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Controls Over Base Cation Concentrations in Stream and River Waters: A Long-Term Analysis on the Role of Deposition and Climate

Significant concern has emerged over the past decades regarding decreases in available base cations (that is, calcium, magnesium, potassium, and sodium) in forest soils and surface waters. Base cations (BCs) are important for buffering against changes in soil and water acidity, and their concentrati... Full description

Journal Title: Ecosystems 2013-08-01, Vol.16 (5), p.707-721
Main Author: Lucas, Richard W
Other Authors: Sponseller, Ryan A , Laudon, Hjalmar
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Boston: Springer Science+Business Media
ID: ISSN: 1432-9840
Link: http://www.slu.se/subweb/bibliotek/slupub/publ/?publ_id=50299
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title: Controls Over Base Cation Concentrations in Stream and River Waters: A Long-Term Analysis on the Role of Deposition and Climate
format: Article
creator:
  • Lucas, Richard W
  • Sponseller, Ryan A
  • Laudon, Hjalmar
subjects:
  • Acid deposition
  • Acid soils
  • Analysis
  • Anions
  • Article
  • Automobile driving
  • Bayesian analysis
  • Behavior
  • Biomedical and Life Sciences
  • Calcium
  • Climate
  • Climate models
  • Ecology
  • Environmental Chemistry
  • Environmental Management
  • Environmental protection
  • Evolution
  • Forest Science
  • Forest soils
  • Geoecology/Natural Processes
  • Greenhouse effect
  • Hydrology/Water Resources
  • Life Sciences
  • Magnesium
  • Motor vehicle driving
  • Plant Sciences
  • Potassium
  • Rivers
  • Sedimentation & deposition
  • Skogsvetenskap
  • Soil ecology
  • Soil pollution
  • Soil water
  • Stream water
  • Streams
  • Sulfates
  • Surface water
  • Systematics
  • Watersheds
  • Zoology
ispartof: Ecosystems, 2013-08-01, Vol.16 (5), p.707-721
description: Significant concern has emerged over the past decades regarding decreases in available base cations (that is, calcium, magnesium, potassium, and sodium) in forest soils and surface waters. Base cations (BCs) are important for buffering against changes in soil and water acidity, and their concentrations can be indicative of environmental management problems such as those linked to acid deposition and land use. Climate variability is also a potentially large factor influencing the dynamics of BCs in soils and surface waters, but our understanding of these interactions at broad scales remains elusive. We used a hierarchical Bayesian model to evaluate the long-term (1990-2010) patterns and drivers of BC concentrations for 60 stream and river monitoring stations across Sweden. Results indicated that the long-term trends in concentration, and the associated environmental drivers, differed among individual BCs and geographical regions. For example, we found that concentrations of Ca 2+ , Mg 2+ , K + , and Na + have decreased in southern Sweden since 1990 and that this is strongly related to concurrent declines in sulfate (SO 4 2- ) over the same period of record. In contrast, concentrations of Ca 2+ , Mg 2+ , K + , and Na + in northern Sweden did not exhibit significant directional trends, despite declines in SO 4 2- , nitrate (NO 3 - ), and chloride (Cl - ) over the same period. Instead, BC dynamics in the north are characterized by inter-annual variability that is most closely linked to climate variables. Results suggest that the interaction between climatic variability and historical acid deposition determines the regional pattern and long-term trends of BC concentrations across streams and rivers of Sweden. Understanding the strength of the interaction between climate features and historic deposition will greatly improve our ability to predict long-term trends of Ca 2+ , Mg 2+ , K + , and Na + and their inter-annual dynamics in the future.
language: eng
source:
identifier: ISSN: 1432-9840
fulltext: no_fulltext
issn:
  • 1432-9840
  • 1435-0629
  • 1435-0629
url: Link


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titleControls Over Base Cation Concentrations in Stream and River Waters: A Long-Term Analysis on the Role of Deposition and Climate
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descriptionSignificant concern has emerged over the past decades regarding decreases in available base cations (that is, calcium, magnesium, potassium, and sodium) in forest soils and surface waters. Base cations (BCs) are important for buffering against changes in soil and water acidity, and their concentrations can be indicative of environmental management problems such as those linked to acid deposition and land use. Climate variability is also a potentially large factor influencing the dynamics of BCs in soils and surface waters, but our understanding of these interactions at broad scales remains elusive. We used a hierarchical Bayesian model to evaluate the long-term (1990-2010) patterns and drivers of BC concentrations for 60 stream and river monitoring stations across Sweden. Results indicated that the long-term trends in concentration, and the associated environmental drivers, differed among individual BCs and geographical regions. For example, we found that concentrations of Ca 2+ , Mg 2+ , K + , and Na + have decreased in southern Sweden since 1990 and that this is strongly related to concurrent declines in sulfate (SO 4 2- ) over the same period of record. In contrast, concentrations of Ca 2+ , Mg 2+ , K + , and Na + in northern Sweden did not exhibit significant directional trends, despite declines in SO 4 2- , nitrate (NO 3 - ), and chloride (Cl - ) over the same period. Instead, BC dynamics in the north are characterized by inter-annual variability that is most closely linked to climate variables. Results suggest that the interaction between climatic variability and historical acid deposition determines the regional pattern and long-term trends of BC concentrations across streams and rivers of Sweden. Understanding the strength of the interaction between climate features and historic deposition will greatly improve our ability to predict long-term trends of Ca 2+ , Mg 2+ , K + , and Na + and their inter-annual dynamics in the future.
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subjectAcid deposition ; Acid soils ; Analysis ; Anions ; Article ; Automobile driving ; Bayesian analysis ; Behavior ; Biomedical and Life Sciences ; Calcium ; Climate ; Climate models ; Ecology ; Environmental Chemistry ; Environmental Management ; Environmental protection ; Evolution ; Forest Science ; Forest soils ; Geoecology/Natural Processes ; Greenhouse effect ; Hydrology/Water Resources ; Life Sciences ; Magnesium ; Motor vehicle driving ; Plant Sciences ; Potassium ; Rivers ; Sedimentation & deposition ; Skogsvetenskap ; Soil ecology ; Soil pollution ; Soil water ; Stream water ; Streams ; Sulfates ; Surface water ; Systematics ; Watersheds ; Zoology
ispartofEcosystems, 2013-08-01, Vol.16 (5), p.707-721
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descriptionSignificant concern has emerged over the past decades regarding decreases in available base cations (that is, calcium, magnesium, potassium, and sodium) in forest soils and surface waters. Base cations (BCs) are important for buffering against changes in soil and water acidity, and their concentrations can be indicative of environmental management problems such as those linked to acid deposition and land use. Climate variability is also a potentially large factor influencing the dynamics of BCs in soils and surface waters, but our understanding of these interactions at broad scales remains elusive. We used a hierarchical Bayesian model to evaluate the long-term (1990-2010) patterns and drivers of BC concentrations for 60 stream and river monitoring stations across Sweden. Results indicated that the long-term trends in concentration, and the associated environmental drivers, differed among individual BCs and geographical regions. For example, we found that concentrations of Ca 2+ , Mg 2+ , K + , and Na + have decreased in southern Sweden since 1990 and that this is strongly related to concurrent declines in sulfate (SO 4 2- ) over the same period of record. In contrast, concentrations of Ca 2+ , Mg 2+ , K + , and Na + in northern Sweden did not exhibit significant directional trends, despite declines in SO 4 2- , nitrate (NO 3 - ), and chloride (Cl - ) over the same period. Instead, BC dynamics in the north are characterized by inter-annual variability that is most closely linked to climate variables. Results suggest that the interaction between climatic variability and historical acid deposition determines the regional pattern and long-term trends of BC concentrations across streams and rivers of Sweden. Understanding the strength of the interaction between climate features and historic deposition will greatly improve our ability to predict long-term trends of Ca 2+ , Mg 2+ , K + , and Na + and their inter-annual dynamics in the future.
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20Greenhouse effect
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abstractSignificant concern has emerged over the past decades regarding decreases in available base cations (that is, calcium, magnesium, potassium, and sodium) in forest soils and surface waters. Base cations (BCs) are important for buffering against changes in soil and water acidity, and their concentrations can be indicative of environmental management problems such as those linked to acid deposition and land use. Climate variability is also a potentially large factor influencing the dynamics of BCs in soils and surface waters, but our understanding of these interactions at broad scales remains elusive. We used a hierarchical Bayesian model to evaluate the long-term (1990-2010) patterns and drivers of BC concentrations for 60 stream and river monitoring stations across Sweden. Results indicated that the long-term trends in concentration, and the associated environmental drivers, differed among individual BCs and geographical regions. For example, we found that concentrations of Ca 2+ , Mg 2+ , K + , and Na + have decreased in southern Sweden since 1990 and that this is strongly related to concurrent declines in sulfate (SO 4 2- ) over the same period of record. In contrast, concentrations of Ca 2+ , Mg 2+ , K + , and Na + in northern Sweden did not exhibit significant directional trends, despite declines in SO 4 2- , nitrate (NO 3 - ), and chloride (Cl - ) over the same period. Instead, BC dynamics in the north are characterized by inter-annual variability that is most closely linked to climate variables. Results suggest that the interaction between climatic variability and historical acid deposition determines the regional pattern and long-term trends of BC concentrations across streams and rivers of Sweden. Understanding the strength of the interaction between climate features and historic deposition will greatly improve our ability to predict long-term trends of Ca 2+ , Mg 2+ , K + , and Na + and their inter-annual dynamics in the future.
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