QQ客服 官方微博 反馈留言

	Can excluding non-insect taxa from stream macroinvertebrate surveys enhance the sensitivity of taxonomic distinctness indices to human disturbance?
	Jiang, Xiaoming1; Song, Zhuoyan1,2; Xiong, Jing1; Xie, Zhicai1
刊名	ECOLOGICAL INDICATORS
	2014-06-01
卷号	41期号:-页码:175-182
关键词	Land use Water quality Taxonomic distinctness indices Stream macroinvertebrates Insects Central Chinese streams
ISSN号	1470-160X
通讯作者	Xie, ZC (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China.
中文摘要	Taxonomic distinctness (TD) indices are increasingly recognized as promising measures of diversity for assessing the quality of aquatic ecosystems. TD indices have a number of desirable properties due to their insensitivity to variations caused by sampling settings (e.g. sampling size and sampling efforts) and natural habitat types. But which TD indices are effective at determining anthropogenic effects is currently under debate. Here, we address this issue by calculating average taxonomic distinctness (Delta(+)) and variation in taxonomic distinctness (Delta(+)), the two aspects of TD indices considered to be the most powerful ecological indicators, using datasets of entire macroinvertebrate assemblages, insect-only assemblages and EPT taxa obtained from central Chinese running-water habitats. We examined the performances of TD indices based on the three datasets as ecological indicators in detecting anthropogenic stress, and tested the relationships between three Delta(+) and environmental variables including land use and water quality. We found that they were all weakly correlated with traditional diversity indices. In distinguishing reference and disturbed sites, Delta(+) of insect taxa performed much better than Delta(+) of the entire macroinvertebrate and EPT dataset. In general, three Delta(+) were related to land-use and water-quality variables, but particular environmental variables accounting for Delta(+) were quite different in three datasets. The Delta(+) of insect taxa responded more readily to anthropogenic stress than did that of all macroinvertebrate and EFT taxa. We argue that the widespread distribution of some tolerant non-insect taxa (Oligochaeta and Mollusca) in impaired sites but absence in reference sites adds too much "noisy" information for the entire-taxa TD index to distinguish man-made variation from natural variation. Moreover, using only EPT taxa resulted in lowering the sensitivity of Delta(+) because too few taxa at species or higher taxonomic levels were available. Thus, we propose that Delta(+) of insect taxa may be a more effective biodiversity measure for estimating anthropogenic disturbance on stream macroinvertebrate assemblages. (C) 2014 Elsevier Ltd. All rights reserved.
英文摘要	Taxonomic distinctness (TD) indices are increasingly recognized as promising measures of diversity for assessing the quality of aquatic ecosystems. TD indices have a number of desirable properties due to their insensitivity to variations caused by sampling settings (e.g. sampling size and sampling efforts) and natural habitat types. But which TD indices are effective at determining anthropogenic effects is currently under debate. Here, we address this issue by calculating average taxonomic distinctness (Delta(+)) and variation in taxonomic distinctness (Delta(+)), the two aspects of TD indices considered to be the most powerful ecological indicators, using datasets of entire macroinvertebrate assemblages, insect-only assemblages and EPT taxa obtained from central Chinese running-water habitats. We examined the performances of TD indices based on the three datasets as ecological indicators in detecting anthropogenic stress, and tested the relationships between three Delta(+) and environmental variables including land use and water quality. We found that they were all weakly correlated with traditional diversity indices. In distinguishing reference and disturbed sites, Delta(+) of insect taxa performed much better than Delta(+) of the entire macroinvertebrate and EPT dataset. In general, three Delta(+) were related to land-use and water-quality variables, but particular environmental variables accounting for Delta(+) were quite different in three datasets. The Delta(+) of insect taxa responded more readily to anthropogenic stress than did that of all macroinvertebrate and EFT taxa. We argue that the widespread distribution of some tolerant non-insect taxa (Oligochaeta and Mollusca) in impaired sites but absence in reference sites adds too much "noisy" information for the entire-taxa TD index to distinguish man-made variation from natural variation. Moreover, using only EPT taxa resulted in lowering the sensitivity of Delta(+) because too few taxa at species or higher taxonomic levels were available. Thus, we propose that Delta(+) of insect taxa may be a more effective biodiversity measure for estimating anthropogenic disturbance on stream macroinvertebrate assemblages. (C) 2014 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biodiversity Conservation ; Environmental Sciences
研究领域[WOS]	Biodiversity & Conservation ; Environmental Sciences & Ecology
关键词[WOS]	ANTHROPOGENIC IMPACTS ; LAND-USE ; BIODIVERSITY ; WATER ; COMMUNITIES ; DIVERSITY ; ORGANISMS ; GRADIENTS ; RESPONSES ; PATTERNS
收录类别	SCI
资助信息	FEBL [2013FB06]; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270]
语种	英语
WOS记录号	WOS:000334822200020
公开日期	2014-08-07
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/19989]
专题	水生生物研究所_水生生物多样性与资源保护研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada
推荐引用方式 GB/T 7714	Jiang, Xiaoming,Song, Zhuoyan,Xiong, Jing,et al. Can excluding non-insect taxa from stream macroinvertebrate surveys enhance the sensitivity of taxonomic distinctness indices to human disturbance?[J]. ECOLOGICAL INDICATORS,2014,41(-):175-182.
APA	Jiang, Xiaoming,Song, Zhuoyan,Xiong, Jing,&Xie, Zhicai.(2014).Can excluding non-insect taxa from stream macroinvertebrate surveys enhance the sensitivity of taxonomic distinctness indices to human disturbance?.ECOLOGICAL INDICATORS,41(-),175-182.
MLA	Jiang, Xiaoming,et al."Can excluding non-insect taxa from stream macroinvertebrate surveys enhance the sensitivity of taxonomic distinctness indices to human disturbance?".ECOLOGICAL INDICATORS 41.-(2014):175-182.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。