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The Allometry of Food Intake in Grazing Ruminants
Abstract
(1) A simulation model of grazing mechanics in ruminants shows that, due to the allometric relations of bite size and metabolic requirements to body size, small animals are able to subsist on shorter swards than large animals. (2) The density of nutrients in the grazed horizon of the modelled swards markedly affected the ability of animals of a given body size to satisfy their energy requirements. (3) By extension, the allometric relationships would be expected to apply in selective grazing and browsing species in their choice of food items of different size and nutrient content. (4) The results support the argument that sexual segregation and habitat choice of dimorphic species is an effect of scramble competition for limited resources, the males thus being excluded from mutually preferred swards. (5) The model provides an explanation for two interspecific phenomena amongst grazers: grazing succession and grazing facilitation.
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Albon, S. D., & Langvatn, R. (1992) · Oikos · doi:10.2307/3545568 · Cited by 489
Sexual Segregation in Ungulates: New Directions for Research
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Metadata
- Authors
- Illius, A. W., & Gordon, I. J.
- Venue
- The Journal of Animal Ecology
- Publisher
- JSTOR
- Published
- 1987-10
- Volume
- 56
- Issue
- 3
- Pages
- 989
- ISSN
- 0021-8790 (ISSN-L)
- DOI
- 10.2307/4961
- OpenAlex
- W2330584152
- Cited by
- 550
- References
- 0
- FWCI
- 10.47
- Type
- journal article
- Language
- en
- Open access
- closed
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- Illius, A. W., & Gordon, I. J. (1987). The Allometry of Food Intake in Grazing Ruminants. The Journal of Animal Ecology. https://doi.org/10.2307/4961
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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.
