Trace element proxies and stable isotopes used to identify water quality threats to elkhorn coral (Acropora palmata) at two national parks in St. Croix, USVI
| Autor: | Colleen E. Bryan, Steven J. Christopher, C. Anna Toline, Jennifer Ness, Amanda L. Bayless, Cheryl M. Woodley, Russell D. Day |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Coral Parks Recreational 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences United States Virgin Islands Isotopes Metals Heavy Water Quality Acropora Animals Reef 0105 earth and related environmental sciences Invertebrate geography geography.geographical_feature_category biology Ecology Coral Reefs 010604 marine biology & hydrobiology Trace element δ15N biology.organism_classification Elkhorn coral Anthozoa Pollution Trace Elements Environmental science Water quality Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Marine pollution bulletin. 169 |
| ISSN: | 1879-3363 |
| Popis: | Biological impairments have been documented on reefs at two national parks in St. Croix, USVI. Although several water quality parameters have been out of compliance with USVI criteria, whether these parameters or other pollutants are responsible for coral health impacts is unknown. Trace elements quantified in sediment showed four sites at SARI, which is closer than BUIS to settlements and land-derived anthropogenic outflows, had Cu mass fractions above sediment quality guidelines for invertebrate toxicity. Trace elements were also analyzed in the skeleton of threatened elkhorn coral, Acropora palmata, to evaluate potential exposure. Heavy metals (Pb, Zn) were significantly greater in coral skeleton at SARI than BUIS. Cu, Pb, and Zn may be impacting coral health in these parks. Potential anthropogenic sources of these metals were revealed by the coral tissue stable isotope levels (δ13C and δ15N). These findings provide a framework for determining heavy metal impacts on these invaluable reefs. |
| Databáze: | OpenAIRE |
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