Table 2 Mean density (ind/m 2 ), range, and functional feeding groups of the 27 caddisfly taxa
FFG | Nant y Fall | Chiquito | |||
|---|---|---|---|---|---|
Pre-eruption | Post-eruption | Pre-eruption | Post-eruption | ||
Glossosomatidae | |||||
Mastigoptila longicornuta (Schmid 1958) | Scr | 51 (0 to 388) | 33 (0 to 137) | ||
Scotiotrichia ocreata (Mosely 1934) | Scr | 248 (0 to 488) | 20 (0 to 89) | ||
Helicophidae | |||||
Austrocentrus valgiformis Flint 1997 | Scr | 18 (0 to 44) | 7 (0 to 15) | ||
Eosericostoma aequispina Schmid 1955 | Scr | 61 (4 to 207) | 2 (0 to 15) | ||
Hydrobiosidae | |||||
Cailloma pumida Ross 1956 | P | 1 (0 to 7) | 1 (0 to 4) | 6 (0 to 33) | 1 (0 to 4) |
Metachorema griseum Schmid 1957 | P | 11 (0 to 30) | |||
Neoatopsyche brevispina Schmid 1957 | P | 47 (0-163) | 52 (0 to 178) | 50 (7 to 129) | 23 (15 to 33) |
Neoatopsyche unispina Flint 1967 | P | 20 (0 to 55) | 10 (0 to 41) | 1 (0 to 7) | 1 (0 to 4) |
Neopsilochorema tricarinatum Schmid 1955 | P | 28 (0 to 85) | 23 (4 to 33) | 3 (0 to 7) | 1 (0 to 7) |
Rheochorema lobuliferum Flint 1967 | P | 2 (0 to 11) | |||
Rheochorema robustum Schmid 1955 | P | 3 (0 to 11) | 2 (0 to 7) | ||
Rheochorema tenuispinum Schmid 1955 | P | 8 (0 to 18) | 4 (0 to 7) | ||
Hydropsychidae | |||||
Smicridea annulicornis (Blanchard 1851) | CF | 135 (7 to 703) | 108 (15 to 259) | 64 (0 to 429) | 11 (4 to 30) |
Smicridea frequens (Navás 1930) | CF | 1,187 (48 to 4,755) | 1,751 (163 to 4,518) | 6 (0 to 19) | |
Hydroptilidae | |||||
Oxyethira bidentata Mosely 1934 | AP | 3 (0 to 30) | 2 (0 to 7) | ||
Hydroptilidae sp. A | Scr | 2 (0 to 15) | 2 (0 to 15) | ||
Metrichia patagonica (Flint 1983) | Scr | 22 (4 to 59) | |||
Metrichia neotropicalis Schmid 1958 | Scr | 13 (0 to 63) | |||
Leptoceridae | |||||
Brachysetodes quadrifidus Schmid 1955 | SH | 155 (18 to 396) | 27 (0 to 55) | 139 (18 to 314) | 17 (0 to 67) |
Hudsonema flaminii (Navás 1936) | SH | 2 (0 to 7) | 1 (0 to 4) | ||
Limnephilidae | |||||
Monocosmoecus sp. | SH | 10 (0 to 52) | 5 (0 to 18) | 4 (0 to 18) | |
Verger sp. | SH | 11 (0 to 67) | |||
Philorheithridae | |||||
Psilopsyche molinai Navás 1926 | P | 2 (0 to 7) | 6 (0 to 22) | 1 (0 to 4) | |
Polycentropodidae | |||||
Polycentropus sp. | P | 1 (0 to 4) | |||
Sericostomatidae | |||||
Myotrichia murina Schmid 1955 | SH | 329 (22 to 858) | 102 (30 to 226) | ||
Parasericostoma cristatum Flint 1983 | SH | 7 (0 to 26) | |||
Parasericostoma ovale (Schmid 1955) | SH | 3,916 (2,546 to 8,688) | 2,072 (674 to 4,177) | ||
Richness | 8 (6 to10) | 6 (4 to 8) | 8 (5 to 10) | 5 (2 to 8) | |
Density | 5,573 (3,015 to 14,230) | 4,094 (1,140 to 8,998) | 984 (196 to 2,012) | 204 (67 to 377) | |
Shannon diversity | 0.78 (0.6 to 1) | 1 (0.8 to 1.3) | 1.5 (1.2 to 1.7) | 1.2 (1 to 1.4) | |