Diatoms as indicators of environmental health on Korean islands
| Autor: | Lalit K. Pandey, Elizabeth A. Bergey, Taejun Han, Jihae Park |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Pollution
China Geologic Sediments Health Toxicology and Mutagenesis media_common.quotation_subject 010501 environmental sciences Aquatic Science 01 natural sciences Risk Assessment 03 medical and health sciences Metals Heavy Biomonitoring Republic of Korea Dominance (ecology) Periphyton 030304 developmental biology 0105 earth and related environmental sciences media_common Diatoms Islands 0303 health sciences biology Ecology business.industry fungi Agriculture Mercury biology.organism_classification Diatom Navicula Environmental science business Bioindicator Environmental Health Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Aquatic toxicology (Amsterdam, Netherlands). 227 |
| ISSN: | 1879-1514 |
| Popis: | Diatoms are highly sensitive to perturbations in their environment and are thus useful as bioindicators for anthropogenic impacts such as pollution. However, there is no consensus about what aspects of diatom populations to measure (e.g., diversity, physiology, or morphology) and efficient and reliable survey protocols are lacking. Here, we evaluated the ecological status of diatom communities using both traditional and relatively novel methods on two islands (Deokjeok island and Daeijak island) affected by anthropogenic activities due to extensive agricultural practices and exploitation and that are under consideration for representative touristic sites in South Korea. Dissolved concentrations of metals and metalloid (As, Cu, Cr, Cd, Ni, Hg, Pb, and Zn) were below the ecological screening and toxicity reference values in water fractions but were above these values for sediment, particularly at one island, Deokjeok. The tested methods were generally consistent in finding little evidence for disruption of diatom communities, with dominance by Navicula and Gyrosigma, relatively high diversity, and typical abundance of lipid bodies and morphological deformities. However, analysis of lipid bodies and morphological deformities suggested greater potential anthropogenic disturbance at one site in Deokjeok. Future planning is required to ensure the maintenance of the near-pristine environments present on these islands. |
| Databáze: | OpenAIRE |
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