Articles | Volume 20, issue 15
https://doi.org/10.5194/bg-20-3367-2023
https://doi.org/10.5194/bg-20-3367-2023
Research article
 | 
14 Aug 2023
Research article |  | 14 Aug 2023

Mammalian bioturbation amplifies rates of both hillslope sediment erosion and accumulation along the Chilean climate gradient

Paulina Grigusova, Annegret Larsen, Roland Brandl, Camilo del Río, Nina Farwig, Diana Kraus, Leandro Paulino, Patricio Pliscoff, and Jörg Bendix

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Cited articles

Anderson, R. S., Rajaram, H., and Anderson, S. P.: Climate driven coevolution of weathering profiles and hillslope topography generates dramatic differences in critical zone architecture, Hydrol. Process., 33, 4–19, https://doi.org/10.1002/hyp.13307, 2019. 
Beasley, D. B., Huggins, L. F., and Monke, E. J.: ANSWERS: A Model for Watershed Planning, T. ASAE, 23, 938–944, https://doi.org/10.13031/2013.34692, 1980. 
Beven, K. J. and Kirkby, M. J.: A physically based, variable contributing area model of basin hydrology/Un modèle à base physique de zone d'appel variable de l'hydrologie du bassin versant, Hydrol. Sci. Bull., 24, 43–69, https://doi.org/10.1080/02626667909491834, 1979. 
Black, T. A. and Montgomery, D. R.: Sediment transport by burrowing mammals, Marin County, California, Earth Surf. Proc. Land., 16, 163–172, https://doi.org/10.1002/esp.3290160207, 1991. 
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In our study, we included bioturbation into a soil erosion model and ran the model for several years under two conditions: with and without bioturbation. We validated the model using several sediment fences in the field. We estimated the modeled sediment redistribution and surface runoff and the impact of bioturbation on these along a climate gradient. Lastly, we identified environmental parameters determining the positive or negative impact of bioturbation on sediment redistribution.
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