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Extending community trajectory analysis: New metrics and representation

Author

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  • Sturbois, A.
  • De Cáceres, M.
  • Sánchez-Pinillos, M.
  • Schaal, G.
  • Gauthier, O.
  • Mao, P. Le
  • Ponsero, A.
  • Desroy, N.

Abstract

Ecological research focuses on the spatio-temporal patterns of ecosystems and communities. The recently proposed framework of Community Trajectory Analysis considers community dynamics as trajectories in a chosen space of community resemblance and utilizes geometrical properties of trajectories to compare and analyse temporal changes. Here, we extend the initial framework, which focused on consecutive trajectory segments, by considering additional metrics with respect to initial or baseline states. Addressing questions about community dynamics and more generally temporal and spatial ecological variability requires synthetic and efficient modes of representation. Hence, we propose a set of innovative maps, charts and trajectory roses to represent trajectory properties and complement the panel of traditional modes of representation used in community ecology. We use four case studies to highlight the complementarity and the ability of the new metrics and innovative figures to illustrate ecological trajectories and to facilitate their interpretation. Finally, we encourage ecologists skilled in multivariate analysis to integrate CTA into their toolbox in order to quantitatively evaluate spatio-temporal changes.

Suggested Citation

  • Sturbois, A. & De Cáceres, M. & Sánchez-Pinillos, M. & Schaal, G. & Gauthier, O. & Mao, P. Le & Ponsero, A. & Desroy, N., 2021. "Extending community trajectory analysis: New metrics and representation," Ecological Modelling, Elsevier, vol. 440(C).
    • Handle: RePEc:eee:ecomod:v:440:y:2021:i:c:s0304380020304646
    DOI: 10.1016/j.ecolmodel.2020.109400
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    References listed on IDEAS

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    1. Boit, Alice & Spencer, Matthew, 2019. "Equivalence and dissimilarity of ecosystem states," Ecological Modelling, Elsevier, vol. 396(C), pages 12-22.
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