Bombus Pollinators

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The Bombus genus is one of the largest genus for pollinators in the United States, with over 250 species known (Carvell, 2002). B. californicus is a species with a wide range, extending through all of California and even into parts of Nevada and Oregon (Soltz, 1987). This particular species is a generalist species; it feeds from many plants and inhabits the Oak Woodland Savanna (see Table 1) that is often found near grassland habitats. It is a ground nesting bee that lives in small colonies that have between 50 and 400 individuals (Cueva del Castillo et al., 2015). These are colony bees as, starting in the 1980s, there became a drastic reduction in the number of queens found foraging (only two were found in 1980). This led to

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