DOI: 10.1029/2012GB004296
Scopus记录号: 2-s2.0-84881039296
论文题名: Millennial scale impact on the marine biogeochemical cycle of mercury from early mining on the Iberian Peninsula
作者: Serrano O ; , Martínez-Cortizas A ; , Mateo M ; A ; , Biester H ; , Bindler R
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 1 起始页码: 21
结束页码: 30
语种: 英语
英文关键词: environmental archives
; holocene
; marine sediments
; Mediterranean Sea
; mercury pollution
; posidonia oceanica
Scopus关键词: environmental archives
; Holocenes
; Marine sediments
; Mediterranean sea
; Mercury pollution
; Posidonia oceanica
; Marine pollution
; Pollution
; Sediments
; Submarine geology
; Mercury (metal)
; anthropogenic source
; bioaccumulation
; biogeochemical cycle
; coastal zone
; concentration (composition)
; Holocene
; marine environment
; marine sediment
; mercury (element)
; mining
; pollution effect
; reconstruction
; seagrass
; Iberian Peninsula
; Mediterranean Sea
英文摘要: The high-resolution mercury record of a Posidonia oceanica mat in the northwest Mediterranean provides an unprecedented testimony of changes in environmental mercury (Hg) loading to the coastal marine environment over the past 4315 yr BP. The period reconstructed made it possible to establish tentative preanthropogenic background Hg levels for the area (6.8 ± 1.5 ng g-1 in bulk sediments). A small, but significant, anthropogenic Hg increase was identifiable by ∼2500 yr BP, in agreement with the beginning of intense mining in Spain. Changes in the record suggest four major periods of anthropogenic Hg pollution inputs to the Mediterranean: first, during the Roman Empire (2100-1800 yr BP); second, in the Late Middle Ages (970-650 yr BP); third, in the modern historical era (530-380 yr BP); and fourth, in the industrial period (last 250 years), with Hg concentrations two-, four-, five-, and tenfold higher than background concentrations, respectively. Hg from anthropogenic sources has dominated during the last millennium (increase from ∼12 to ∼100 ng g-1), which can be related to the widespread historical exploitation of ore resources on the Iberian Peninsula. The chronology of Hg concentrations in the mat archive, together with other Hg pollution records from the Iberian Peninsula, suggests regional-scale Hg transport and deposition and shows earlier marine Hg pollution than elsewhere in Europe. Moreover, the mat also records a higher number of historic contamination phases, in comparison with other natural archives, probably due to the fact that the bioaccumulating capacity of P. oceanica magnify environmental changes in Hg concentrations. In this study, we demonstrate the uniqueness of P. oceanica meadows as a long-term archive recording trends in Hg abundance in the marine coastal environment, as well as its potential role in the Mediterranean as a long-term Hg sink. ©2012. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77629
Appears in Collections: 气候变化事实与影响
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作者单位: Centro de Estudios Avanzados de Blanes (CEAB), c/Accés a la Cala St. Francesc, 14, 17300 Blanes, Spain; Departamento Edafologia y Quimica Agricola, Facultad di Biologia, Santiago, Spain; Institute of Geoecology Technische, Universitä Braunschweig, Braunschweig, Germany; Department of Ecology and Environmental Science, Umeå University, Umeå, Sweden
Recommended Citation:
Serrano O,, Martínez-Cortizas A,, Mateo M,et al. Millennial scale impact on the marine biogeochemical cycle of mercury from early mining on the Iberian Peninsula[J]. Global Biogeochemical Cycles,2013-01-01,27(1)