Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Grazing livestock move by Lévy walks: Implications for soil health and environment

Alejandro Romero‐Ruiz, M. Jordana Rivero, Alice E. Milne, Sarah Morgan, Paulo Méo-Filho, Simon Pulley, Carmen Segura, Paul Harris, Michael R. F. Lee, K. Coleman, L. M. Cardenas, A. P. Whitmore

Journal of Environmental Management · 2023

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Summary

This study characterised grazing livestock movement using GPS data and demonstrated that movement patterns follow Lévy walk distributions, amenable to probabilistic simulation. The authors developed the 'Moovement model', which integrates animal movement dynamics with soil structure models to predict management-specific changes in soil bulk density. Model predictions aligned with field measurements and revealed that rotational grazing produced similar soil disturbance to conventional grazing despite higher stocking densities, suggesting that grazing strategy optimisation requires spatially-explicit understanding of animal movement patterns and their cumulative effects on soil properties.

UK applicability

The modelling framework and movement characterisation approach are potentially applicable to UK grassland systems, though the geographic origin of the study data is not stated in the abstract. The findings on relative soil disturbance between conventional and rotational grazing at varying stocking densities may inform UK grazing management policy, particularly regarding soil health outcomes under intensified rotational systems.

Key measures

GPS-tracked livestock movement patterns; soil bulk density; grazing intensity; spatial distribution of grazing pressure; Lévy walk probability density functions

Outcomes reported

The study characterised daily and seasonal grazing patterns using GPS data from conventionally- and rotationally-grazed pastures, and used a novel 'Moovement model' to predict spatially-explicit changes in key soil properties, particularly bulk density, under different grazing management strategies.

Theme
Farming systems, soils & land use
Subject
Grassland & pasture systems
Study type
Research
Study design
Field trial with modelling framework
Source type
Peer-reviewed study
Status
Published
System type
Pasture-based livestock
DOI
10.1016/j.jenvman.2023.118835
Catalogue ID
BFmowc1zyw-kri0s5

Topic tags

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