Uniqueness measure based on the weighted trophic field overlap of species in the food web

doi:10.1016/j.ecolind.2019.01.042

	Uniqueness measure based on the weighted trophic field overlap of species in the food web
	Xiao, Zitao 1,3; Wu, Jiaying 1; Xu, Binduo 1; Zhang, Chongliang 1; Ren, Yiping 1,2; Xue, Ying 1
	2019-06-01
发表期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
卷号	101 页码:640-646
通讯作者	Xue, Ying(xueying@ouc.edu.cn)
摘要	With the application of the topological network concept to study food webs, species uniqueness in terms of irreplaceability has begun to be considered when identifying important species in the ecosystem. Based on the uniqueness method of quantifying the interactions and trophic field overlap of species in food webs, we propose using the weighted trophic field overlap (WTO) to determine the uniqueness of species in a topological network by considering the proportions of prey in the diets of predators. This proposed method involves measuring the uniqueness of species structurally and mathematically to overcome the deficiencies of the traditional method (the sum of trophic field overlap, STO), which only relies on the topological structure of the food web. We compared the species ranking results obtained via the WTO and STO methods using the Wilcoxon signed-rank test and compared the Spearman rank correlation coefficients between them and three other topological indices. In this study, we focused on the food web of Haizhou Bay ecosystem. The results showed that Leptochela gracilis, Acetes sp., Alpheus japonicus, Engraulis japonicus, and Alpheus distinguendus were the most unique species in the food web of Haizhou Bay. They had the lowest WTO values, and three of these species were not identified as unique by the traditional method. However, they play important roles as prey in Haizhou Bay ecosystem and have high interaction strengths with other species in the food web weighted by the proportion of prey, which are not recognized by the traditional method. The proposed index is sensitive to changes in the diets of predators since slight fluctuations may cause the index to vary considerably. The proposed methodology could be extended to other marine ecosystems to identify unique species from a practical and dynamic perspective and will contribute to the protection of unique species that maintain the trophic diversity of food webs and ecosystem robustness.
关键词	Food web Keystone species Uniqueness Weighted trophic field overlap Topological network
DOI	10.1016/j.ecolind.2019.01.042
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[31772852] ; National Key R&D Program of China[2017YFE0104400] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2018SDKJ0501-2] ; National Natural Science Foundation of China[31772852] ; National Key R&D Program of China[2017YFE0104400] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2018SDKJ0501-2]
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:000470963300065
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/161575
专题	海洋生态与环境科学重点实验室
通讯作者	Xue, Ying
作者单位	1.Ocean Univ China, Coll Fisheries, Qingdao 266003, Shandong, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Xiao, Zitao,Wu, Jiaying,Xu, Binduo,et al. Uniqueness measure based on the weighted trophic field overlap of species in the food web[J]. ECOLOGICAL INDICATORS,2019,101:640-646.
APA	Xiao, Zitao,Wu, Jiaying,Xu, Binduo,Zhang, Chongliang,Ren, Yiping,&Xue, Ying.(2019).Uniqueness measure based on the weighted trophic field overlap of species in the food web.ECOLOGICAL INDICATORS,101,640-646.
MLA	Xiao, Zitao,et al."Uniqueness measure based on the weighted trophic field overlap of species in the food web".ECOLOGICAL INDICATORS 101(2019):640-646.

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