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Can seedlings' physiological information improve vegetation distribution predictions at local scales?

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Abstract

Physiological information has been successfully included in marine Species Distribution Models (SDM) before, but few have considered a previous development stage that could have affected the present-day distribution of the species at local scales. The aim of this study is to analyze the inclusion of physiological information of seedling survival on a correlative SDM based on adult present-day presences. The species were the invasive shrub Baccharis halimifolia and the native saltmarsh Juncus maritimus. For each species, five SDM were established using different approaches: using only experimentally derived physiological data, a correlative model with environmental predictors, additive combinations of presence/absence maps derived from the previous models, and a correlative model with the physiological data as a predictor variable. For B. halimifolia, the inclusion of the physiological data as a predictor variable yielded better results than with the other approaches; with J maritimus, this inclusion achieved an accuracy as high as the model with only environmental variables as predictors. The additive combinations generated less accurate models but offered possible advantages in future specialized studies. The results for B. halimifolia could extrapolate to other invasive species that rely on spreading high amounts of individuals and are more vulnerable in their early stages than in their growing and adult phases. Thus, this approach can improve the capacity for mapping invasive species’ distributions at local scales, and the conservation efforts to control biological invasions in estuaries and coastal ecosystems.

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Acknowledgements

This work was partially funded by the Life-CONVIVE Project (LIFE14 NAT/ES/001213) of the LIFE Programme of the European Union and by a research Grant to IH Cantabria by the General Directory of Conservation of the Regional Government of Cantabria. FC was supported by the Universidad de Costa Rica (scholarship OAICE-CAB-09–156-2014). This work is part of the PhD thesis of FC, under the direction of BO and JAJ. The authors thank AEMET and UC for the data provided for this work (Spain02 v5 dataset, available at https://www.meteo.unican.es/datasets/spain02).

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All authors conceived the ideas and designed the methodology; FC developed the models, analyzed the data, and led the writing of the manuscript. All authors contributed critically to the drafts and gave final approval for publication.

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Correspondence to J. A. Juanes.

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Calleja, F., Ondiviela, B., Puente, A. et al. Can seedlings' physiological information improve vegetation distribution predictions at local scales?. Biol Invasions 22, 2509–2523 (2020). https://doi.org/10.1007/s10530-020-02266-w

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  • DOI: https://doi.org/10.1007/s10530-020-02266-w

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