Surface coal mining influences on macroinvertebrate assemblages in streams of the Canadian Rocky Mountains
| Autor: | Joseph B. Rasmussen, Kathryn A. Kuchapski |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
biology business.industry Ecology 010604 marine biology & hydrobiology Health Toxicology and Mutagenesis Coal mining Alkalinity STREAMS 15. Life on land 010501 environmental sciences biology.organism_classification 01 natural sciences Substrate (marine biology) 13. Climate action Environmental Chemistry Environmental science Capniidae Ordination Coal Species richness business 0105 earth and related environmental sciences |
| Zdroj: | Environmental Toxicology and Chemistry. 34:2138-2148 |
| ISSN: | 0730-7268 |
| DOI: | 10.1002/etc.3052 |
| Popis: | To determine the region-specific impacts of surface coal mines on macroinvertebrate community health, chemical and physical stream characteristics and macroinvertebrate family and community metrics were measured in surface coal mine-affected and reference streams in the Canadian Rocky Mountains. Water chemistry was significantly altered in mine-affected streams, which had elevated conductivity, alkalinity, and selenium and ion concentrations compared with reference conditions. Multivariate redundancy analysis (RDA) indicated alterations in macroinvertebrate communities downstream of mine sites. In RDA ordination, Ephemeroptera family densities, family richness, Ephemeroptera, Plecoptera, Trichoptera (EPT) richness, and % Ephemeroptera declined, whereas densities of Capniidae stoneflies increased along environmental gradients defined by variables associated with mine influence including waterborne Se concentration, alkalinity, substrate embeddedness, and interstitial material size. Shifts in macroinvertebrate assemblages may have been the result of multiple region-specific stressors related to mining influences including selenium toxicity, ionic toxicity, or stream substrate modifications. |
| Databáze: | OpenAIRE |
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