Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2017.04.001 |
Aspects of the home range ecology of the leopard tortoise in the semi-arid central Karoo: An area threatened with fracking | |
Drabik-Hamshare, Martyn; Downs, Colleen T. | |
通讯作者 | Downs, Colleen T. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2017 |
卷号 | 144页码:31-41 |
英文摘要 | Whilst tracking is used globally, impact studies on wildlife are limited. The semi-arid Karoo, South Africa, a large ecosystem with a high degree of endemism, is targeted for fracking. We investigated how adult leopard tortoises (Stigmochelys pardalis) use their environment by determining individual and seasonal variation in home range and effects of weather factors on these pre-fracking. Data were obtained from Global Positioning System (GPS) transmitters placed on leopard tortoises (n = 11) on private livestock farms near Beaufort West, South Africa for a year. Kernel density estimation (KDE) was used to estimate home range. Individuals had a mean (+/- SE) home range of 121.86 +/- 28.12 ha, (range 40.53-258.52 ha) with a core area of 76.55 +/- 17.33 ha (range 21.22-83.89 ha). No difference was found between annual male and female home ranges. Two telemetered individuals were excluded from analysis because they exhibited apparent nomadic behaviour. Several individuals did not visit permanent water sources, possibly suggesting that dietary water intake was sufficient. Generalised Linear Mixed Models were used to explain monthly home range estimates (95% KDEhref) in regards to biologically significant predictor variables. A single top model (Delta AIC(c) < 2) was produced, indicating importance of individual variability (sex, body mass) and weather (temperature, rainfall) variables. Our results provide baseline data pre-fracking in the region, and as such, should be repeated following commencement of fracking. (C) 2017 Elsevier Ltd. All rights reserved. |
英文关键词 | Tortoises Kernel density estimation Individual variation Movement ecology Hydraulic fracturing Stigmochelys pardalis |
类型 | Article |
语种 | 英语 |
国家 | South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000403999100004 |
WOS关键词 | STIGMOCHELYS-PARDALIS ; NAMA-KAROO ; MOVEMENT PATTERNS ; METABOLIC THEORY ; HABITAT ; SIZE ; POPULATION ; VEGETATION ; PACKAGE ; DESERT |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/200125 |
作者单位 | Univ KwaZulu Natal, Sch Life Sci, P Bag X01, ZA-3209 Pietermaritzburg, Kwazulu Natal, South Africa |
推荐引用方式 GB/T 7714 | Drabik-Hamshare, Martyn,Downs, Colleen T.. Aspects of the home range ecology of the leopard tortoise in the semi-arid central Karoo: An area threatened with fracking[J],2017,144:31-41. |
APA | Drabik-Hamshare, Martyn,&Downs, Colleen T..(2017).Aspects of the home range ecology of the leopard tortoise in the semi-arid central Karoo: An area threatened with fracking.JOURNAL OF ARID ENVIRONMENTS,144,31-41. |
MLA | Drabik-Hamshare, Martyn,et al."Aspects of the home range ecology of the leopard tortoise in the semi-arid central Karoo: An area threatened with fracking".JOURNAL OF ARID ENVIRONMENTS 144(2017):31-41. |
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