Metal and metalloid concentrations in the livers of Eurasian otter (Lutra lutra) from England and Wales

Dataset includes dry weight concentrations of 18 toxic, essential and trace elements quantified in the livers of otters that have been found dead in England and Wales between 2007 and 2009 inclusive. For each otter the month and year found, age, sex, body condition coefficient and location where the otter was found are given. Most elements were measured in 157 samples that came from the years 2007 to 2009. Residues of Pb were only measured in 107 samples from 2007 and 2008. 17 livers from 2009 were analysed for Ag. The data are used to quantify the magnitude of exposure to these elements in otters in relation to studies from across Europe and the likely toxicological significance of the residues found. This work has been carried out within the monitoring programme of the Predatory Bird Monitoring Scheme (PBMS) (https://pbms.ceh.ac.uk ), a long-term, national monitoring scheme that quantifies the concentrations of contaminants in the livers and eggs of selected species of predatory and fish-eating birds in Britain. The PBMS monitors the levels of contaminants to determine how and why they vary between species and regions, how they are changing over time, and the effects that they may have on individual birds and on their populations. The Predatory Bird Monitoring Scheme is run by the Centre for Ecology & Hydrology (CEH). This work was carried out in collaboration with the Cardiff University Otter Project. Full details about this dataset can be found at https://doi.org/10.5285/2effc7c4-82c8-4000-af8d-fdf82b1c3192

本数据集收录了2007年至2009年期间在英国和威尔士发现的死海狸肝脏中检测到的18种有毒、必需和微量元素的干重浓度。对于每一只海狸，提供了发现月份、年份、年龄、性别、体况系数以及发现地点等信息。大多数元素是在2007年至2009年间采集的157个样本中测定的。Pb残留物仅在2007年和2008年的107个样本中进行了测量。2009年分析了17个肝脏样本中的Ag。这些数据用于量化海狸对这些元素的暴露程度，并与欧洲各地的相关研究进行比较，以评估所发现残留物的潜在毒理学意义。该研究是在捕食鸟监测计划（Predatory Bird Monitoring Scheme，PBMS）的监控框架下进行的，PBMS是一项长期的国家监测计划，旨在量化英国选定捕食性和食鱼鸟类肝脏和蛋中的污染物浓度。PBMS监测污染物水平，以确定其在不同物种和地区之间以及随时间的变化情况，以及它们可能对单个鸟类及其种群产生的影响。捕食鸟监测计划由生态与水文中心（Centre for Ecology & Hydrology，CEH）负责运行。此项工作与卡迪夫大学海狸项目合作完成。关于此数据集的详细信息可在以下链接找到：https://doi.org/10.5285/2effc7c4-82c8-4000-af8d-fdf82b1c3192。