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 !