Development of a phytoplankton-based index of biotic integrity for ecological health assessment in the Yangtze River

Gao, Wenqi; Xiong, Fangyuan; Lu, Ying; Qu, Xiao; Xin, Wei; Chen, Yushun

doi:10.1186/s13717-023-00456-7

Ecological Processes

Table 1 Candidate metrics of phytoplankton index of biotic integrity (P-IBI) for the middle and lower reaches of the Yangtze River, China

From: Development of a phytoplankton-based index of biotic integrity for ecological health assessment in the Yangtze River

Category	Candidate metric	Code	Expected response to disturbance	References
Density	Number of total species	M1	Decreased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Number of Cyanophyta species	M2	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Number of Chlorophyta species	M3	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Number of Bacillariophyta species	M4	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Cyanophyta species %	M5	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Chlorophyta species %	M6	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Bacillariophyta species %	M7	Decreased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Total density	M8	Increased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Cyanophyta density	M9	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Chlorophyta density	M10	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Bacillariophyta density	M11	Decreased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Dominant species density %	M12	Increased	Zhu et al. (2021), Hu et al. (2022)
	Cyanophyta density %	M13	Increased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Chlorophyta density %	M14	Increased	Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Bacillariophyta density %	M15	Decreased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Total density composed of Cyanophyta and Chlorophyta %	M16	Increased	Zhang et al. (2020)
	Total density composed of Bacillariophyta and Chlorophyta %	M17	Decreased	Tan et al. (2017), Zhang et al. (2020)
Diversity index	Shannon–Wiener index	M18	Decreased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Margalef index	M19	Decreased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Pielou index	M20	Decreased	Tan et al. (2017), Feng et al. (2021), Zhu et al. (2021), Hu et al. (2022)
	Simpson index	M21	Decreased	Zhu et al. (2021), Hu et al. (2022)
Biomass	Total biomass	M22	Increased	Tan et al. (2017), Zhu et al. (2021)
	Top three dominant species biomass	M23	Increased	Zhu et al. (2021)
	Cyanophyta biomass	M24	Increased	Zhu et al. (2021)
	Chlorophyta biomass	M25	Increased	Zhu et al. (2021)
	Bacillariophyta biomass	M26	Decreased	Zhu et al. (2021)
Trophic status	Diatom quotient	M27	Increased	Tan et al. (2017), Zhu et al. (2021)

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