Assessing anthropogenic pressure in the St. Lawrence River using traits of benthic macroinvertebrates

The Science of the Total Environment
Mélanie DesrosiersB Pinel-Alloul

Abstract

This study aims to evaluate the anthropogenic pressure in the St. Lawrence River by assessing the relationships between chemical contamination of sediments and benthic community structure with the trait-based approach. Organic and inorganic contaminants as well as other sediment variables (sediment grain size, total organic carbon, nutrients, etc.) and benthic invertebrate assemblages were determined in 59 sites along the river. Biological and ecological traits of taxa were coded, taking into account regional climate and ecosystem conditions. The aims of this study were to (1) describe the relationships between traits and macroinvertebrate taxa and identify homogeneous clusters of taxa with the same combinations of functional traits, (2) describe spatial patterns in traits of macroinvertebrates in the St. Lawrence River, (3) link trait-based metrics and site groups to sediment quality and (4) define a trait-based strategy for diagnosing the ecological quality of the St. Lawrence River. Seven groups of taxa sharing similar trait-category attributes were defined. Moreover, four groups of sites were identified using the 'K-mean' non-hierarchical clustering approach. The 'IndVal' method enabled us to specifically defined trait cate...Continue Reading

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Citations

Apr 10, 2021·Scientific Reports·Rassim KhelifaMichael J Samways
May 30, 2020·The Science of the Total Environment·Olivier DézeraldPhilippe Usseglio-Polatera
Apr 30, 2021·Environmental Monitoring and Assessment·Frank Chukwuzuoke AkamagwunaOghenekaro Nelson Odume
May 26, 2021·Environmental Science and Pollution Research International·Francis O ArimoroUnique N Keke
Aug 13, 2021·Environmental Pollution·Christopher H MarvinGregg T Tomy
Oct 10, 2021·Environmental Monitoring and Assessment·Augustine Ovie EdegbeneFrank Chukwuzuoke Akamagwuna
Oct 10, 2021·Environmental Science and Pollution Research International·Augustine Ovie Edegbene

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