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Use of support influences height and above-ground allometry but not biomass allocation to different aerial organs of an invasive vine

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Abstract

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Alternative growth forms of C. madagascariensis (liana, shrub) did not differ with respect to biomass allocation to aerial organs or leaf area ratio contrasting to previous liana vs. tree/shrub comparisons.

Abstract

Compared to trees, lianas allocate less biomass to support functions, investing instead in stem elongation, leaf area expansion and reproduction, making them more efficient at obtaining resources in crowded stands. We hypothesized that growth form plasticity, accompanied by shifts in biomass allocation to different aboveground organs, can be advantageous to invasive liana species, enabling them to invade both crowded and open stands. We tested this hypothesis by destructively collecting the above-ground parts of individuals of a vine species invading Brazilian northeastern ecosystems. Using allometric models relating height, above-ground biomass (AGB), biomass fractions of above-ground organs and leaf area ratio (LAR) to diameter, as well as wood density (WD) and specific leaf area (SLA) measurements, we verified size, allocation and investment differences between supported and self-supporting plants. We found that a quadratic model described organ fraction vs. stem diameter allometry better than power functions employed previously. Support use allowed plants to reach greater height and AGB, but didn’t induce plasticity in fractional biomass allocation and investments (SLA, WD) or in LAR. This demonstrated that support use is not always accompanied by changes in allocation patterns as shown previously. Higher AGB and height in support-using plants allow better leaf display, resource supply to leaves and dispersal. Previous studies with the same species showed that juveniles modify biomass allocation under light limitation. These findings suggests that biomass allocation plasticity due to support use depends on how much light is a limiting factor. Developmental plasticity under different limiting factors may contribute to invasion success.

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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported by the Development Agency of the State of Ceará (ADECE), Carnauba Wax Refining Industries Union of Ceará (SINDICARNAÚBA), Coordination of Higher Level Personnel Improvement—Brazil (CAPES, Finance Code 001) and Institutional Program of Undergraduate Academic Initiation Scholarships, Federal University of Ceará (PBIA/UFC). We would also like to thank the Caatinga Association for project management, to the Carnaúba Memorial for granting us access to the study site and providing support for field activities, to Marisa Q. Mendonça and Alan V. Pereira for their help in laboratory activities, and Andréa P. Silveira, Juliano Van Melis and anonymous reviewers for contributions on early versions of this manuscript.

Funding

This work was supported by Development Agency of the State of Ceará (ADECE), Carnauba Wax Refining Industries Union of Ceará (SINDICARNAÚBA), Coordination of Higher Level Personnel Improvement—Brazil (CAPES, Finance Code 001) and Institutional Program of Undergraduate Academic Initiation Scholarships, Federal University of Ceará (PBIA/UFC).

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Authors

Contributions

TSF, RWB, WM, FSA and RCC: conceptualized the study, TSF and RCC: conducted fieldwork, TSF and ECDC: performed laboratory analysis, TSF and RCC: performed statistical analyses, TSF: wrote the original draft and RWB, WM, FSA and RCC: reviewed and edited the manuscript.

Corresponding author

Correspondence to Rafael Carvalho da Costa.

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The authors have no relevant financial or non-financial interests to disclose.

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Communicated by Akio Inoue.

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468_2022_2356_MOESM1_ESM.xlsx

Tables with the results of model selection and fitted equations for the different response variables of this study (XLSX 8 KB)

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Feitosa, T.S., de Carvalho, E.C.D., Barreto, R.W. et al. Use of support influences height and above-ground allometry but not biomass allocation to different aerial organs of an invasive vine. Trees 37, 373–383 (2023). https://doi.org/10.1007/s00468-022-02356-3

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  • DOI: https://doi.org/10.1007/s00468-022-02356-3

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