Ecological Archives M077-015-A1

Louise M. Egerton-Warburton, Nancy Collins Johnson, and Edith B. Allen. 2007. Mycorrhizal community dynamics following nitrogen fertilization: a cross-site test in five grasslands. Ecological Monographs 77:527–544.

Appendix A. A table listing measures of AMF diversity and species richness in each site and N-fertilization treatment in 1997 and 1998.

TABLE A1. AMF spore species richness, diversity, and evenness following N fertilization in five grasslands. Data are expressed as the mean with standard error (Sobs, alpha) or variance (Jack1, Chao2, H') in parentheses.

     

AMF species richness

AMF species diversity

Evenness

Site

Year

Treatment

Sobs

Chao2

Jack1

Fisher’s alpha

H'

EG

SEV

1997

Non

18 (2)

50 (10)

38 (10)

3.95 (0.74)

1.59 (0.14)

0.434

   

N-fert

12 (2)

16 (2)

22 (5)

2.77 (0.51)

1.27 (0.22)

0.667

 

1998

Non

25 (1)

27 (2)

32 (7)

6.97 (2.10)

2.60 (0.10)

0.131

   

N-fert

18 (2)

22 (7)

28 (2)

2.84 (0.66)

2.06 (0.16)

0.243

     
 
 
 
   
 

SGS

1997

Non

28 (3)

39 (1)

32 (5)

4.82 (0.77)

1.80 (0.08)

0.381

   

N-fert

18 (1)

20 (1)

19 (3)

2.87 (0.45)

1.71 (0.07)

0.628

 

1998

Non

26 (3)

28 (3)

34 (8)

6.93 (1.61)

2.22 (0.18)

0.235

   

N-fert

16 (1)

17 (1)

20 (5)

6.86 (2.10)

1.80 (0.14)

0.534

     
 
 
 
   
 

KBS

1997

Non

32 (1)

33 (1)

34 (4)

6.76 (1.41)

1.52 (0.08)

0.183

   

N-fert

19 (2)

25 (2)

25 (7)

3.70 (0.71)

0.69 (0.08)

0.687

 

1998

Non

38 (1)

40 (3)

46 (8)

8.92 (2.21)

2.55 (0.16)

0.215

   

N-fert

28 (2)

32 (8)

35 (8)

6.64 (1.76)

2.38 (0.13)

0.444

     
 
 
 
   
 

CDR

1997

Non

27 (1)

34 (6)

35 (3)

5.36 (1.06)

1.45 (0.15)

0.191

   

N-fert

22 (1)

31 (6)

32 (3)

3.67 (0.60)

0.71 (0.09)

0.363

 

1998

Non

28 (1)

29 (1)

34 (7)

5.85 (1.18)

2.27 (0.19)

0.053

   

N-fert

22 (1)

24 (3)

25 (4)

4.42 (0.79)

2.17 (0.17)

0.191

     
 
 
 
   
 

KZA

1997

Non

29 (2)

43 (3)

44 (7)

5.14 (0.90)

1.56 (0.08)

0.718

   

N-fert

39 (3)

52 (2)

54 (8)

7.97 (1.63)

2.68 (0.04)

0.598

   

N+P

35 (2)

47 (3)

43 (8)

5.87 (1.01)

2.01 (0.03)

0.678

 

1998

Non

17 (1)

18 (1)

19 (3)

5.14 (1.50)

2.02 (0.08)

0.316

   

N-fert

25 (1)

26 (1)

29 (5)

7.97 (1.73)

2.28 (0.04)

0.285

   

N+P

32 (1)

33 (1)

34 (3)

5.87 (1.87)

2.30 (0.03)

0.207

† Site abbreviations correspond to those given in Table 1.



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