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

doi:10.1016/j.ecolind.2019.01.042

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	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
刊名	ECOLOGICAL INDICATORS
	2019-06-01
卷号	101 页码:640-646
关键词	Food web Keystone species Uniqueness Weighted trophic field overlap Topological network
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2019.01.042
通讯作者	Xue, Ying(xueying@ouc.edu.cn)
英文摘要	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.
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]
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470963300065
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/161574]
专题	海洋研究所_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
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.