Ecological Archives E094-185-A2

Seth M. Munson, Esteban H. Muldavin, Jayne Belnap, Debra P. C. Peters, John P. Anderson, M. Hildegard Reiser, Kirsten Gallo, Alicia Melgoza-Castillo, Jeffrey E. Herrick, Tim A. Christiansen. 2013. Regional signatures of plant response to drought and elevated temperature across a desert ecosystem. Ecology 94:2030–2041. http://dx.doi.org/10.1890/12-1586.1

Appendix B (Table B1). Analysis of covariance (ANCOVA) results that relate the changes in cover of dominant plant species/functional types and climate variables by data set.

Model

df

F

P

 

Model

df

F

P

perennial grasses ~ summer precipitation (foothills)

Larrea tridentata ~ summer precipitation

sumP

1

6.639

< 0.01

sumP

1

4.65

< 0.05

data set

7

0.359

0.91

data set

9

0.23

0.98

sumP × data set

7

1.06

0.42

sumP × data set

9

0.14

0.99

 

 

perennial grasses ~ summer precipitation (uplands)

Flourensia cernua ~ annual PMDI

sumP

1

34.85

< 0.0001

ann_PMDI

1

13.20

< 0.001

data set

11

0.98

0.47

data set

3

0.69

0.57

sumP × data set

11

0.65

0.78

ann_PMDI × data set

3

0.01

0.92

 

 

woody vegetation ~ winter precipitation (uplands)

Prosopis glandulosa ~ winter PMDI

winP

1

46.45

< 0.0001

win_PMDI

1

18.48

< 0.0001

data set

11

0.52

0.76

data set

6

0.21

0.97

winP × data set

11

0.20

0.90

win_PMDI × data set

6

0.40

0.85

 

 

Bouteloua eriopoda ~ summer precipitation (logarithmic)

Species richness ~ summer precipitation (logarithmic)

sumP

1

29.01

< 0.0001

sumP

1

105.77

< 0.0001

data set

11

0.85

0.58

data set

13

1.26

0.65

sumP × data set

11

0.14

0.91

sumP × data set

13

1.03

0.21

 

 

Bouteloua gracilis ~ summer precipitation

 

sumP

1

5.94

< 0.05

 

data set

2

0.16

0.86

 

sumP × data set

2

0.19

0.69

 

 

 

 

 

um = summer, win = winter, ann = annual, P = precipitation,

PMDI = Palmer modified drought index


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