Grands Causses
IUCN VRegional Nature Park · 1995
3 807 km²
Subdivision · FRA
Lunas
France
CfbTemperate, no dry season, warm summer(42 %)
Species observed
5 759
Observations
198 807
Area
285,4km²
Ecological tissue
Sample of 36 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique
Indicateurs du tissu écologique
Tissu écologique de Lunas : 28 espèces reliées par 85 interactions GloBI sur 5 types (connectance 12.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
38
Interactions affichées
85
Connectance
0.121
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
5 759 distinct species · 198 807 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,8°C
Annual rain
1 151mm
Warmest m°
25,5°C
Coldest m°
0,7°C
Elevation: 506 m on average (min 162 m, max 807 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,8°C
Annual rain
1 151mm
Warmest month
25,5°C
Coldest month
0,7°C
Mean alt.
506m
Min
162m
Max
807m
Std. dev.
141m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(42 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,8
Org. C
41,2g/kg
Clay
30,3%
Sand
30,5%
Silt
39,2%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Hérault
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,7
Org. C
67,7g/kg
Clay
29,1%
Sand
30,9%
Silt
40,0%
5–15 cm
pH H₂O
6,8
Org. C
33,1g/kg
Clay
29,6%
Sand
30,6%
Silt
39,8%
15–30 cm
pH H₂O
6,8
Org. C
22,9g/kg
Clay
32,1%
Sand
30,0%
Silt
37,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest52.8%
Crops15.3%
Built-up0.2%
Bare soil1.1%
Other (grassland, water…)30.6%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 2 lakes · 20 rivers
Hydrology metrics for this exact territory
Stream length here
86,5km
Lake surface here
0,79km²
Basins crossed
3
Max stream order
4
Max drainage
2 621km²
Discharge in basins
1,2m³/s
Mean precip.
724mm/an
Mean T°
12,8°C
Moisture idx
-0,26
Max snow
5%
Mean runoff
596mm/an
Mean elev. (basins)
350m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (20, ord ≥ 4)
- L'Orbord 4len here23.68 km23%total102 km
- Le Gravezonord 3len here10.35 km100%total10 km
- Ruisseau de l'Avenetteord 2len here9.33 km80%total12 km
- Ruisseau de Planèsord 1len here6.12 km82%total7 km
- La Tèsord 3len here4.33 km100%total4 km
- Ruisseau du Sourlanord 2len here4.30 km100%total4 km
- Le Rec d'Arnoilheord 1len here3.96 km100%total4 km
- La Maretteord 1len here3.82 km100%total4 km
- Ruisseau de Nizeord 2len here3.46 km100%total3 km
- Tirounanord 1len here3.11 km100%total3 km
- Ruisseau de Lamalouord 1len here2.56 km100%total3 km
- Ruisseau de Merdauxord 3len here2.35 km100%total2 km
8 more river segmentssorted by Strahler order + length
- Canal de Clairacord 2len here1.84 km14%total14 km
- Le Salagouord 2len here1.48 km13%total11 km
- L'Aubayguesord 3len here1.47 km15%total10 km
- Ruisseau de Valayracord 1len here1.43 km100%total1 km
- Ruisseau de la Baraqueord 1len here1.32 km100%total1 km
- Ruisseau de Valadiéord 1len here0.86 km100%total1 km
- Ruisseau de Saint-Georgesord 1len here0.69 km101%total1 km
- La Vèrèneord 1len here0.04 km1%total4 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
20,6%
Pesticides
10,6kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas7
IUCN Not Reported · 5IUCN V · 2
Haut-Languedoc
IUCN VRegional Nature Park · 1973
3 070 km²
Causse du Larzac
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2011
295 km²
Causse du Larzac
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2008
295 km²
Le Salagou
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2020
128 km²
Crêtes du Mont Marcou et des Monts de Mare
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2016
15 km²
Complete list7 protected areas
- Grands CaussesRegional Nature ParkIUCN V19953 807 km²
- Haut-LanguedocRegional Nature ParkIUCN V19733 070 km²
- Causse du LarzacSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported2011295 km²
- Causse du LarzacSpecial Protection Area (Birds Directive)IUCN Not Reported2008295 km²
- Le SalagouSpecial Protection Area (Birds Directive)IUCN Not Reported2020128 km²
- Crêtes du Mont Marcou et des Monts de MareSpecial Areas of Conservation (Habitats Directive)IUCN Not Reported201615 km²
- Dalle permienne à empreintes de reptiles de la LieudeGeotope Protection OrderIUCN Not Reported20190 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations10
France-specific data (Phase 2)
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.