Table 1 Sampling locations, characteristics, sediment physicochemical data and diversity indices of fungal assemblages detected in the three marine sediments analysed from the South Shetland Islands, maritime Antarctica.
Parameters | Location (depth in m) | ||
|---|---|---|---|
Walker Bay, Livingston Island (52 m) | Whalers Bay, Deception Island (151 m) | English Strait (404 m) | |
Location | 62°39′149"S; 060°38′225" W | 62°56′23"S; 060°39'.42"W | 62°28′680″S; 59°32′706″W |
Sediment physical parameters | |||
Clay (%) | 18 | 26 | 15 |
Silt | 43 | 36 | 72 |
Coarse sand | 2 | 1 | 1 |
Fine sand | 37 | 43 | 12 |
Textural class | Loam | Loam | Silt-loam |
Sediment chemical parameters | |||
pH in H2O | 8.6 | 8.4 | 7.8 |
Exchangeable P—mg dm–3 | 131.8 | 165.5 | 135.7 |
Sum of exchangeable bases Ca + K + Mg (SB) – cmolc dm-3 | 6.74 | 6.30 | 6.07 |
Percentage of base saturation (PBS)—% | 100.0 | 100.0 | 100.0 |
H + Al—potential acidity—cmolc dm-3 | 0.0 | 0.0 | 0.0 |
Cation exchange capacity at pH 7 (CEC)—cmolc dm-3 | 6.74 | 6.30 | 6.07 |
Total organic carbon (TOC)—dag kg-1 | 0.77 | 0.85 | 0.98 |
Micronutrient Fe—mg dm-3 | 478.2 | 617.2 | 1029.2 |
Micronutrient Mn—mg dm-3 | 14.9 | 14.8 | 43.3 |
Fungal diversity indices | |||
Number of DNA reads | 48,112 | 104,704 | 40,620 |
Number of taxa | 89 | 32 | 59 |
Fisher’s-α (diversity) | 389 | 16.3 | 60.4 |
Margalef (richness) | 19.11 | 6.73 | 12.6 |
Simpson's (dominance) | 0.7 | 0.5 | 0.8 |
