RUcore: Rutgers University Community Repository
Assessing multiple indicators of nutrient limitation in marine phytoplankton on the Louisiana continental shelf
Descriptive
TitleInfo
(type = uniform)
Title
Assessing multiple indicators of nutrient limitation in marine phytoplankton on the Louisiana continental shelf
Name
(type = personal)
NamePart
(type = family)
Sylvan
NamePart
(type = given)
Jason B.
DisplayForm
Jason B. Sylvan
Role
RoleTerm
(authority = RUETD)
author
Name
(type = personal)
NamePart
(type = family)
Ammerman
NamePart
(type = given)
James
Affiliation
Advisory Committee
DisplayForm
James W Ammerman
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Kerkhof
NamePart
(type = given)
Lee
Affiliation
Advisory Committee
DisplayForm
Lee J Kerkhof
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Seitzinger
NamePart
(type = given)
Sybil
Affiliation
Advisory Committee
DisplayForm
Sybil P Seitzinger
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Vetriani
NamePart
(type = given)
Costantino
Affiliation
Advisory Committee
DisplayForm
Costantino Vetriani
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Dyhrman
NamePart
(type = given)
Sonya
Affiliation
Advisory Committee
DisplayForm
Sonya T Dyhrman
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)
2008
DateOther
(qualifier = exact);
(type = degree)
2008-01
Language
LanguageTerm
English
PhysicalDescription
Form
(authority = marcform)
electronic
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
xv, 165 pages
Abstract
(type = abstract)
Eutrophication on the Louisiana continental shelf is driven by excess nitrogen (N) and phosphorus (P) delivered by the Mississippi River. While the eutrophication is driven primarily by excess nitrogen, scattered data going back to the early 1990's suggests that the ecosystem on the Louisiana shelf may be seasonally P-limited in the spring and early summer during high runoff periods, primarily in areas of intermediate salinity. These intermediate salinity zones are also the areas where chlorophyll biomass and primary productivity are often maximal. This production likely drives the annual bottom water hypoxia in the region, known in the popular press as the "dead zone." Three very different methods were used to address the question of nutrient limitation on the Louisiana shelf. In July 2002, a Fast Repetition Rate fluorometer (FRRf) was used in conjunction with nutrient addition bioassays and mapping of surface water parameters to examine the response of the phytoplankton community to eutrophication. In incubations, chlorophyll a biomass responded to phosphorus additions, but not those of N alone and FRRf parameters indicated a positive response to P additions in the way of higher efficiency in photosystem II. The mapping data was more heterogeneous in nature, but overall patterns indicated that P limited phytoplankton biomass. Three cruises in March, May and July 2004 were conducted in order to investigate seasonal patterns of dissolved inorganic, dissolved organic, and particulate nutrients on the Louisiana shelf. The combination of low P concentrations, high inorganic and total N:P ratios and high alkaline phosphatase activities indicated P limitation of phytoplankton biomass on the Louisiana shelf during the spring and early summer of 2004. A study of pstS, a gene induced under P-stress, revealed that its distribution in oceanic waters is related to location of the sample. The pstS gene in Synechococcus spp. taken from various sites around the world clustered on a phylogenetic tree closest to other sequences taken nearby. The combination of FRRf, nutrient data, enzyme assays and molecular markers of P-limitation strongly confirm seasonal P-limitation on the Louisiana continental shelf in the spring and early summer, driven by extreme N loads during these seasons.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references (p. 108-121).
Subject
(authority = RUETD)
Topic
Oceanography
Subject
(authority = ETD-LCSH)
Topic
Phytoplankton--Louisiana
Subject
(authority = ETD-LCSH)
Topic
Nutrient pollution of water--Louisiana
Subject
(authority = ETD-LCSH)
Topic
Continental shelf--Louisiana
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
(type = local)
rucore19991600001
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17226
Identifier
ETD_628
Identifier
(type = doi)
doi:10.7282/T3BP0344
Location
PhysicalLocation
(authority = marcorg);
(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Subject
(authority = lcsh/lcnaf)
Geographic
Louisiana
Genre
(authority = ExL-Esploro)
ETD doctoral
Back to the top
Rights
RightsDeclaration
(AUTHORITY = GS);
(ID = rulibRdec0006)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
AssociatedEntity
(AUTHORITY = rulib);
(ID = 1)
Name
jason sylvan
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
RightsEvent
(AUTHORITY = rulib);
(ID = 1)
Type
Permission or license
Detail
Non-exclusive ETD license
AssociatedObject
(AUTHORITY = rulib);
(ID = 1)
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.
Back to the top
Technical
Format
(TYPE = mime);
(VERSION = )
application/x-tar
FileSize
(UNIT = bytes)
2042880
Checksum
(METHOD = SHA1)
6bdb177377e1da3f054a020c1ec5d0f62038da5b
ContentModel
ETD
CompressionScheme
other
OperatingSystem
(VERSION = 5.1)
windows xp
Format
(TYPE = mime);
(VERSION = NULL)
application/x-tar
Back to the top
Statistical Profile