Mining and urbanization affect river chemical water quality and macroinvertebrate communities in the upper Selenga River basin, Mongolia (revised version)
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| Titel: | Mining and urbanization affect river chemical water quality and macroinvertebrate communities in the upper Selenga River basin, Mongolia (revised version) |
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| Autoren: | Dashdondog Narangarvuu, Tuuguu Enkhdul, Erdenesukh Erdenetsetseg, Enkhbat Enkhrii-Ujin, Khurtsbaatar Irmuunzaya, Gunsmaa Batbayar, Khurelpurev Oyundelger, Rita Sau-Wai Yam, Martin Pfeiffer |
| Quelle: | Environ Monit Assess |
| Verlagsinformationen: | Springer Science and Business Media LLC, 2024. |
| Publikationsjahr: | 2024 |
| Schlagwörter: | Rivers, Research, Water Quality, Metals, Heavy, Urbanization, Animals, Water Pollutants, Chemical/analysis [MeSH], Metals, Heavy/analysis [MeSH], Rivers/chemistry [MeSH], Bioindicators, Mongolia, Metal pollution, Water Quality [MeSH], Animals [MeSH], Biotic index, Mining [MeSH], Ephemeroptera-Plecoptera-Trichoptera (EPT) complex, Mongolia [MeSH], Environmental Monitoring/methods [MeSH], Invertebrates [MeSH], Urbanization [MeSH], Invertebrates, Mining, Water Pollutants, Chemical, Environmental Monitoring |
| Beschreibung: | Mongolia is a country with a quickly growing economy mainly based on the mining of gold, copper, coal, and other minerals. Mining, urbanization, and agriculture impact the water quality in the upper Selenga River basin in northern Mongolia, which is the center of the Mongolian economy. Previous measurements of pollution loads were alarming, but restricted to chemical measurements. Here, for the first time, we combine freshwater biomonitoring and laboratory water quality data across a broad gradient of water quality and land use intensity. We track the effects of different types of pollution on aquatic invertebrates and test their use as bioindicators. We collected water samples, environmental parameters, and macroinvertebrates at 36 sampling sites at the rivers of Tuul, Kharaa, and Orkhon and their tributaries Sugnugur, Boroo, Sharyn Gol, Gatsuurt, and Yeröö. PCA of catchment water quality distinguished three groups of pollutants prevalent at the sites, (1) nutrients, (2) salt ions (Cl−, Na+, Mg2+, So42−, Ca2+) and mining by-products (B, Sr, U, Mo), and (3) (heavy) metals, which often exceeded regulatory standards. We recorded a total of 59 macroinvertebrate taxa belonging to 31 families in seven insect orders plus Amphipoda and Gastropoda. Species diversity declined with higher impact. Five environmental factors structured macroinvertebrate community composition in RDA: elevation of sample location, site total nitrogen, dissolved oxygen, electrical conductivity, and water chemistry. We conclude that macroinvertebrate communities are an appropriate and inexpensive tool for monitoring water quality in Mongolia and suggest government action to establish a long-term monitoring program. |
| Publikationsart: | Article Other literature type |
| Sprache: | English |
| ISSN: | 1573-2959 0167-6369 |
| DOI: | 10.1007/s10661-024-13225-6 |
| Zugangs-URL: | https://pubmed.ncbi.nlm.nih.gov/39436469 https://repository.publisso.de/resource/frl:6509543 |
| Rights: | CC BY |
| Dokumentencode: | edsair.doi.dedup.....d13145ce8e5672c11bc85be0cba331b4 |
| Datenbank: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstract: | Mongolia is a country with a quickly growing economy mainly based on the mining of gold, copper, coal, and other minerals. Mining, urbanization, and agriculture impact the water quality in the upper Selenga River basin in northern Mongolia, which is the center of the Mongolian economy. Previous measurements of pollution loads were alarming, but restricted to chemical measurements. Here, for the first time, we combine freshwater biomonitoring and laboratory water quality data across a broad gradient of water quality and land use intensity. We track the effects of different types of pollution on aquatic invertebrates and test their use as bioindicators. We collected water samples, environmental parameters, and macroinvertebrates at 36 sampling sites at the rivers of Tuul, Kharaa, and Orkhon and their tributaries Sugnugur, Boroo, Sharyn Gol, Gatsuurt, and Yeröö. PCA of catchment water quality distinguished three groups of pollutants prevalent at the sites, (1) nutrients, (2) salt ions (Cl−, Na+, Mg2+, So42−, Ca2+) and mining by-products (B, Sr, U, Mo), and (3) (heavy) metals, which often exceeded regulatory standards. We recorded a total of 59 macroinvertebrate taxa belonging to 31 families in seven insect orders plus Amphipoda and Gastropoda. Species diversity declined with higher impact. Five environmental factors structured macroinvertebrate community composition in RDA: elevation of sample location, site total nitrogen, dissolved oxygen, electrical conductivity, and water chemistry. We conclude that macroinvertebrate communities are an appropriate and inexpensive tool for monitoring water quality in Mongolia and suggest government action to establish a long-term monitoring program. |
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| ISSN: | 15732959 01676369 |
| DOI: | 10.1007/s10661-024-13225-6 |