ClCléémentine Coiffaitmentine Coiffait
Elise BuissonElise Buisson
Thierry Thierry DutoitDutoit
UMR 6116 IMEP. UniversitUMR 6116 IMEP. Universitéé Paul CPaul Céézannezanne& IUT Avignon. & IUT Avignon. AgroparcAgroparc BP1207 84911 Avignon BP1207 84911 Avignon
cedex9cedex9
clementine.coiffaitclementine.coiffait@@orange.frorange.fr
Steppe Restoration Steppe Restoration
by by
Hay TransferHay Transfer
2
1.In
trod
uctio
nStudy Context
Site
• Plain of La Crau
•Natural reserve of “coussous de Crau ”
•Steppe herbaceous vegetation
3
1.In
trod
uctio
nStudy Context
Site
• Plain of La Crau
•Natural reserve of “coussous de Crau ”
•Steppe herbaceous vegetation
Taeniaterumcaput medusae
Brachypodium retusum
Thymus vulgaris
Vulpia
Linum strictum
Asphodelusayardii
4
1.In
trod
uctio
nStudy Context
Site
• Plain of La Crau
•Natural reserve of “coussous de Crau”
•Steppe herbaceous vegetation
Context•Important habitat for biodiversity
Jeweled lizard Jeweled lizard LacertaLacertalepidalepida
Prionotropisrhodanica
Lesser kestrelLesser kestrel
FalcoFalco naumanninaumanni
Little bustard Little bustard TTetraxetrax tetraxtetrax
5
1.In
trod
uctio
nStudy Context
Site
• Plain of La Crau
•Natural reserve of “coussous de Crau”
•Steppe herbaceous vegetation
Context
•Important habitat for biodiversity
•Ecosystem characterized by low regeneration after p erturbation
•2006, destruction of 23 ha of preserved vegetation to build an
underground pipeline
Method
• Ecological restoration by hay transfer
Pipeline layoutPipeline layout2.Im
pact reduction
Old
pipeline
2006 pipeline
During construction work2.Im
pact reduction
Topsoilstorage
fences
summer
Experimental sites & donor siteExperimental sites & donor site3.Material & Methods
2006 pipeline
C
AB
DS
pipeline steppe
e.g. Site B
Experimental design
- 3 sites (A, B, C)
1
2
3
4
- 4 experimental units / site
3.Material & Methods
- 1 EU : 2 plots on pipeline & 2 plots on steppe
Ungrazed
1.5 m
3 m
Grazed
Hay transfer
Control
ControlHay
transfer
3.Material & Methods
Experimental design
Collecting haysummer 2006at Donor Site
Transferring hayfall 2006
3.Material & Methods
Experimental design
- Vegetation sampling (May 2007)
Pipeline w/out hay
Pipeline w/ hay transfer
3.Material & Methods
Experimental design
4.
Results
Environmental data (soil)
Vegetation height
Silt
Coarse sandOrganic matter
PipelineSteppe
Vegetation species richness
Steppe Pipeline
4
6
8
10
12
14
16
18
20
Spe
cies
richn
ess
w/ hay
b
a
c
w/out hay
d
w/ hayw/out hay
4.
Results
3.
Results
Vegetation, CAAETR
AICU
ANAR
ANIN
ASAY
ASLI
AVBA
BESY
BOIS
BRDI
BRHO
BRMA
BRRU CAMO
CAHI CANI
CAPY
CAUU
CALA
CASP
CART
CARI
CEGL CEPU
CHAL
COCA
CRBU CRSO
CRSA CRAN CYDA
CYEC
DAGL
ECVU
ERCI
ERCA
EUCY EUEX EUSE
EVPY
FIGA
SIPY GATO
GAMU
GAPA
GATR
GAVE
GEMO HECR HERH
HOMU
HYGL
HYRA LECA
LIPE LITR
LIST
LOSP
LOPE
LORI MERI
MEMI
MEMO
METR
NEAP PEPR
PLBE PLLG
PLLA
POBU
POTE POSP
PSIN
REPI
RUSP
SAAP
SAVE
SAMI
SIAT
SCMU
SCLA
SEVU SHAR
SIRO
SIGA
SOAS
SOOL
STCA
TASA
THVJ
TOBA
TOAR TRSP
TRISP
TRCA
TRGL
TRSC
TRST
TRSB TRSU
URDA
URPI
VESI
VEAR VUBR
VUCI
POXX
Axis1: 9.5%
LIAR
Axis2: 7.5%
Pipeline w/out Pipeline w/out hayhay
DiplotaxisLobularia
Sinapis
Steppe Steppe w/ & w/ & w/out w/out hayhay
Pipeline Pipeline
w/ w/ hayhay
Aegilops Aegilops ovataovata
Brachypodium retusum
adult Thymus
CR1
CR2
CR3
CR4
CSR1
R1
R2
R3
R4
R5
R6 RC1
RC2
RC3
RC4
RC5
RC6
RC7
RC8
RC9
RC10
RC11
RS1
RS2
RS3
RS4
RS5
RS6
RS7
RS8
RS9
RS10 RS11 RS12
RS13
RS14
RS15
RS16
RS17
RS18
RS19
RS20
RS21
RS22
RS23
RS24
RS25
RS26
S1 S2
S3
S4
S5
S6
S7
S8
S9 S10
S11
S12
S13
S14
S15 S16 S17
S18
S19
S20 S21
S22 SC1
SC2
SC3
SC4
SC5
SR1
SR2
SR3
SR4
SR5
SR6
SR7 SR8
SR9
SR10
SR11 SR12
SR13
SR14
SR15
SR16
SR17
SR18 SR19
SR20
SR21
SR22
SR23
SR24
SR25 SR26
SR27
SR28
SR29
SR30
SR31
SR32
SR33
Axis2: 7.6
Axis 1: 9.5%
CS1
3.
Results
Pipeline w/out Pipeline w/out hayhay
Grime vegetation types, CA
RS, RCRS, RC
Pipeline Pipeline w/ w/ hayhay
Steppe Steppe w/ & w/out w/ & w/out hayhay
S, SC, CSS, SC, CS
RC, SRRC, SR
HAYHAY
17
4. Conclusions
Restoration success
���� Specific richness increases on pipeline
���� Reintroduction of structuring species and S
���� A lot of Poaceae on restored pipeline
Views :
���� Apply to greater surface
Thank you for your attention !