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Table 1 Macroinvertebrates.

From: Stream Macroinvertebrates and Carbon Cycling in Tangled Food Webs

Order Family Species FFG Before density ind m−2 After density ind m−2 Control density ind m−2 Impact density ind m−2 After dry mass mg ind−1 Impact dry mass mg ind−1
Plecoptera Nemouridae Protonemura meyeri Shr 31 ± 26 81 ± 50 179 ± 127 227 ± 170 0.27 0.13
  Leuctridae Leuctraa Shr/Scr/Col 173 ± 104 892 ± 557 85 ± 41 138 ± 43 0.23 0.29
  Perlodidae Perlodidaeb Pre/Shr 2 ± 3 38 ± 21 0 ± 0 31 ± 13 0.75 0.05
Ephemeroptera Baetidae Baetidae (Baetis rhodani) Scr/Col 358 ± 159 906 ± 446 183 ± 142 194 ± 81 0.39 0.63
Trichoptera Limnephilidae Limnephilidaec Shr 0 ± 0 38 ± 12 0 ± 0 19 ± 9 0.08 0.40
  Beraeidae Beraea maurus Shr/Col 6 ± 5 4 ± 3 4 ± 5 8 ± 5 0.50 0.25
  Odontoceridae Odontocerum albicorne Shr/Pre 15 ± 7 23 ± 13 12 ± 8 21 ± 10 3.43 0.20
  Polycentropodidae Plectrocnemia conspersa Pre/Fil 4 ± 3 0 ± 0 4 ± 3 4 ± 3 3.07 1.60
  Rhyacophilidae Rhyacophilad Pre 0 ± 0 12 ± 5 23 ± 15 58 ± 25 2.73 2.95
Coleoptera Dytiscidae Oreodytes sanmarkii (ad) Shr/Pre 4 ± 3 10 ± 8 17 ± 11 33 ± 17 1.35 1.03
  Elmidae Elmis aenea (lv) Scr/Shr 296 ± 194 462 ± 174 440 ± 173 1210 ± 442 0.36 0.40
  Elmidae Elmis aenea (ad) Scr/Shr 56 ± 62 108 ± 60 179 ± 110 400 ± 317 0.27 0.35
  Scirtidae Elodes sp. (lv) Scr/Shr 15 ± 13 42 ± 21 27 ± 15 40 ± 36 0.64 1.13
Diptera Chironomidae Chironomidaee mixed 106 ± 44 885 ± 284 600 ± 252 3302 ± 968 0.17 0.37
  Pediciidae Dicranota sp. Pre 31 ± 15 35 ± 18 44 ± 29 42 ± 18 0.48 1.67
  Simuliidae Simuliidae Fil 163 ± 110 231 ± 144 88 ± 47 104 ± 73 0.43 ND
Oligochaeta Oligochaeta Oligochaeta Col 25 ± 11 40 ± 17 19 ± 20 48 ± 26 10.20 5.75
Hydracarina Hydracarina Hydracarina Pre 8 ± 8 13 ± 6 12 ± 8 4 ± 3 0.17 ND
  1. Functional Feeding Groups (FFG, Di Sabatino and others 2000; Tachet and others 2002), Density (± sem) and Biomass of the Before and After Control Impact (BACI) Design in the Reference Stream Birnie Burn (Before, After) and Treatment Stream Cairn Burn (Control, Impact).
  2. Col = collector, absorber, Shr = shredder, Scr = scraper, Fil = filter-feeder, Pre = predator, piercer, parasite. lv = larvae, ad = adult. ND = not determined.
  3. aL. hippopus, L. moselyi, L. fusca, L. inermis, L. nigra.
  4. bIsoperla sp., Diura bicaudata.
  5. cAllogamus auricolis, Potamophylax sp.
  6. dR. munda, R. oblitera, R. dorsalis.
  7. eMostly Orthocladinae.