Ecological Archives M085-008-A7

David M. Forsyth, Deborah J. Wilson, Tomás A. Easdale, Georges Kunstler, Charles D. Canham, Wendy A. Ruscoe, Elaine F. Wright, Lora Murphy, Andrew M. Gormley, Aurora Gaxiola, David A. Coomes. 2015. Century-scale effects of invasive deer and rodents on the dynamics of forests growing on soils of contrasting fertility. Ecological Monographs 85:156–179. http://dx.doi.org/10.1890/14-0389.1

Appendix G. Chemical characteristics of the alluvial and marine terrace soils used to pot seedlings collected from the study area for growing in glasshouse conditions before planting into deer exclosures.

Table G1 summarizes some chemical properties of soils collected from the alluvial and marine terraces at Waitutu Forest and transported to Lincoln to grow seedlings in. Four replicate samples of the soil from each terrace used in the potting were analyzed by the Environmental Chemistry Laboratory (Palmerston North, New Zealand) for the following nine variables, using the methods outlined in Blakemore et al. (1987): pH, % total C, % total N, C:N, Bray II P, and exchangeable Ca, Mg, K, and Na.

Table G1. Chemistry of alluvial and marine terrace soils used to pot seedlings collected from the study area in July–August 2002. Values are means ± SE.

Chemical Terrace
Alluvial Marine

pH (water)

4.95

±0.17

4.01

±0.15

Total C (%)

4.51

±1.16

26.21

±12.62

Total N (%)

0.21

±0.04

0.78

±0.43

C:N

21.53

±1.54

34.35

±2.79

P (mg/kg)

44.03

±24.27

31.31

±16.90

Ca (cmol(+)/kg)

2.99

±0.52

5.86

±5.39

Mg (cmol(+)/kg)

1.63

±0.40

4.51

±3.01

K (cmol(+)/kg)

0.21

±0.01

0.64

±0.40

Na (cmol(+)/kg)

0.22

±0.04

1.01

±0.59

 

Literature cited

Blakemore, L. C., P. L. Searle, and B. K. Daly. 1987. Methods for chemical analysis of soils. New Zealand Soil Bureau Scientific Report 80. Department of Scientific and Industrial Research, Wellington, New Zealand.


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