Detection and Prediction of Toxic Aluminum Concentrations in High-Priority Salmon Rivers in Nova Scotia.

IF 3.6 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Environmental Toxicology and Chemistry Pub Date : 2024-10-01 DOI:10.1002/etc.5997

Kristin A Hart, Benjamin Trueman, Edmund A Halfyard, Shannon M Sterling

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引用次数: 0

Abstract

Elevated concentrations of toxic cationic aluminum (Al_i) are symptomatic of terrestrial and freshwater acidification and are particularly toxic to salmonid fish species such as Atlantic salmon (Salmo salar). Speciated metal samples are rarely included in standard water monitoring protocols, and therefore the processes affecting Al_i dynamics in freshwater remain poorly understood. Previous analysis of Al_i concentrations in Nova Scotia (Canada) rivers found that the majority of study rivers had concentrations exceeding the threshold for aquatic health, but a wide-scale survey of Al_i in Nova Scotia has not taken place since 2006 (Dennis, I. F., & Clair, T. A., 2012, Canadian Journal of Fisheries and Aquatic Sciences, 69(7), 1174-1183). The observed levels of dissolved aluminum in Atlantic salmon (Salmo salar) rivers of Atlantic Canada have potential serious and harmful effects for aquatic populations. We present the findings of the first large-scale assessment of the Al_i status of Nova Scotia rivers in 17 years; we measured Al_i concentrations and other water chemistry parameters at 150 sites throughout the Southern Uplands region of Nova Scotia from 2015 to 2022. We found that Al_i concentrations exceeded toxic thresholds at least once during the study period at 80% of the study sites and that Al_i concentrations increased during the study period at all four large-sample study sites. Modeling of relationships between Al_i concentrations and other water chemistry parameters showed that the most important predictors of Al_i are concentrations of the dissolved fractions of Al, iron, titanium, and calcium, as well as dissolved organic carbon and fluoride. We developed a fully Bayesian linear mixed model to predict Al_i concentrations from a test data set within 15 μg/L. This model may be a valuable tool to predict Al_i concentrations in rivers and to prioritize areas where Al_i should be monitored. Environ Toxicol Chem 2024;00:1-12. © 2024 The Author(s). Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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新斯科舍省高优先级鲑鱼河流中有毒铝浓度的检测和预测。

有毒阳离子铝（Ali）浓度升高是陆地和淡水酸化的症状，对大西洋鲑鱼（Salmo salar）等鲑科鱼类尤其有毒。标准的水质监测方案中很少包含特定的金属样本，因此人们对影响淡水中铝（Ali）动态的过程仍然知之甚少。之前对新斯科舍省（加拿大）河流中的铝浓度进行的分析发现，大多数研究河流的铝浓度超过了水生健康阈值，但自 2006 年以来，新斯科舍省一直未对铝进行大规模调查（Dennis, I. F., & Clair, T. A., 2012, Canadian Journal of Fisheries and Aquatic Sciences, 69(7), 1174-1183）。在加拿大大西洋的大西洋鲑（Salmo salar）河流中观察到的溶解铝水平可能会对水生种群造成严重有害影响。我们介绍了 17 年来首次对新斯科舍省河流的铝含量状况进行大规模评估的结果；从 2015 年到 2022 年，我们在新斯科舍省南部高地地区的 150 个地点测量了铝浓度和其他水化学参数。我们发现，在研究期间，80% 的研究地点的阿里浓度至少有一次超过毒性阈值，而且在研究期间，所有四个大样本研究地点的阿里浓度都有所上升。阿里浓度与其他水化学参数之间的关系建模显示，阿里最重要的预测因子是铝、铁、钛和钙的溶解分量以及溶解有机碳和氟化物的浓度。我们建立了一个完全贝叶斯线性混合模型，以预测测试数据集中 15 μg/L 以内的阿里浓度。该模型可能是预测河流中阿里浓度和优先监测阿里区域的重要工具。环境毒物化学 2024;00:1-12。© 2024 The Author(s).环境毒理学与化学》由 Wiley Periodicals LLC 代表 SETAC 出版。

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来源期刊

Environmental Toxicology and Chemistry 环境科学-毒理学

CiteScore

7.40

自引率

9.80%

发文量

265

审稿时长

3.4 months

期刊介绍： The Society of Environmental Toxicology and Chemistry (SETAC) publishes two journals: Environmental Toxicology and Chemistry (ET&C) and Integrated Environmental Assessment and Management (IEAM). Environmental Toxicology and Chemistry is dedicated to furthering scientific knowledge and disseminating information on environmental toxicology and chemistry, including the application of these sciences to risk assessment.[...] Environmental Toxicology and Chemistry is interdisciplinary in scope and integrates the fields of environmental toxicology; environmental, analytical, and molecular chemistry; ecology; physiology; biochemistry; microbiology; genetics; genomics; environmental engineering; chemical, environmental, and biological modeling; epidemiology; and earth sciences. ET&C seeks to publish papers describing original experimental or theoretical work that significantly advances understanding in the area of environmental toxicology, environmental chemistry and hazard/risk assessment. Emphasis is given to papers that enhance capabilities for the prediction, measurement, and assessment of the fate and effects of chemicals in the environment, rather than simply providing additional data. The scientific impact of papers is judged in terms of the breadth and depth of the findings and the expected influence on existing or future scientific practice. Methodological papers must make clear not only how the work differs from existing practice, but the significance of these differences to the field. Site-based research or monitoring must have regional or global implications beyond the particular site, such as evaluating processes, mechanisms, or theory under a natural environmental setting.