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The transport, transformation, and trophic transfer of bioactive metals in an urban impacted buoyant river plume
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TypeOfResource
Text
TitleInfo
Title
The transport, transformation, and trophic transfer of bioactive metals in an urban impacted buoyant river plume
Identifier
ETD_1316
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000050473
Identifier
(type = doi)
doi:10.7282/T3639Q1J
Language
LanguageTerm
(authority = ISO 639-3:2007);
(type = text)
English
Genre
(authority = marcgt)
theses
Subject
(authority = RUETD)
Topic
Environmental Sciences
Subject
(authority = ETD-LCSH)
Topic
Estuarine pollution--Hudson River Estuary (N.Y. and N.J.)
Subject
(authority = ETD-LCSH)
Topic
Metals--Hudson River (N.Y. and N.J.)
Subject
(authority = ETD-LCSH)
Topic
Trace elements in water--Hudson River (N.Y. and N.J.)
Subject
(authority = ETD-LCSH)
Topic
Sediment transport
Subject
HierarchicalGeographic
Country
UNITED STATES
State
New York
Subject
HierarchicalGeographic
Country
UNITED STATES
State
New Jersey
Abstract
At the mouth of the Hudson River estuary, one of the most urbanized and pollution impacted estuaries in North America, estuarine water forms a buoyant plume
which transports nutrients and contaminants into the Mid-Atlantic Bight. As part of the LaGrangian Transport and Transformation Experiment (LaTTE), the transport,
transformation, and zooplankton bioaccumulation of contaminant and terrestrial metals (Ag, Al, Cd, Cu, Fe, Hg, Mn, Pb, Zn) in the plume were examined in May 2004, April 2005, and May 2006. In order to determine the low level concentrations of dissolved metals in plume waters, an improved method for determining metals in seawater by online column preconcentration, isotope dilution HR-ICP-MS was developed. Within the
plume, metal concentrations generally decreased as plume waters were diluted with low metal shelf water. Within the plume, particle sinking was an important loss mechanism for metals. The formation of a narrow coastal current resulted in rapid down shelf (southward) transport of plume constituents, while the formation of a large recirculating eddy delayed down shelf transport, resulted in increased particle sinking, and may result in cross shelf (eastward) transport if shifting winds advect plume waters offshore. Results
suggest that while plume particulate matter was composed of a mixture of biogenic and terrigenous material, metals were primarily (54-100%) associated with terrigenous particles. Hg in the plume was largely associated with particulate matter (median 61%)
and dissolved Hg had similar concentrations as those in North Atlantic surface waters. Water-particle distribution coefficients (KD) for Hg were relatively constant in 2004 and 2005, but decreased within the plume within the phytoplankton bloom at mid salinity in
2006, suggesting that plume phytoplankton may release Hg binding ligands in response to metal stress. With the exception of Cd, metals in plume copepods were elevated relative to oceanic copepods. Modeling results show that trophic transfer was an
important bioaccumulation pathway for Cd, Cu, and Zn, while the importance of this pathway for Ag was less clear. Comparison with toxicity data suggests that plume zooplankton may experience sub-lethal toxic effects from Ag and Zn, however future work will be required to confirm or refute this hypothesis.
which transports nutrients and contaminants into the Mid-Atlantic Bight. As part of the LaGrangian Transport and Transformation Experiment (LaTTE), the transport,
transformation, and zooplankton bioaccumulation of contaminant and terrestrial metals (Ag, Al, Cd, Cu, Fe, Hg, Mn, Pb, Zn) in the plume were examined in May 2004, April 2005, and May 2006. In order to determine the low level concentrations of dissolved metals in plume waters, an improved method for determining metals in seawater by online column preconcentration, isotope dilution HR-ICP-MS was developed. Within the
plume, metal concentrations generally decreased as plume waters were diluted with low metal shelf water. Within the plume, particle sinking was an important loss mechanism for metals. The formation of a narrow coastal current resulted in rapid down shelf (southward) transport of plume constituents, while the formation of a large recirculating eddy delayed down shelf transport, resulted in increased particle sinking, and may result in cross shelf (eastward) transport if shifting winds advect plume waters offshore. Results
suggest that while plume particulate matter was composed of a mixture of biogenic and terrigenous material, metals were primarily (54-100%) associated with terrigenous particles. Hg in the plume was largely associated with particulate matter (median 61%)
and dissolved Hg had similar concentrations as those in North Atlantic surface waters. Water-particle distribution coefficients (KD) for Hg were relatively constant in 2004 and 2005, but decreased within the plume within the phytoplankton bloom at mid salinity in
2006, suggesting that plume phytoplankton may release Hg binding ligands in response to metal stress. With the exception of Cd, metals in plume copepods were elevated relative to oceanic copepods. Modeling results show that trophic transfer was an
important bioaccumulation pathway for Cd, Cu, and Zn, while the importance of this pathway for Ag was less clear. Comparison with toxicity data suggests that plume zooplankton may experience sub-lethal toxic effects from Ag and Zn, however future work will be required to confirm or refute this hypothesis.
PhysicalDescription
Extent
x, 178 p. : ill.
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Note
(type = degree)
Ph.D.
Note
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Includes bibliographical references.
Note
(type = statement of responsibility)
by Derek D. Wright
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Wright
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Derek D.
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Derek D. Wright
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Reinfelder
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John
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chair
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Advisory Committee
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John R Reinfelder
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Sherrell
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Robert
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internal member
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Advisory Committee
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Robert Sherrell
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Rodenburg
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(type = given)
Lisa
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internal member
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Advisory Committee
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Lisa Rodenburg
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Frazer
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(type = given)
Thomas
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(authority = RULIB)
outside member
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Advisory Committee
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Thomas K Frazer
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Rutgers University
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degree grantor
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Graduate School - New Brunswick
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school
OriginInfo
DateCreated
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2008
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2008-10
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xx
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NjNbRU
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Title
Rutgers University Electronic Theses and Dissertations
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ETD
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TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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(type = local)
rucore19991600001
Subject
(authority = lcsh/lcnaf)
Geographic
New Jersey
Subject
(authority = lcsh/lcnaf)
Geographic
New York
Genre
(authority = ExL-Esploro)
ETD doctoral
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The author owns the copyright to this work.
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Open
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Non-exclusive ETD license
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Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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