308
Salinity (PSU)
Sea
o
10
20
30
50
; 40
;
.................................. r----'----'----'---t-"'------'-,
Le Canet
(1976-78)
Salses-Ieucate
(1976-78)
~~-------.. --------------------. ... -
e
III
U'" o e
'C 0
CII 0
::::JCI!
Cl!1II
e -
III
....I
Thau
(1974-90)
Vlc+lngril
(1977-79)
Arnel
(1977-79)
Prevost
(1986)
Grec
(1977-79)
Meiean
(1971-79)
Maugulo
(1989-91)
· · .. · ........ -.. ----.. -Se·rre·
(1989-92)
.. " .. I' ........................ - - -.. ----------~-..
e
III 1/1
U e
.- 0
'" 0
... CI!
0 111
(,)Biguglia
(1975-80)
Diana
(1975-80)
Urbino
( 1975-80)
Palo
( 1975-80)
;
- - 0 - -
i
----0-+-+ ;
--01------+-1
----------~O
:
!
---0-1
~
- - 0 -
i
!
------~o~---------o----------!
----~O~-----+-......... _ ....... _ ....... _ ....... -'---_ _ _ _ _ _ _ _ _ " ' -_ _ ...J
M.-L. De Casabianca
Fig. 13.1. Range and mean of salinity in the main French Mediterranean lagoons
influenced by these factors (Table 13.1). Superimposed on these varying
degrees of natural eutrophication may be additional anthropo-genic
eutrophication originating from the area neighbouring the lagoon.
In the following, the relationship between: (1) eutrophication and
population structure; and (2) macrophytic production and eutrophication will be considered for various lagoonal systems.
13.2 Eutrophication and Macrophyte Community
Structure in Corsican Lagoons
Natural eutrophication is an inherent characteristic of Mediterranean
brackish zones, due to their high degrees of variability and productivity,
as pointed out before. Lagoons are transition zones between land, the