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

Figure 3

Cumulative frequency curves of soil particles sizes from 5 nesting sites of L. malachurum. On the $x$-axes there are represented the values expressed as $\phi$-units (-log₂ of the diameter of the particles, in mm) and on the $y$-axes the cumulative percentages of the particles representing the different granulometric classes. (a)–(e): sites A-E.

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