2
270
Figure 1. Clustering of the 8 agro-ecological units
for the 26 more abundant species.
Thblel. Model for phytosociological releves analysis
of grasslands in calcareous Burgundy.
BuomuS QAectuS
Lollum peaenne April
Juncus glaucus
all period
Ranunculus ac/us April
all period
Lotus coanlculatus
Cynosunus cats tatus June
Casidamlnc paatcnsls
April
Thl^oLLum ficpcns July
April
Plantago media
1
Ranunculus A&pens
April
May
Talfiollum aepens
GRAZED
GRASSLANDS ON TOP,MIDDLE OR
BOTTOM
Holcus lanatus
June
OF SLOPE
June
GRAZED GRASSLANDS ON
BOTTOM OF VALLEYS,
OR SLOPE BOGS, ON
DEEP,MORE OR LESS
MUDDY SOILS.
Ranunculus
acAls
April
Anthoxan-
thum
odofiatum
May
MUDDY
SOILS
Caltka
palustnis
April
Pcstuca
oaundlnacca
May
Poa
talvlalls
May
T
VERY
MUDDY SOILS
© ©
GRAZED GRASS
LANDS ON SLOPE
MORE OR LESS
SHALLOW SOIL,
DRY.
©
GRAZED GRASS
LANDS ON
MIDDLE OR
BOTTOM OF
SLOPE,DEEP,
MOIST SOIL
GRAZED GRASS
LANDS ON
MIDDLE OR
BOTTOM OF
SLOPE, DEEP,
HUMID SOIL
GRAZED GRASS
LANDS ON
BOTTOM OF
SLOPE, DEEP,
VERY HUMID
SOIL.
