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Investigating Trace Element Sourcing...

Junqueira, Tassiane Pereira,

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Investigating Trace Element Sourcing and Biogeochemical Cycling in the Great Lakes /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Investigating Trace Element Sourcing and Biogeochemical Cycling in the Great Lakes // Tassiane Pereira Junqueira.
Author:	Junqueira, Tassiane Pereira,
Description:	1 electronic resource (461 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
Contained By:	Dissertations Abstracts International86-03B.
Subject:	Metals. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31366734
ISBN:	9798384338253

Investigating Trace Element Sourcing and Biogeochemical Cycling in the Great Lakes /
Junqueira, Tassiane Pereira,

Investigating Trace Element Sourcing and Biogeochemical Cycling in the Great Lakes /Tassiane Pereira Junqueira. - 1 electronic resource (461 pages)

Source: Dissertations Abstracts International, Volume: 86-03, Section: B.

The Great Lakes are a group of five interconnected lakes that form one of the world's largest freshwater systems, containing about 21% of the world's liquid surface freshwater. However, urbanization and industrialization throughout the basin have increased the discharge of various pollutants into the lakes, including metals, such as copper (Cu), zinc (Zn), and rare earth elements (REE). Furthermore, agricultural development, urbanization, and other hydrological management and land-use practices contribute to water and sediment contamination through runoff that can lead to nutrient enrichment and increased metal accumulation, potentially disrupting aquatic ecosystems and posing risks to the environment. Copper and zinc are trace metals with long histories as anthropogenic contaminants. In contrast, the REE are considered potential emerging contaminants in this system, and their baseline levels as well as biogeochemical cycling are not as well understood. Environmental, economic, and public health consequences may be associated with elevated levels of these trace elements in aquatic ecosystems, but the sources, sinks and processes controlling the occurrence of Cu, Zn and REE, particularly at baseline levels, remain poorly understood in many locations in the Great Lakes. This PhD thesis first summarizes current knowledge on biogeochemical Cu, Zn and REE dynamics in the Great Lakes, including current concentrations and loads, potential sources, and major processes controlling their occurrence. Results from Cu and Zn isotope analyses of river waters and sediments are presented to address critical knowledge gaps pertaining to their cycling and sources. Furthermore, REE concentrations in Great Lakes waters and sediments are assessed to investigate the biogeochemical processes governing REE variability in the Great Lakes, and to quantify the role of sedimentation as a mechanism in lake-wide REE dynamics. Overall, this thesis reveals the highly variable spatiotemporal dynamics of Cu, Zn, and REE across the basin, and reveals the distinct behaviors of trace elements within and between the lakes. This thesis expands the understanding of the biogeochemical processes controlling Cu, Zn, and REE dynamics in the Great Lakes, assisting in the preservation of this globally distinctive freshwater reserve against legacy and emerging trace metal pollution.

English

ISBN: 9798384338253Subjects--Topical Terms:

601053
Metals.

Investigating Trace Element Sourcing and Biogeochemical Cycling in the Great Lakes /
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520 $a The Great Lakes are a group of five interconnected lakes that form one of the world's largest freshwater systems, containing about 21% of the world's liquid surface freshwater. However, urbanization and industrialization throughout the basin have increased the discharge of various pollutants into the lakes, including metals, such as copper (Cu), zinc (Zn), and rare earth elements (REE). Furthermore, agricultural development, urbanization, and other hydrological management and land-use practices contribute to water and sediment contamination through runoff that can lead to nutrient enrichment and increased metal accumulation, potentially disrupting aquatic ecosystems and posing risks to the environment. Copper and zinc are trace metals with long histories as anthropogenic contaminants. In contrast, the REE are considered potential emerging contaminants in this system, and their baseline levels as well as biogeochemical cycling are not as well understood. Environmental, economic, and public health consequences may be associated with elevated levels of these trace elements in aquatic ecosystems, but the sources, sinks and processes controlling the occurrence of Cu, Zn and REE, particularly at baseline levels, remain poorly understood in many locations in the Great Lakes. This PhD thesis first summarizes current knowledge on biogeochemical Cu, Zn and REE dynamics in the Great Lakes, including current concentrations and loads, potential sources, and major processes controlling their occurrence. Results from Cu and Zn isotope analyses of river waters and sediments are presented to address critical knowledge gaps pertaining to their cycling and sources. Furthermore, REE concentrations in Great Lakes waters and sediments are assessed to investigate the biogeochemical processes governing REE variability in the Great Lakes, and to quantify the role of sedimentation as a mechanism in lake-wide REE dynamics. Overall, this thesis reveals the highly variable spatiotemporal dynamics of Cu, Zn, and REE across the basin, and reveals the distinct behaviors of trace elements within and between the lakes. This thesis expands the understanding of the biogeochemical processes controlling Cu, Zn, and REE dynamics in the Great Lakes, assisting in the preservation of this globally distinctive freshwater reserve against legacy and emerging trace metal pollution.
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650 4 $a Plasma. $3 877619
650 4 $a Pollutants. $3 551065
650 4 $a Rare earth elements. $3 3816904
650 4 $a Water supply. $3 736103
650 4 $a Biogeochemistry. $3 545717
650 4 $a Adsorption. $3 580046
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650 4 $a Metal oxides. $3 3681693
650 4 $a Fractionation. $3 3706595
650 4 $a Fractions. $3 2070979
650 4 $a Mining. $3 3544442
650 4 $a Polychlorinated biphenyls--PCB. $3 3680680
650 4 $a Climate change. $2 bicssc $3 2079509
650 4 $a Biological activity. $3 3699913
650 4 $a Lakes. $3 546147
650 4 $a Creeks & streams. $3 3685269
650 4 $a Algae. $3 546231
650 4 $a Watersheds. $3 544815
650 4 $a Surveillance. $3 3559358
650 4 $a Rivers. $3 519737
650 4 $a Metallurgy. $3 535414
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Materials science. $3 543314
650 4 $a Mathematics. $3 515831
650 4 $a Microbiology. $3 536250
650 4 $a Water resources management. $3 794747
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