Table 15.1. Site and sampling characteristics for the throughfall and stemflow studies conducted in holm oak forests of Prades and Montseny
Data
seta
Site
Aspect Topographic Sampling Sampling
tree density Number Plot Number of
Number of
position
period
schedule (stems ha-I)b
of plots
size throughfall collectors
stemflow
(m 2
)
collectors
For
For
volume
chemistry
Prades-l
Avic
N
Mid slope
Aug 1981- Event
8460
950 50
8
20 c
Nov 1983
Prades-2
Torners
SE
Mid slope
Nov 1991- Weekly
18200
6
64 24
24d
-
e
Nov 1992
Montseny-l Permanent plotf
NNW
Lower slope Dec 1978Biweekly
2008
2300
4-88
8
-
e
Dec 1980
Montseny-2 Torrent de la Mina
N
Lower slope Jun 1995- Weekly
2645
4
154 32
32 d
10
Jun 1996
a
Sources: Prades-l: Bellot (1989); Prades-2: A. Avila (unpubl. data); Montseny-l: Roda (1983), Roda et al. (1990); Montseny-2: A. Avila and A. Rodrigo
(unpubl. data).
b D50
~ 2 cm at Prades; dbh
~ 5 cm at Montseny.
c
Ten holm oaks, 5
Arbutus unedo, and 5
Phillyrea latifolia.
d The same collectors were used for throughfall volume and chemistry.
e
Stemflow was not measured in these studies.
f Permanent plot at La Castanya, in the Torrent de la Mina catchment (Chap. 2).
8
Four collectors until January 1980,8 collectors thereafter.
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