Open Access Theses and Dissertations

Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for +publisher:"Virginia Commonwealth University" +contributor:("Len Smock"). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


Virginia Commonwealth University

1. Beckwith, Matthew. Coupling of autotrophic and heterotrophic plankton food web components in the tidal-freshwater James River, USA.

Degree: MS, Biology, 2009, Virginia Commonwealth University

URL: https://doi.org/10.25772/Z61W-GH24  ; https://scholarscompass.vcu.edu/etd/1706 

Empirical studies have shown that algal- and detrital-based food web components are coupled in many pelagic systems as algal carbon enhances bacterioplankton production and growth efficiencies. Such phyto-bacterioplankton coupling impacts carbon flow through plankton food webs, yet the extent of coupling is poorly understood in systems receiving large amounts of allochthonous carbon. To investigate this issue, bacterioplankton abundance (BA) and community composition were compared to chlorophyll a concentrations and phytoplankton production in the tidal-freshwater James River (VA). BA averaged 107 cells mL-1 and was significantly related to chlorophyll a, phytoplankton production, and DOC concentrations. Analysis of DOC quality using fluorescence spectroscopy revealed that the fulvic DOC fraction was dominated by allochthonous compounds. However, estimates of DOC C:N and DOC turnover rates indicated that DOC was more labile in the lower part of the study reach where BA was highest. T-RFLP analysis of 16s rDNA showed that bacterioplankton community composition significantly varied between the upper and lower portions of the sampling reach. These findings suggest that coupling of food web components is an important pathway affecting carbon cycling within the tidal-fresh water James River. Advisors/Committee Members: Paul Bukaveckas, Rima Franklin, John Anderson, Len Smock.

Subjects/Keywords: phytoplankton; bacterioplankton; Coupling; DOC; T-RFLP; Biology; Life Sciences

Record Details  Similar Records    Google PlusoneFacebookTwitterCiteULikeMendeleyreddit

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Beckwith, M. (2009). Coupling of autotrophic and heterotrophic plankton food web components in the tidal-freshwater James River, USA. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/Z61W-GH24 ; https://scholarscompass.vcu.edu/etd/1706

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Beckwith, Matthew. “Coupling of autotrophic and heterotrophic plankton food web components in the tidal-freshwater James River, USA.” 2009. Thesis, Virginia Commonwealth University. Accessed January 27, 2021. https://doi.org/10.25772/Z61W-GH24 ; https://scholarscompass.vcu.edu/etd/1706.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Beckwith, Matthew. “Coupling of autotrophic and heterotrophic plankton food web components in the tidal-freshwater James River, USA.” 2009. Web. 27 Jan 2021.

Vancouver:

Beckwith M. Coupling of autotrophic and heterotrophic plankton food web components in the tidal-freshwater James River, USA. [Internet] [Thesis]. Virginia Commonwealth University; 2009. [cited 2021 Jan 27]. Available from: https://doi.org/10.25772/Z61W-GH24 ; https://scholarscompass.vcu.edu/etd/1706.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Beckwith M. Coupling of autotrophic and heterotrophic plankton food web components in the tidal-freshwater James River, USA. [Thesis]. Virginia Commonwealth University; 2009. Available from: https://doi.org/10.25772/Z61W-GH24 ; https://scholarscompass.vcu.edu/etd/1706

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.