Floral Resources and Nesting Requirements of the Ground-Nesting Social Bee, Lasioglossum malachurum (Hymenoptera: Halictidae), in a Mediterranean Semiagricultural Landscape

Table 4

Physical-chemical and granulometry characteristics of the soils sampled in 2008 at nesting sites of L. malachurum.

Sample code	Organic matter (mg)	pH	% gravel	% sand	% silt	% clay
A	12.5	7.7	14.6	26.4	31.9	27.1
B	11.7	7.4	3.0	12.5	62.7	21.8
C	6.5	7.8	25.7	33.3	25.8	15.2
D	17.5	7.5	13.9	40.6	28.9	16.5
E	48.2	7.5	4.0	10.0	45.6	40.4