Fluctuations in resource availability shape the competitive balance among non-native plant species

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dc.citation.articleNumbere2795
dc.citation.issueNumber1
dc.citation.journalTitleEcological Applications
dc.citation.volumeNumber34
dc.contributor.authorTao, Zhibin
dc.contributor.authorShen, Changchao
dc.contributor.authorQin, Wenchao
dc.contributor.authorNie, Baoguo
dc.contributor.authorChen, Pengdong
dc.contributor.authorWan, Jinlong
dc.contributor.authorZhang, Kaoping
dc.contributor.authorHuang, Wei
dc.contributor.authorSiemann, Evan
dc.date.accessioned2024-05-03T15:51:00Z
dc.date.available2024-05-03T15:51:00Z
dc.date.issued2024
dc.description.abstractFluctuating resource availability plays a critical role in determining non-native plant invasions through mediating the competitive balance between non-native and native species. However, the impact of fluctuating resource availability on interactions among non-native species remains largely unknown. This represents a barrier to understanding invasion mechanisms, particularly in habitats that harbor multiple non-native species with different responses to fluctuating resource availability. To examine the responses of non-native plant species to nutrient fluctuations, we compared the growth of each of 12 non-native species found to be common in local natural areas to nutrients supplied at a constant rate or supplied as a single large pulse in a pot experiment. We found that seven species produced more biomass with pulsed nutrients compared to constant nutrients (hereafter “benefitting species”), while the other five species did not differ between nutrient enrichment treatments (hereafter “non-benefitting species”). To investigate how nutrient fluctuations influence the interactions among non-native plant species, we established experimental non-native communities in the field with two benefitting and two non-benefitting non-native species. Compared with constant nutrient supply, the single large pulse of nutrient did not influence community biomass, but strongly increased the biomass and cover of the benefitting species and decreased those of the non-benefitting species. Furthermore, the benefitting species had higher leaf N content and greater plant height when nutrients were supplied as a single large pulse than at a constant rate, whereas the non-benefitting species showed no differences in leaf N content and were shorter when nutrients were supplied as a single large pulse than at a constant rate. Our results add to the growing evidence that the individual responses of non-native species to nutrient fluctuation are species-specific. More importantly, benefitting species were favored by nutrients coming in a pulse, while non-benefitting ones were favored by nutrients coming constantly when they grew together. This suggests that nutrient fluctuations can mediate the competitive balance among non-native plants and may thus determine their invasion success in a community harboring multiple non-native plant species.
dc.identifier.citationTao, Z., Shen, C., Qin, W., Nie, B., Chen, P., Wan, J., Zhang, K., Huang, W., & Siemann, E. (2024). Fluctuations in resource availability shape the competitive balance among non-native plant species. Ecological Applications, 34(1), e2795. https://doi.org/10.1002/eap.2795
dc.identifier.digitalFluctuations-resource-availability
dc.identifier.doihttps://doi.org/10.1002/eap.2795
dc.identifier.urihttps://hdl.handle.net/1911/115493
dc.language.isoeng
dc.publisherWiley
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleFluctuations in resource availability shape the competitive balance among non-native plant species
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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