Buoyancy regulation and vertical migration by<i>Oscillatoria rubescens</i>in Crooked Lake, Indiana

Konopka, Allan

doi:10.1080/00071618200650451

Cited by 50 publications

(26 citation statements)

References 19 publications

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“…Turgor pressure increase in this organism could be correlated with a light-dependent accumulation of photosynthates (Grant and Walsby 1977) and a light-dependent buildup of potassium ions (Allison and Walsby 198 1). Although several workers (Reynolds 1972;Konopka et al 1978;Konopka 1982) have shown a correlation between a turgor pressure rise and buoyancy loss in the cells of various cyanobacteria, the relation between increased turgor pressure and collapse of gas vesicles was not established.…”

Section: Discussionmentioning

confidence: 99%

Carbohydrate fluctuations, gas vacuolation, and vertical migration of scum‐forming cyanobacteria in fishponds1

Rijn

Shilo

1985

Limnology & Oceanography

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Natural populations of the scum-forming cyanobacteria Oscillatoria, Spirulina, and Microcystis showed a diel vertical migration pattern in fishponds. This migration was governed by two factors, light and nitrogen. Light penetrates only into the upper layers of these shallow waterbodies, while combined nitrogen is detectable only in the pond sediment. Migration between these two layers was correlated with cellular carbohydrate accumulation at the top layer and its degradation at the bottom. Gas-vacuole collapse was not mediated by turgor pressure and gas vesicles re-formed at an extremely slow rate. Thus it seems likely that a change in ballast due to carbohydrate loading at the lighted surface and unloading at the dark, nitrogen-rich bottom actively influences vertical migration.

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Section: Discussionmentioning

confidence: 99%

Carbohydrate fluctuations, gas vacuolation, and vertical migration of scum‐forming cyanobacteria in fishponds1

Rijn

Shilo

1985

Limnology & Oceanography

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“…during fall entrainment could be explained by growth-limiting dilution of DPconcentrations (Walsby and Schanz, 2002), or by competition with A. flosaquae, which became very abun- The late spring and summer metalimnetic growth of both, P. agardhii and P. rubescens, is well documented across different continents, mainly in deep subalpine European lakes and in small lakes and reservoirs (Klemer, 1976;Konopka, 1982;Ramón and Moyá, 1984;Ruggiu and Mosello, 1984;Micheletti et al, 1998;Salmaso, 2000;Jacquet et al, 2005;Kangro et al, 2005;Halstvedt et al, 2007). In lake Bromont, the growth and persistence of Planthothrix spp.…”

Section: Cyanobacterial Structurementioning

confidence: 99%

Importance of climate change-physical forcing on the increase of cyanobacterial blooms in a small, stratified lake

Planas

Paquet

2016

J Limnol

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“…There are accounts of filamentous cyanobacteria forming metalimnetic populations in a number of thermally stratified temperate lakes (Eberly, 1964 ;Baker & Brook, 1969 ;Zimmermann, 1969 ;Klemer, 1976 ;Rott, 1976 ;Konopka, 1982 ;Walsby et al, 1983 ;Feuillade, 1994). Eberly (1964) observed that high concentrations of oxygen were associated with metalimnetic populations of Oscillatoria agardhii in McLish Lake, Indiana, and that the maximum rates of oxygen production in the metalimnion could exceed the highest rates in the epilimnion.…”

Section: Factors Determining the Photosynthetic Integralsmentioning

confidence: 99%

The daily integral of photosynthesis by Planktothrix rubescens during summer stratification and autumnal mixing in Lake Zürich

1998

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It has been suggested that the populations of planktonic cyanobacteria that occupy the metalimnion of stratified lakes during the summer months may be aestivating between the main periods of growth during entrainment in the epilimnion in spring and summer. We determined the vertical distribution of the biomass and daily integral of photosynthesis of the population of Planktothrix (Oscillatoria) rubescens in Lake Zu$ rich for 136 d from July to November 1995. The population showed an 80-fold increase during the stratified period but it only doubled over the subsequent period of entrainment. During the first eight days, part of the increase was attributed to recruitment of filaments floating up from greater depths but all of the subsequent production could be accounted for by photoautotrophic growth. On sunny days the biomass-specific photosynthesis of this population reached some of the highest values over the whole period despite its depth ( 13 m). On very cloudy days, however, primary productivity was very low and on 4 days, when the mean depth of the population exceeded 15 m, there was no net production. Over the whole period of the study, the accumulated photosynthetic production exceeded the increase in biomass of the population by a factor of 9n5. Although much of this production occurred during the period of entrainment only a small proportion was translated into growth of the population. It is concluded that the growth that takes place in the period of stratification in the metalimnion is essential to subsequent production.

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Buoyancy regulation and vertical migration byOscillatoria rubescensin Crooked Lake, Indiana

Cited by 50 publications

References 19 publications

Carbohydrate fluctuations, gas vacuolation, and vertical migration of scum‐forming cyanobacteria in fishponds1

Carbohydrate fluctuations, gas vacuolation, and vertical migration of scum‐forming cyanobacteria in fishponds1

Importance of climate change-physical forcing on the increase of cyanobacterial blooms in a small, stratified lake

The daily integral of photosynthesis by Planktothrix rubescens during summer stratification and autumnal mixing in Lake Zürich

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