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A comparative evaluation of residual energy balance, Penman, and Penman-Monteith estimates of daytime variation of evapotranspirationOrtega-Farias, Samuel Orlando 28 September 1993 (has links)
Graduation date: 1994
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Trophic Structure and Energy Flow in a Texas PondChildress, William M. 08 1900 (has links)
Annual energy flow and mean annual biocontent of eighteen compartments were determined for a 0.94 ha north central Texas pond ecosystem. Annual primary production was 7,780 kcal m^-2 yr^-2, and community production-to-respiration ratio was 1.49. One-third of annual primary production accumulated on the substrate as silt and sedimentation. Community production, production-respiration ratio, and biocontents of all compartments except aquatic insects were large in summer, small in winter. Biocontents of four trophic levels in the pond were all of the same order of magnitude, approximately 50 kcal m^-2. Suspended and benthic organic material forprimary consumers and terrestrial insects for tertiary consumers were substantial allochthanous energy imports into the pond system.
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