Ecological Archives E093-090-A3

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 C. Means (± SE) of seed set from floral manipulations for each population × year combination along with tests for differences between pairs of treatments.

TABLE C1. Seed set [seeds per fruit ± SE (N)] from experimental floral manipulations in 12 populations between 2006 and 2008. The last four columns of the table show the P values from one-tailed t tests, with the a priori predicted direction of the effect indicated in the column heading. Tests of differences between treatments at the regional level (bottom of table) were conducted using treatment least square means from ANOVAs including year.

Population

Year

Supplemental Outcross (SO)

Supplemental Self (SS)

Unmanipulated (U)

Emasculated (E)

SO > U

SS > U

SO > SS

U > E

Black Gulch

2007

24.6 ± 3.8 (16)

21.6 ± 4.3 (9)

23.0 ± 4.7 (12)

20.2 ± 3.6 (14)

0.395

0.588

0.306

0.322

Borel Rd

2006

28.9 ± 1.8 (57)

 

27.5 ± 1.9 (57)

26.2 ± 1.4 (55)

0.292

 

 

0.295

Borel Rd

2007

34.0 ± 1.3 (71)

29.7 ± 1.3 (61)

31.7 ± 1.5 (59)

31.5 ± 1.9 (61)

0.129

0.662

0.068

0.462

Borel Rd

2008

24.8 ± 1.5 (68)

25.2 ± 1.4 (72)

23.7 ± 1.6 (67)

23.3 ± 1.5 (74)

0.306

0.348

0.509

0.434

China Garden

2008

26.0 ± 2.3 (46)

32.6 ± 2.3 (46)

26.2 ± 2.4 (39)

25.8 ± 2.0 (47)

0.516

0.025

0.982

0.461

Cow Flat

2006

26.1 ± 2.7 (28)

 

21.4 ± 3.8 (20)

21.1 ± 3.1 (21)

0.161

 

 

0.483

Cow Flat

2007

28.3 ± 2.5 (29)

23.2 ± 2.7 (28)

26.3 ± 2.2 (37)

25.8 ± 3.0 (36)

0.281

0.668

0.388

0.442

Cow Flat

2008

30.6 ± 1.8 (60)

33.4 ± 1.8 (59)

27.6 ± 2.3 (49)

28.6 ± 2.3 (50)

0.154

0.024

0.843

0.616

Delonegha

2006

45.8 ± 6.4 (10)

 

33.9 ± 4.3 (14)

32.9 ± 4.8 (12)

0.071

 

 

0.438

Erskine Crk

2006

39.2 ± 2.1 (62)

 

34.8 ± 2.6 (55)

30.3 ± 2.2 (62)

0.099

 

 

0.091

Erskine Crk

2007

30.6 ± 2.8 (37)

32.9 ± 2.7 (39)

27.4 ± 2.7 (39)

31.2 ± 3.0 (39)

0.200

0.080

0.716

0.830

Golf Course

2006

41.1 ± 4.1 (28)

 

34.6 ± 3.3 (37)

35.6 ± 3.4 (36)

0.114

 

 

0.582

Golf Course

2008

32.2 ± 2.0 (43)

35.1 ± 2.5 (40)

32.1 ± 2.4 (37)

34.0 ± 2.4 (36)

0.491

0.186

0.817

0.710

Green Rock

2006

24.5 ± 1.7 (46)

 

20.9 ± 2.2 (42)

25.9 ± 2.6 (40)

0.097

 

 

0.925

Green Rock

2007

26.7 ± 2.9 (28)

33.9 ± 2.6 (23)

26.7 ± 3.4 (25)

26.8 ± 3.2 (20)

0.497

0.051

0.953

0.510

Green Rock

2008

24.9 ± 1.3 (70)

22.7 ± 1.4 (70)

24.1 ± 1.3 (67)

26.7 ± 1.3 (62)

0.333

0.773

0.117

0.923

Keyesville

2006

37.9 ± 2.1 (40)

 

37.0 ± 3.0 (27)

40.7 ± 2.0 (33)

0.397

 

 

0.845

Keyesville

2007

27.5 ± 3.5 (17)

28.7 ± 4.1 (19)

25.1 ± 3.6 (19)

29.7 ± 4.5 (20)

0.314

0.258

0.582

0.786

Keyesville

2008

33.9 ± 1.2 (58)

33.3 ± 1.6 (63)

31.1 ± 1.8 (46)

30.0 ± 1.6 (55)

0.098

0.159

0.397

0.326

Mill Creek

2006

32.7 ± 3.7 (18)

 

26.7 ± 4.6 (14)

34.6 ± 3.0 17)

0.161

 

 

0.916

Mill Creek

2008

31.9 ± 2.4 (53)

32.7 ± 2.3 (55)

31.9 ± 2.4 (43)

32.1 ± 2.1 (54)

0.495

0.402

0.598

0.534

Site 22

2006

45.5 ± 2.0 (60)

 

42.0 ± 2.1 (60)

39.8 ± 2.3 (65)

0.116

 

 

0.242

Site 22

2008

41.6 ± 1.8 (63)

37.4 ± 1.7 (63)

37.4 ± 1.8 (61)

41.2 ± 1.9 (67)

0.053

0.502

0.052

0.928

Squirrel Mtn

2006

37.4 ± 2.0 (38)

 

34.3 ± 1.8 (54)

34.6 ± 3.0 (39)

0.123

 

 

0.534

Squirrel Mtn

2008

31.4 ± 2.5 (32)

34.2 ± 2.3 (31)

27.0 ± 2.8 (54)

28.8 ± 2.8 (39)

0.120

0.031

0.788

0.681

 

 

 

 

 

 

 

 

 

 

Regions

 

 

 

 

 

 

 

 

 

Center

All

29.5 ± 1.0 (244)

31.5 ± 1.1 (188)

27.5 ± 1.1 (216)

27.2 ± 1.0 (237)

0.131

0.010

0.913

0.386

Intermediate

All

29.0 ± 0.6 (470)

27.9 ± 0.7 (317)

27.0 ± 0.7 (420)

28.1 ± 0.7 (434)

0.025

0.078

0.710

0.898

Edge

All

38.2 ± 0.8 (363)

35.3 ± 1.1 (172)

34.8 ± 0.9 (366)

35.2 ± 0.9 (374)

0.004

0.072

0.242

0.652

Overall

All

32.2 ± 0.5 (1078)

30.8 ± 0.6 (678)

29.9 ± 0.5 (1003)

30.4 ± 0.5 (1045)

<0.001

0.002

0.495

0.790


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