Three north central Texas reservoirs (Grapevine Reservoir, Lake Ray Hubbard, Lewisville Reservoir) were investigated in order to characterize the nutritional ecology, phytoplankton community structure, and primary productivity within the trophogenic zones of each. Emphasis was placed on elucidating the relative influences of the major nutrients (C, N, P, Fe, Si) and various other physico-chemical parameters on phytoplankton community biomass, structure, and productivity. Extensive physical, chemical, and biological analyses consisting of approximately eighty parameter measurements were made on each of twenty-three integrated water samples (surface to three meters) taken from the three reservoirs during the period July, 1971 to June, 1972. New methods which were employed included a high-intensity ultraviolet photocombustion procedure for the determination of total nitrogen, phosphorus, and iron, and an in vitro oxygen method for estimating community metabolism. General chemical and physical regimes are described for the three reservoirs, and various interrelationships discussed. Phytoplankton communities are delineated on bases of species composition, volume, diversity, pigments, and metabolism data. The more salient biotic and physico-chemical interrelationships are examined within the context of the limiting nutrient controversy.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc501178 |
| Date | 05 1900 |
| Creators | McDaniel, Michael David |
| Contributors | Silvey, J. K. G. (Joseph Kean Gwynn), 1907-1989, Vance, B. Dwain, Stewart, Kenneth W., Redden, David R., Roach, Archibald W. |
| Publisher | North Texas State University |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | ix, 174 leaves: ill., map, Text |
| Coverage | United States - Texas |
| Rights | Public, McDaniel, Michael David, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved. |
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