Water and soil biotic relations in Mercury distribution
The 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 (Basi...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19770034726 2023-05-15T16:50:05+02:00 Water and soil biotic relations in Mercury distribution Siegel, S. M. Siegel, B. Z. Puerner, N. Speitel, T. Thorarinsson, F. Unclassified, Unlimited, Publicly available JAN 1, 1975 http://ntrs.nasa.gov/search.jsp?R=19770034726 unknown http://ntrs.nasa.gov/search.jsp?R=19770034726 Accession ID: 77A17578 Copyright Other Sources 45 1975 ftnasantrs 2012-02-15T13:02:52Z The 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. Other/Unknown Material Iceland Alaska NASA Technical Reports Server (NTRS) |
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45 Siegel, S. M. Siegel, B. Z. Puerner, N. Speitel, T. Thorarinsson, F. Water and soil biotic relations in Mercury distribution |
topic_facet |
45 |
description |
The 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. |
author |
Siegel, S. M. Siegel, B. Z. Puerner, N. Speitel, T. Thorarinsson, F. |
author_facet |
Siegel, S. M. Siegel, B. Z. Puerner, N. Speitel, T. Thorarinsson, F. |
author_sort |
Siegel, S. M. |
title |
Water and soil biotic relations in Mercury distribution |
title_short |
Water and soil biotic relations in Mercury distribution |
title_full |
Water and soil biotic relations in Mercury distribution |
title_fullStr |
Water and soil biotic relations in Mercury distribution |
title_full_unstemmed |
Water and soil biotic relations in Mercury distribution |
title_sort |
water and soil biotic relations in mercury distribution |
publishDate |
1975 |
url |
http://ntrs.nasa.gov/search.jsp?R=19770034726 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Iceland Alaska |
genre_facet |
Iceland Alaska |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19770034726 Accession ID: 77A17578 |
op_rights |
Copyright |
_version_ |
1766040271650291712 |