Effects of Substrate Biodegradability on the Mass and Activity of the Associated Estuarine Microbiota

Bobbie, Ronald J.; Morrison, Susan J.; White, David C.

doi:10.1128/aem.35.1.179-184.1978

Cited by 30 publications

(15 citation statements)

References 10 publications

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“…Because of their uniform construction, artificially introduced substrata produce statistically more reliable data and allow the age of the fouling community to be known (4). The composition of the substratum may affect the activity of attached cells (2,19). In addition, it is difficult to obtain direct cell counts of bacteria attached to particulates.…”

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confidence: 99%

Activity Measurements of Planktonic Microbial and Microfouling Communities in a Eutrophic Estuary

Jeffrey

Paul

1986

Appl Environ Microbiol

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3H]thymidine incorporation, the rate of reduction of iodonitrotetrazolium violet (INT) to INT formazan normalized to DNA, and the ratio of ATP to DNA were adapted to measure the activity of attached and unattached microbial assemblages of Bayboro Harbor, Fla. Activity measurements by [3H]thymidine incorporation were made of cells attached to polystyrene culture dishes, in unfiltered water samples, and in the l-pm fraction were higher than those for cells either in unfiltered water or in the

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confidence: 99%

Activity Measurements of Planktonic Microbial and Microfouling Communities in a Eutrophic Estuary

Jeffrey

Paul

1986

Appl Environ Microbiol

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“…Nutrient regeneration and wind-mixed currents are correlated with outbursts of phytoplankton production. Particulate organic matter in the bay undergoes a succession of microbial decomposition , Bobbie et al 1978. Grazing of the Vol.…”

Section: The Middle Yearsmentioning

confidence: 99%

Historical Relationships Between Research and Resource Management in the Apalachicola River Estuary

Livingston¹

1991

Ecological Applications

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A continuous field research effort has been carried out in the Apalachicola River estuary since March 1972. The information generated from this interdisciplinary study has been directly applied to the management of the Apalachicola resource by means of close associations among local, state, and federal officials and university scientists. During the early years, scientific data were instrumental in the prevention of the impoundment of the Apalachicola River. A series of regional studies was carried out to evaluate various forms of effects due to forestry activities, pesticides, and stormwater runoff from urban areas. A review was made of fisheries problems associated with dredging, overfishing, and marine pollution. Results of such studies were directly applied to local management questions. Research that linked the river wetlands with the estuary, in terms of the input of fresh water, nutrients, and organic matter, served as the basis for the purchase of extensive bottomland tracts. Other initiatives were carried out that were designed to protect the naturally high productivity of the river estuary. Further purchases of estuarine wetlands and barrier island properties were made that formed an almost continuous buffer of publicly held lands between upland developments and critical habitats and important populations of the bay system. A regional management plan was adopted that was designed to limit local municipal development in the estuarine region. Analyses of the long-term scientific data indicated that dominant, commercially important estuarine populations are associated with river flow, local salinity characteristics, and biological (predation, competition) interactions with the salinity regime and food web structure. Such interactions are not straight forward, however; they reflect complex interactions of the freshwater influxes and biological response in the estuary that are not well understood. Species-specific responses to the principal driving factors further complicate the biological relationships of the Apalachicola system. The management of a river-dominated estuary should be based on protection and control of freshwater sources, nutrients, and organic matter with a minimization of physical alterations that often lead to increased salinity stratification and the associated loss of the nursery function of the estuary. There is growing evidence that changes in upland characteristics and within-system habitat alterations are associated with changes in nutrient distributions and salinity relationships and that such changes can have serious impacts on estuarine systems. Issues involving basic changes in estuarine productivity and associated food webs are far more important than those involving species diversity in the management of such resources. Processes such as nutrient flow and salinity alteration underlie the very basis of estuarine productivity and usefulness. Over the past decade, there has been a gradual reduction in the importance of research as an integral part of the planning and management pr...

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“…With these techniques it has been possible to show succession in marine biofouling films (Morrison et al 1977;Nickels et al 1981a1, the effects of substratum biodegradability (Bobbie et al 1978), the effects of substratum microtopology (Nickels et al 1981b), the effects of mechanical disturbance (Nickels et al 1981~1, the effects of amphipod grazing and resource partitioning (Morrison and White 1980;Smith et al 1982a), the effects of sand dollar bioturbation and predation (Findlay and White 1983a), the effects of essential elemental chelation (Nickels et al 1979), and the effects of light (Bobbie et al 1981) on microbial consortia.…”

Section: /Whitementioning

confidence: 99%

Environmental effects testing with quantitative microbial analysis: Chemical signatures correlated with in situ biofilm analysis by FT/IR

White

1986

Environ. Toxicol. Water Qual.

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Chemical measures for the biomass, community structure, nutritional status, and metabolic activities of the microbiota have shown a remarkable responsiveness to changes in the bulk fluid physical and chemical properties, the chemistry, biodegradability, and microtopology of the surfaces, as well as biological factors such as predation. Chemical analysis of the microbiota (bacteria, algae, fungi, protozoa, and micrometazoa with their extracellular products <0.5mm in diameter) does not require quantitative release of the organisms from surfaces or that the organisms are able to form colonies in subcultures. The sensitivity of the microbiota to changes in their habitat suggests that these chemical measures could provide a quantitative method for environmental effects testing. Changes in the marine benthic microbiota exposure to xenobiotics at the ug/l level or oil and gas well‐drilling fluids demonstrate this sensitivity. These analyses do not destroy the vital interactions within microcolonies of mixed physiological types that characterize many environments. The chemical measures are destructive. Non‐destructive analysis of biofilms of areas in the size range of microcolonies by Fourier transforming infrared spectrometry may ultimately provide the most effective method for environmental effects testing.

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Effects of Substrate Biodegradability on the Mass and Activity of the Associated Estuarine Microbiota

Cited by 30 publications

References 10 publications

Activity Measurements of Planktonic Microbial and Microfouling Communities in a Eutrophic Estuary

Activity Measurements of Planktonic Microbial and Microfouling Communities in a Eutrophic Estuary

Historical Relationships Between Research and Resource Management in the Apalachicola River Estuary

Environmental effects testing with quantitative microbial analysis: Chemical signatures correlated with in situ biofilm analysis by FT/IR

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