Photosynthetic Characteristics of Some Freshwater Plankton Diatoms in Relation to Underwater Radiation

Talling, J. F.

doi:10.1111/j.1469-8137.1957.tb07447.x

Cited by 415 publications

(143 citation statements)

References 50 publications

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“…Most empirical models assume that respiration varies only with temperature (Talling 1957;Steel 1978). Ganf (1974) and Gibson (1975) showed that when algae are exposed to light before they are placed in darkness, the light treatment stimulates dark oxygen uptake.…”

Section: Discussionmentioning

confidence: 99%

Physiological ecology of a species of the filamentous green alga Mougeotia under acidic conditions: Light and temperature effects on photosynthesis and respiration

Graham

Arancibia-Ávila

Graham

1996

Limnology & Oceanography

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One of the earliest and most reliable indications of acid precipitation affecting freshwater systems is the development of littoral blooms of the filamentous green alga Mougeotia (Zygnematales, Charophyceae). Field observations of depth distribution and seasonal abundance in Little Rock Lake, an experimentally acidified seepage lake in north-central Wisconsin, suggest that Mougeotia might prefer warmer temperatures and carry out net photosynthesis at fairly low light levels. To test these hypotheses, we measured net photosynthesis and respiration at 56 combinations of irradiance and temperature in a controlled environment facility. Optimum conditions were 25°C and 300-2,300 bmol quanta m-2 s-I. Over this range, net photosynthesis averaged 40.4 mg 0, g-l h-l. Respiration rates increased with both temperature and prior irradiance. Lightenhanced respiration rates were significantly greater than dark respiration rates following irradiance 2 164 pm01 quanta m-* s-l. Mougeotia's photosynthetic response to temperature and irradiance explains aspects of its growth and distribution in acidified lakes but it does not by itself explain the magnitude of this alga's growth at low pH.Since the early 197Os, acidification of freshwater systems by acid precipitation has been increasingly recognized as a widespread and significant environmental problem. One of the earliest and most reliable indications of acid precipitation affecting freshwaters is the development of littoral blooms or mats of filamentous green algae of the family Zygnemataceae. The genus Mougeotia is one of the most common bloom-forming alga in acid waters of Europe and North America. Despite the frequency with which Mougeotia is cited as an indicator of acidification, little is known about its ecology or physiology. Why should Mougeotia rather than some other alga be so frequently associated with acidification? The most Acknowledgments

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Section: Discussionmentioning

confidence: 99%

Physiological ecology of a species of the filamentous green alga Mougeotia under acidic conditions: Light and temperature effects on photosynthesis and respiration

Graham

Arancibia-Ávila

Graham

1996

Limnology & Oceanography

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“…2). Isolation of the surveys which differed in terms of mean P P-E curves generated from 14 C production measurements were also quantified by calculation of E k as the ratio of P max to α (Talling 1957). Mean values of E k during the surveys conducted in June 1994 and November 1993 were relatively high compared to other months, and the standard error of the means indicated that E k was more variable during these periods (Fig.…”

Section: Temporal Variation Of Photosynthetic Parametersmentioning

confidence: 99%

Phytoplankton photosynthesis-irradiance parameters in the near-shore UK coastal waters of the North Sea: temporal variation and environmental control

Shaw¹,

Purdie²

2001

Mar. Ecol. Prog. Ser.

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“…Two photosynthetic parameters were determined in order to define the photosynthetic activity of D. salina under different environmental conditions: P,, the maximal rate of photosynthesis at light saturation, and Ik, the light intensity at which a photosynthetic rate numerically equal to P, would be reached in the absence of light saturation (Talling, 1957).…”

Section: Light Adaptation Experimentsmentioning

confidence: 99%

Ecophysiology of the Cyanobacterium Dactylococcopsis salina: Effect of Light Intensity, Sulphide and Temperature

Run¹,

Cohen²

1983

Microbiology

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~~~Dactylococcopsis salina is a planktonic gas-vacuolated cyanobacterium that forms a distinct bacterial plate at the metalimnion of Solar Lake, Sinai. Temperature, light intensity and sulphide concentration were examined as possible limiting factors determining the distribution of D. salina during the annual limnological cycle of Solar Lake. Both laboratory cultures and in situ samples were examined for their photosynthetic activity at a wide range of temperature, light intensity and sulphide concentrations. The cyanobacterium showed a considerable light adaptation and a capacity for photosynthetic activity at high light intensities. It also showed anoxygenic photosynthesis using H2S as an alternative electron donor, but this activity was only 4% of oxygenic photosynthesis. Furthermore, H2S was highly toxic to D. salina and no C 0 2 photoassimilation could be detected at pH 7 and 1 mM-sulphide. Temperature is the primary environmental factor governing the distribution of D. salina in Solar Lake.

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Photosynthetic Characteristics of Some Freshwater Plankton Diatoms in Relation to Underwater Radiation

Cited by 415 publications

References 50 publications

Physiological ecology of a species of the filamentous green alga Mougeotia under acidic conditions: Light and temperature effects on photosynthesis and respiration

Physiological ecology of a species of the filamentous green alga Mougeotia under acidic conditions: Light and temperature effects on photosynthesis and respiration

Phytoplankton photosynthesis-irradiance parameters in the near-shore UK coastal waters of the North Sea: temporal variation and environmental control

Ecophysiology of the Cyanobacterium Dactylococcopsis salina: Effect of Light Intensity, Sulphide and Temperature

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