A 1500-year record of mercury isotopes in seal feces documents | ResearchBunny

Index

Abstract

This study investigates the mercury isotopic composition of a 1500-year sediment profile from the Fildes Peninsula, King George Island, Antarctica, heavily influenced by seal activities. The mass-independent isotope fractionation of mercury (Δ¹⁹⁹Hg) reflects changes in methylmercury photodemethylation, a process modulated by sea ice. Higher Δ¹⁹⁹Hg values during a warm period (-700 to -1000 years ago) indicate increased photodemethylation due to reduced sea ice. This demonstrates the use of mercury isotopes as a proxy for reconstructing historical sea ice changes in the Antarctic.

Publisher

Communications Earth & Environment

Published On

Jul 14, 2023

Authors

Hongwei Liu, Wang Zheng, Bridget A. Bergquist, Yuesong Gao, Fange Yue, Lianjiao Yang, Liguang Sun, Zhouqing Xie

Related Publications

Explore these studies to deepen your understanding of the subject.

Earth Sciences

Large-scale emergence of regional changes in year-to-year temperature variability by the end of the 21st century

D. Olonscheck, A. P. Schurer, et al.

Medicine and Health

The influence of acute lifestyle changes on NAFLD evolution in a multicentre cohort: a matter of body composition

M. Dallio, M. Sangineto, et al.

Biology

Mapping the *in situ* microspatial distribution of ice algal biomass through hyperspectral imaging of sea-ice cores

E. Cimoli, V. Lucieer, et al.

Biology

Could tau-PET imaging contribute to a better understanding of the different patterns of clinical progression in Alzheimer's disease? A 2-year longitudinal study

J. Lagarde, P. Olivieri, et al.

Listen, Learn & Level Up

Over 10,000 hours of research content in 25+ fields, available in 12+ languages.

No more digging through PDFs—just hit play and absorb the world's latest research in your language, on your time.

listen to research audio papers with researchbunny