Table 15.4. Volume-weighted means (ion concentrations and alkalinity in J.teq L- 1
,
conductivity in J.tS cm- 1
at 25 oC)
for bulk precipitation, throughfall (T)
and stemflow (S) at Prades and Montseny. The four data sets are defined in Table 15.1. For Prades-I, throughfall and stemflow concentrations under three different species
(Quercus ilex, Arbutus unedo and
Phillyrea latifolia) are given
Data set
Conductivity
Na+
K+
Ca2+
Mg2+
NH4+
solcr
Alkalinity
Prades-l
Bulk precipitation
22.1
28.7
8.2
56.4
1l.5
27.7
17.9
72.2
35.5
32.6
T - Q.
ilex
42.6
77.0
76.7
117
37.0
54.9
17.4
135
63.7
35.9
A.
unedo
48.7
43.5
114
161
47.7
44.4
19.4
132
67.1
65.1
P.
latifolia
37.8
37.4
61.4
114
25.5
45.5
17.6
128
55.0
44.7
S - Q.
ilex
43.5
49.6
115
107
39.5
12.4
165
66.8
22.0
A.
unedo
39.8
44.4
95.4
141
33.7
12.1
126
59.8
34.4
P.
latifolia
36.5
44.8
99.5
136
27.1
6.8
137
59.0
29.2
Prades-2
Bulk precipitation
11.7
15.8
6.9
33.4
5.8
14.9
16.0
34.4
21.4
15.6
T
-Q. ilex
32.9
29.7
68.0
129
32.7
27.2
40.7
105
44.9
72.5
Montseny-l
Bulk precipitation
23.2
23.4
3.6
61.1
12.5
18.8
27.7
T - Q.
ilex
45.4
38.5
86.1
129
45.2
33.7
61.7
Montseny-2
Bulk precipitation
13.8
18.5
2.9
34.8
7.0
29.5
25.5
36.5
22.8
18.5
T - Q.
ilex
25.4
26.0
42.3
66.4
22.9
27.1
22.4
54.8
45.0
76.1
S - Q.
ilex
20.2
18.1
41.3
47.5
16.2
17.5
10.7
41.2
36.1
77.6
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