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Article Dans Une Revue Ecological Complexity Année : 2013

Identifying the relevant spatial and temporal scales in plant species occurrence models : the case of arable weeds in landscape mosaic of crops

Benoit Ricci
Sandrine Petit

Résumé

Species distribution models (SDMs) represent potential valuable tools to explore factors underlying species occurrence over a large range of spatial scales. However, a recurrent problem with this approach is identifying the appropriate spatial and temporal scales for modeling. This problem is reinforced in plant populations for which it is often difficult to evaluate the limits of habitat patches. In this study, we aimed at developing SDMs for 13 arable weeds in highly dynamic small agricultural region. Although weed dynamic is widely thought to result from local processes, we explored the spatial and temporal scales that would best explain species occurrence over the area. Models were developed using weed occurrence data in 58 fields over four consecutive years (2008–2011) and spatial organization of management practices over the landscape for eight consecutive years (2004–2011). We used a model selection approach based on the minimum AIC criteria to select the best SDMs. Results showed that SDMs can successfully be applied to model weed occurrence over a small region. The appropriate temporal scale to consider in weed SDMs should encompass several years to reflect the effect of management history while the relevant spatial scale should extend beyond the crop field itself and include the field border and neighboring fields. This study illustrates that adopting a multiple scale approach is successful to model plant occurrence over a highly dynamic landscape.
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Dates et versions

hal-02651950 , version 1 (29-05-2020)

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Citer

Audrey Alignier, Benoit Ricci, Luc Biju-Duval, Sandrine Petit. Identifying the relevant spatial and temporal scales in plant species occurrence models : the case of arable weeds in landscape mosaic of crops. Ecological Complexity, 2013, 15, pp.17-25. ⟨10.1016/j.ecocom.2013.01.007⟩. ⟨hal-02651950⟩
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