Non-modelled 10 day LC50 from rapid tests at Macquarie Island 2007/08

Rapid toxicity tests (Kefford et al. 2005) were used to test the sensitivity of a wide range of intertidal and shallow sub-tidal marine invertebrates collected off the northern end of Macquarie Island. The tests were 10 days long, with a water change at 4 days. Resulted in the data set are non-modelled LCx (concentrations lethal to x% of the test populations) values for Copper (Cu) 10 days of exposure.Kefford, B.J., Palmer, C.G., Jooste, S., Warne, M.St.J. and Nugegoda, D. (2005). What is it meant by '95% of species'? An argument for the inclusion of rapid tolerance testing. Human and Ecological Risk Assessment 11: 1025-1046.Invertebrates collected from a range of coastal waters off the northern end of Macquarie Island .The columns in the spreadsheet are as follows:Lowest ID = the lowest identification the taxa is ID to (can be species, genus, family, etc.)Group = major taxonomic group the taxa comes fromLetter = a convent identifier to split the taxa LC50 discpt = a string description of the10 day LC50 (lethal concentration for 50% of the test population)LC50 point estimate = a point estimate of the 10 day LC50 (lethal concentration for 50% of the test population)Cencor = indicates if the LC50 is right censored (that is greater than the value indicated in the point estimate) Case = a number to identify the recordProject Public Summary:Despite pollution concerns in Antarctic and southern oceans, there is little ecotoxicological data and none from the sub-Antarctic. Ecological risk assessments and water quality guidelines should use local data, especially in the polar environment as organisms may respond differently to pollutants. The sub-Antarctic is, however, between Antarctica and the temperate zone and in the absence of local data, it maybe appropriate to use temperate data. This project will assess how the sensitivity to metals of marine invertebrates varies latitudinally and in which region of the Antarctic, if at all, it is appropriate to use temperate data.

本研究采用Kefford等人（2005年）提出的快速毒性试验方法，对麦夸里岛北端周边采集的多种潮间带及浅亚潮带海洋无脊椎动物的污染物敏感性开展测试。试验周期为10天，于第4天进行一次换水操作。本数据集包含铜（Cu）暴露10天后的非模型拟合LCx值（即对试验种群x%个体具有致死效应的浓度）。

引用文献：Kefford, B.J.、Palmer, C.G.、Jooste, S.、Warne, M.St.J. 及 Nugegoda, D.（2005）。何为“95%的物种”？关于纳入快速耐受性试验的论证。《人类与生态风险评估》，11卷：1025-1046。

本试验所用无脊椎动物均采集自麦夸里岛北端周边的多个近海水域。

电子表格各字段说明如下：
1. 最低分类层级（Lowest ID）：该类群可被鉴定到的最低分类单元（可为种、属、科等）
2. 类群归属（Group）：该类群所属的一级分类类群
3. 分组标识（Letter）：用于拆分类群的常规标识符
4. LC50描述（LC50 description，原文拼写为LC50 discpt）：对10天LC50（即对50%试验种群具有致死效应的浓度）的文本说明
5. LC50点估计值（LC50 point estimate）：10天LC50的点估计结果
6. 右截尾标记（Cencor）：用于标记LC50是否为右截尾值（即该值大于点估计结果所标注的浓度）
7. 记录编号（Case）：用于标识单条试验记录的编号

项目公共摘要：
尽管南极及南大洋海域存在污染隐患，但目前相关生态毒理学数据极度匮乏，亚南极地区更是尚无相关数据。生态风险评估与水质导则应优先采用本地实测数据，尤其是在极地环境中，由于海洋生物对污染物的响应模式可能与温带生物存在差异，本地数据的适用性更强。然而亚南极地区地处南极洲与温带区域之间，在缺乏本地实测数据的前提下，或许可酌情采用温带地区的毒性数据。本项目旨在评估海洋无脊椎动物对金属污染物的敏感性随纬度的变化规律，并探究南极周边哪些区域可合理使用温带地区的毒性数据。