Figure 1
Location of the study area and sampling sites
Table 1
Seasonal changes in physical and chemical parameters of the investigated peat bog
| Parameters | units | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 2014 | ||||||||||||||||
| months | |||||||||||||||||
| IV | V | VI | VII | VIII | IX | X | XI | IV | V | VI | VII | VIII | IX | X | XI | ||
| Temp. | °C | 18.0 | 21.6 | 23.4 | 21.7 | 20.2 | 14.4 | 14.3 | 14.3 | 21.2 | 21.2 | 14.8 | 23.7 | 18.8 | 17.4 | 3.6 | 3.6 |
| pH | 3.1 | 3.1 | 3.9 | 3.3 | 6.2 | 6.5 | 3.9 | 3.9 | 3.5 | 3.5 | 4.6 | 5.2 | 7.7 | 3.9 | 3.9 | 3.9 | |
| Conductivity | μS cm-1 | 44.0 | 44.0 | 24.0 | 35.0 | 60.0 | 23.0 | 59.0 | 59.0 | 31.0 | 31.0 | 18.0 | 50.0 | 53.0 | 67.0 | 68.0 | 68.0 |
| Oxygen | mg O2 l-1 | 5.9 | 5.9 | 5.6 | 7.0 | 13.1 | 3.8 | 9.4 | 9.4 | 5.6 | 5.6 | 8.7 | 5.2 | 7.5 | 5.9 | 11.1 | 11.1 |
| N-NH4+ | mg N-NH4 l-1 | 0.135 | 0.155 | 0.125 | 2.696 | 0.256 | 0.012 | 0.070 | 0.070 | 0.020 | 0.020 | 0.020 | 0.016 | 0.021 | 0.011 | 0.023 | 0.023 |
| N-NO3 | mg N-NO3 l-1 | 1.156 | 1.156 | 0.740 | 1.014 | 0.805 | 1.602 | 1.030 | 0.030 | 0.658 | 0.658 | 0.096 | 0.757 | 0.533 | 0.582 | 0.651 | 0.651 |
| Ntot | mg N l-1 | 4.318 | 4.318 | 1.134 | 0.159 | 1.158 | 1.523 | 2.57 | 2.567 | 4.318 | 4.318 | 1.134 | 0.16 | 1.16 | 1.52 | 2.57 | 2.57 |
| Ptot | mg P l-1 | 0.434 | 0.434 | 1.262 | 0.590 | 0.402 | 0.278 | 0.569 | 0.569 | 0.739 | 0.739 | 0.449 | 0.500 | 0.612 | 0.551 | 0.774 | 0.774 |
| Chlorophyll a | μS l-1 | 185.6 | 160.6 | 277.4 | 265.2 | 95.1 | 170.3 | 118.0 | 118.0 | 33.5 | 33.5 | 24.2 | 103.7 | 77.1 | 26.9 | 47.1 | 47.1 |
| TOC | mg C l-1 | 75.3 | 75.3 | 37.8 | 74.0 | 126.5 | 37.8 | 60.5 | 60.5 | 38.5 | 38.5 | 23.8 | 42.0 | 27.7 | 38.0 | 38.8 | 38.8 |
| DWT | cm | 7.0 | 6.0 | 9.0 | 11.0 | 11.0 | 17.0 | 23.0 | 17.0 | 9.0 | 9.0 | 7.0 | 11.0 | 9.0 | 18.0 | 19.0 | 22.0 |
Figure 2
Biplots of DCA axes 1 and 2 showing species populations of testate amoebae (A) and habitats (B)
Figure 3
CCA biplots showing relationships between environmental variables and habitats (A) and testate amoebae populations (B). Arrows indicate significant parameters in the Monte Carlo permutation test at P < 0.05. Species codes: Amp.wri, Amphitrema wrightianum; Arc.cat, Arcella catinus type; Arc.dis, Arcella disoides type; Arc.sp, Arcella sp.; Arc.vul, Arcella vulgaris; Ass.mus, Assulina muscorum; Arc.fla, Archerella Flavum; Ass.mus, Assulina muscorum; Ass.sem, Assulina seminulum; Cen.acu, Centropyxis aculeata type; Cen.aer, Centropyxis aerophila; Cen.pla, Centropyxis platystoma type; Cor.dub, Corythion dubium; Cor.tri, Corythion-Trinema type; Cry.ovi, Cryptodifflugia oviformis; Cyc.arc, Cyclopyxis arcelloides type; Cyc.amp, Cyphoderia ampulla; Dif.ele, Difflugia elegans; Dif.glo, Difflugia globulosa; Dif.lei, Difflugia leidyi; Dif.sp, Difflugia sp.; Eug.cil, Euglypha ciliata; Eug.com, Euglypha compressa; Eug.rot, Euglypha rotunda type; Eug.sp., Euglypha sp.; Eug.str, Euglypha strigosa; Eug.tub, Euglypha tuberculata type; Hel.pet, Heleopera petricola; Hel.ros, Heleopera rosea; Hel.sph, Heleopera sphagni; Hya.ele, Hyalosphenia elegans; Hya.ova, Hyalosphenia ovalis; Hya.pap, Hyalosphenia papilio; Hya.sub, Hyalosphenia subflava; Neb.boh, Nebela bohemica; Neb.car, Nebela carinata; Neb.col, Nebela collaris; Neb.par, Nebela parvula; Neb.fla, Nebela flabellulum; Neb.gri, Nebela griseola type; Neb.mil, Nebela militaris; Neb.sp, Nebela sp.; Neb.tin, Nebela tincta; Neb.vit, Nebela vitraea type; Pla.sci, Placocista spinosa type; Tri.arc, Trigonopyxis arcula