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The Piosphere: Sheep Track and Dung Patterns
Abstract
The basic ecological unit in arid areas under grazing animals is envisaged as a zone round a watering point and is termed the piosphere (from the Greek "pios" = to drink). A piosphere in which sheep tracks can be distinguished in aerial photographs has been investigated; length, direction and type of track are described; remarkable adherance of the tracks to the near radial (significant deviation of 2.5° to left) indicate navigational skill in sheep. Sheep forage but do not cut visible tracks between the radial tracks. Sheep density can be estimated from dung density since pellets of dung persist for long periods in the arid regions. It is suggested that understanding the piosphere will contribute to management in arid rangelands.
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Citations
Cited by
Grazing impact in relation to livestock watering points
Andrew, M. H. (1988) · Trends in Ecology & Evolution · doi:10.1016/0169-5347(88)90090-0 · Cited by 263
Environmental determinants of habitat and kill site selection in a large carnivore: scale matters
Davidson, Z., Valeix, M., Loveridge, A. J., Hunt, J. E., Johnson, P. J., Madzikanda, H., & Macdonald, D. W. (2012) · Journal of Mammalogy · doi:10.1644/10-mamm-a-424.1 · Cited by 110
Modelling the effects of water-point closure and fencing removal: A GIS approach
Graz, F. P., Westbrooke, M. E., & Florentine, S. K. (2012) · Journal of Environmental Management · doi:10.1016/j.jenvman.2012.03.014 · Cited by 19
Metadata
- Authors
- Lange, R. T.
- Venue
- Journal of Range Management
- Publisher
- JSTOR
- Published
- 1969-11
- Volume
- 22
- Issue
- 6
- Pages
- 396
- ISSN
- 0022-409X (ISSN-L)
- OpenAlex
- W2516966838
- Cited by
- 305
- References
- 0
- FWCI
- 6.02
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: The Piosphere: Sheep Track and Dung Patterns. https://app.cochat.ai/papers/10.2307/3895849
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- Lange, R. T. (1969). The Piosphere: Sheep Track and Dung Patterns. Journal of Range Management. https://doi.org/10.2307/3895849
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
