowland plants were introduced at low density into the ecosystem. We present evidence that decreases in soil carbon content likely occurred via lowland plants increasing rates of root exudation, soil microbial respiration, and CO2 release under warming. Our findings suggest that warming-induced range expansions of herbaceous plants have the potential to alter climate feedbacks from this system, and that plant range expansions among herbaceous communities may be an overlooked mediator of warming effects on carbon dynamics.","journal":"eLife","author":[{"propositions":[],"lastnames":["Walker"],"firstnames":["Tom","WN"],"suffixes":[]},{"propositions":[],"lastnames":["Gavazov"],"firstnames":["Konstantin"],"suffixes":[]},{"propositions":[],"lastnames":["Guillaume"],"firstnames":["Thomas"],"suffixes":[]},{"propositions":[],"lastnames":["Lambert"],"firstnames":["Thibault"],"suffixes":[]},{"propositions":[],"lastnames":["Mariotte"],"firstnames":["Pierre"],"suffixes":[]},{"propositions":[],"lastnames":["Routh"],"firstnames":["Devin"],"suffixes":[]},{"propositions":[],"lastnames":["Signarbieux"],"firstnames":["Constant"],"suffixes":[]},{"propositions":[],"lastnames":["Block"],"firstnames":["Sebastián"],"suffixes":[]},{"propositions":[],"lastnames":["Münkemüller"],"firstnames":["Tamara"],"suffixes":[]},{"propositions":[],"lastnames":["Nomoto"],"firstnames":["Hanna"],"suffixes":[]},{"propositions":[],"lastnames":["Crowther"],"firstnames":["Thomas","W"],"suffixes":[]},{"propositions":[],"lastnames":["Richter"],"firstnames":["Andreas"],"suffixes":[]},{"propositions":[],"lastnames":["Buttler"],"firstnames":["Alexandre"],"suffixes":[]},{"propositions":[],"lastnames":["Alexander"],"firstnames":["Jake","M"],"suffixes":[]}],"editor":[{"propositions":[],"lastnames":["Schmid"],"firstnames":["Bernhard"],"suffixes":[]},{"propositions":[],"lastnames":["Schuman"],"firstnames":["Meredith","C"],"suffixes":[]},{"propositions":[],"lastnames":["Schmid"],"firstnames":["Bernhard"],"suffixes":[]},{"propositions":[],"lastnames":["Jing"],"firstnames":["Xin"],"suffixes":[]},{"propositions":[],"lastnames":["Zhu"],"firstnames":["Biao"],"suffixes":[]}],"month":"May","year":"2022","note":"Publisher: eLife Sciences Publications, Ltd","keywords":"carbon cycling, climate change, plant ecophysiology, plant redistributions, plant–soil interactions, soil microbes","pages":"e78555","bibtex":"@article{walker_lowland_2022,\n\ttitle = {Lowland plant arrival in alpine ecosystems facilitates a decrease in soil carbon content under experimental climate warming},\n\tvolume = {11},\n\tissn = {2050-084X},\n\turl = {https://doi.org/10.7554/eLife.78555},\n\tdoi = {10.7554/eLife.78555},\n\tabstract = {Climate warming is releasing carbon from soils around the world, constituting a positive climate feedback. Warming is also causing species to expand their ranges into new ecosystems. Yet, in most ecosystems, whether range expanding species will amplify or buffer expected soil carbon loss is unknown. Here, we used two whole-community transplant experiments and a follow-up glasshouse experiment to determine whether the establishment of herbaceous lowland plants in alpine ecosystems influences soil carbon content under warming. We found that warming (transplantation to low elevation) led to a negligible decrease in alpine soil carbon content, but its effects became significant and 52\\% ± 31\\% (mean ± 95\\% confidence intervals) larger after lowland plants were introduced at low density into the ecosystem. We present evidence that decreases in soil carbon content likely occurred via lowland plants increasing rates of root exudation, soil microbial respiration, and CO2 release under warming. 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