气候变化领域集成服务门户(CCPortal): Mercury content and isotopic composition of teeth, and sex and age of skulls of polar bears collected in Svalbard

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.807120
	Mercury content and isotopic composition of teeth, and sex and age of skulls of polar bears collected in Svalbard
	Aubail; Aurore; Dietz; Rune; Rigét; Frank F; Sonne; Christian; Wiig; Øystein; Caurant; Florence
发布日期	2012-02-12
数据集类型	dataset
英文简介	We examined the use of mercury (Hg) and nitrogen and carbon stable isotopes in teeth of polar bear (Ursus maritimus) from Svalbard as biotracers of temporal changes in Hg pollution exposure between 1964 and 2003. Teeth were regarded as a good matrix of the Hg exposure, and in total 87 teeth of polar bears were analysed. Dental Hg levels ranged from 0.6 to 72.3 ng/g dry weight and increased with age during the first 10 years of life. A decreasing time trend in Hg concentrations was observed over the recent four decades while no temporal changes were found in the stable isotope ratios of nitrogen (d15N) and carbon (d13C). This suggests that the decrease of Hg concentrations over time was more likely due to a lower environmental Hg exposure in this region rather than a shift in the feeding habits of Svalbard polar bears.
空间范围	Latitude: 78.900000 * Longitude: 18.010000
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215543
推荐引用方式 GB/T 7714	Aubail,Aurore,Dietz,et al. Mercury content and isotopic composition of teeth, and sex and age of skulls of polar bears collected in Svalbard.2012-02-12.https://doi.org/10.1594/PANGAEA.807120.