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Water and soil biotic relations in Mercury distributionThe distribution of Hg is considered both in terms of its availability in soil fractions and the relationship between Hg in plant samples and Hg in ambient soils or other supportive media. The plants were grouped by habitat into epipedic-epiphytic (mosses, lichens) and endopedic-aquatic-marine (Basidiomycetes and algae) samples; nonvascular and vascular forms were also distinguished. Sources included Alaska, Hawaii, New England and Iceland. Brief consideration was also given to Hg distribution in a plant-animal-soil community. Data were expressed in terms of plant Hg content and plant substratum concentration ratio. Average Hg contents and concentration ratios, and modal ranges for the ratios were determined. The results showed similar average Hg contents in all groups (126 to 199 ppb) but a low value (84 ppb) in the lichens; terrestrial forms had ratios of 3.5 to 7.6 whereas the marine algae yielded a figure of 78.7. A secondary mode in the range 0 to 0.1 appeared only in the Alaska-New England Group, over 500 km distant from active thermal sites. Evidence for both exclusion and concentration behavior was obtained.
Document ID
19770034726
Document Type
Reprint (Version printed in journal)
Authors
Siegel, S. M. (Hawaii Univ. Honolulu, HI, United States)
Siegel, B. Z. (Hawaii Univ. Honolulu, HI, United States)
Puerner, N. (Hawaii Univ. Honolulu, HI, United States)
Speitel, T. (Hawaii, University Honolulu, Hawaii, United States)
Thorarinsson, F. (University of Iceland Reykjavik, Iceland)
Date Acquired
August 9, 2013
Publication Date
January 1, 1975
Subject Category
ENVIRONMENT POLLUTION
Funding Number(s)
CONTRACT_GRANT: NGL-12-001-042
Distribution Limits
Public
Copyright
Other