Monteverde : Ecology and Conservation of a Tropical Cloud Forest

Figure 9.12. Biomass of litterfall

(g/m^2 /wk) of terrestrially rooted

material collected from study plots

between 1987 and 1990. Error bars

represent one standard error of the

mean. (From Nadkarni and

Matelson 1992b)

Table 9.16. Estimated ion deposition to the canopy (D), ion fluxes in throughfall (TF), and percentage net

retention (% NR) of ions by the canopy.

Ion Deposition or Flux (kg/ha/yr)

Location H+ NCV-N Ca2+ Mg2+ Na+

San Eusebio, Venezuela^3

D

TF

% NR

Santa Rosa de Cabal, Colombia^15

D

TF

% NR

Santa Rosa de Cabal, Colombia^13

D

TF

% NR

Monteverde, Costa Ricac

D

TF

% NR

n.d.

n.d.

—

n.d.

n.d.

—

n.d.

n.d.

—

0.49

0.04

92

n.d.

n.d.

—

n.d.

n.d.

—

n.d.

n.d.

—

3.4

0.6

82

n.d.

n.d.

—

22.8

21.5

6

11.2

11.6

-3

3.4

1.4

61

1.96

1.38

30

0.80

1.67

-109

0.48

0.40

17

0.06

0.50

-614

3.5

69.7

-1891

8.8

95.2

-982

6.9

33.0

-378

5.2

66.8

-1185

7.5

6.9

8

11.3

27.1

-140

7.3

18.8

-158

8.7

26.1

-200

6.9

3.3

52

3.6

10.7

-197

2.5

7.0

-180

5.6

8.6

-54

4.4

4.4

0

26.9

26.9

0

15.9

14.4

9

43.8

43.8

0

n.d.a = not determined.

bSteinhardt and Fassbender 1979.

GVeneklaas^1990 (sites at^2550 m and^3370 m elevation).

This chapter.

Table 9.17. Mean nutrient concentration (mg/g)
(± SEM) of components of litterfall from the
leeward cloud forest study area, Monteverde
(Nadkarni and Matelson 1992a).

Table 9.18. Mean nutrient concentrations (mg/g

± SEM) of live foliage collected from trees between

24 April 1988 and 14 January 1989, pooled for all

species and sampling intervals.

Nutrient

Component N Ca Mg K

Leaves

Stems

Reproductive

Miscellaneous

14.7

(0.5)

10.9

(0.5)

12.5

(0.5)

19.3

(0.5)

0.8

(0.02)

0.6

(0.04)

1.1

(0.1)

1.2

(0.04)

19.1

(0.5)

16.8

(0.6)

12.3

(0.6)

14.4

(0.3)

2.7

(0.1)

1.7

(0,1)

1.8

(0.1)

1.7

(0.1)

1.2

(0.2)

2.2

(0.4)

3.8

(0.3)

2.8

(0.2)

Season

Nutrient

N

P

Ca

Mg

K

Misty

18.4 (1.2)

1.4 (0.2)

11.9 (2.3)

2.4 (0.3)

2.3 (0.5)

Dry

26.7 (3.4)

2.3 (0.5)

5.7 (1.3)

2.0 (0.1)

11.7 (1.1)

Wet

21.9 (2.7)

1.3 (0.7)

7.8 (0.6)

1.9 (0.1)

8.5 (0.8

P

.007

.002

.024

.265

.001

Values represent means from 14 trees in six plant families. N= 44

sampling intervals overall, with three to six replicates per tree; p

values indicate the results of a one-way ANOVA testing the effects

of season on nutrient concentration. See Section 9.1.3 for mean an-

nual values.

Nh+4-N Po3-4P K+

p