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Table II
Nectar standing crop (μL), nectar secretion rate (μL/24 hrs) and nectar sugar concentration (%) of native (Epilobium hirsutum and Stachys palustris) and alien (Impatiens glandulifera) plant species (mean ± S.E.).
| Plant species | Nectar standing crop | Nectar secretion rate | Nectar sugar concentration |
|---|---|---|---|
| E. hirsutum | 0.054 ± 0.007 | 0.502 ± 0.072 | 47.1 ± 1.4 |
| S. palustris | 0.011 ± 0.003 | 0.167 ± 0.049 | 47.1 ± 1.1 |
| I. glandulifera | 0.043 ± 0.016 | 10.619 ± 2.176 | 53.9 ± 2.2 |