Ecological Archives M078-003-A4

Lorena Gómez-Aparicio and Charles D. Canham. 2008. Neighborhood models of the effects of invasive tree species on ecosystem processes. Ecological Monographs 78:69–86.

Appendix D. Parameter estimates and two-unit support intervals for the most likely models analyzing the effects of dominant tree species (both invasives and natives) on soil properties.

Parameter

a[Site 1]

a [Site 2]

a [Site 3]

a [Site 4]

a [Site 5]

a [Site 6]

α

β

γ

X0

Xb

b

λACPL

λ AIAL

λ ACSA

λ FRAM

λ QURU

Forest floor depth (mm)

13.24
[10.92–15.35]

11.78
[9.60–14.01]

22.50
[20.36–24.86]

20.74
[18.57–23.03]

20.64
[18.37–22.80]

12.49
[10.31–14.75]

2.54
[2.21–2.62]

   

6.75
[5.77–7.65]

7.74
[5.11–9.12]

26.25
[18.83–33.02]

0.14
[0–0.20]

0
[0–0.23]

0.15
[0–0.30]

0
[0–0.16]

0.93
[0.73–1]

 pH

4.06
[3.92–4.21]

4.28
[4.13–4.43]

3.79
[3.65–3.94]

5.35
[5.22–5.48]

4.38
[4.25–4.53]

5.21
[5.05–5.36]

1.48
[1.37– 1.62]

   

1.09
[1.00–1.21]

1.37
[1.29–1.46]

2.96
[2.52–3.39]

0.99
[0.83–1]

0.47
[0.30–0.61]

0.12
[0.09–0.26]

0.45
[0.39–0.62]

0.05
[0.01–0.16]

Extractable Ca
(mg/g)

8.37
[0–24.77]

11.18
[0–28.34]

10.53
[0–29.01]

206.89
[189.3–223.45]

43.97
[26.60–60.02]

103.07
[85.55– 119.04]

3.00
[2.79–3.00]

2.99
[2.87–3.00]

0.0003
[0.002–0.0004]

   

126.38
[100.4–153.55]

0.98
[0.95–1]

0.72
[0.62–0.91]

0.18
[0.10–0.22]

0.11
[0–0.32]

0
[0–0.11]

Extractable K
(mg/g

3.79
[2.99–4.60]

1.89
[1.11–2.71]

3.12
[2.23–3.84]

4.86
[4.03–5.63]

4.08
[3.24–4.86]

6.22
[5.41–7.03]

0.85
[0.73–0.91]

   

5.70
[5.08–6.27]

19.75
[18.73–20.76]

0.59
[0.46–0.73]

0.50
[0.35–0.61]

0.43
[0.29–0.54]

0.09
[0–0.13]

0.18
[0.11–0.26]

0
[0–0.11]

Mass N
(g/m2)

325.08
 [300.70–347.84]

234.83
[211.38–258.31]

288.89
[261.45–309.12]

345.90
[323.44–371.85]

360.71
[339.01–385.96]

292.81
[270.84–317.69]

0.97
 [0.85–1.09]

   

6.95
[6.08–7.92]

5.22
[4.89–5.88]

11.59
[10.08–13.09]

0.30
[0.10–0.47]

0.80
[0.67–0.93]

0.21
[0.15–0.38]

0.46
[0.30–0.68]

0.63
[0.61–0.80]

C:N

11.55
[10.80–12.19]

12.39
[11.65–13.08]

13.17
[12.52–13.97]

15.62
[14.68–16.40]

10.89
[10.18–11.60]

11.05
[10.33–11.77]

0.87
[0.78–0.92]

   

1.00
[1.00–1.26]

1.04
[0.94–1.17]

3.35
[2.51–4.17]

0.01
[0.00–0.10]

0.11
[0.08–0.21]

0.10
[0.00–0.20]

0
[0.00–0.14]

0.96
[0.78–1.00]

NO3-
(µg/g)

0.94
[0.91–0.98]

0.49
[0.06–0.95]

0.42
[0.02–0.92]

1.59
[1.16–2.06]

3.25
[2.80–3.71]

1.93
[1.45–2.36]

1.29
[1.13–1.60]

   

1.42
[1.35–1.55]

18.99
[18.01–19.67]

37.39
[31.13–40.10]

0.35
[0.22–0.55]

0.09
[0.01–0.23

0.14
[0.03–0.22]

0
[0–0.09]

0.0002
[0–0.10]

Microbial biomass C
(µg C/g)

579.18
[486.51–671.85]

291.21
 [195.1–378.57]

365.02
[270.11–452.63]

442.68
[354.14–540.07]

624.08
[514.87–702.09]

765.93
[658.62–856.35]

2.46
[2.34–2.51]

2.33
[2.26–2.42]

0.003
[0.003–0.004]

   

337.82
[282.08–381.73]

0.50
[0.29–0.80]

0.40
[0.17–0.62]

0.01
[0–0.17]

0.90
[0.79–1]

0.14
[0.00–0.34]

Microbial biomass N
(µg N/g)

61.13
[53.49–69.38]

39.47
[31.57–47.16]

41.94
[33.56–49.49]

37.71
[30.16–46.02]

54.73
[47.07–62.94]

50.84
[43.73–59.74]

2.62
[2.42– 2.79]

1.54
[1.49–1.59]

0.03
[0.03–0.04]

   

104.7
[90.50–119.54

0.40
[0.17–0.62]

0.30
[0.10–0.59]

0.09
[0–0.18]

0.99
[0.71–1]

0.17
[0.01–0.35]

Net nitrification
(µg N·g-1·d-1)

0.72
[0.60–0.86]

0.32
[0.19–0.44]

0.84
[0.70–0.96]

0.68
[0.57–0.83]

1.04
[0.91–1.16]

0.88
[0.74–1.00]

3
[2.85–3.00]

   

7.19
[6.40–7.84]

7.07
[5.82–9.99]

1.21
[1.01–1.38]

0.98
[0.76–1]

0.52
[0.37–0.56]

0.15
[0.05–0.29]

0.25
[0.08–0.42]

0.0001
[0–0.08]

   Notes: Only soil properties for which the exponential or the logistic models were the best fit (Table 4) are shown. For soil properties for which the basic model was the best fit, parameter values are the same mean site values shown in Appendix B and C for the basic models.



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