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Mercury and Methylmercury Concentrations and Litterfall Mass in Autumn Litterfall Samples Collected at Selected National Atmospheric Deposition Program Sites in 2007-2009 and 2012-2015

Dates

Publication Date
Time Period
2007
Time Period
2015

Citation

Risch, Martin, 2017, Mercury and Methylmercury Concentrations and Litterfall Mass in Autumn Litterfall Samples Collected at Selected National Atmospheric Deposition Program Sites in 2007-2009 and 2012-2015: U.S. Geological Survey data release, https://doi.org/10.5066/F7KH0KHT.

Summary

Mercury (Hg) is a persistent environmental contaminant and can accumulate and concentrate in food webs as methylmercury (MeHg), presenting a health risk to humans and wildlife. Multiyear monitoring and modeling studies have shown that atmospheric Hg in litterfall is an important form of Hg deposition to forests. Annual litterfall consists primarily of leaves with some amounts of needles, twigs, bark, flowers, seeds, fruits, and nuts. Atmospheric Hg accumulates in leaves and reaches an annual maximum concentration at autumn leaf drop. This data set is derived from autumn litterfall collected at 30 selected National Atmospheric Deposition Program (NADP) Mercury Deposition Network (MDN) sites in deciduous and mixed deciduous-coniferous [...]

Contacts

Point of Contact :
Martin Risch
Originator :
Martin Risch
Metadata Contact :
Martin Risch
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - Science Base
USGS Mission Area :
Water
SDC Data Owner :
Indiana-Kentucky Water Science Center

Attached Files

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Litterfall Data at NADP Sites Final.csv 19.17 KB
Litterfall Data at NADP Sites Final.xml
Original FGDC Metadata

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12.24 KB

Purpose

Information for 23 sites during 2007-2009 from this dataset were interpreted by Risch et al. (2012, http://dx.doi.org/10.1016/j.envpol.2011.06.005). Information for 27 sites during 2007-2009 and 2012-2014 from this dataset were interpreted for a study about atmospheric mercury deposition to forests in the eastern USA, with a publication in review as of January 2017. Information for 18 sites during 2015 from this dataset have not been interpreted for publication as of January 2017.

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Additional Information

Identifiers

Type Scheme Key
IPDS https://www.sciencebase.gov/vocab/category/item/identifier IP-082758
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7KH0KHT

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