Ecological Archives E093-090-A2

David A. Moeller, Monica A. Geber, Vincent M. Eckhart, and Peter Tiffin. 2012. Reduced pollinator service and elevated pollen limitation at the geographic range limit of an annual plant. Ecology 93:1036–1048.

Appendix B. The results of regression analyses of bee collection rate in relation to precipitation.

TABLE B1. Results of regression analyses of bee collection rates (bees/flower/30 minute collection period) in relation to precipitation across the entire growing season (total precip) or for intervals during the winter (November – January) and spring (February – June).

 

All Bees

Specialists

Generalists

Precipitation Phase

F

P

F

P

F

P

Current Year Total Precip

11.4

0.006

0.0

0.938

53.6

<0.0001

Current Year Winter Precip

1.6

0.220

0.5

0.481

3.2

0.086

Current Year Spring Precip

22.6

<0.0001

4.4

0.048

44.7

<0.0001

Previous Year Total Precip

29.1

<0.001

8.5

0.013

35.1

<0.0001

Previous Year Winter Precip

0.1

0.734

3.1

0.104

1.1

0.324

Previous Year Spring Precip

1.4

0.266

0.1

0.807

3.1

0.104


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