1-20 OF 129 RESULTS FOR

Phormidium

Results shown limited to content with bounding coordinates.
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

Phormidium hendersonii Howe; identity and significance of a modern stromatolite building microorganism Available to Purchase

S. Golubic, J. W. Focke
Published: 01 September 1978
Journal of Sedimentary Research (1978) 48 (3): 751–764.
DOI: https://doi.org/10.1306/212F7559-2B24-11D7-8648000102C1865D
... belong to the same microbial species. An historic confusion concerning the taxonomic identity of this microorganism has now been resolved and its valid name established: Phormidium hendersonii Howe 1918 (Oscillatoriaceae, Cyanophyta). Stromatolite morphology in this case is determined by the biological...
View PDF for article title, <span class="search-highlight">Phormidium</span> hendersonii Howe; identity and significance of a modern stromatolite building microorganism
Purchase
Add to Citation Manager for <span class="search-highlight">Phormidium</span> hendersonii Howe; identity and significance of a modern stromatolite building microorganism
Image
(A) Drawing of Oscillatoria cf. limnothrix filaments. (B) Drawing of Phormidium sp. filaments. (C) Drawing of Phormidium sp. “doughnuts.” (D) Photograph of squash mount of Phormidium sp. dominated mat from locality S2. Arrows indicate “doughnut” structures. (E) Drawing of large-diameter Oscillatoria sp. (F) Photograph of squash mount of mat from locality S4, showing cohabitating thick Oscillatoria sp. and thin Phormidium sp. filaments in mucilage.

(A) Drawing of Oscillatoria cf. limnothrix filaments. (B) Drawing of P... Available to Purchase

Published: 25 December 2003
Fig. 4. (A) Drawing of Oscillatoria cf. limnothrix filaments. (B) Drawing of Phormidium sp. filaments. (C) Drawing of Phormidium sp. “doughnuts.” (D) Photograph of squash mount of Phormidium sp. dominated mat from locality S2. Arrows indicate “doughnut” structures. (E) Drawing of large
Image
FIGURE 14—Common microbial associations found in samples from Tokaanu geyser mound. Sample locations are shown on Figure 3. (A) Phormidium mat formed of intricately interwoven filaments. Sample F. (B) Calothrix mat (enlarged from Fig. 5B) showing erect filaments. Phormidium and other microbes are present in lower part of mat (below white lines). Sample G. (C) Lower part of Calothrix mat (from Fig. 14B) showing Phormidium (arrows) wrapped around silica-encrusted Calothrix (C) filaments. Sample G. (D) Transverse cross-section through Calothrix (C) filaments encased by alternating layers of silica precipitates and epiphytic Phormidium (P). Sample K. (E) Transverse cross-section through Calothrix (C) filaments encased by alternating layers of silica precipitates and epiphytic Synechococcus (S). Sample I. (F) “Solid” silica laminae with densely packed Synechococcus. Sample E

FIGURE 14 —Common microbial associations found in samples from Tokaanu geys... Available to Purchase

Published: 01 April 2003
FIGURE 14 —Common microbial associations found in samples from Tokaanu geyser mound. Sample locations are shown on Figure 3 . (A) Phormidium mat formed of intricately interwoven filaments. Sample F. (B) Calothrix mat (enlarged from Fig. 5B ) showing erect filaments. Phormidium and other
Image
Images of cyanobacteria at the start of the incubation experiments. A) Epifluorescence microscopy showing dominant cyanobacteria (genera) Phormidium stained with Acridine Orange, scale bar = 20 μm. B) SEM image showing Phormidium trichomes and cells, scale bar = 10 μm. C) SEM image showing mass of cyanobacterial cells and EPS, scale bar = 2 μm.D) Sketch showing some of the cellular detail of cyanobacterial cells in panel C.

Images of cyanobacteria at the start of the incubation experiments. A ) Ep... Available to Purchase

Published: 05 December 2017
Fig. 1.— Images of cyanobacteria at the start of the incubation experiments. A ) Epifluorescence microscopy showing dominant cyanobacteria (genera) Phormidium stained with Acridine Orange, scale bar = 20 μm. B ) SEM image showing Phormidium trichomes and cells, scale bar = 10 μm. C ) SEM
Journal Article

Coniform Stromatolites from Geothermal Systems, North Island, New Zealand Available to Purchase

BRIAN JONES, ROBIN W. RENAUT, MICHAEL R. ROSEN, KEVIN M. ANSDELL
Journal: PALAIOS
Published: 01 February 2002
PALAIOS (2002) 17 (1): 84–103.
DOI: https://doi.org/10.1669/0883-1351(2002)017<0084:CSFGSN>2.0.CO;2
..., and (4) Phormidium form more than 90% of the biota. As such, they are comparable to modern coniform mats and stromatolites found in the geothermal systems of Yellowstone National Park and ice-covered lakes in Antarctica. Formation of the coniform stromatolites is restricted to pools...
FIGURES
First thumbnail for: Coniform Stromatolites from Geothermal Systems, No...
Second thumbnail for: Coniform Stromatolites from Geothermal Systems, No...
Third thumbnail for: Coniform Stromatolites from Geothermal Systems, No...
View PDF for article title, Coniform Stromatolites from Geothermal Systems, North Island, New Zealand
Purchase
Add to Citation Manager for Coniform Stromatolites from Geothermal Systems, North Island, New Zealand
Journal Article

Microbial biofacies in hot-spring sinters; a model based on Ohaaki Pool, North Island, New Zealand Available to Purchase

Brian Jones, Robin W. Renaut, Michael R. Rosen
Published: 01 May 1998
Journal of Sedimentary Research (1998) 68 (3): 413–434.
DOI: https://doi.org/10.2110/jsr.68.413
... discharge apron into the Waikato River. The discharge apron was inhabited by thriving microbial communities that included Calothrix, Phormidium, and numerous Synechococcus. These microbes mediated the construction of columnar stromatolites around the edge of Ohaaki Pool, oncoids in the discharge channel...
View PDF for article title, Microbial biofacies in hot-spring sinters; a model based on Ohaaki Pool, North Island, New Zealand
Purchase
Add to Citation Manager for Microbial biofacies in hot-spring sinters; a model based on Ohaaki Pool, North Island, New Zealand
Image
Hardpart sections of reef-surface biota and biofilms of the wet season, June 1996. A) Vertical section of a reef-top biofilm showing Calothrix filaments (calo) within a plexus of Phormidium filaments (phorm). The coccoid Pleurocapsa (pleu) preferentially occurs near the contact with the hard substrate. 0.3 m depth, reef #1. Phase contrast. Sample Sat 96/14. B) Upper part of reef-surface biofilm at 0.6 m depth. Numerous bacteria occur at the top of the Calothrix-Phormidium biofilm. Reef #1. Deconvolved epifluorescence micrograph (ex 450-490 nm, em 520-575 nm), Sample Sat 96/15. C) 10-μm-thick biofilm of non-phototrophic bacteria (biofilm) upon a laminated crust (crust) within the void of the fossil green-algal-microbialite framestone of the reef tops. 0.6 m depth, reef #1. Deconvolved epifluorescence micrograph (ex 450-490 nm, em 520-575 nm). Sample Sat 96/15. D) Non-calcified bacterial biofilm with scattered hemispherical algae ("Dermocarpella") (dermo) upon a living Peyssonnelia crust (pey) of the reef surface. 5 m depth, reef #1a. Nomarski optics. Sample Sat 93/3. E) Soft Phormidium-diatom biofilm (phorm-dia) with basal Pleurocapsa layer (pleu) and trapped fecal pellets (pel) upon dead red-algal-foraminiferal crust (red-foram). 17 m depth, reef #1a. Transmitted light. Sample Sat 96/31. F) Non-mineralized reef-surface biofilm composed of prostrate Phormidium filaments (phorm) and diatoms (dia) at 17 m depth. Basal biofilm parts on the dead red-algal-foraminiferal crusts are formed by Pleurocapsa and dead Lithoporella (litho). Reef #1a. Nomarski optics. Sample: Sat96/31-AO.

Hardpart sections of reef-surface biota and biofilms of the wet season, Jun... Available to Purchase

Published: 01 January 2003
Figure 10 Hardpart sections of reef-surface biota and biofilms of the wet season, June 1996. A) Vertical section of a reef-top biofilm showing Calothrix filaments (calo) within a plexus of Phormidium filaments (phorm). The coccoid Pleurocapsa (pleu) preferentially occurs near the contact
Image
FIGURE 17—Comparison of diameters of silicified filaments in New Zealand coniform stromatolites with extant species of Phormidium and Chloroflexus

FIGURE 17 —Comparison of diameters of silicified filaments in New Zealand c... Available to Purchase

Published: 01 February 2002
FIGURE 17 —Comparison of diameters of silicified filaments in New Zealand coniform stromatolites with extant species of Phormidium and Chloroflexus
Journal Article

Biochemical Control of Calcium Carbonate Precipitation in Modern Lagoonal Microbialites, Tikehau Atoll, French Polynesia Available to Purchase

Pascale Gautret, Gilbert Camoin, Stjepko Golubic, Sophie Sprachta
Published: 01 July 2004
Journal of Sedimentary Research (2004) 74 (4): 462–478.
DOI: https://doi.org/10.1306/012304740462
...Pascale Gautret; Gilbert Camoin; Stjepko Golubic; Sophie Sprachta Abstract Hemispheroidal domes (microbialites) produced by natural populations of filamentous cyanobacteria belonging to four distinct Phormidium species, and one probable new species of Schizothrix , were collected alive from 0 to 25...
FIGURES
First thumbnail for: Biochemical Control of Calcium Carbonate Precipita...
Second thumbnail for: Biochemical Control of Calcium Carbonate Precipita...
Third thumbnail for: Biochemical Control of Calcium Carbonate Precipita...
View PDF for article title, Biochemical Control of Calcium Carbonate Precipitation in Modern Lagoonal Microbialites, Tikehau Atoll, French Polynesia
Purchase
Add to Citation Manager for Biochemical Control of Calcium Carbonate Precipitation in Modern Lagoonal Microbialites, Tikehau Atoll, French Polynesia
Image
Frequency histograms of amino acids of soluble organic matrices (SOM) in fine-grained carbonates precipitated in Phormidium and Schizothrix microbialites.

Frequency histograms of amino acids of soluble organic matrices (SOM) in fi... Available to Purchase

Published: 01 July 2004
Figure 9 Frequency histograms of amino acids of soluble organic matrices (SOM) in fine-grained carbonates precipitated in Phormidium and Schizothrix microbialites.
Image
Frequency histograms of amino acids of insoluble organic matrices (IOM) in fine-grained carbonates precipitated in Phormidium and Schizothrix microbialites.

Frequency histograms of amino acids of insoluble organic matrices (IOM) in ... Available to Purchase

Published: 01 July 2004
Figure 12 Frequency histograms of amino acids of insoluble organic matrices (IOM) in fine-grained carbonates precipitated in Phormidium and Schizothrix microbialites.
Image
(A) Photograph of squash mount of basal layer of mat, locality S6. Dark areas contain purple SRB. (B) Enlarged view of (A), showing dense population of Synechococcus sp. and bacteria with scattered cyanobacterial filaments. (C) Bacteria attached to decaying Phormidium sp. filament (arrows). Diameter of empty sheaths in top left corner has been increased by squashing (arrow). (D) Bacteria, Synechococcus sp. (arrows), and gypsum crystallite. (E) Drawing of Synechococcus sp. (F) Drawing of unicellular alga (Chlorella sp.) found at localities S1, S2, S7, and S8. (G) Drawing of Gleocapsa sp. found in mats from localities S2, S7, and S8. (H) Drawing of Xenococcus sp. growing on Phormidium sp. filaments, locality S4. (I) Unidentified filamentous microbe with spore clusters and apical swelling found in mats from locality S1.

(A) Photograph of squash mount of basal layer of mat, locality S6. Dark are... Available to Purchase

Published: 25 December 2003
Fig. 5. (A) Photograph of squash mount of basal layer of mat, locality S6. Dark areas contain purple SRB. (B) Enlarged view of (A), showing dense population of Synechococcus sp. and bacteria with scattered cyanobacterial filaments. (C) Bacteria attached to decaying Phormidium sp. filament
Journal Article

Cyanobacteria associated with hot spring travertines Available to Purchase

Allan Pentecost
Published: 19 November 2003
Canadian Journal of Earth Sciences (2003) 40 (11): 1447–1457.
DOI: https://doi.org/10.1139/e03-075
.... In Table  1 , it can be seen that direct evidence of mineralization is confined to a handful of species. At Pamukkale, Turkey, the upper travertines are colonized by surficial mats of Phormidium laminosum , and thin vertical sections reveal strings of small calcite crystals attached to the trichomes...
FIGURES
First thumbnail for: Cyanobacteria associated with hot spring travertin...
View PDF for article title, Cyanobacteria associated with hot spring travertines
Purchase
Add to Citation Manager for Cyanobacteria associated with hot spring travertines
Image
Schematic diagram of a green-algal microbialite and recent aragonite precipitates within the Phormidium-Calothrix-Pleurocapsa zone at the seasonally exposed reef tops, wet season, June 1996.

Schematic diagram of a green-algal microbialite and recent aragonite precip... Available to Purchase

Published: 01 January 2003
Figure 11 Schematic diagram of a green-algal microbialite and recent aragonite precipitates within the Phormidium - Calothrix - Pleurocapsa zone at the seasonally exposed reef tops, wet season, June 1996.
Journal Article

Microbes and mineral precipitation, Miette Hot Springs, Jasper National Park, Alberta, Canada Available to Purchase

Sandy Bonny, Brian Jones
Published: 25 December 2003
Canadian Journal of Earth Sciences (2003) 40 (11): 1483–1500.
DOI: https://doi.org/10.1139/e03-060
...Fig. 4. (A) Drawing of Oscillatoria cf. limnothrix filaments. (B) Drawing of Phormidium sp. filaments. (C) Drawing of Phormidium sp. “doughnuts.” (D) Photograph of squash mount of Phormidium sp. dominated mat from locality S2. Arrows indicate “doughnut” structures. (E) Drawing of large...
FIGURES
First thumbnail for: Microbes and mineral precipitation, Miette Hot Spr...
Second thumbnail for: Microbes and mineral precipitation, Miette Hot Spr...
Third thumbnail for: Microbes and mineral precipitation, Miette Hot Spr...
View PDF for article title, Microbes and mineral precipitation, Miette Hot Springs, Jasper National Park, Alberta, Canada
Purchase
Add to Citation Manager for Microbes and mineral precipitation, Miette Hot Springs, Jasper National Park, Alberta, Canada
Image
SEM photomicrographs of ultra-fine carbonate fraction composed of carbonate precipitates. A) In a microbialite of Schizothrix sp. (Sample 98-37). B) In a microbialite of Phormidium cf. crosbyanum (Sample 98-32).

SEM photomicrographs of ultra-fine carbonate fraction composed of carbonate... Available to Purchase

Published: 01 July 2004
Figure 4 SEM photomicrographs of ultra-fine carbonate fraction composed of carbonate precipitates. A) In a microbialite of Schizothrix sp. (Sample 98-37). B) In a microbialite of Phormidium cf. crosbyanum (Sample 98-32).
Image
Average relative concentrations of amino acids (residue %) in cyanobacterial filamentous networks provided by Phormidium sp. TK1, P. cf crosbyanum, P. hendersonii, and Schizothrix sp. Low-high values are indicated by vertical bars.

Average relative concentrations of amino acids (residue %) in cyanobacteria... Available to Purchase

Published: 01 July 2004
Figure 5 Average relative concentrations of amino acids (residue %) in cyanobacterial filamentous networks provided by Phormidium sp. TK1, P. cf crosbyanum, P. hendersonii , and Schizothrix sp. Low-high values are indicated by vertical bars.
Image
Cyanobacterial meshworks: Frequency histogram of A) aspartic acid (Asp) and B) glutamic acid (Glu) contents (in residue %) in filamentous networks produced by Phormidium spp. and Schizothrix sp. C) Correlation between aspartic and glutamic acid concentrations.

Cyanobacterial meshworks: Frequency histogram of A) aspartic acid (Asp) a... Available to Purchase

Published: 01 July 2004
Figure 6 Cyanobacterial meshworks: Frequency histogram of A) aspartic acid (Asp) and B) glutamic acid (Glu) contents (in residue %) in filamentous networks produced by Phormidium spp. and Schizothrix sp. C) Correlation between aspartic and glutamic acid concentrations.
Image
FIGURE 7—Silicified filamentous microbes in geyser-mound deposits. Sample locations are shown on Figure 3. (A) Longitudinal cross-section through Calothrix showing open lumen, silicified sheath, and thick crust of opal-A silica. Sample K. (B) Transverse cross-sections through Calothrix with open lumens, silicified sheaths, and thick crust of opal-A. Sample K. (C) Transverse cross-sections through Calothrix showing silicified laminated sheath. Sample A. (D) Oblique cross section through Calothrix showing silicified laminated sheath and septa. Sample G. (E) Group of Phormidium? encrusted by featureless silica. Some specimens are encased by an outer layer of beaded silica (arrow). Sample I. (F, G) Traverse cross-sections through Phormidium showing open lumen, thin silicified sheath, and thick crust of silica. Sample I. (H) External view of Anabaena? Sample E. (I) Longitudinal cross-section through Anabaena? showing septa. (J) Longitudinal cross-section through Chloroflexus? showing septa. Sample G

FIGURE 7 —Silicified filamentous microbes in geyser-mound deposits. Sample ... Available to Purchase

Published: 01 April 2003
with open lumens, silicified sheaths, and thick crust of opal-A. Sample K. (C) Transverse cross-sections through Calothrix showing silicified laminated sheath. Sample A. (D) Oblique cross section through Calothrix showing silicified laminated sheath and septa. Sample G. (E) Group of Phormidium
Image
Average relative concentrations of amino acids (residue %) in soluble organic matrices (SOM) extracted from carbonates precipitated in Phormidium sp. TK1, P. cf. crosbyanum, P. hendersonii, and Schizothrix sp. microbialites. Low-high values are indicated by vertical bars.

Average relative concentrations of amino acids (residue %) in soluble organ... Available to Purchase

Published: 01 July 2004
Figure 8 Average relative concentrations of amino acids (residue %) in soluble organic matrices (SOM) extracted from carbonates precipitated in Phormidium sp. TK1, P. cf. crosbyanum, P. hendersonii , and Schizothrix sp. microbialites. Low-high values are indicated by vertical bars.