Distribution and forage use of exotic bumblebees in South Island, New Zealand
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10,957 citations
"Distribution and forage use of exot..." refers background in this paper
...This index is insensitive to sample size (Magurran, 1988), important because samples are inevitably larger for the more common species....
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10,077 citations
"Distribution and forage use of exot..." refers methods in this paper
...To compare the diet breadth of the species recorded, a Simpson’s index was calculated for the diversity of flowers visited (Simpson, 1949):...
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...To compare the diet breadth of the species recorded, a Simpson’s index was calculated for the diversity of flowers visited (Simpson, 1949): where ni is the number of flowers of the ith species that were visited, N is the total number of flowers visited, and s is the total number of flower species…...
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1,150 citations
"Distribution and forage use of exot..." refers background in this paper
...In addition to T. pratense and L. corniculatus, both of which are highly dependent on insects for pollination (Grime et al., 1988), we found substantial numbers of bumblebees visiting lupin (Lupinus arboreus and L. polyphyllus), thistles (Cirsium vulgare), and broom (Cytisus scoparius)....
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...Although H. perforatum is believed to be increasing in abundance in the U.K., the other main forage plants we identified in New Zealand (E. vulgare, L. corniculatus and T. pratense) are all declining (Grime et al., 1988; Rich and Woodruff, 1996)....
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...Each of these species is known to depend substantially or wholly on bee pollinators in order to reproduce (Grime et al., 1988; Stout, 2000; Stout et al., 2002)....
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...corniculatus, both of which are highly dependent on insects for pollination (Grime et al., 1988), we found substantial numbers of bumblebees visiting lupin (Lupinus arboreus and L....
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648 citations
"Distribution and forage use of exot..." refers background or result in this paper
...It seems likely that, in Europe at least, agricultural intensification is primarily responsible for the decline of many bumblebee species (Rasmont, 1988; Osborne and Corbet, 1994; Goulson, 2003a), although it is difficult to provide unequivocal evidence....
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...of many bumblebee species (Rasmont, 1988; Osborne and Corbet, 1994; Goulson, 2003a), although it is difficult to provide unequivocal evidence....
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...Our results lend further support to the claim that exotic (bumble- and honey-) bees are important pollinators of various weeds (Sugden et al., 1996; Stout et al., 2002; Goulson, 2003b; Hanley and Goulson, 2003)....
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...Both B. terrestris and B. hortorum, by contrast, remain common throughout most of Northwestern Europe (Goulson, 2003a)....
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360 citations
"Distribution and forage use of exot..." refers background or result in this paper
...It seems likely that, in Europe at least, agricultural intensification is primarily responsible for the decline of many bumblebee species (Rasmont, 1988; Osborne and Corbet, 1994; Goulson, 2003a), although it is difficult to provide unequivocal evidence....
[...]
...Our results lend further support to the claim that exotic (bumble- and honey-) bees are important pollinators of various weeds (Sugden et al., 1996; Stout et al., 2002; Goulson, 2003b; Hanley and Goulson, 2003)....
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...Both B. terrestris and B. hortorum, by contrast, remain common throughout most of Northwestern Europe (Goulson, 2003a)....
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