Literaturdatenbank
Literaturdatenbank |
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Mason, M. C., Kerley, G. I. H., Weatherby, C. A., & Branch, W. R. (2000). Angulate and leopard tortoises in the thicket biome, eastern cape, south africa: populations and biomass estimates. African Journal of Ecology, 38(2), 147.
Added by: Admin (17 Aug 2008 18:17:21 UTC) |
| Resource type: Journal Article BibTeX citation key: Mason2000 View all bibliographic details  |
Categories: General Keywords: Chersina, Chersina angulata, Geochelone, Habitat = habitat, Schildkröten = turtles + tortoises, Stigmochelys, Stigmochelys pardalis, Südafrika = Southern Africa, Testudinidae Creators: Branch, Kerley, Mason, Weatherby Collection: African Journal of Ecology |
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| Abstract |
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Testudinidae Geochelone pardalis Chersina angulata The population parameters (morphometrics, population size and biomass) were determined for leopard and angulate tortoises in the Thicket Biome, Eastern Cape, South Africa. Leopard tortoises had a mean total length of 306.47mm (SD = 94.65mm, range 59-496mm,n = 89). Males were smaller (mean total length 277.31mm, SD = 71.85mm, range 73-377mm,n = 36) than females (mean total length = 332.33mm, SD = 97.64mm, range 59-496mm, n = 53). Angulate tortoises had a mean total length of 155.17mm (SD = 33.89mm, range 59-194mm, n = 18). Males were larger (mean total length = 186mm, SD = 8.40mm, range 174-194mm, n = 5) than females (mean total length = 143.31mm, SD = 32.48mm, range 59-178mm, n = 13). The estimated population density for leopard tortoises was 0.85 tortoises ha1 with an estimated biomass of 6.02kg 1. Angulate tortoise population density was estimated at 0.12 tortoises ha1 with a mean biomass of 0.06kg ha1. The possible consequences of this high density and biomass are discussed.
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