Figure 3 (above). Early bloom of Contra Costa Goldfields, , in the area north of McCoy Reservoir on 8 April 2006. Patch with pan-traps for monitoring native bees. Note water standing in mud flats from March rains.

Figure 4 (below). Blue pan-trap bowl with native bee caught in the water with detergent on 23 April 2006.

Figure 5 (above). Tumuli of nests of pollen host-specific native solitary bees of the Andrena (with nickel for scale) on 23 April 2006. Note that these nests are in bare ground adjacent to the vegetated areas containing their flower hosts. The soil has just started to dry and crack.

Figure 6 (below). Mixed patch of Lasthenia conjugens and in the eastern project area (labeled Central Area on Figure1) on 29 April 2006.

Figure 7 (above). Patch of Lasthenia conjugens (peripherally) and Downingia pulchella (centrally) with pan-traps on 6 May 2006.

Figure 8 (below). Nest site of an undescribed of native solitary bee in the genus Panurginus that specializes in collecting pollen from Downingia. The bee nest tumuli and cruising males were abundant in the more sparsely vegetated area in the center of the photo on 13 May 2006.

Figure 9 (above). Tumuli of nests of an undescribed species of native solitary bee in the genus Panurginus that specializes in collecting pollen from Downingia with a penny (center of photo) for scale on 13 May 2006.

Figure 10 (below). Remnants of Lasthenia conjugens in dried pool bottom in the Hawthorne Mill area west of McCoy Reservoir with pan-traps on 28 May 2006. Note the thick grass vegetation in the upland areas surrounding the pool area. APPENDIX:

Site Photos

(see Figure 2 for photo locations)

Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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Photodocumentation of Hawthorne Mill project areas (see Figure 2 for photograph locations)

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