Assessment of Diatom Assemblages in Close Proximity to Mining Activities in Nunavik, Northern Quebec (Canada) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environments Année : 2019

Assessment of Diatom Assemblages in Close Proximity to Mining Activities in Nunavik, Northern Quebec (Canada)

Assemblages diatomiques dans la région minière du Nunavik, Québec, Canada

Résumé

Nunavik (Northern Quebec, Canada) is experiencing a mining boom. While several studies have been conducted in the region in relation to climate change, the effects of mining have received much less attention. In this study, we explored the use of biofilms in natural streams as an indicator of potential stress on living organisms caused by metal contamination from nickel mining activities. More specifically, we assessed diatom assemblages and the presence of teratologies (morphologic abnormalities) as a response to metals in streams located in close proximity to mining sites. Metal concentrations (as well as other cations), anions and pH values varied markedly among stations. Different diatom assemblage structures (four biotypes, i.e., groups of samples with similar diatom species composition) were observed depending on the level and the type of contamination. The frequency of diatom teratologies was higher in metal contaminated sites. The present study lays the foundation for bioassessment of metal contamination in low Arctic streams using diatom-based approaches, and will serve as a point in time reference for future evaluation of ecosystems degradation or recovery in Nunavik.
Fichier principal
Vignette du fichier
bx2019-pub00061740.pdf (1.18 Mo) Télécharger le fichier
Origine : Accord explicite pour ce dépôt
Loading...

Dates et versions

hal-02267390 , version 1 (19-08-2019)

Identifiants

Citer

I. Lavoie, Soizic Morin, V. Laderriere, L.E. Paris, C. Fortin. Assessment of Diatom Assemblages in Close Proximity to Mining Activities in Nunavik, Northern Quebec (Canada). Environments, 2019, 6 (6), pp.74. ⟨10.3390/environments6060074⟩. ⟨hal-02267390⟩

Collections

IRSTEA INRAE EABX
38 Consultations
73 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More