304
Anna Avila
Stream. Continuous harvesting
550
'..J
500
0Q)
.:;
450
~
c:
1\1
400
.::.:
----~------------------------ a
~--==:============= ~
~
350
a
1800 1850 1900 1950 2000 2050 2100 2150
Stream. Periodical harvesting
550
~
500
0Q)
.:;
450
a
. ~
b
c:
iii 400
c
.::.:
~
350
b
1800 1850 1900 1950 2000 2050 2100 2150
Stream. Harvesting discontinued
550
a
' ..J
500
0b
Q)
2:
c
450
~
c:
iii 400
.::.:
~
350
C
1800 1850 1900 1950 2000 2050 2100 2150
Fig. 21.3. Stream alkalinity over time for the Montseny catchment, under different forestry
practices (a-c) and the same three atmospheric deposition scenarios (a-c) defined in Fig, 21.2