Table 1 Lake locations, characteristics, sediment physicochemical data and diversity indices of fungal assemblages obtained from Skua Lake (Elephant Island), Soto Lake (Deception Island), Katerina Lake and Florencia Lake (James Ross Island).
Lake geological characteristics | Lake | |||
|---|---|---|---|---|
Skua | Soto | Katerina | Florencia | |
Location | 61° 13´ 18.2" S 55° 21´ 54.3" W | 62° 59´ 05.4" S 60° 39´18.0" W | 64° 01′ 25.5" S 57° 43′ 03.6" W | 64° 01′ 24.0" S 57° 40′ 03.1" W |
Altitude (meters above sea level) | 59 | 13 | 250 | 25 |
Total area (m2) | 6009 | 18,190 | 126,951 | 132,000 |
Perimeter (m) | 400 | 630 | 2085 | 1854 |
Distance to coastline (m) | 500 | 220 | 1,337 | 1,429 |
Depth (m) | 0.4 | > 3 | 1 | > 10 |
Lake shape | Elongate (E–W) | Rectangular | Irregular | Circular |
Sediment chemical parameters | ||||
pH in H2O | 6.1 | 8.8 | 8.4 | 8.5 |
Exchangeable P—mg dm3–1 | 218.4 | 19.5 | 120.5 | 9.3 |
Sum of exchangeable bases Ca + K + Mg (SB)—cmolc/dm3 | 0.73 | 3.51 | 5.53 | 7.59 |
Percentage of base saturation (PBS)—% | 35.6 | 78.0 | 94.4 | 79.3 |
H + Al–potential acidity—cmolc dm3–1 | 1.32 | 0.99 | 0.33 | 1.98 |
Cation exchange capacity at pH 7 (CEC)—cmolc dm3–1 | 2.05 | 4.50 | 5.86 | 9.57 |
Total organic carbon (TOC)—dag/kg | 0.07 | 0.08 | 0.54 | 0.38 |
Micronutrient Fe—mg dm3–1 | 84.5 | 231.2 | 252.2 | 44.0 |
Micronutrient Mn–mg dm3–1 | 2.3 | 11.1 | 54.2 | 63.2 |
Resident fungal diversity indices | ||||
Number of DNA reads | 33,429 | 71,983 | 54,939 | 46,813 |
Number of taxa | 50 | 31 | 51 | 171 |
Fisher’s-α (diversity) | 21.40 | 10.27 | 22.1 | 559.7 |
Margalef (richness) | 9.25 | 5.66 | 9.44 | 32.09 |
Simpson's (dominance) | 0.76 | 0.78 | 0.79 | 0.92 |
