Ecological Archives E086-052-A1

Sarah J. Richardson, Robert B. Allen, David Whitehead, Fiona E. Carswell, Wendy A. Ruscoe, and Kevin H. Platt. 2005. Climate and net carbon availability determine temporal patterns of seed production by Nothofagus. Ecology 86:972–981.

Appendix A (Table A1). Descriptive statistics for seed production data from mountain beech (Nothofagus solandri var. cliffortioides) forest at nine elevations for the period 1973–2002.

 

RAW DATA

LOG 10 transformed data

Elevation
(m)

Mean

SD

CV

Minimum

Maximum

ACF
lag = 1

Mean

SD

CV

1021

672.4

1079.8

1.61

0

3850.7

–0.342

1.75

1.26

0.72

1050

1980.7

2581.9

1.30

0

7407.1

–0.301

2.37

1.29

0.54

1097

1688.5

2142.9

1.27

0

6437.5

–0.360

2.30

1.27

0.55

1143

1771.4

2255.5

1.27

0

6423.2

–0.340

2.33

1.30

0.56

1190

1792.5

2328.9

1.30

0

6342.9

–0.329

2.34

1.27

0.55

1242

1734.1

2314.1

1.33

0

8087.5

–0.361*

2.36

1.24

0.53

1295

1754.5

2402.2

1.37

0

8641.1

–0.274

2.36

1.21

0.51

1340

1924.7

2644.9

1.37

0

9557.1

–0.216

2.37

1.23

0.52

1372

1398.9

2296.8

1.64

0

10067.9

–0.211

2.12

1.26

0.59

   Notes: For each elevation, mean seedfall in each year was calculated from two seed traps and the summary statistics here use those annual means.  Autocorrelation coefficients (ACFs) and partial autocorrelation coefficients (PACF) were examined for lag intervals up to five years; there were no significant PACFs and ACFs were only significant at one elevation for a one year lag (* = P < 0.05,  N = 30 years).  Mean correlation coefficient among raw seed production time series at the nine elevations was r = 0.84, df = 28, P< 0.0001 but the pairwise correlation coefficient was dependent upon spatial distance (i.e., elevational distance): correlation r = 0.992 – 0.001 × elevational distance(m).



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