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Status of Pollinators in North America
I
Annual Bee Variability of Bee Abundances
Family
Genus
Species
Annual Variability
Years
Reference
Apidae
Apis
1
5.04
10
Roubik and Wolda, 2001
Apidae
Centris
1
1.77
4
Roubik, 1989; unpublished data
Apidae
Centris
1
4.74
17
Roubik and Wolda, 2001
Apidae
Euglossini
6
1.77
2
Pearson and Dressler, 1985
Apidae
Euglossini
32
1.36
20
Roubik, 2001
Apidae
Meliponini
10
4.06
17
Roubik and Wolda, 2001
Colletidae
Ptiloglossa
1
2.45
17
Roubik and Wolda, 2001
Halictidae
Megalopta
2
2.15
17
Roubik and Wolda, 2001
Halictidae
Rhinetula
1
3.45
17
Roubik and Wolda, 2001
Megachilidae
Megachile
3
2.07
3
Frankie et al., 1998
Megachilidae
Osmia
1
2.46
2-3
Frankie et al., 1998
NOTE: Annual variability in bee abundance was determined from short- and long-term censuses in two tropical regions (Peru and Panama) and one temperate region (California).
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OCR for page 307
Status of Pollinators in North America
I
Annual Bee Variability of Bee Abundances
Family
Genus
Species
Annual Variability
Years
Reference
Apidae
Apis
1
5.04
10
Roubik and Wolda, 2001
Apidae
Centris
1
1.77
4
Roubik, 1989; unpublished data
Apidae
Centris
1
4.74
17
Roubik and Wolda, 2001
Apidae
Euglossini
6
1.77
2
Pearson and Dressler, 1985
Apidae
Euglossini
32
1.36
20
Roubik, 2001
Apidae
Meliponini
10
4.06
17
Roubik and Wolda, 2001
Colletidae
Ptiloglossa
1
2.45
17
Roubik and Wolda, 2001
Halictidae
Megalopta
2
2.15
17
Roubik and Wolda, 2001
Halictidae
Rhinetula
1
3.45
17
Roubik and Wolda, 2001
Megachilidae
Megachile
3
2.07
3
Frankie et al., 1998
Megachilidae
Osmia
1
2.46
2-3
Frankie et al., 1998
NOTE: Annual variability in bee abundance was determined from short- and long-term censuses in two tropical regions (Peru and Panama) and one temperate region (California).
SOURCE: Adapted from Roubik, 2001.
OCR for page 308
Status of Pollinators in North America
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