Photorespiration and release of organic carbon in submersed aquatic vascular plants

Hough, R. Anton

doi:10.2172/4426174

1973

DOI: 10.2172/4426174

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Photorespiration and release of organic carbon in submersed aquatic vascular plants

R. Anton Hough

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1979

1980

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Cited by 2 publications

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References 59 publications

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“…Hough (38 and 40) Hough and Wetzel, 1972 (47) Wetzel (41) Wetzel, et al, 1972 Wetzel and Hough, 1973 Wetzel, 1980 (142) and (152) Francko (151) Francko, 1980 Crumpton and Wetzel, 1980 (157) 3.…”

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Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1979-30 June 1980

Wetzel¹

1980

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The exponentially increasing exploitation of existing fossil fuel resources has exerted unprecedented pressure upon the freshwater environment, both immediately adjacent to and remote from sites of acquisition. Many effects are direct and immediate, e_.j». carriage and dispersion of spoilage, contamination of surface and groundwaters with mobilized metals, nutrients, and organic compounds. Other effects are displaced and delayed, £.£. thermal enrichment of surface waters resulting from combustion and shifting rates of mobility, dissocation, and degradation of inorganic and organic compounds. It is important that a^ firm understanding of biogeochemical cycling and control mechanisms be known in order to fully evaluate the impact of necessary utilization of fossil fuel upon surface waters.

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confidence: 99%

Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1979-30 June 1980

Wetzel¹

1980

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“…Publications of this contract pertaining to these facets: Wetzel, 1969 7Wetzel, 1969 (8) Allen, 1969 (17) Wetzel and Allen, 1971 (19) Allen, 1971 30Rich , Wetzel, and Thuy, 1971 20Hough and Wetzel, 1972 (38 and 40) Hough and Wetzel, 1972 (47) Wetzel (41) Wetzel, et al, 1972 Wetzel and Hough, 1973 (54) Hough, 1973 (59) Hough, 1974 66Hough and Wetzel, 1974 (62) Hough and Wetzel, 1975 (69 and 74) Barko, Murphy, and Wetzel, 1976 (79) Wetzel, 1977 (80) Wetzel, 1976 (86) McKinley and Wetzel, 1976 (83) McKinley, Ward, and Wetzel, 1977 (93) Hough and Wetzel, 1976 (89) Hough and Wetzel, 1977 (97) - Hough and Wetzel, 1978 (105) - Wetzel, 1979 (112) Grace and Wetzel, 1978 (113) Wetzel and Penhale, 1979 (119) - Wetzel, 1979 (124) Stfndergaard and Wetzel, 1979 (134) COO-1599-153 (Part 1)…”

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Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1978--30 Jun 1979

Wenzel¹

1979

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Department of Energy, however, continues to be the primary sponsor that permits the integrated program to function effectively. I summarize salient aspects of these investigations, much of which is treated in detail in the accompanying publications, preprints, and manuscripts of the current term. Several phases of the studies have been completed, analyses are finished, and the results are being interpreted. Other aspects, such as metabolism of wetland macro-and microflora, chemical loading dynamics and interactions of nutrients, etc. are continuing. Certain facets of the investigations discussed in the last Annual Reports (COO-1599-125 and COO-1599-139) are briefly reiterated here for continuity. Integrated Programs in Progress on Organic Biogeochemistry and Lake Metabolism These continuing investigations focus on integrated studies of the qualitative and quantitative cycling and metabolism of particulate and dissolved organic carbon in lakes and their inflow sources (surface and subsurface). Emphasis is placed on the sources, fates, and interactions of dissolved and particulate organic matter in relation to: (a) inorganic chemical cycling, (b) allochthonous loading to the lake system, and (c) the coupled nutrient physiology and metabolism of phytoplankton, bacterial populations, macrophytes, and attendant sessile algal-bacterial communities. Regulatory mechanisms of growth and rates of carbon and nutrient cycling are being evaluated among the (a) inorganic-organic influxes of allochthonous sources as they are controlled by wetland-littoral communities, (b) the littoral photosynthetic producer-decomposer complex, and (c) the microflora of the pelagial zone. Quantification of carbon fluxes among these components and control mechanisms is fundamental to elucidation of the rate functions of lake eutrophication. The integrated studies addressing these multifaceted objectives are summarized in the following three summary diagrams. Personnel working with the P. I. are indicated parenthetically. 1. Algal organic excretion: seasonal periodicity and utilization by microflora (Wetzel, McKinley) 2. H eterotrophic and photoheterotrophic utilization of dissolved organic substrates by algae (McKinley, Wetzel) 3. Absolute sodium requirement of blue-green algae and control of population dynamics in hardvmter lakes of low Na content 3. (Ward, Wetzel) k. Spatial phytoplanktonic distribution and metabolism in relation to allochthonous and littoral nutrient influxes (Stewart, Wetzel) 5. Interrelationships of light and inorganic nitrogen availability on Ng fixation, NOo reduction, and excretion of dissolved organic nitrogen on the physiology add competitive productivity of blue-green algae of oligotrophic and eutrophic hardwater lakes (Ward, Wetzel) 6. Alkaline phosphatase activity of water and phytoplankton in situ annually and in response to inorganic and organic phosphorus loading (Wetzel) 7. Monophosphate esters and other organic phosphorus compunds, including cyclic ' AMP: distribution, in situ synthesis, and utilization by alga...

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Photorespiration and release of organic carbon in submersed aquatic vascular plants

Cited by 2 publications

References 59 publications

Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1979-30 June 1980

Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1979-30 June 1980

Dissolved organic matter and lake metabolism. Technical progress report, 1 July 1978--30 Jun 1979

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