Seasonal periodicity, heterocyst differentiation and sporulation of planktonic Cyanophyceae in a shallow lake, with special reference to<i>Anabaena solitaria</i>

Cmiech, Helena A.; Reynolds, C. S.; Leedale, Gordon F.

doi:10.1080/00071618400650271

Cited by 24 publications

(20 citation statements)

References 33 publications

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“…Recruitment was high at the start and dropped with time, indicating that the 'seed bank' was diminishing. These results are in agreement with Cmiech et al (1984), who showed that recruitment in A. solitaria started after only 24 h, and that 40% of the akinetes had germinated after 7 d. In contrast, A. lemmermannii had its maximum recruitment towards the end of the incubation period. Similar to the Anabaena species, the 2 Microcystis species also had different response patterns with staggered germination times (Fig.…”

Section: Discussionsupporting

confidence: 82%

Factors regulating the recruitment of cyanobacterial and eukaryotic phytoplankton from littoral and profundal sediments

Rengefors¹,

Gustafsson²,

Ståhl-Delbanco³

2004

Aquat. Microb. Ecol.

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Many phytoplankton species produce resting cysts, forming 'seed banks' on lake sediments until they germinate and provide inocula (recruitment) for future pelagic populations. We have addressed the question of whether the littoral or the profundal zone provides the inoculum for planktonic populations in a eutrophic and dimictic lake (Lake Erken, Sweden). Our hypotheses were that high temperature, light, and sediment mixing would enhance recruitment. Also, we hypothesized that recruitment from littoral sediments would be greater than from profundal sediments. In situ recruitment traps were utilized to compare littoral and profundal recruitment, while laboratory experiments were performed to analyze which factors were most important. Seven common taxa were investigated: Asterionella formosa (Bacillariophyceae), Ceratium hirundinella (Dinophyceae), Microcystis botrys, M. wesenbergii, Anabaena sp., A. solitaria, and A. lemmermannii (Cyanobacteria). Our main findings were that light and sediment mixing were the most important factors in triggering and enhancing recruitment in the laboratory. Temperature and sediment origin (littoral/profundal) had a significant effect on recruitment only for A. lemmermannii and C. hirundinella, respectively. The field experiments showed that recruitment at the littoral site was much higher than at the profundal site, where little or no recruitment occurred. Together, these results strongly suggest that littoral sediments in temperate lakes provide inocula for most phytoplankton populations, likely due to favorable light conditions and high sediment mixing.

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Section: Discussionsupporting

confidence: 82%

Factors regulating the recruitment of cyanobacterial and eukaryotic phytoplankton from littoral and profundal sediments

Rengefors¹,

Gustafsson²,

Ståhl-Delbanco³

2004

Aquat. Microb. Ecol.

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“…Full details may be found in Rees, Cmiech & Leedale (1984) and Cmiech, Reynolds & Leedale (1984). Material was examined in an untreated state in the laboratory using a Reichert Zetopan light microscope equipped with bright field and Anoptral contrast optics.…”

Section: Methodsmentioning

confidence: 99%

“…Descriptions of the lake and the diverse populations of phytoplankton it supports are available elsewhere (Cmiech, Reynolds & Leedale, 1984;Rees, Cmiech & Leedale, 1984). The present series of papers describes cytological and ultrastructural features of selected cyanophytes in Sawley Dene with special emphasis on the process of cell differentiation as followed over two successive field seasons.…”

mentioning

confidence: 99%

Morphological and ultrastructural variability of planktonic Cyanophyceae in relation to seasonal periodicity

Cmiech

Leedale

Reynolds

1984

British Phycological Journal

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“…Br6b., Nierzwicki-Bauer, Balkwill & Stevens, 1983) but G. naegeliana has a level of cell complexity equal to that found in the more diverse heterocystous types (e.g. Cmiech et al, 1984Cmiech et al, , 1986.…”

Section: Discussionmentioning

confidence: 99%

“…The lake and its plankton are described elsewhere (Rees, Cmiech & Leedale, 1984;Cmiech, Reynolds & Leedale, 1984) and the first two papers in the present series deal with Gloeotrichia echinulata J. E. Smith (Cmiech, Leedale & Reynolds, 1984) and Anabaena solitaria Klebs (Cmiech, Leedale & Reynolds, 1986). This short third paper is concerned with the ultrastructure of Gomphosphaeria naegeliana (Unger) Lemm., morphologically the most simple cyanophyte encountered in Sawley Dene.…”

mentioning

confidence: 99%

Morphological and ultrastructural variability of planktonic Cyanophyceae in relation to seasonal periodicity III.Gomphosphaeria naegeliana

Cmiech¹,

Leedale²,

Reynolds³

1987

British Phycological Journal

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Seasonal periodicity, heterocyst differentiation and sporulation of planktonic Cyanophyceae in a shallow lake, with special reference toAnabaena solitaria

Cited by 24 publications

References 33 publications

Factors regulating the recruitment of cyanobacterial and eukaryotic phytoplankton from littoral and profundal sediments

Factors regulating the recruitment of cyanobacterial and eukaryotic phytoplankton from littoral and profundal sediments

Morphological and ultrastructural variability of planktonic Cyanophyceae in relation to seasonal periodicity

Morphological and ultrastructural variability of planktonic Cyanophyceae in relation to seasonal periodicity III.Gomphosphaeria naegeliana

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