scholarly journals Reduction in the phytoplankton index of biotic integrity in riverine ecosystems driven by industrial activities, dam construction and mining: A case study in the Ganjiang River, China

2021 ◽  
Vol 120 ◽  
pp. 106907
Author(s):  
Bing Feng ◽  
Meng Zhang ◽  
Jianfeng Chen ◽  
Jun Xu ◽  
Bangding Xiao ◽  
...  
Keyword(s):  
Index Of Biotic Integrity ◽  
Biotic Integrity ◽  
Dam Construction ◽  
Industrial Activities ◽  
Riverine Ecosystems

Spatio-temporal macroinvertebrate multi-index of biotic integrity (MMiBI) for a coastal river basin: a case study of River Tana, Kenya

2017 ◽  
Vol 17 (2) ◽  
pp. 113-124 ◽  
Author(s):  
Christopher Mulanda Aura ◽  
Edward Kimani ◽  
Safina Musa ◽  
Rodrick Kundu ◽  
James M. Njiru
Keyword(s):  
River Basin ◽  
Index Of Biotic Integrity ◽  
Biotic Integrity ◽  
Multi Index ◽  
Spatio Temporal ◽  
Coastal River

Development of an Index of Biotic Integrity for the Mid-Atlantic Highlands Region

2001 ◽  
Vol 130 (5) ◽  
pp. 857-877 ◽  
Author(s):  
Frank H. McCormick ◽  
Robert M. Hughes ◽  
Philip R. Kaufmann ◽  
David V. Peck ◽  
John L. Stoddard ◽  
...  
Keyword(s):  
Index Of Biotic Integrity ◽  
Biotic Integrity

scholarly journals Effect of environmental quality and mesohabitat structure on a Biotic Integrity Index based on fish assemblages of cerrado streams from Rio Cuiabá basin, Brazil

2011 ◽  
Vol 71 (3) ◽  
pp. 577-586 ◽  
Author(s):  
NG Machado ◽  
EM. Venticinque ◽  
J. Penha
Keyword(s):  
Environmental Quality ◽  
Fish Assemblages ◽  
Index Of Biotic Integrity ◽  
Biotic Integrity ◽  
Spearman Correlation ◽  
Aquatic Habitats ◽  
Integrity Index ◽  
Negative Impacts ◽  
Composition Structure ◽  
Biotic Integrity Index

Over the last 30 years, the Cerrado has been experiencing various antropic impacts that have brought about alterations to species composition, structure and functioning of aquatic habitats. Therefore, studies on negative impacts are useful to prevent future damage and restore environmental quality. The objectives of our study were: i) to adapt an index of biotic integrity of streams in the Rio Cuiabá Basin and ii) to analyze if the Index of Biotic Integrity (IBI) correlated with the environmental quality measured by the Index of Environmental Quality (IEQ) and with the mesohabitat structure. We sampled 26 streams in sub-basins of the Cuiabá River. In each stream, we closed a stretch of 50 m with blockage nets and used electrofishing to capture fish. To obtain a measure of environmental quality in sampled units, we characterized the stream and its micro basin. For the analyses, we used the Spearman Correlation, Kruskal-Wallis test and Analysis of Multiple Regression. We collected 697 individuals distributed into 6 orders, 15 families and 49 species. The IBI followed changes on environmental quality measured by IEQ when we removed streams that present natural barriers from the analysis (r² = 0.4; r² = 0.58). Types of land use did not affect the biotic integrity (n = 26; df = 4; H = 4,860; p = 0.302), but natural and artificial barriers affected it (n = 26; df = 4; H = 11,027; p = 0.026). The IBI was not sensitive to variations in mesohabitat structure (F2,23 = 0.373; r² = 0.031; Axe 1 p = 0.620; Axe 2 p = 0.490). The IBI is certainly a reasonable instrument for evaluating changes in the environment, but we cannot ignore the fact that we were able to obtain the same result with any combinations of metrics. This makes its analysis and interpretation difficult.

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