Arid
DOI10.1016/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
ISSN0140-1963
EISSN1095-922X
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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