450
A
seasonal fast growingl
epiphytes
:
Relative dominance
nutrient opportunists :
of primary producers
: free floating
1 macroalgae
l '"' 1'\ I
1 ~ ~~I 'w; ""
1 /,--.. , I ~ 1'J ~
. .r~ "'';.. \:
'\
# ....
'.J
'li phytoplankton
.,
~
.. • • • , '. '. ' . ..........
8 light
I Relative levels of chemical I nutrient
penetration
and physical parameters
level
~
.i ...... ~--------. ......... :
......... :
~~
~
~
:
substrate
1 "
;,...........
1
~
: '" .......
--~--------+'-----'~
:
~-......: ......... --_ .... -_... .
----------_~
.. ..... ..t: .... ~..
:0<-:
: .. ' ........ ,.- ..... :
resuspension
.,..tII'!
,,*, ... ,~........ 1-',
.
------_... : ........ .,.~
......... -:-. ....... .:::-............:
________________ 01
l ----~.
C
number of
1
macrophyte
:
Changes in distribution,
distribution depth grazers
carbon and
structure and function on
of macrophytes
\ •
nutrient flow
component and system level
~
~
in the system
:
---------.''"1 , .. -- _~J--.. -.. #'-.,-i .. --·-t-, . . . ··-·-··-·--·
. ,,,'
:
. i't . . . v '-.... ,
.......... ~ .,.,..,"'-*'~ ........ "
: #';...
,
- , ,'-"-'"
. j
....... ~' ,", '- -
~
.--_........ :,-'
"
;
------...... 1
\"
organic deposition and
_----.....:
"..
heterotrophic activity
:
...
.
:
:
II
III
IV
Phases of increaSing eutrophication---il.~
w. Schramm
Fig. I.' Schematic presentation of the relative changes in the dominance of primary producers and some related structural and functional parameters during successive phases
in the progress of eutrophication