Production dynamics in the phytoplankton community of a mesotrophic Texas reservoir were measured weekly over a four month period using 14C incubation and ATP assay methodologies. Assimilation values of 14C ranged from 0.2 to 45 ug C 1 hr1 - . Significant positive and occasionally negative changes in biomass (i.e. viable organic carbon) were observed in short term (4 hr) in situ incubations juxtapo-sitioned with the 14C experiments; viable organic carbon production, estimated with the ATP assay, ranged from -25 to +50 ug C 1l1hr1. Carbon assimilation and biomass changes did not correlate in either short term (4-5 hr.) or over the study period (6 months). However, weekly biomass trends were predicted by relative positive or negative biomass changes in the short term incubations. Biomass measurements gave a more sensitive insight into production dynamics in the phytoplankton community than did carbon assimilation measurements.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc503843 |
| Date | 12 1900 |
| Creators | Wilcox, Douglas P. |
| Contributors | Stanford, Jack Arthur, 1947-, Silvey, J. K. G. (Joseph Kean Gwynn), 1907-1989, Zimmerman, Earl G., Vance, B. Dwain |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | vii, 86 leaves : ill., Text |
| Coverage | United States - Texas |
| Rights | Public, Wilcox, Douglas P., Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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