Flora and Fauna Changes During Conversion from Conventional to Organic Farming

Table 5.1.   Summary of the arthropods identified in the Skylark pellets, and the corresponding catches in the field. The sampling seasons were divided into three periods, roughly corresponding to the months of May, June and July. Taxa selected as important Skylark prey are marked with an asterisk (*). Abbreviations: Img. = imagines. Juv. = juveniles. Arthropod class/order Arthropod group Total no. in Skylark pellets Total no. in suction samples May June July Total May June July Total Arachnida Araneae* 45 111 135 291 273 2936 4103 7312 Chilopoda 0 0 0 0 9 194 130 333 Diplopoda 0 0 0 0 36 127 30 193 Hemiptera   Auchenorrhyncha* 47 41 13 101 1148 626 1637 3411 Heteroptera 1 1 1 3 9 113 621 743 Lepidoptera   Img.   3 4 1 8 11 81 247 339 Juv.*   4 9 34 47 47 284 205 536 Diptera Tipulidae img. 0 0 1 1 4 316 9 329 Syrphidae img. 0 1 3 4 3 14 123 140 Syrphidae juv.* 1 13 180 194 5 377 1743 2125 Other Diptera 5 5 14 24 551 4845 6698 12094 Neuroptera Chrysopidae img. 0 0 0 0 23 34 87 144 Chrysopidae juv.* 0 16 57 73 7 297 391 695 Coleoptera Carabidae img.* 93 163 72 328 148 1174 1994 3316 Carabidae juv.* 0 25 17 42 32 51 101 184 Staphylinidae img.* 119 134 66 319 705 2837 2844 6386 Staphylinidae juv.* 6 6 10 22 61 345 137 543 Elateridae   0 1 0 1 1 24 41 66 Lathridiidae img. 0 0 0 0 67 70 184 321 Cantharidae 0 0 0 0 36 768 99 903 Nitidulidae img.* 14 11 2 27 74 193 223 490 Cryptophagidae img.*   26 25 3 54 560 472 825 1857 Coccinellidae img. 0 0 0 0 24 71 186 281 Coccinellidae juv. 0 0 0 0 19 409 635 1063 Chrysomelidae img.*   151 82 56 289 216 125 677 1018 Chrysomelidae juv.   2 3 5 10 36 681 65 782 Curculionidae img.*   67 54 71 192 476 326 229 1031 Hymenoptera Symphyta juv.* 1 22 5 28 116 380 33 529 Parasitica   3 14 38 55 620 5806 10069 16495