Arid
DOI10.1002/ece3.4649
Ensemble approach for potential habitat mapping of invasive Prosopis spp. in Turkana, Kenya
Ng, Wai-Tim1; de Oliveira Silva, Alexsandro Candido2; Rima, Purity3,4; Atzberger, Clement1; Immitzer, Markus1
通讯作者Ng, Wai-Tim
来源期刊ECOLOGY AND EVOLUTION
ISSN2045-7758
出版年2018
卷号8期号:23页码:11921-11931
英文摘要

Aim Prosopis spp. are an invasive alien plant species native to the Americas and well adapted to thrive in arid environments. In Kenya, several remote-sensing studies conclude that the genus is well established throughout the country and is rapidly invading new areas. This research aims to model the potential habitat of Prosopis spp. by using an ensemble model consisting of four species distribution models. Furthermore, environmental and expert knowledge-based variables are assessed. Location Turkana County, Kenya. Methods We collected and assessed a large number of environmental and expert knowledge-based variables through variable correlation, collinearity, and bias tests. The variables were used for an ensemble model consisting of four species distribution models: (a) logistic regression, (b) maximum entropy, (c) random forest, and (d) Bayesian networks. The models were evaluated through a block cross-validation providing statistical measures. Results The best predictors for Prosopis spp. habitat are distance from water and built-up areas, soil type, elevation, lithology, and temperature seasonality. All species distribution models achieved high accuracies while the ensemble model achieved the highest scores. Highly and moderately suitable Prosopis spp. habitat covers 6% and 9% of the study area, respectively. Main conclusions Both ensemble and individual models predict a high risk of continued invasion, confirming local observations and conceptions. Findings are valuable to stakeholders for managing invaded area, protecting areas at risk, and to raise awareness.


英文关键词ensemble modeling expert knowledge invasive alien species Prosopis species distribution modeling
类型Article
语种英语
国家Austria ; Brazil ; Kenya
收录类别SCI-E
WOS记录号WOS:000454107200046
WOS关键词SPECIES DISTRIBUTION MODELS ; ALIEN PLANT ; MESQUITE ; DISTRIBUTIONS ; ENVIRONMENTS ; EQUILIBRIUM ; MANAGEMENT ; RESOLUTION ; IMPACT ; COSTS
WOS类目Ecology ; Evolutionary Biology
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208815
作者单位1.Univ Nat Resources & Life Sci BOKU, Inst Surveying Remote Sensing & Land Informat IVF, Vienna, Austria;
2.Natl Inst Space Res INPE, Image Proc Div DPI, Ave Astronautas, Sao Jose Dos Campos, Brazil;
3.Kenya Forestry Res Inst KEFRI, Baringo Sub Ctr, Marigat, Kenya;
4.Chuka Univ, Dept Geog, Fac Arts & Humanities, Chuka, Kenya
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Ng, Wai-Tim,de Oliveira Silva, Alexsandro Candido,Rima, Purity,et al. Ensemble approach for potential habitat mapping of invasive Prosopis spp. in Turkana, Kenya[J],2018,8(23):11921-11931.
APA Ng, Wai-Tim,de Oliveira Silva, Alexsandro Candido,Rima, Purity,Atzberger, Clement,&Immitzer, Markus.(2018).Ensemble approach for potential habitat mapping of invasive Prosopis spp. in Turkana, Kenya.ECOLOGY AND EVOLUTION,8(23),11921-11931.
MLA Ng, Wai-Tim,et al."Ensemble approach for potential habitat mapping of invasive Prosopis spp. in Turkana, Kenya".ECOLOGY AND EVOLUTION 8.23(2018):11921-11931.
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