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Fig. 4 in Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida)

Fig. 4. Light microscopical image of Meisterfeldia wegeneri in lateral view. A – typical specimen, B – morphological variability.

Fig. 3 in Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida)

Fig. 3. Outline of Meisterfeldia chibisovi: lateral (left) and ventral (right) views. 1–4 – characters of the test measured. Scale bar: 5 µm.

Fig. 7 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 7. Histograms depicting distribution of data for characters analyzed in this study. The black lines represent density curves that fit our data. Aperture height (ah), test diameter (td) and test top diameter (ttd) present a distribution similar to a bimodal distribution, while all the other characters show a nearly normal distribution. Characters tb2 and bw2 are not shown since they are equal to tb1 and bw1, respectively.

Fig. 2 in Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida)

Fig. 2. Light microscopical image of Meisterfeldia chibisovi in lateral view. A – typical specimen, B – morphological variability.

Fig. 2 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 2. Lateral view of six individuals of Arcella gandalfi. A and B – individuals with highest shell, top invagination is easily seen; C and D – individuals with intermediate shell height, top invagination easily seen; E and F – individuals with lowest shell height. Scale bar: 20 µm.

Fig. 1 in Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida)

Fig. 1. Location of the Kytalyk study site in the northeastern Siberian lowland. Digital Elevation Model compiled by G. Grosse (AWI Potsdam).

Fig. 1 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 1. Representation of measured characters. A – Arcella gandalfi in lateral view, showing aperture height (ah), test height (th), test top invagination (tti) and test top diameter (ttd). B – Arcella gandalfi in apertural view, showing the test diameter (td), aperture diameter (ad), test border 1–2 (tb1–2) and brim width 1–2 (bw1–2).

Fig. 6 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 6. Morphology of Arcella gandalfi under Scanning Electron Microscopy (SEM). A and B – lateral view showing the aperture region; C – shell detail showing elongated shape of the alveolar units on the conical extension of the shell. Scale bars: 20 µm.

Fig. 5 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 5. Representative images of an Arcella brasiliensis individual. A – apertural view, showing the distinct marginal ring (test brim); B – lateral view showing the rounded dome. Scale bar: 20 µm.

Fig. 4 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 4. Apertural view of two individuals of Arcella gandalfi. A and B – distinct marginal ring (test brim) similar to Arcella brasiliensis easily seen. Scale bar: 20 µm.

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FIGURE 4 in Erugomicula, a new genus of Arcellinida (testate lobose amoebae)

FIGURE 4. Morphological parameters of Erugomicula bidens measured using specimens retrieved from Bell's Lake (ON) Scott's Pond (ON) and Yellowknife (NT) (n=24). Left, Density distribution plot of length and width of E. bidens; specimen width is represented by the light grey curve, and specimen length with the dark grey curve. Right, Scatterplot of length versus width of measured E. bidens specimens; the black line represents the median length:width ratio of 1.3.

Fig. 7 in First Records and Community Pattern of Arcellinida Inhabiting a Pristine and Remote Island from Southeastern Pacific, Chile

Fig. 7. Bubble plots of the two most conspicuous species making up the observed similarity within each community. For community A: A – Cyclopyxis arcelloides; B – Difflugia oblonga curvicollis; and for community B: C – Argynnia dentistoma; D – Apodera vas. Bubble plots are superimposed from the nMDS showed in Fig. 5. Bubble size approximates relative proportion of a given species in each sampling sites (gray circles with numbers) and each community type (outlined circles).

Fig. 8 in First Records and Community Pattern of Arcellinida Inhabiting a Pristine and Remote Island from Southeastern Pacific, Chile

Fig. 8. Bubble plots of the two most conspicuous species making up the observed dissimilarity between both communities: A – Certesella martiali and B – Difflugia globularis. Bubble plots are superimposed from the nMDS showed in Fig. 5. Bubble size approximates relative proportion of a given morphospecies in each sampling sites (gray circles with numbers) and each community type (outlined circles).

Fig. 3 in First Records and Community Pattern of Arcellinida Inhabiting a Pristine and Remote Island from Southeastern Pacific, Chile

Fig. 3. Species observed on the Guamblin Island. 1 – Centropyxis aculeata aculeata; 2 – C. aculeata oblonga; 3 – C. aerophila; 4 – C. discoides; 5 – C. elongata; 6 – C. constricta; 7a, b – Cyclopyxis arcelloides; 8a, b – C. eurystoma; 9a, b – C. intermedia; 10a, b – C. kahli; 11a, b – Plagiopyxis glyphostoma major; 12 – Difflugia lanceolata; 13 – D. cylindrus; 14 – D. mitriformis; 15 – D. globularis; 16 – Pontigulasia compressa c.f.; 17 – D. lata; 18 – D. oblonga curvicollis c.f.; 19 – D. bryophila; 20 – Apodera vas; 21 – Certesella certesi; 22 – Heleopera sphagni; 23 – H. petricola; 24 – Argynnia dentistoma; 25 – A. vitrea; 26 – Nebela barbata psilonata; 27 – N. penardiana; 28 – N. collaris; 29 – Padaungiella (Nebela) lageniformis. The background of SEM images were retouched in some cases to highlight the organisms, however, the microorganisms per se were not manipulated in any way.

Fig. 5 in First Records and Community Pattern of Arcellinida Inhabiting a Pristine and Remote Island from Southeastern Pacific, Chile

Fig. 5. Bracketed samples encompass groupings (i.e. communities) that are dissimilar from other sampling sites at 43.69% (p = 0.001). A – Community A, includes those sampling sites located outside the forest (treeless-group); and B – Community B, includes those sampling sites located within the forest and at the forest margins (forested-group). Groupings are according to the group average method on Bray– Curtis similarity index and fourth root transformed abundance-data. Black solid lines correspond to significant clusters and dotted lines correspond to clusters without significant internal structure (based on SIMPER analysis using 1,000 permutations).

Fig. 6 in First Records and Community Pattern of Arcellinida Inhabiting a Pristine and Remote Island from Southeastern Pacific, Chile

Fig. 6. Non-metric multidimensional scaling plot (nMDS) and Kruskal stress value for the nMDS configuration based on the abundance data of testate amoebae species found along the surveyed sampling sites on the Guamblin Island. Outlined circles represent groupings (i.e. communities) that are dissimilar from other sampling sites at 43.69% (based on SIMPER analysis using 1,000 permutations, p = 0.001). Groupings are according to the group average method on Bray–Curtis similarity index and fourth root transformed abundance-data.

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Fig. 9 in Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida)

Fig. 9. Meisterfeldia turfacea (after Zacharias, 1903). Scale bar: 5 µm.

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Fig. 8 in Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida)

Fig. 8. Meisterfeldia vanhoornei (after: Beyens et al., 1986). Scale bar: 5 µm.

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Fig. 3 in Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp.nov. (Amoebozoa:Arcellinida) fromBrazilianContinental Waters

Fig. 3. Top view of the Arcella gandalfi shell showing the top in-