Quantifying multi-scale pastoral mobility: Developing a metrics system and using GPS-Tracking data for evaluation

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    1 Citation (Scopus)

    Abstract

    Mobility appears to be in decline in modern pastoralism, but measurement of mobility has been ambiguous. This paper develops a metrics system to evaluate multi-scale pastoral mobility, and uses continuous, frequent, cross-season GPS-tracking data to investigate movement patterns in five pastoral communities in southern Ethiopia. The metrics system includes both broad-scale indicators such as home range and number of camps, and fine-scale indicators such as herding loop length, daily maximum distance from camp, and angular distribution of observed cow locations. The findings suggest pastoral mobility patterns are highly heterogeneous, and there are clear trade-offs among different mobility indicators in pastoralists’ herding strategies. In contrast to conventional understanding that mobility declines when pastoralists settle down, I find evidence of sedentarized pastoralists engaging in more rigorous fine-scale movement than those who keep practicing camp relocation. Thus, pastoral mobility cannot be generalized according to any single indicator, and comprehensive evaluation is necessary to advance our understanding of pastoral mobility as a complex strategy to manage herds in the arid and semi-arid environments.

    Original languageEnglish (US)
    Pages (from-to)88-97
    Number of pages10
    JournalJournal of Arid Environments
    Volume153
    DOIs
    StatePublished - Jun 2018

    Fingerprint

    herding
    GPS
    pastoralism
    dry environmental conditions
    Ethiopia
    herds
    cows
    evaluation
    arid environment
    relocation
    home range
    indicator

    Keywords

    • Ethiopia
    • GPS-Tracking
    • Metrics system
    • Mobility
    • Pastoralists

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Ecology
    • Earth-Surface Processes

    Cite this

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    title = "Quantifying multi-scale pastoral mobility: Developing a metrics system and using GPS-Tracking data for evaluation",
    abstract = "Mobility appears to be in decline in modern pastoralism, but measurement of mobility has been ambiguous. This paper develops a metrics system to evaluate multi-scale pastoral mobility, and uses continuous, frequent, cross-season GPS-tracking data to investigate movement patterns in five pastoral communities in southern Ethiopia. The metrics system includes both broad-scale indicators such as home range and number of camps, and fine-scale indicators such as herding loop length, daily maximum distance from camp, and angular distribution of observed cow locations. The findings suggest pastoral mobility patterns are highly heterogeneous, and there are clear trade-offs among different mobility indicators in pastoralists’ herding strategies. In contrast to conventional understanding that mobility declines when pastoralists settle down, I find evidence of sedentarized pastoralists engaging in more rigorous fine-scale movement than those who keep practicing camp relocation. Thus, pastoral mobility cannot be generalized according to any single indicator, and comprehensive evaluation is necessary to advance our understanding of pastoral mobility as a complex strategy to manage herds in the arid and semi-arid environments.",
    keywords = "Ethiopia, GPS-Tracking, Metrics system, Mobility, Pastoralists",
    author = "Chuan Liao",
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    N2 - Mobility appears to be in decline in modern pastoralism, but measurement of mobility has been ambiguous. This paper develops a metrics system to evaluate multi-scale pastoral mobility, and uses continuous, frequent, cross-season GPS-tracking data to investigate movement patterns in five pastoral communities in southern Ethiopia. The metrics system includes both broad-scale indicators such as home range and number of camps, and fine-scale indicators such as herding loop length, daily maximum distance from camp, and angular distribution of observed cow locations. The findings suggest pastoral mobility patterns are highly heterogeneous, and there are clear trade-offs among different mobility indicators in pastoralists’ herding strategies. In contrast to conventional understanding that mobility declines when pastoralists settle down, I find evidence of sedentarized pastoralists engaging in more rigorous fine-scale movement than those who keep practicing camp relocation. Thus, pastoral mobility cannot be generalized according to any single indicator, and comprehensive evaluation is necessary to advance our understanding of pastoral mobility as a complex strategy to manage herds in the arid and semi-arid environments.

    AB - Mobility appears to be in decline in modern pastoralism, but measurement of mobility has been ambiguous. This paper develops a metrics system to evaluate multi-scale pastoral mobility, and uses continuous, frequent, cross-season GPS-tracking data to investigate movement patterns in five pastoral communities in southern Ethiopia. The metrics system includes both broad-scale indicators such as home range and number of camps, and fine-scale indicators such as herding loop length, daily maximum distance from camp, and angular distribution of observed cow locations. The findings suggest pastoral mobility patterns are highly heterogeneous, and there are clear trade-offs among different mobility indicators in pastoralists’ herding strategies. In contrast to conventional understanding that mobility declines when pastoralists settle down, I find evidence of sedentarized pastoralists engaging in more rigorous fine-scale movement than those who keep practicing camp relocation. Thus, pastoral mobility cannot be generalized according to any single indicator, and comprehensive evaluation is necessary to advance our understanding of pastoral mobility as a complex strategy to manage herds in the arid and semi-arid environments.

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