Table 1 Summary of metabarcoding data, taxonomic identification and species richness across 16 sampling sites.
Rivers | Sites | Sample Size | Morpho-family† | Metabarcoding Reads | Arthropod OTUs | Metabarcoding Tax. ID | |||
|---|---|---|---|---|---|---|---|---|---|
Raw | Filtered | Mapped to Arthropod OTUs | Families | Species (Richness) | |||||
Dam-fragmented | |||||||||
Burvagn Dam (Gelgia River) | US | 621 | 14 | 277,528 | 132,964 | 107,655 | 458 | 15 | 60 |
DS | 575 | 9 | 500,652 | 237,728 | 182,147 | 508 | 16 | 65 | |
Isenthal Dam (Isenthalerbach) | US | 171 | 11 | 260,402 | 124,617 | 79,831 | 322 | 20 | 60 |
DS | 821 | 12 | 553,363 | 136,255 | 117,853 | 288 | 13 | 50 | |
Dam-fragmented with SBT | |||||||||
Pfaffensprung Dam (Reuss River) | US | 641 | 12 | 253,254 | 148,241 | 129,568 | 293 | 17 | 46 |
DS-A | 1522 | 10 | 362,477 | 161,635 | 135,275 | 270 | 15 | 41 | |
Egschi Dam (Rabiusa River) | US | 288 | 12 | 252,696 | 108,979 | 87,625 | 390 | 15 | 50 |
DS-B | 158 | 12 | 441,620 | 159,435 | 135,880 | 318 | 10 | 36 | |
DS-A | 237 | 7 | 315,665 | 119,695 | 99,479 | 228 | 13 | 34 | |
Solis Dam (Albula River) | US | 575 | 10 | 536,536 | 130,451 | 107,970 | 422 | 15 | 46 |
DS-B | 461 | 9 | 297,590 | 170,244 | 130,527 | 373 | 13 | 43 | |
DS-A | 19 | 7 | 352,962 | 111,087 | 90,294 | 229 | 11 | 32 | |
Free-flowing | |||||||||
Nolla River | US | 194 | 7 | 424,824 | 116,326 | 100,728 | 279 | 15 | 34 |
DS | 54 | 7 | 253,407 | 137,800 | 103,591 | 244 | 14 | 38 | |
Kärstelenbach | US | 301 | 12 | 304,706 | 127,751 | 108,236 | 372 | 17 | 61 |
DS | 215 | 10 | 423,182 | 232,732 | 191,720 | 354 | 12 | 50 | |
Total | n/a | 6,853 | 24 | 5,810,864 | 2,355,940 | 1,908,379 | 734 | 36 | 131 |
