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Boron/Calcium in planktonic foraminifera
Descriptive
TitleInfo
Title
Boron/Calcium in planktonic foraminifera
SubTitle
proxy development and application to the Paleocene-Eocene boundary
TitleInfo
(type = alternative)
Title
Boron in planktonic foraminifera
Name
(type = personal)
NamePart
(type = family)
Babila
NamePart
(type = given)
Tali Lea
NamePart
(type = date)
1984-
DisplayForm
Tali Babila
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Rosenthal
NamePart
(type = given)
Yair
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Yair Rosenthal
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Wright
NamePart
(type = given)
James
DisplayForm
James Wright
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Miller
NamePart
(type = given)
Kenneth
DisplayForm
Kenneth Miller
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Honisch
NamePart
(type = given)
Barbel
DisplayForm
Barbel Honisch
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(qualifier = exact)
2014
DateOther
(qualifier = exact);
(type = degree)
2014-01
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Abstract
(type = abstract)
Climate transitions on recent and geologic timescales are linked to perturbations in atmospheric carbon dioxide concentrations (pCO2). Records of ocean carbonate chemistry allow us to investigate the role of CO2 during past climate events but are limited by the availability of paleo-proxies. This thesis presents the development and calibration of Boron/Calcium (B/Ca) in planktonic foraminifera as a proxy for surface ocean carbonate chemistry from sediment traps and modern surface sediments. The B/Ca proxy is then used to reconstruct surface ocean acidification across the Paleocene-Eocene boundary (~55.8 Myr). Observations of B/Ca in the surface dwelling planktonic foraminifer Globigerinoides ruber white from the Oceanic Flux Program (OFP) sediment trap time-series located near Bermuda are used to suggest that the photosynthetic activity of symbiotic algae within the living foraminifer modify the internal pH relative to the ambient seawater, thereby influencing the B/Ca recorded in the calcitic test (Chapter Two). I hypothesize that the apparent covariance between G. ruber B/Ca and the temperature at the OFP site is due to the seasonal change in incident light affecting the symbiont activity, which can increase the internal pH during calcification from seawater by ~0.2-0.3 units. Measurements of B/Ca and δ11B in different species of planktonic foraminifera from globally distributed core-top sediments reveal that symbiotic foraminifera are offset from the theoretically predicted equilibrium with seawater (Chapter Three). I find no significant temperature effect on B/Ca and the departure from equilibrium for symbiont-bearing species is attributed to biological effects. I provide empirical calibrations for thermocline and deep-dwelling planktonic foraminifera as being primarily controlled by seawater [(〖"B(OH)" 〗_"4" ^"-" )⁄(〖"HCO" 〗_"3" ^"-" )]. Paired isotopic (δ13C, δ18O) and elemental (Mg/Ca, B/Ca) measurements are applied to reconstruct the relative timing and magnitude of environmental changes across the Paleocene-Eocene boundary, occurring ~55.8 Myr using sections from ODP Leg 174AX sites at Bass River and Ancora. Reconstructions of ocean temperature (Mg/Ca) and carbonate chemistry (δ13C and B/Ca) from planktonic foraminifera document an abrupt and significant decrease in B/Ca ratios, coincident with δ13C records and the concomitant ~6-8°C warming. The synchronous changes in all three proxies do not support the occurrence of significant precursor warming or carbon release argued elsewhere.
Subject
(authority = RUETD)
Topic
Oceanography
RelatedItem
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD
Identifier
ETD_5296
PhysicalDescription
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electronic resource
InternetMediaType
application/pdf
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text/xml
Extent
xviii, 140 p. : ill.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = statement of responsibility)
by Tali Lea Babila
Subject
(authority = ETD-LCSH)
Topic
Foraminifera
Subject
(authority = ETD-LCSH)
Topic
Seawater--Carbon dioxide content
Subject
(authority = ETD-LCSH)
Topic
Climatic changes--Environmental aspects
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
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rucore19991600001
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NjNbRU
Identifier
(type = doi)
doi:10.7282/T3Z31WRT
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
RightsDeclaration
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The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Babila
GivenName
Tali
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2014-01-06 00:19:55
AssociatedEntity
Name
Tali Babila
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
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.
RightsEvent
DateTime
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2014-01-31
DateTime
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2016-01-31
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after January 31st, 2016.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical
RULTechMD
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ContentModel
ETD
OperatingSystem
(VERSION = 5.1)
windows xp
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