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Long-term Impacts of Changing Land-use Practices on Water Quality and Phytoplankton Assemblages in the Neuse Estuary Ecosystem, North Carolina
| Τίτλος: | Long-term Impacts of Changing Land-use Practices on Water Quality and Phytoplankton Assemblages in the Neuse Estuary Ecosystem, North Carolina |
|---|---|
| Συγγραφείς: | Rothenberger, Megan Beth |
| Συνεισφορές: | Thomas Wentworth, Committee Member, Cavell Brownie, Committee Member, JoAnn Burkholder, Committee Chair, Dave DeMaster, Committee Member |
| Έτος έκδοσης: | 2007 |
| Συλλογή: | North Carolina State University Libraries (NCSU): Digital Repository |
| Θεματικοί όροι: | Neuse Estuary, longitudinal regression, Neuse River Basin, ordination, phytoplankton, land use |
| Περιγραφή: | North Carolina State University Theses Plant Biology. ; The goal of this research was to build upon present understanding of the eutrophication process in the Neuse Estuary ecosystem by evaluating linkages among land use practices, nutrient concentrations and ratios, and phytoplankton assemblage composition. First, geographic Information Systems (GIS) analysis was used to characterize 26 sub-basins throughout the Neuse watershed for changes in land use over the past decade. GIS was also used in concert with multivariate statistics to synthesize and integrate ten years of land cover and water quality data into a conceptual model. Second, a continuous, decadal record of the phytoplankton in the mesohaline Neuse Estuary, in conjunction with synoptic measurement of environmental variables, provided a unique opportunity to evaluate responses of the phytoplankton assemblages to changing environmental conditions. Ordination techniques were used to investigate potential environmental predictors of phytoplankton community patterns through the process of eutrophication. Analyses indicated that over the past 10 years, total phosphorus concentrations were significantly higher during summer months in sub-watersheds with high densities of wastewater treatment plants (WWTPs) and confined swine feed operations. Nitrate concentrations were significantly higher during winter in sub-watersheds with high WWTP densities, and both inorganic and organic forms of nitrogen were significantly higher in sub-watersheds with greater agricultural land use. Ammonium concentrations were significantly higher after high-precipitation periods, but were not significantly correlated with the land-use parameters included in this study. In the Neuse Estuary, among several important findings, abundance of the potentially toxic, bloom-forming dinoflagellate Prorocentrum minimum was positively related to low water temperatures (winter⁄spring) and organic nitrogen and suspended solids concentrations. In addition, abundance of other potentially toxic ... |
| Τύπος εγγράφου: | other/unknown material |
| Περιγραφή αρχείου: | Thesis (Ph.D.)--North Carolina State University.; application/pdf |
| Γλώσσα: | unknown |
| Relation: | http://www.lib.ncsu.edu/resolver/1840.16/4547 |
| Διαθεσιμότητα: | http://www.lib.ncsu.edu/resolver/1840.16/4547 |
| Rights: | I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
| Αριθμός Καταχώρησης: | edsbas.59DA9BBA |
| Βάση Δεδομένων: | BASE |
| FullText | Text: Availability: 0 CustomLinks: – Url: http://www.lib.ncsu.edu/resolver/1840.16/4547# Name: EDS - BASE (ns324271) Category: fullText Text: View record from BASE |
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| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Long-term Impacts of Changing Land-use Practices on Water Quality and Phytoplankton Assemblages in the Neuse Estuary Ecosystem, North Carolina – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Rothenberger%2C+Megan+Beth%22">Rothenberger, Megan Beth</searchLink> – Name: Author Label: Contributors Group: Au Data: Thomas Wentworth, Committee Member<br />Cavell Brownie, Committee Member<br />JoAnn Burkholder, Committee Chair<br />Dave DeMaster, Committee Member – Name: DatePubCY Label: Publication Year Group: Date Data: 2007 – Name: Subset Label: Collection Group: HoldingsInfo Data: North Carolina State University Libraries (NCSU): Digital Repository – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Neuse+Estuary%22">Neuse Estuary</searchLink><br /><searchLink fieldCode="DE" term="%22longitudinal+regression%22">longitudinal regression</searchLink><br /><searchLink fieldCode="DE" term="%22Neuse+River+Basin%22">Neuse River Basin</searchLink><br /><searchLink fieldCode="DE" term="%22ordination%22">ordination</searchLink><br /><searchLink fieldCode="DE" term="%22phytoplankton%22">phytoplankton</searchLink><br /><searchLink fieldCode="DE" term="%22land+use%22">land use</searchLink> – Name: Abstract Label: Description Group: Ab Data: North Carolina State University Theses Plant Biology. ; The goal of this research was to build upon present understanding of the eutrophication process in the Neuse Estuary ecosystem by evaluating linkages among land use practices, nutrient concentrations and ratios, and phytoplankton assemblage composition. First, geographic Information Systems (GIS) analysis was used to characterize 26 sub-basins throughout the Neuse watershed for changes in land use over the past decade. GIS was also used in concert with multivariate statistics to synthesize and integrate ten years of land cover and water quality data into a conceptual model. Second, a continuous, decadal record of the phytoplankton in the mesohaline Neuse Estuary, in conjunction with synoptic measurement of environmental variables, provided a unique opportunity to evaluate responses of the phytoplankton assemblages to changing environmental conditions. Ordination techniques were used to investigate potential environmental predictors of phytoplankton community patterns through the process of eutrophication. Analyses indicated that over the past 10 years, total phosphorus concentrations were significantly higher during summer months in sub-watersheds with high densities of wastewater treatment plants (WWTPs) and confined swine feed operations. Nitrate concentrations were significantly higher during winter in sub-watersheds with high WWTP densities, and both inorganic and organic forms of nitrogen were significantly higher in sub-watersheds with greater agricultural land use. Ammonium concentrations were significantly higher after high-precipitation periods, but were not significantly correlated with the land-use parameters included in this study. In the Neuse Estuary, among several important findings, abundance of the potentially toxic, bloom-forming dinoflagellate Prorocentrum minimum was positively related to low water temperatures (winter⁄spring) and organic nitrogen and suspended solids concentrations. In addition, abundance of other potentially toxic ... – Name: TypeDocument Label: Document Type Group: TypDoc Data: other/unknown material – Name: Format Label: File Description Group: SrcInfo Data: Thesis (Ph.D.)--North Carolina State University.; application/pdf – Name: Language Label: Language Group: Lang Data: unknown – Name: NoteTitleSource Label: Relation Group: SrcInfo Data: http://www.lib.ncsu.edu/resolver/1840.16/4547 – Name: URL Label: Availability Group: URL Data: http://www.lib.ncsu.edu/resolver/1840.16/4547 – Name: Copyright Label: Rights Group: Cpyrght Data: I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. – Name: AN Label: Accession Number Group: ID Data: edsbas.59DA9BBA |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=edsbas&AN=edsbas.59DA9BBA |
| RecordInfo | BibRecord: BibEntity: Languages: – Text: unknown Subjects: – SubjectFull: Neuse Estuary Type: general – SubjectFull: longitudinal regression Type: general – SubjectFull: Neuse River Basin Type: general – SubjectFull: ordination Type: general – SubjectFull: phytoplankton Type: general – SubjectFull: land use Type: general Titles: – TitleFull: Long-term Impacts of Changing Land-use Practices on Water Quality and Phytoplankton Assemblages in the Neuse Estuary Ecosystem, North Carolina Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Rothenberger, Megan Beth – PersonEntity: Name: NameFull: Thomas Wentworth, Committee Member – PersonEntity: Name: NameFull: Cavell Brownie, Committee Member – PersonEntity: Name: NameFull: JoAnn Burkholder, Committee Chair – PersonEntity: Name: NameFull: Dave DeMaster, Committee Member IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Type: published Y: 2007 Identifiers: – Type: issn-locals Value: edsbas |
| ResultId | 1 |