Some Plankton Relationships in a Small Unpolluted Stream

Lackey, James B.; Wattie, Elsie; Kachmar, John F.; Placak, O. R.

doi:10.2307/2421288

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…In addition, we consistently found relatively high levels of suspended chlorophyll a on small tributaries of the Skunk River where the length of the river upstream was so short that the residence time of the water in the stream would be too short to enable a strictly planktonic population to develop. Lackey et al ( 1943) found a similar situation in a small stream in an agricultural area.…”

Section: Resultssupporting

confidence: 62%

A Model of Algal Exports in Some Iowa Streams

Swanson¹,

Bachmann²

1976

Ecology

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The rivers of central Iowa carry high densities of suspended algae. Evidence is presented to support the hypothesis that these plants are derived from benthic populations on the streambed. In an analysis of several streams, a significant correlation was found between the amounts of algal chlorophylls being exported downstream and the areas of the wetted streambed upstream from the sampling points. In the warm months the algal exports amounted to 4.5 mg°m(—2)°day(—1) of chlorophyll a.

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Section: Resultssupporting

confidence: 62%

A Model of Algal Exports in Some Iowa Streams

Swanson¹,

Bachmann²

1976

Ecology

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“…Juday and Birge ( 1931) noted that soluble phosphate remained undiminished in surface waters of the Wisconsin lakes, many of which are high producers of plankton. Lackey et al (1943,) correlated noticeable decreases in phosphate with sharp decreases in plankton at some stations but found an abundance of plankton despite the absence of detectable phosphate at other stations. Thus, there is a question concerning phosphorus as a limiting factor.…”

Section: Carbon Dioxide Alkalinity and Hydrogen Ion Relationshipsmentioning

confidence: 89%

“…Ludzack, Ingram, and Icttinger ( 1957), in a study of the Ottawa River, observed that a petrochemical effluent had a marked effect on the alkalinity, causing an increase in pH from 7.5 to 8.6. Thus, it is possible that the oil pollutant caused an increase in pII in Muddy River, Nitrate, nitrite, and phosphate relationships Nitrate, nitrite, and phosphate are generally considered to be critical for the development of plankton ( Lackey et al 1943)) but there are conflicting reports concerning correlations between the presence of these substances in natural waters and productivity.…”

Section: Carbon Dioxide Alkalinity and Hydrogen Ion Relationshipsmentioning

confidence: 99%

The Biological Effects of Oil Pollution in a River1

McCauley¹

1966

Limnology & Oceanography

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Physical, chemical, and biological conditions in the water and sediments of Muddy River, Massachusetts, were observed from autumn 1961 through summer 1963 to determine the effects of oil pollution on biological activity. Samples from above, in, and below the polluted area were collected and analyzed. The heavy bunker oil pollutant formed a thin partial film on the surface of the water that partially excluded the oxygen from the water but not sufficiently to destroy developing plankton. Low biochemical oxygen demand correlated with consistently high concentrations of oil in the sludge in the polluted region indicating slow decomposition of the oil by microorganisms. The oil was markedly toxic to the plankton and to the macrofauna of the sediments. The following plankters tolerated the pollution even during periods of highest oil concentration: Lyngbya, Oscillatoria, Ankistrodesmus, Chlamydomonas, Closterium, Gonium, Scenedesmus, Asterionella, Cyclotella, Fragilaria, Meridion, Navicula, Tabellaria, Euglena, Trachelomonas, Vorticella, Asplanchna, Keratella, Polyarthra, Cyclops, and Nemata types. In the sediments, Gammarus, Agrion nymphs, and Dugesia were unable to tolerate conditions in the region of oil pollution while Tubifex, Tendipes larvae, Nemata, and Hirudinca types were tolerant and remained.

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“…Domestic sewage has frequently been assumed to be the principal factor increasing plankton production in streams (8)(9)(10)(11), but this has not been conclusively proved, and recent studies (12,13) have shown that enormous quantities of plankton may be present in small streams and rivers which either receive no sewage or are far removed from sewage pollution. It is almost impossible to separate the effects of domestic sewage from those of trade wastes for the following reasons: [1] there are few communities capable of adding effective amounts of sewage which do not also contribute some industrial pollutants, and [2] the specific effects of most trade wastes upon plankton are still largely unknown.…”

Section: ----Lames B Lackey and Eugene R Hupp----mentioning

confidence: 99%