Organization CEN Occitanie

Méjannes-le-Clap

Type of ecosystem Other
Working group WG 2: Scientific
Location Méjannes-le-Clap (30)
Site manager  Département du Gard
Purpose of the experimentation The purpose was to test the behavior of several seed mixes in a plain field.

The goals of restauration were to restore a mediterranean grassland of community interest :
  • Increase vegetation cover ;
  • Increase biodiversity especially density of auxiliary organisms ;
  • Increase frequency and duration of attractive flowers ;
  • Reduce erosion ;
  • Improve soil structure.
List of species sown Aegilops cylindrica
Aegilops ventricosa
Anchusa italica
Anisantha rigida
Anthyllis vulneraria
Asphodelus fistulosus
Astragalus hamosus
Avenula bromoides
Bituminaria bituminosa
Blackstonia perfoliata
Brachypodium distachyon
Brachypodium phoenicoides
Brachypodium retusum
Bromopsis erecta
Bromus lanceolatus
Centaurea paniculata
Centaurium tenuiflorum
Cephalaria leucantha
Cota altissima
Crepis vesicaria ssp. taraxacifolia
Crepis zacintha
Cynoglossum creticum
Dactylis glomerata hispanica
Diplotaxis erucoides
Echium vulgare
Gaudinia fragilis
Glaucium flavum
Hirschfeldia incana
Hypericum perforatum
Knautia integrifolia
Lathyrus annuus
Lathyrus hirsutus
Leucanthemum vulgare
Linum usitatissimum ssp. angustifolium
Lolium rigidum
Loncomelos narbonense
Lotus glaber
Lotus herbaceus
Lotus maritimus
Malva nicaeensis
Malva pseudo-lavatera
Malva sylvestris
Mantisalca salmantica
Medicago arabica
Medicago ciliaris
Medicago doliata
Medicago lupulina
Medicago minima
Medicago orbicularis
Medicago polymorpha
Medicago rigidula
Medicago scutellata
Medicago truncatula
Melilotus albus
Melilotus cf. elegans
Melilotus indicus
Nigella damascena
Onobrychis caput-galli
Papaver rhoeas
Phalaris paradoxa
Phlomis herba-venti
Phlomis lychnitis
Raphanus raphanistrum
Rapistrum rugosum
Salvia verbenaca
Scabiosa atropurpurea
Scorpiurus subvillosus
Scorzonera laciniata
Silene italica
Sinapis alba
Stachys recta
Taraxacum sect. Eryth.
Taraxacum sp.
Tragopogon porrifolius
Trifolium angustifolium
Trifolium campestre
Trifolium incarnatum molinerii
Trifolium squamosum
Trifolium stellatum
Trigonella cf. elegans
Trigonella esculenta
Trigonella sicula
Trigonella smallii
Urospermum dalechampii
Urospermum picroides
Verbascum blattaria
Verbascum boerhavii
Verbascum Méjannes
Vicia lutea
Vicia sativa ssp. nigra
Vicia serratifolia
Vicia villosa
Xeranthemum cylindraceum
Protocol The experimental site consists of 16 25m2 plots where 15 seed mixtures were tested (1 control plot)
Surface tillage, with a scrubbing of the vegetation and passage of a toothed cultivar to 15 cm depth without turning the horizons, just to prepare the seed bed.
The semix was done on the fly, in 2 passes. A first passage with the smallest seeds mixed with a substrate to homogenize (sawdust), a second with the largest seeds. The soil was raked (for hoe mixing) and a roller was passed to compress the soil.

A closure and a bird net has been installed on the site to avoid predation
Free description (facultative) Monitoring
Indicators wanted
- List of species that were successfully installed (with reproductive success : new seeds produced on the site)
- Percentage of target community developed after one/two years
Corresponding protocol or methods
- phytosociological survey on each plot : list of all species developed in the plot, with cover index for each of them ; in addition, cover index for vegetation (all species) / bare soil / litter for each plot. Minimum three surveys /year for each plot.
- protocol for related faune to be defined : probably an exhaustive assessment 3 times/year.
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