10 year trend of levels of organochlorine pollutants in Antarctic seabirds

Metadata record for data from ASAC Project 2357 See the link below for public details on this project.---- Public Summary from Project ----Contaminants like PCBs and DDE have hardly been used Antarctica. Hence, this is an excellent place to monitor global background levels of these organochlorines. In this project concentrations in penguins and petrels will be compared to 10 years ago, which will show time trends of global background contamination levels.Data set descriptionFrom several birds from Hop Island, Rauer Islands near Davis, samples were collected from preenoil (oil that birds excrete to preen their feathers. This preenoil was then analysed for organochlorine pollutants like polychlorinated biphenyls, (PCBs), hexachlorobenzene (HCB), DDE and dieldrin. The species under investigation were the Adelie penguin (Pygoscelis adeliae) and the Southern Fulmar (Fulmarus glacialoides). The samples were collected from adult breeding birds, and stored in -20 degrees C as soon as possible. The analysis was done with relatively standard but very optimised methods, using a gas-chromatograph and mass-selective detection. Data sheets:The data are available in excel-sheets, located at Alterra, The Netherlands (the affiliation of the PI Nico van den Brink.). Data are available on PCB153 (polychlorinated biphenyl congener numbered 153), hexachlorobenzene (HCB), DDE (a metabolite of the pesticide DDT), and dieldrin (an insecticide).The metadata are in 4 sheets (in meta data 2357.xls):1. 'Concentrations fulmars'2. 'Morphometric data fulmars'3. 'Concentrations Adelies'4. 'Morphometric data Adelies'The column headings are: 1. 'Concentrations fulmars'- Fulmar: bird number, corresponds with sheet 'morphometric data fulmars'.- PCB153: concentration of PCB-congener 153 (ng/g lipids)- HCB: concentration of hexachlorobenzene (ng/g lipids)- DDE: concentration of DDE (ng/g lipids)- Dieldrin: concentration of dieldrin (ng/g lipids)- Sample size weight of collected amount of preenoil2. Morphometric data fulmars- Fulmar: bird number, corresponds with sheet 'Concentrations fulmars'. - Bill Length (mm): length of bill (tip to base)- Head Length (mm): length of head (tip of bill to back of head)- Tarsus (mm): length of tarsus- Wing Length (cm): length of right wing- Weight (kg): weight of bird (without bag)3. 'Concentrations Adelies'Adelie: bird number, corresponds with sheet 'morphometric data Adelies'.- PCB153: concentration of PCB-congener 153 (ng/g lipids)- HCB: concentration of hexachlorobenzene (ng/g lipids)- DDE: concentration of DDE (ng/g lipids)- Dieldrin: concentration of dieldrin (ng/g lipids)- Sample size weight of collected amount of preenoil4. 'Morphometric data Adelies'- Adelie: bird number, corresponds with sheet 'Concentrations Adelies'. - Bill (mm): length of bill (tip to base)- Head Length (mm): length of head (tip of bill to back of head)- Tarsus (mm): length of tarsus- Flipper Length (cm): length of right flipper (wing)- Weight (kg): weight of bird (without bag)In sheets on concentrations: less than d.l.: concentrations below detection limits.本元数据记录源自ASAC项目2357的相关数据，该项目的公开详情可参阅下述链接。---- 项目公开摘要 ---- 多氯联苯（PCBs）、二氯二苯二氯乙烯（DDE）等有机氯污染物早已极少在南极洲使用，因此南极洲是监测这类污染物全球背景水平的绝佳场所。本项目将对比当前与10年前企鹅与海燕体内的污染物浓度，以此揭示全球背景污染水平的时间变化趋势。数据集说明：研究人员从戴维斯站附近劳尔群岛的霍普岛采集了多种鸟类的羽脂（鸟类梳理羽毛时排出的油脂）样本，随后针对其中的有机氯污染物，包括多氯联苯（PCBs）、六氯苯（HCB）、二氯二苯二氯乙烯（DDE）以及狄氏剂开展分析。本次研究的受试物种为阿德利企鹅（Pygoscelis adeliae）和南方暴雪鹱（Fulmarus glacialoides）。样本均采集自成年繁殖个体，并在采集后尽快以-20℃低温保存。分析采用经过优化的常规标准方法，借助气相色谱仪与质谱选择检测器完成检测。数据表说明：数据集以Excel表格形式存储，现存放于荷兰阿尔特拉（Alterra）——项目首席研究员尼科·范登布林克（Nico van den Brink）的所属机构。公开数据涵盖PCB153（多氯联苯同系物153）、六氯苯（HCB）、二氯二苯二氯乙烯（DDE，农药滴滴涕的代谢产物）以及狄氏剂（一种杀虫剂）的相关检测结果。元数据存储于元数据文件meta data 2357.xls的4个工作表中：1. '暴雪鹱污染物浓度表'（Concentrations fulmars）2. '暴雪鹱形态学数据'（Morphometric data fulmars）3. '阿德利企鹅污染物浓度表'（Concentrations Adelies）4. '阿德利企鹅形态学数据'（Morphometric data Adelies）各工作表列标题说明如下：1. 暴雪鹱污染物浓度表（Concentrations fulmars）：- 暴雪鹱：鸟类编号，与'暴雪鹱形态学数据'工作表一一对应- PCB153：多氯联苯同系物153的浓度（ng/g 脂重）- HCB：六氯苯浓度（ng/g 脂重）- DDE：二氯二苯二氯乙烯浓度（ng/g 脂重）- 狄氏剂：狄氏剂浓度（ng/g 脂重）- 样本量：采集的羽脂样品重量2. 暴雪鹱形态学数据（Morphometric data fulmars）：- 暴雪鹱：鸟类编号，与'暴雪鹱污染物浓度表'工作表一一对应- 喙长（mm）：喙部长度（喙尖至喙根）- 头长（mm）：头部长度（喙尖至头后）- 跗跖长（mm）：跗跖骨长度- 翼长（cm）：右翼长度- 体重（kg）：鸟类体重（不含携带的背负袋）3. 阿德利企鹅污染物浓度表（Concentrations Adelies）：- 阿德利企鹅：鸟类编号，与'阿德利企鹅形态学数据'工作表一一对应- PCB153：多氯联苯同系物153的浓度（ng/g 脂重）- HCB：六氯苯浓度（ng/g 脂重）- DDE：二氯二苯二氯乙烯浓度（ng/g 脂重）- 狄氏剂：狄氏剂浓度（ng/g 脂重）- 样本量：采集的羽脂样品重量4. 阿德利企鹅形态学数据（Morphometric data Adelies）：- 阿德利企鹅：鸟类编号，与'阿德利企鹅污染物浓度表'工作表一一对应- 喙长（mm）：喙部长度（喙尖至喙根）- 头长（mm）：头部长度（喙尖至头后）- 跗跖长（mm）：跗跖骨长度- 鳍肢长（cm）：右翼鳍肢长度- 体重（kg）：鸟类体重（不含携带的背负袋）在各污染物浓度工作表中，标注为"less than d.l."的条目表示其浓度低于仪器检测下限。