Organic Matter in Rivers: The Crossroads between Climate and Water Quality
All surface waters in the world contain dissolved organic matter and its concentration depends on climate and vegetation. Dissolved organic carbon (DOC) is ten times higher in wetlands and swamps than in surface water of arctic, alpine, or arid climate. Climates of high ecosystem productivity (i.e.,...
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Lawrence Livermore National Laboratory
2001
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ftunivnotexas:info:ark/67531/metadc1417173 2023-05-15T15:09:59+02:00 Organic Matter in Rivers: The Crossroads between Climate and Water Quality Davisson, M L United States. Department of Energy. 2001-04-27 PDF-FILE: 28 SIZE: 1.9 MBYTES pages Text https://digital.library.unt.edu/ark:/67531/metadc1417173/ English eng Lawrence Livermore National Laboratory rep-no: UCRL-JC-143510 grantno: W-7405-ENG-48 osti: 15005984 https://digital.library.unt.edu/ark:/67531/metadc1417173/ ark: ark:/67531/metadc1417173 Our Water Our Rivers St. Louis as a 21st Century river City Water Symposium, St Louis, MO (US), 04/27/2001 Surface Waters Oxygen 18 Missouri River Plants Water Quality Carbon 13 Rivers Water Chemistry Drinking Water Rangelands 54 Environmental Sciences Organic Matter Climates Article 2001 ftunivnotexas 2019-02-09T23:08:25Z All surface waters in the world contain dissolved organic matter and its concentration depends on climate and vegetation. Dissolved organic carbon (DOC) is ten times higher in wetlands and swamps than in surface water of arctic, alpine, or arid climate. Climates of high ecosystem productivity (i.e., tropics) typically have soils with low organic carbon storage, but drain high dissolved organic loads to rivers. Regions with lower productivity (e.g. grasslands) typically have high soil carbon storage while adjacent rivers have high DOC contents. Most DOC in a free-flowing river is derived from leaching vegetation and soil organic matter, whereas in dammed rivers algae may comprise a significant portion. Water chemistry and oxygen-18 abundance of river water, along with radiocarbon and carbon-13 isotope abundance measurements of DOC were used to distinguish water and water quality sources in the Missouri River watershed. Drinking water for the City of St. Louis incorporates these different sources, and its water quality depends mostly on whether runoff is derived from the upper or the lower watershed, with the lower watershed contributing water with the highest DOC. During drinking water chlorination, DOC forms carcinogenic by-products in proportion to the amount of DOC present. This has recently led the USEPA to propose federal regulation standards. Restoration of natural riparian habitat such as wetlands will likely increase DOC concentrations in river water. Article in Journal/Newspaper Arctic University of North Texas: UNT Digital Library Arctic St. Louis ENVELOPE(-67.496,-67.496,-67.132,-67.132) |
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University of North Texas: UNT Digital Library |
op_collection_id |
ftunivnotexas |
language |
English |
topic |
Surface Waters Oxygen 18 Missouri River Plants Water Quality Carbon 13 Rivers Water Chemistry Drinking Water Rangelands 54 Environmental Sciences Organic Matter Climates |
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Surface Waters Oxygen 18 Missouri River Plants Water Quality Carbon 13 Rivers Water Chemistry Drinking Water Rangelands 54 Environmental Sciences Organic Matter Climates Davisson, M L Organic Matter in Rivers: The Crossroads between Climate and Water Quality |
topic_facet |
Surface Waters Oxygen 18 Missouri River Plants Water Quality Carbon 13 Rivers Water Chemistry Drinking Water Rangelands 54 Environmental Sciences Organic Matter Climates |
description |
All surface waters in the world contain dissolved organic matter and its concentration depends on climate and vegetation. Dissolved organic carbon (DOC) is ten times higher in wetlands and swamps than in surface water of arctic, alpine, or arid climate. Climates of high ecosystem productivity (i.e., tropics) typically have soils with low organic carbon storage, but drain high dissolved organic loads to rivers. Regions with lower productivity (e.g. grasslands) typically have high soil carbon storage while adjacent rivers have high DOC contents. Most DOC in a free-flowing river is derived from leaching vegetation and soil organic matter, whereas in dammed rivers algae may comprise a significant portion. Water chemistry and oxygen-18 abundance of river water, along with radiocarbon and carbon-13 isotope abundance measurements of DOC were used to distinguish water and water quality sources in the Missouri River watershed. Drinking water for the City of St. Louis incorporates these different sources, and its water quality depends mostly on whether runoff is derived from the upper or the lower watershed, with the lower watershed contributing water with the highest DOC. During drinking water chlorination, DOC forms carcinogenic by-products in proportion to the amount of DOC present. This has recently led the USEPA to propose federal regulation standards. Restoration of natural riparian habitat such as wetlands will likely increase DOC concentrations in river water. |
author2 |
United States. Department of Energy. |
format |
Article in Journal/Newspaper |
author |
Davisson, M L |
author_facet |
Davisson, M L |
author_sort |
Davisson, M L |
title |
Organic Matter in Rivers: The Crossroads between Climate and Water Quality |
title_short |
Organic Matter in Rivers: The Crossroads between Climate and Water Quality |
title_full |
Organic Matter in Rivers: The Crossroads between Climate and Water Quality |
title_fullStr |
Organic Matter in Rivers: The Crossroads between Climate and Water Quality |
title_full_unstemmed |
Organic Matter in Rivers: The Crossroads between Climate and Water Quality |
title_sort |
organic matter in rivers: the crossroads between climate and water quality |
publisher |
Lawrence Livermore National Laboratory |
publishDate |
2001 |
url |
https://digital.library.unt.edu/ark:/67531/metadc1417173/ |
long_lat |
ENVELOPE(-67.496,-67.496,-67.132,-67.132) |
geographic |
Arctic St. Louis |
geographic_facet |
Arctic St. Louis |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Our Water Our Rivers St. Louis as a 21st Century river City Water Symposium, St Louis, MO (US), 04/27/2001 |
op_relation |
rep-no: UCRL-JC-143510 grantno: W-7405-ENG-48 osti: 15005984 https://digital.library.unt.edu/ark:/67531/metadc1417173/ ark: ark:/67531/metadc1417173 |
_version_ |
1766341063280164864 |