Generalist ground-nesting bees dominate diversity survey in intensively managed agricultural land Author Ahrenfeldt, Erica Juel Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark (ericajuel @ hotmail. com; les @ plen. ku. dk). Author Kollmann, Johannes Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark (ericajuel @ hotmail. com; les @ plen. ku. dk). & Department of Ecology and Ecosystem Management, School of Life Sciences Weihenstephan, Technical University of Munich, Emil-Ramann-Str. 6, 85354 Freising, Germany (jkollmann @ wzw. tum. de). Author Madsen, Henning Bang Department of Biology, Faculty of Science, University of Copenhagen, Universitetsparken 15, 21000 Copenhagen Ø, Denmark (hbmadsen @ bio. ku. dk). Author Skov-Petersen, Hans Department of Geosciences and Natural Resource Management, Faculty of Science, University of Copenhagen, Rolighedsvej 23, 1958 Frederiksberg C, Denmark (hsp @ plen. ku. dk). Author Sigsgaard, Lene Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark (ericajuel @ hotmail. com; les @ plen. ku. dk). text Journal of Melittology 2019 2019-01-23 2019 82 1 12 http://dx.doi.org/10.17161/jom.v0i82.7057 journal article 10.17161/jom.v0i82.7057 2325-4467 13145960

Table 2. Total number of wild bees and bumble bees collected in pan traps from late May to late June 2010 in the margin of 12 strawberry fields. Floral specialization has been included (Martin, 2014). High-intensity sites were four conventional strawberry fields treated with herbicides and insecticides, while low-intensity sites were six organic fields and two conventional ones only treated with fungicides.

Wild bees	High intensity	Low intensity	Total bees	Floral relationship
Andrena bicolor	0	1	1	polylectic+
A. carantonica	22	23	45	polylectic+
A. chrysosceles	0	1	1	polylectic+
A. cineraria	1	3	4	polylectic+
A. fucata	1	0	1	polylectic+
A. fulva	1	9	10	polylectic+
A. haemorrhoa	50	230	280	polylectic+
A. helvola	29	92	121	polylectic+
A. minutula	0	4	4	polylectic+
A. minutuloides	2	2	4	polylectic
A. nigroaenea	25	42	67	polylectic+
A. nitida	1	0	1	polylectic+
A. praecox	0	21	21	oligolectic (Salix spp.)
A. semilaevis	0	6	6	polylectic
A. subopaca	2	3	5	polylectic+
A. tibialis	2	1	3	polylectic+
A. wilkella	0	3	3	oligolectic (Fabaceae spp.)
Total Andrena spp.	136	441	577
Bombus cryptarum	0	2	2	polylectic
B. hortorum	0	1	1	polylectic
B. hypnorum	1	3	4	polylectic
B. lapidarius	1	1	2	polylectic
B. lucorum	3	3	6	polylectic+
B. pascuorum	2	1	3	polylectic+
B. pratorum	1	4	5	polylectic+
B. terrestris	3	4	7	polylectic+
Total Bombus spp.	11	19	30
Halictus tumulorum	2	2	4	polylectic+
Lasioglossum albipes	8	0	8	polylectic+
L. calceatum	0	8	8	polylectic+
L. leucopus	0	4	4	polylectic
L. minutissimum	0	1	1	polylectic
L. parvulum	1	0	1	polylectic+
L. punctatissimum	0	1	1	polylectic+
L. quadrinotatum	0	1	1	polylectic
Total Lasioglossum & Halictus spp.	11	17	28
Nomada fabriciana	0	2	2	—
N. ferruginata	0	1	1	—
N. flavogutata	0	2	2	—
N. marshamella	3	3	6	—
N. panzeri	5	44	49	—
Total Nomada spp.	8	52	60
Osmia bicornis	0	5	5	polylectic+
Chelostoma florisomnis	0	1	1	oligolectic (Ranunculaceae spp.)
Total Osmia spp. & Chelostoma spp.	0	6	6
Total bees	166	535	701
Total species	22	36	40